Adsorption properties of organic compounds on deoxygenation catalysts

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F23%3A10253354" target="_blank" >RIV/61989100:27710/23:10253354 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Adsorption properties of organic compounds on deoxygenation catalysts

Original language description

The results were presented at the SSCHE conference in Tatranske Matliare (15.-18.5.2023) as a poster presentationConverting of biomass-derived feedstock into sustainable chemicals or biofuels in the presence of catalyst represents an interesting possibility of its processing. Many catalysts have been already tested and Cu-Ni catalysts show promising results.For better understanding of the whole catalytic process, it is important to investigate and describe the physico-chemical properties of the catalysts, especially acidity, reducibility and adsorption/desorption behavior of the organic compounds and hydrogen on the catalyst surface.In this paper, the Cu/Ni-based catalysts with different Cu and Ni loading supported on alumina were studied. For its preparation, the wet impregnation method was used. TPD NH3 was used for the characterization of catalysts basicity and TPR H2 for the reducibility. Adsorption properties of H2 were evaluated by TPD H2, while selected organic compounds (e.g. anisole and guaiacol) were used for the adsorption/desorption studies at temperature range of 35-480 oC using temperature programmed techniques. The number of surface Cu and Ni sites was determined by reactive frontal chromatography and hydrogen pulse chemisorption, respectively.The results were presented at the SSCHE conference in Tatranske Matliare (15.-18.5.2023) as a poster presentationIt can be concluded that catalyst reducibility is strongly influenced by metal-support interaction as well as by interaction between metals in bimetallic catalyst. Anisole is weakly adsorbed on acid sites of the alumina support. The amount of acid sites decreased with increasing metal loading and so did the specific surface area. Weakly adsorbed guaiacol did not follow the trend of anisole, i.e. did not correlate with amount of catalyst acid sites. Moreover, the number of adsorbed organics was much higher than that desorbed during TPD, which point out chemisorption and strong interaction of the adsorbate with catalyst surface.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

20400 - Chemical engineering

Project

<a href="/en/project/GA22-12925S" target="_blank" >GA22-12925S: Investigation of the key factors affecting hydrogenation/deoxygenation of mixtures of oxygenates</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů