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Rh promoted In2O3 as a highly active catalyst for CO2 hydrogenation to methanol

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Title: Rh promoted In2O3 as a highly active catalyst for CO2 hydrogenation to methanol
Authors: Dostagir, Nazmul Hasan M. D. Browse this author
Thompson, Coogan Browse this author
Kobayashi, Hirokazu Browse this author →KAKEN DB
Karim, Ayman M. Browse this author
Fukuoka, Atsushi Browse this author →KAKEN DB
Shrotri, Abhijit Browse this author
Issue Date: 21-Dec-2020
Publisher: Royal Society of Chemistry
Journal Title: Catalysis science and technology
Volume: 10
Issue: 24
Start Page: 8196
End Page: 8202
Publisher DOI: 10.1039/d0cy01789b
Abstract: Synthesis of methanol with high selectivity and productivity through hydrogenation of CO2 is highly attractive. This work uses a Rh doped In2O3 catalyst to achieve a high methanol productivity of 1.0 g(MeOH) h(-1) g(cat)(-1) while maintaining the intrinsic high selectivity of pure In2O3. Rh facilitated the dissociation of H-2 leading to creation of oxygen vacancies over the In2O3 surface. In addition, Rh atoms also participated in the activation of CO2 to produce formate species with a low activation barrier as evidenced by DFT calculation. Rh species were atomically dispersed in the In2O3 matrix and were stable during a long term reaction. Under reaction conditions, the surface Rh atoms were reduced and were stabilized by charge transfer from neighbouring In atoms. Our results show that incorporation of atomic Rh species in In2O3 can lead to high methanol productivity by creation of oxygen vacancies as well as Rh centred active sites for CO2 activation.
Type: article (author version)
Appears in Collections:触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 福岡 淳

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