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@article{1719957,
author = {Paris, Charlie and Karelovic, Alejandro and Manrique, Raydel and Le Bras, Solène and Devred, François and Vykoukal, Vít and Stýskalík, Aleš and Eloy, Pierre and Debecker, Damien P.},
article_location = {Weinheim},
article_number = {23},
doi = {http://dx.doi.org/10.1002/cssc.202001951},
keywords = {aerosol-assisted sol-gel process; CH3OH synthesis; CO2 hydrogenation; copper catalyst; mesoporous metallosilicate},
language = {eng},
issn = {1864-5631},
journal = {ChemSusChem},
title = {CO2 Hydrogenation to Methanol with Ga- and Zn-Doped Mesoporous Cu/SiO2 Catalysts Prepared by the AerosolAssisted Sol-Gel Process},
url = {https://doi.org/10.1002/cssc.202001951},
volume = {13},
year = {2020}
}
TY - JOUR
ID - 1719957
AU - Paris, Charlie - Karelovic, Alejandro - Manrique, Raydel - Le Bras, Solène - Devred, François - Vykoukal, Vít - Stýskalík, Aleš - Eloy, Pierre - Debecker, Damien P.
PY - 2020
TI - CO2 Hydrogenation to Methanol with Ga- and Zn-Doped Mesoporous Cu/SiO2 Catalysts Prepared by the AerosolAssisted Sol-Gel Process
JF - ChemSusChem
VL - 13
IS - 23
SP - 6409-6417
EP - 6409-6417
PB - Wiley-VCH GmbH
SN - 18645631
KW - aerosol-assisted sol-gel process
KW - CH3OH synthesis
KW - CO2 hydrogenation
KW - copper catalyst
KW - mesoporous metallosilicate
UR - https://doi.org/10.1002/cssc.202001951
L2 - https://doi.org/10.1002/cssc.202001951
N2 - The preparation of copper-based heterogeneous catalysts dedicated to the hydrogenation of CO2 to methanol typically relies on multi-step procedures carried out in batch. These steps are precisely tailored to introduce the active phase (Cu) and the promoters (e. g., zinc, gallium) onto a preformed support to maximize catalyst performance. However, each process step can be associated with the formation of waste and with the consumption of energy, thereby negatively impacting the environmental performance of the overall catalyst preparation procedure. Here, a direct and continuous production process is proposed for the synthesis of efficient catalysts for the CO2-to-methanol reaction. Gallium- and zinc-promoted mesoporous Cu-SiO2 catalysts were prepared in one step by the aerosol-assisted sol-gel process. The catalysts consisted of spherical microparticles and featured high specific surface area and pore volume, with interconnected pores of about 6 nm. A strong promoting effect of Ga and Zn was highlighted, boosting the selectivity for methanol at the expense of CO. Upon calcination, it was shown that Cu species (initially trapped in the silica matrix) underwent a migration towards the catalyst surface and a progressive sintering. After optimization, the catalysts obtained via such direct, continuous, simple, and scalable route could compete with the best catalysts reported in the literature and obtained via multi-step approaches.
ER -
PARIS, Charlie, Alejandro KARELOVIC, Raydel MANRIQUE, Solène LE BRAS, Fran$\backslash$c cois DEVRED, Vít VYKOUKAL, Aleš STÝSKALÍK, Pierre ELOY a Damien P. DEBECKER. CO2 Hydrogenation to Methanol with Ga- and Zn-Doped Mesoporous Cu/SiO2 Catalysts Prepared by the AerosolAssisted Sol-Gel Process. \textit{ChemSusChem}. Weinheim: Wiley-VCH GmbH, 2020, roč.~13, č.~23, s.~6409-6417. ISSN~1864-5631. Dostupné z: https://dx.doi.org/10.1002/cssc.202001951.
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