J 2020

CO2 Hydrogenation to Methanol with Ga- and Zn-Doped Mesoporous Cu/SiO2 Catalysts Prepared by the AerosolAssisted Sol-Gel Process

PARIS, Charlie, Alejandro KARELOVIC, Raydel MANRIQUE, Solène LE BRAS, François DEVRED et. al.

Basic information

Original name

CO2 Hydrogenation to Methanol with Ga- and Zn-Doped Mesoporous Cu/SiO2 Catalysts Prepared by the AerosolAssisted Sol-Gel Process

Authors

PARIS, Charlie, Alejandro KARELOVIC, Raydel MANRIQUE, Solène LE BRAS, François DEVRED, Vít VYKOUKAL (203 Czech Republic, guarantor, belonging to the institution), Aleš STÝSKALÍK (203 Czech Republic, belonging to the institution), Pierre ELOY and Damien P. DEBECKER

Edition

ChemSusChem, Weinheim, Wiley-VCH GmbH, 2020, 1864-5631

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10405 Electrochemistry

Country of publisher

Germany

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 8.928

RIV identification code

RIV/00216224:14310/20:00117584

Organization unit

Faculty of Science

UT WoS

000577759300001

Keywords in English

aerosol-assisted sol-gel process; CH3OH synthesis; CO2 hydrogenation; copper catalyst; mesoporous metallosilicate

Tags

Tags

International impact, Reviewed
Změněno: 17/10/2024 17:25, Ing. Martina Blahová

Abstract

V originále

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.

Links

90110, large research infrastructures
Name: CzechNanoLab
90127, large research infrastructures
Name: CIISB II