Literature DB >> 26797803

Catalytically Active Rh Sub-Nanoclusters on TiO2 for CO Oxidation at Cryogenic Temperatures.

Hongling Guan1,2, Jian Lin1, Botao Qiao1, Xiaofeng Yang1, Lin Li1, Shu Miao1, Jingyue Liu3, Aiqin Wang1, Xiaodong Wang4, Tao Zhang5.   

Abstract

The discovery that gold catalysts could be active for CO oxidation at cryogenic temperatures has ignited much excitement in nanocatalysis. Whether the alternative Pt group metal (PGM) catalysts can exhibit such high performance is an interesting research issue. So far, no PGM catalyst shows activity for CO oxidation at cryogenic temperatures. In this work, we report a sub-nano Rh/TiO2 catalyst that can completely convert CO at 223 K. This catalyst exhibits at least three orders of magnitude higher turnover frequency (TOF) than the best Rh-based catalysts and comparable to the well-known Au/TiO2 for CO oxidation. The specific size range of 0.4-0.8 nm Rh clusters is critical to the facile activation of O2 over the Rh-TiO2 interface in a form of Rh-O-O-Ti (superoxide). This superoxide is ready to react with the CO adsorbed on TiO2 sites at cryogenic temperatures.
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Entities:  

Keywords:  carbon monoxide oxidation; catalysis; clusters; cryogenic temperatures; rhodium

Year:  2016        PMID: 26797803     DOI: 10.1002/anie.201510643

Source DB:  PubMed          Journal:  Angew Chem Int Ed Engl        ISSN: 1433-7851            Impact factor:   15.336


  4 in total

1.  Metal Catalysts for Heterogeneous Catalysis: From Single Atoms to Nanoclusters and Nanoparticles.

Authors:  Lichen Liu; Avelino Corma
Journal:  Chem Rev       Date:  2018-04-16       Impact factor: 60.622

2.  Co/Cu-MFF derived mesoporous ternary metal oxide microcubes for enhancing the catalytic activity of the CO oxidation reaction.

Authors:  Huijun Song; Li Zhang; Guancheng Xu; Chi Zhang; Xin Ma; Lu Zhang; Dianzeng Jia
Journal:  RSC Adv       Date:  2018-07-10       Impact factor: 4.036

3.  Poly-phenylene jacketed tailor-made dendritic phenylazomethine ligand for nanoparticle synthesis.

Authors:  Ken Albrecht; Maki Taguchi; Takamasa Tsukamoto; Tatsuya Moriai; Nozomi Yoshida; Kimihisa Yamamoto
Journal:  Chem Sci       Date:  2022-03-18       Impact factor: 9.969

4.  Carbon nitride supported Fe2 cluster catalysts with superior performance for alkene epoxidation.

Authors:  Shubo Tian; Qiang Fu; Wenxing Chen; Quanchen Feng; Zheng Chen; Jian Zhang; Weng-Chon Cheong; Rong Yu; Lin Gu; Juncai Dong; Jun Luo; Chen Chen; Qing Peng; Claudia Draxl; Dingsheng Wang; Yadong Li
Journal:  Nat Commun       Date:  2018-06-15       Impact factor: 14.919

  4 in total

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