Tuning the Phase Structure of ZnTiO3 Support to Promote the Catalytic Activity of Pd/ZnTiO3 Catalyst for the CO Oxidative Coupling to Dimethyl Oxalate

Zinc titanate (ZnTiO3) has recently been applied in various areas for its unique properties. Herein, through tuning the phase structures of ZnTiO3 support, we synthesized two different Pd‐based catalysts for CO oxidative coupling to DMO and further investigated their structure‐activity relationships...

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Published inHelvetica chimica acta Vol. 105; no. 6
Main Authors Liu, Geng‐Wei, Pan, Peng‐Bin, Zhang, Xin, Huang, Yuan‐Yuan, Liu, Peng, Qin, Ye‐Yan, Yao, Yuan‐Gen
Format Journal Article
LanguageEnglish
Published Zürich Wiley Subscription Services, Inc 01.06.2022
Subjects
Carbon monoxide
Catalysts
Catalytic activity
Chemical synthesis
Coupling
dimethyl oxalate
heterogeneous catalysis
Oxalic acid
Palladium
Solid phases
titanates
Tuning
zinc titanate
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Summary:Zinc titanate (ZnTiO3) has recently been applied in various areas for its unique properties. Herein, through tuning the phase structures of ZnTiO3 support, we synthesized two different Pd‐based catalysts for CO oxidative coupling to DMO and further investigated their structure‐activity relationships for the first time. The results indicated that the strong metal‐support interaction between the cubic phase ZnTiO3 and Pd species leads to an enriched Pd electronic density and promotes the bridged CO adsorption. As a result, the as‐synthesized catalyst with cubic phase ZnTiO3 performed a turnover frequency (TOF) of 339.3 min−1, which was much higher than the hexagonal one (226.3 min−1).
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:0018-019X
1522-2675
DOI:10.1002/hlca.202200017