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    [platne_od] => 29.06.2023 15:51:00
    [zmeneno_cas] => 29.06.2023 16:00:51.424078
    [zmeneno_uzivatel_jmeno] => Jaroslav Aubrecht
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General Practitioner, 
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Technická 5
166 28 Prague 6 – Dejvice
IČO: 60461373 / VAT: CZ60461373

Czech Post certified digital mail code: sp4j9ch

Copyright: UCT Prague
Information provided by the Department of International Relations and the Department of R&D. Technical support by the Computing Centre. [paticka_odkaz_mail] => mailto:greencats@vscht.cz [logo] => home [drobecky] => [more_info] => [den_kratky_4] => [archiv_novinek] => [novinky_servis_archiv_rok] => [novinky_kategorie_1] => [novinky_kategorie_2] => [novinky_kategorie_3] => [novinky_kategorie_4] => [novinky_kategorie_5] => [novinky_archiv_url] => [novinky_servis_nadpis] => [novinky_dalsi] => See more [novinka_publikovano] => Publikovano: [novinka_datum_konani] => Datum konani: [den_kratky_3] => [den_kratky_2] => [den_kratky_5] => [den_kratky_6] => [den_kratky_0] => [zobraz_mobilni_verzi] => [den_kratky_1] => [nepodporovany_prohlizec] => [social_in_title] => [social_li_odkaz] => [novinky_archiv] => [novinky_servis_kategorie_vse] => vše [novinky_servis_archiv_submit] => Filtrovat [hledani_nadpis] => hledání [hledani_nenalezeno] => Nenalezeno... [hledani_vyhledat_google] => vyhledat pomocí Google ) [poduzel] => stdClass Object ( [53432] => stdClass Object ( [obsah] => [poduzel] => stdClass Object ( [53433] => stdClass Object ( [obsah] => [iduzel] => 53433 [canonical_url] => _clone_ [skupina_www] => Array ( ) [url] => [sablona] => stdClass Object ( [class] => [html] => [css] => [js] => [autonomni] => ) ) [53434] => stdClass Object ( [obsah] => [iduzel] => 53434 [canonical_url] => _clone_ [skupina_www] => Array ( ) [url] => [sablona] => stdClass Object ( [class] => [html] => [css] => [js] => [autonomni] => ) ) [53436] => stdClass Object ( [obsah] => [iduzel] => 53436 [canonical_url] => _clone_ [skupina_www] => Array ( ) [url] => [sablona] => stdClass Object ( [class] => [html] => [css] => [js] => [autonomni] => ) ) ) [iduzel] => 53432 [canonical_url] => _clone_ [skupina_www] => Array ( ) [url] => [sablona] => stdClass Object ( [class] => [html] => [css] => [js] => [autonomni] => ) ) [53439] => stdClass Object ( [obsah] => [poduzel] => stdClass Object ( [53619] => stdClass Object ( [nazev] => Recent news [seo_title] => Recent news [seo_desc] => Recent news [autor] => [autor_email] => [obsah] => [urlnadstranka] => [ogobrazek] => [pozadi] => [iduzel] => 53619 [canonical_url] => [skupina_www] => Array ( ) [url] => /home [sablona] => stdClass Object ( [class] => stranka_novinky [html] => [css] => [js] => [autonomni] => 1 ) ) [53440] => stdClass Object ( [nazev] => About us [seo_title] => About us [seo_desc] => About us [autor] => [autor_email] => [obsah] =>

We are a research group at the Department of Sustainable Fuels and Green Chemistry at the University of Chemistry and Technology Prague and UCT Technopark in Kralupy nad Vltavou. Our research topics are motivated by Green chemistry principles and environmental sustainability. Catalyst design, synthesis and characterization coupled with testing in chemical reactions are our main directions 

Main research interests: 

Development of environmentally friendly catalysts for:

  • Ester hydrogenolysis
  • Deoxygenation of phenolics, triglycerides and aldol condensation products

Valorization of biomass-derived compounds

  • Hydrogenation / deoxygenation of phenolic compounds
  • Aldol condensation of furfural with ketones
  • Selective hydrogenation / deoxygenation of aldol condensation products
  • Hydrotreatment of bio-oils and waste triglyceride

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sas

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Our laboratories and technical hall are equipped with several reactors for catalyst testing as well as equipment for catalyst preparation and characterization.

Reactors  

Micro Catalyst Bed unit – This PC-controlled unit is used for hydrogenation under high pressure of various compounds. Two liquids with a gas such as H2 or N2 can be simultaneously fed into the fixed-bed reactor of 11 ml (16 cm x 0.85 cm). The unit can be pressured up to 280 bar while with maximum temperature is 450 °C. 

Bench Top Autoclave Reactor – This high-pressure stirred laboratory apparatus is used for diverse catalyst research, catalyst characterization, and surface chemistry studies under a neutral, reductive or oxidizing atmosphere. The autoclave can be pressured up to 200 bar, the maximum operating temperature is 500 °C.

Down-flow fixed-bed tube reactor - This reactor is used for the treatment of solid materials under high-temperature conditions and the study of their catalytic performance. The flow catalytic unit is equipped with: a tubular furnace (a heating zone with a length of 300 mm and a maximum temperature of 1000 °C), gas flow meters and an HPLC pump.

Flow reactor: The testing unit could be used for 0.1-10 g of catalysts. Two types of reactor could be used – a stainless-steel high-pressure reactor (pressure up to 5.0 MPa) and a glass reactor for testes at ambient pressure. Operating up to 800 °C depending on the temperature. Electronic mass flow controllers are used (0-500 ml/min) with a maximum pressure of 10 MPa. The HPLC pump (0.6-600 ml/h) is used to inject liquids into a pressurized reactor operating in continuous flow mode, while the syringe pump (0.73 µL/h to 2100 mL/h) is used for the glass reactor. 

Analytical methods

ICP-OES is used for the determination of metal leaching from catalysts in an organic matrix.

GC machine Agilent 7820A is used for the analysis of reaction products. The GC unit is equipped with an auto-injection system, a capillary column and FID, and is controlled by the OpenLAB CDS Workstation.

TPR/TPD/TPO instrument AMI-300 with a TCD and FTIR cell. The unique setup is able to determine catalyst properties such as reducibility or probe acid-base character. Moreover, the catalyst surface could be treated by various organics and their interaction analysed. 

At UCT we have long-lasting and successful cooperation with:
Laboratory for XRF and XRD analysis (S. Randáková)
Laboratory for H2-TPR and nitrogen physisorption (M. Lhotka)
Laboratory for TGA-MS (V. Fíla)
Laboratory for AAS analysis (D. Pokorná)
Laboratory for Raman spectroscopy (L. Lapčák)
Laboratory for ICP analysis at UCT Technopark Kralupy

Methods

The catalyst preparation is our main focus and we are able to prepare co-precipitated as well as supported catalysts synthesized via a wide range of techniques. The following calcination and reduction in ovens could be done under different atmospheres.

The co-precipitation apparatus is intended for catalyst preparation under controlled temperature and pH values. The apparatus is equipped with: a magnetic stirrer with a hotplate (maximum temperature is 380 °C, maximum stirring speed is 1.500 rpm), benchtop pH-meter (resolution ± 0.01 pH, the maximum temperature is 100 °C) with a glass electrode, 2 peristaltic pumps for co-feeding reactants (maximum output is 100 ml/min).

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 “Life is trying things to see if they work.” Ray Bradbury.


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#PhD STUDENT submission is open by 15th April 2024

GreenCats would like to welcome new PhD students into our group. Currently, we have four interesting topics for PhD students - read in detail. If you are interested now, contact us to tailor the topic exactly for you. The deadline to apply for the positions is on 15th April 2024. Read all the information and the process of application.

Requirements

  • MSc in Chemistry
  • Elemental knowledge of catalysis
  • Experience with laboratory practice
  • Elemental experience with analytic methods

What do we offer you?

  • Work in an international group
  • Dealing with current hot topics
  • Opportunities to present your results
  • Personal development

#PhD STUDENT submission is open by 15th April 2023

GreenCats would like to welcome new PhD students into our group. Currently, we have two open positions for a PhD student. Both theses (read in detail) focus on catalyst development in the field of the valorization of biomass-derived compounds. If you are interested now, contact us to tailor the topic exactly for you. The deadline to apply for the positions is on 15th April 2023. Read all information and contact us with your motivation letter and CV.

Expectations

  • Elemental knowledge of catalysis
  • Experience with laboratory practice
  • Elemental experience with analytic methods such as GC or LC

What do we offer you?

  • Work in an international group
  • Dealing with current hot topics
  • Opportunities to present your results
  • Personal development

#JUNIOR RESEARCHER (PostDoc position) submission in April 2023

Are you a young PhD? (up to 4 years after PhD defence)
Do you have any idea that fits with our main topics and interest?
Do you want to work in Prague?

Then contact us with your idea and we will help you to prepare a project proposal. The Czech Science Foundation will open soon a call for the submission of three-year projects. There are some valuable links.

  1. Types of grant projects - The Czech Science Foundation (GACR) – see POSTDOC INDIVIDUAL FELLOWSHIP –  INCOMING
  2. Extracts from Tender Documents - The Czech Science Foundation (GACR) – see POSTDOC INDIVIDUAL FELLOWSHIP –  INCOMING

#PhD STUDENT submission on 15th April 2022

We are happy to announce new Ph.D. topics related to our ongoing research projects focusing on biomass valorization to value-added products with the help of heterogeneous catalysis and green chemistry principles. If you would like to know more about the topics or study at the University of Chemistry and Technology Prague, please contact us. The deadline to apply for the positions is on 15th April 2022.


#JUNIOR RESEARCHER (PostDoc position) submission in April 2022

Are you a young PhD?
Do you have any idea that fits with our main topics and interest?
Do you want to work in Prague?

Then contact us with your idea and we will help you to prepare a project proposal. The Czech Science Foundation will open soon a call for the submission of three-year projects. There are some valuable links.

  1. Types of grant projects - The Czech Science Foundation (GACR) – see POSTDOC INDIVIDUAL FELLOWSHIP –  INCOMING
  2. Extracts from Tender Documents - The Czech Science Foundation (GACR) – see POSTDOC INDIVIDUAL FELLOWSHIP –  INCOMING

#BACHELOR & MASTER

We offer you an opportunity to do a Bachelor or Diploma thesis in the field of catalysis.


#JUNIOR RESEARCHER: EXPIRED on 14th April 2020

Environmental Chemistry And Technology: Catalysis For Advanced Biofuels

Multifunctional Catalysts for Efficient Biomass Valorization

Significant attention and research efforts of the scientific community have been dedicated to the efficient valorization of biomass-derived oxygenates to advanced biofuels and petrochemicals. Efficient conversion of simple biomass-derived building blocks, such as different furanics, aldehydes/ketones, acids/esters and phenolics, requires a cascade of multiple conversion steps including, for instance, C-C coupling, dehydration and hydrogenation reactions relying on multifunctional catalysts instead of a cascade of single-function catalysts. Thus, the main motivation of the project is to design efficient multifunctional catalysts for multicomponent mixtures of biomass-derived oxygenates.

Main objectives and role of postdoc:

  • Rational design of multifunctional catalysts
  • Synthesis of multifunctional catalysts
  • Characterization of multifunctional catalysts
  • Evaluation of multifunctional catalysts in the model reaction system including C-C coupling and (partial) hydrodeoxygenation
  • Interpreting the structure-activity relationships as a way to improve the catalyst design

Planned activities:

  • Design and synthesis of multifunctional heterogeneous catalysts
  • Detailed characterization of synthesized catalysts
  • Activity, selectivity and stability testing of the synthesized catalysts
  • Analysis of the catalyst synthesis-structure-properties and structure-properties-activity-selectivity relationships
  • Research project proposal preparation

Specific requirements:

  • Practical experience in heterogeneous catalysis
  • Hands-on experience with synthesis/preparation of heterogeneous catalysts
  • Knowledge of catalyst characterization methods
  • Hands-on experience with assessment of the performance of heterogeneous catalysts

Mentors: David Kubička, PhD, MBA and Assoc. Prof. Pavel Šimáček

David.Kubicka@vscht.cz  Pavel.Simacek@vscht.cz

Who can apply?

We are looking for postdoc/junior researchers from around the world who:

  • are max. 7 years after receiving PhD diploma in relevant field
  • were employed outside the Czech Republic for at least 2 years in the last 3 years
  • published at least 2 publications in the last 3 years
  • are interested in one of the 8 key research areas in chemistry (see below)
  • can start the 20-month fellowship on 1 September or 1 October 2020

What do we offer?

  • 20-month fellowship at UCT Prague, supported by EU funds
  • full-time contract
  • monthly salary of 2800 EUR + consumables
  • support of excellent mentor & integration in the research team
  • employee benefits (6 weeks of vacation, catering allowance, language courses, institutional childcare)
  • possibility to apply for own research projects and establish an independent research group
  • international creative environment
  • enjoyable city life in a tolerant and secure country with rich cultural and natural heritage
  • excellent transport connection with the whole world

Selection criteria

  • research excellence (publications, citations, projects, etc.)
  • clear vision and research objectives
  • know-how, international experience, skills, laboratory techniques
  • motivation, creativity, activity, flexibility, independence, responsibility
  • excellent knowledge of written and spoken English (level B2 or higher)
  • organisational, communication and presentation skills
  • ability and willingness to publish results in reviewed highly impacted journals
  • ability and willingness to prepare and submit a research project during the mobility

How to apply?

  • select one key research area in chemistry (see the list)
  • download and fill in APPLICATION FORM
  • submit your application via e-mail to anna.konecka@vscht.cz with “ChemJets2 application” in subject by Tuesday 14 April 2020 23:59 Brussels time
  • be ready for an individual skype interview with mentor between Mon-Thu 27-30 April 2020
  • final results of the selection process will be announced to all applicants in mid-May 2020

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We are open to your questions. Come to visit us at the address:

University of Chemistry and Technology Prague
Technická 5
166 28, Prague 6 – Dejvice

We are also based in research center at Technopark Kralupy, close from Prague

Technopark Kralupy Vysoké školy chemicko-technologické v Praze
Náměstí G. Karse 7/2
278 01 Kralupy nad Vltavou
Czech Republic

Website

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greencats@vscht.cz

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There is a possibility to write the thesis in English.

Aktuální pro akademický rok 2021/2022

Vývoj ekologicky šetrných nosičových měďnatých katalyzátorů pro hydrogenolýzu esterů

Vedoucí práce: Ing. David Kubička, Ph.D. MBA
Konzultant: Ing. Jaroslav Aubrecht / Ing. Violetta Pospelova

Stručná anotace:

Bakalářská práce je zaměřena na využití principů zelené chemie při vývoji ekologicky šetrných hydrogenolýzních katalyzátorů. Cílem práce je nahradit tradiční CuCr katalyzátory, při jejichž výrobě vznikají nebezpečné Cr odpady, ekologicky šetrnějšími Cu nosičovými katalyzátory. Díky vývoji nových katalyzátorů bude možné uskutečnit hydrogenolýzu esterů vedoucí k příslušným alkoholům s širokým spektrem použití za mírnějších reakčních podmínek, než je tomu v případě CuCr katalyzátorů (>250°C a >25 MPa H2). Bakalářská práce je založena na běžícím výzkumném projektu a zahrnuje přípravu a charakterizaci nosičových Cu katalyzátorů nebo jejich následné testování v hydrogenolýze esterů.

Katalytická deoxygenace modelových kyslíkatých sloučenin a jejich směsí

Vedoucí práce: Ing. David Kubička, Ph.D. MBA
Konzultant: Ing. Bogdan Shumeiko

Stručná anotace:

Bakalářská práce je zaměřena na efektivní zhodnocení obnovitelných surovin díky zvýšení účinnosti deoxygenačních katalyzátorů a přispívá k naplnění „Zelené dohody pro Evropu“. Cílem práce je popsat, jak se během deoxygenace ovlivňují různé typy kyslíkatých látek, konkrétně fenoly a estery. Díky nalezení a pochopení vztahu mezi složením reakční směsi a konverzí kyslíkatých látek na žádané uhlovodíky bude možné optimalizovat složení a aktivitu deoxygenačních katalyzátorů. To přispěje k efektivnějšímu zpracování komplexních směsí kyslíkatých látek na pokročilá biopaliva. Bakalářská práce je založena na běžícím výzkumném projektu a zahrnuje přípravu a charakterizaci nosičových NiMo katalyzátorů nebo jejich následné testování v deoxygenaci modelových směsí kyslíkatých látek.

Multifunkční katalyzátory pro zhodnocení kyslíkatých látek získaných transformací biomasy - ZADÁNO

Vedoucí práce: Ing. David Kubička, Ph.D. MBA

Stručná anotace:

Bakalářská práce je zaměřena na efektivní zhodnocení obnovitelných surovin integraci kondenzačních a deoxygenačních reakcí a přispívá k naplnění „Zelené dohody pro Evropu“. Cílem práce je navrhnout a ověřit katalytický systém, který umožní současnou kondenzaci nízkomolekulárních aldehydů a ketonů a deoxygenaci kondenzačních produktů. Tento inovativní přístup umožní jednostupňovou syntézu komponent pokročilých biopaliv, popřípadě petrochemických surovin. To přispěje k efektivnějšímu zpracování komplexních směsí kyslíkatých látek na pokročilá biopaliva. Bakalářská práce je založena na běžícím výzkumném projektu a zahrnuje přípravu a charakterizaci multifunkčních katalyzátorů nebo jejich následné testování ve společné kondenzaci a deoxygenaci směsí kyslíkatých látek.

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There is a possibility to write the thesis in English.

Aktuální pro akademický rok 2021/2022

Vývoj ekologicky šetrných nosičových měďnatých katalyzátorů pro hydrogenolýzu esterů

Vedoucí práce: Ing. David Kubička, Ph.D. MBA
Konzultant: Ing. Jaroslav Aubrecht / Ing. Violetta Pospelova

Stručná anotace:

Diplomová práce je zaměřena na využití principů zelené chemie při vývoji ekologicky šetrných hydrogenolýzních katalyzátorů. Cílem práce je nahradit tradiční CuCr katalyzátory, při jejichž výrobě vznikají nebezpečné Cr odpady, ekologicky šetrnějšími Cu nosičovými katalyzátory. Díky vývoji nových katalyzátorů bude možné uskutečnit hydrogenolýzu esterů vedoucí k příslušným alkoholům s širokým spektrem použití za mírnějších reakčních podmínek, než je tomu v případě CuCr katalyzátorů (>250°C a >25 MPa H2). Diplomová práce je založena na běžícím výzkumném projektu a zahrnuje přípravu a charakterizaci nosičových Cu katalyzátorů a jejich následné testování v hydrogenolýze esterů.

 Katalytická deoxygenace modelových kyslíkatých sloučenin a jejich směsí

Vedoucí práce: Ing. David Kubička, Ph.D. MBA
Konzultant: Ing. Bogdan Shumeiko

Stručná anotace:

Diplomová práce je zaměřena na efektivní zhodnocení obnovitelných surovin díky zvýšení účinnosti deoxygenačních katalyzátorů a přispívá k naplnění „Zelené dohody pro Evropu“. Cílem práce je popsat, jak se během deoxygenace ovlivňují různé typy kyslíkatých látek, konkrétně fenoly a estery. Díky nalezení a pochopení vztahu mezi složením reakční směsi a konverzí kyslíkatých látek na žádané uhlovodíky bude možné optimalizovat složení a aktivitu deoxygenačních katalyzátorů. To přispěje k efektivnějšímu zpracování komplexních směsí kyslíkatých látek na pokročilá biopaliva. Diplomová práce je založena na běžícím výzkumném projektu a zahrnuje přípravu a charakterizaci nosičových NiMo katalyzátorů a jejich následné testování v deoxygenaci modelových směsí kyslíkatých látek.

Multifunkční katalyzátory pro zhodnocení kyslíkatých látek získaných transformací biomasy

Vedoucí práce: Ing. David Kubička, Ph.D. MBA
Konzultant: post-doc

Stručná anotace:

Diplomová práce je zaměřena na efektivní zhodnocení obnovitelných surovin integraci kondenzačních a deoxygenačních reakcí a přispívá k naplnění „Zelené dohody pro Evropu“. Cílem práce je navrhnout a ověřit katalytický systém, který umožní současnou kondenzaci nízkomolekulárních aldehydů a ketonů a deoxygenaci kondenzačních produktů. Tento inovativní přístup umožní jednostupňovou syntézu komponent pokročilých biopaliv, popřípadě petrochemických surovin. To přispěje k efektivnějšímu zpracování komplexních směsí kyslíkatých látek na pokročilá biopaliva. Diplomová práce je založena na běžícím výzkumném projektu a zahrnuje přípravu a charakterizaci multifunkčních katalyzátorů a jejich následné testování ve společné kondenzaci a deoxygenaci směsí kyslíkatých látek.

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We are happy to announce four PhD thesis topics related to our ongoing research projects focusing on biomass valorization to value-added products with the help of heterogeneous catalysis and green chemistry principles. If you would like to know more about the topics or study at the University of Chemistry and Technology Prague, please contact us. Updated on 16th February 2024.

EN: Valorization of furanic compounds by their hydrogenation

Furanic compounds are key intermediates for the chemical valorization of sugar polymers (cellulose, hemicellulose) of lignocellulosic biomass. The aim of the dissertation will be the design and study of new types of catalysts for efficient hydrogenation of 5-hydroxymethylfurfural into bis-hydroxyfuranic compounds, which are potential monomers for new types of sustainable biopolymers. Therefore, the dissertation will focus on the synthesis of hydrogenation catalysts and optimization of both the support and the active hydrogenation component, characterization of active catalyst centres, testing of activity, selectivity and stability of developed catalysts, and finding and understanding the relationships between synthesis and activity parameters of developed catalysts

EN: Design of catalysts for selective deoxygenation of phenolic compounds

Phenolic compounds are key intermediates for the chemical valorization of lignin from lignocellulosic biomass. The aim of the dissertation will be the design and study of new types of catalysts for efficient selective deoxygenation of substituted methoxyphenols, which are a feedstock with application potential for both sustainable aviation fuels (SAF) and substituted cyclohexanones. Therefore, the dissertation will focus on the synthesis of deoxygenation catalysts and optimization of both the support and the active deoxygenation component, characterization of active catalyst centres, testing of activity, selectivity and stability of developed catalysts and finding and clarifying the relationships between synthesis and activity parameters of developed catalysts

EN: Design of catalysts with tailored structural and acid-base properties

Heterogeneous catalysts can fully unlock the chemical potential of biomass if their textural and acid-base properties can be optimized for the needs of specific reactions. The aim of the dissertation will be the design and study of hierarchical approaches to the control of textural properties, optimization of chemical composition and resulting acid-basic properties of prepared catalysts. Therefore, the dissertation thesis will focus on the preparation of SiO2 catalysts modified by other oxides (Al2O3, TiO2, ZrO2, etc.) by various methods. Supports prepared in this way with controlled texture and acidity (concentration of centers and their strength) will be further modified with metals (e.g. Ni, Co, Cu) and will be tested in suitable model reactions.

EN: Conversion of methanol to hydrocarbons

Methanol plays an important role in current efforts to decarbonize the chemical industry, as it is a key intermediate in the valorisation of waste carbon dioxide. The aim of the dissertation will be the design and study of new types of catalysts for the efficient conversion of methanol to hydrocarbons. Therefore, the dissertation will focus on the synthesis of catalysts and their modification, characterization of active catalyst centres, testing of activity, selectivity and stability of developed catalysts, and finding and understanding the relationships between synthesis and activity parameters of developed catalysts.

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We are fully open to Erasmus students or trainees at all levels of their studies to improve their knowledge and skills in the laboratory. We have already invited trainees across the world from Mexico to Malaysia. The trainees can reach new knowledge in those fields:

  • organic chemistry
  • chemical engineering 
  • material science

Laboratory skills that you can obtain

  • catalyst preparation
  • work with several kinds of reactors
  • analytical methods
  • characterization of solid materials
  • analyses of the liquid reaction products

Do you want to join us? Email us!

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