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Impact of the morphological and chemical properties of copper-zirconium-SBA-15 catalysts on the conversion and selectivity in carbon dioxide hydrogenation
Linköpings universitet, Institutionen för fysik, kemi och biologi, Nanostrukturerade material. Linköpings universitet, Tekniska fakulteten.
Linköpings universitet, Institutionen för fysik, kemi och biologi, Plasma och beläggningsfysik. Linköpings universitet, Tekniska fakulteten.
Linköpings universitet, Institutionen för fysik, kemi och biologi, Nanostrukturerade material. Linköpings universitet, Tekniska fakulteten.
Lund Univ, Sweden.
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2019 (engelsk)Inngår i: Journal of Colloid and Interface Science, ISSN 0021-9797, E-ISSN 1095-7103, Vol. 546, s. 163-173Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A hybrid catalyst consisting of Zr-doped mesoporous silica (Zr-SBA-15) supports with intergrown Cu nanoparticles was used to study the effects of a catalysts chemical states on CO2 hydrogenation. The chemical state of the catalyst was altered by using tetraethyl orthosilicate (TEOS) or sodium metasilicate (SMS) as the silica precursor in the synthesis of the Zr-SBA-15 framework, and infiltration (Inf) or evaporation induced wetness impregnation (EIWI) as the Cu loading method. As a result, the silica precursor mainly affects the activity of the catalyst whereas the Cu loading method alters the selectivity of the products. TEOS materials exhibit a higher catalytic activity compared to SMS materials due to different Zr dispersion and bonding to the silica matrix. EIWI catalysts display selectivity for methanol formation, while the Inf ones enable methanol conversion to DME. This is correlated to a higher Zr content and lower Cu oxidation states of EIWI prepared catalysts. (C) 2019 Elsevier Inc. All rights reserved.

sted, utgiver, år, opplag, sider
ACADEMIC PRESS INC ELSEVIER SCIENCE , 2019. Vol. 546, s. 163-173
Emneord [en]
Zr doped SBA-15; Cu nanoparticles; CO2 hydrogenation; Methanol; Dimethyl ether
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Identifikatorer
URN: urn:nbn:se:liu:diva-158046DOI: 10.1016/j.jcis.2019.03.046ISI: 000466054200017PubMedID: 30913490OAI: oai:DiVA.org:liu-158046DiVA, id: diva2:1330175
Merknad

Funding Agencies|EUs Erasmus-Mundus program (European School of Materials - Doctoral Programme - DocMASE); Swedish Energy Agency [P42022-1]; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University (Faculty Grant SFO-Mat-LiU grant) [2009-00971]; Swedish Research Council [2015-00624]; Vinnova [2016-05156]; Knut and Alice Wallenberg Foundation [2012.0083]

Tilgjengelig fra: 2019-06-25 Laget: 2019-06-25 Sist oppdatert: 2019-06-25

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