Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.apcatb.2021.120994
Title: Atomic Pd-promoted ZnZrO<inf>x</inf> solid solution catalyst for CO<inf>2</inf> hydrogenation to methanol
Authors: Lee, K 
Anjum, U 
Araújo, TP
Mondelli, C
He, Q 
Furukawa, S
Perez-Ramirez, J 
Kozlov, SM 
Yan, N 
Issue Date: 1-May-2022
Publisher: Elsevier BV
Citation: Lee, K, Anjum, U, Araújo, TP, Mondelli, C, He, Q, Furukawa, S, Perez-Ramirez, J, Kozlov, SM, Yan, N (2022-05-01). Atomic Pd-promoted ZnZrOx solid solution catalyst for CO2 hydrogenation to methanol. Applied Catalysis B: Environmental 304 : 120994-120994. ScholarBank@NUS Repository. https://doi.org/10.1016/j.apcatb.2021.120994
Abstract: The development of efficient CO2 conversion catalysts is a long-lasting desire. Herein, we introduce an atomic Pd-promoted ZnZrOx solid solution catalyst (Pd-ZnZrOx), which shows markedly enhanced rate of methanol production compared to bare ZnZrOx, as well as excellent stability over 100 h on stream. Up to 0.8 at% (i.e. 0.6 wt%), Pd can be atomically dispersed in ZnZrOx, leading to more oxygen vacancies on the mixed oxide that foster methanol production. Kinetic analysis and in situ DRIFTS reveal that hydrogen activation is limited on ZnZrOx, but Pd doping facilitates H2 dissociation as well as the consequent formation of HCOO*, thus boosting CO2 conversion to methanol. DFT analyses suggest that the presence of atomic Pd enables a more exothermic H2 dissociation, which increases the availability of surface H and facilitates CO2 hydrogenation on adjacent Zn sites, providing rationale on the high activity and robustness of Pd-ZnZrOx in CO2 hydrogenation.
Source Title: Applied Catalysis B: Environmental
URI: https://scholarbank.nus.edu.sg/handle/10635/216356
ISSN: 09263373
DOI: 10.1016/j.apcatb.2021.120994
Appears in Collections:Staff Publications
Elements

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
1-s2.0-S092633732101119X-main (1).pdf8.13 MBAdobe PDF

CLOSED

Published
pagination_APCATB_120994.pdfAccepted version3.02 MBAdobe PDF

CLOSED

Published

SCOPUSTM   
Citations

15
checked on Jan 26, 2023

Page view(s)

94
checked on Feb 2, 2023

Download(s)

4
checked on Feb 2, 2023

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.