Pt nanoparticles confined in the ordered mesoporous CeO2 as a highly efficient catalyst for the elimination of VOCs

doi:10.1016/j.jcat.2022.05.022

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Pt nanoparticles confined in the ordered mesoporous CeO2 as a highly efficient catalyst for the elimination of VOCs
	Wen, Meng 2,4,5; Dong, Fang 2,3,5; Yao, Jianfei 2,5; Tang, Zhicheng 1,2,5; Zhang, Jiyi 4
刊名	JOURNAL OF CATALYSIS
	2022-08-01
卷号	412 页码:42-58
关键词	Ordered mesoporous Confinement effect Pt Ce-MOF VOCs
ISSN号	0021-9517
DOI	10.1016/j.jcat.2022.05.022
英文摘要	In this study, the confined Pt/Ce-MOF were for the first time synthesized using an in-situ vacuum self assembly strategy. It is confirmed that the meso-Pt/CeO2 catalyst derived from the confined Pt/Ce-MOF has excellent activity and stability in the catalytic oxidation of toluene, which is mainly due to the effective anchoring of Pt nanoparticles in Ce-MOF, and the interface effect between Pt nanoparticles and CeO2. More importantly, it is discovered that the double-layer confinement effect of ordered mesoporous SBA 15 and Ce-MOF can effectively avoid the migration and aggregation of Pt nanoparticles, making meso-Pt/ CeO2 catalysts exhibit higher Pt dispersion. The structure-activity relationship and reaction mechanism of the meso-Pt/CeO2 catalyst were explored by in situ surface-enhanced Raman spectroscopy (SERS) and in situ DRIFTs spectra. The results show that oxygen molecules in the air are firstly adsorbed to the surface of the catalyst, and then are activated as Ce-O and Pt-O active species during the reaction process. The benzyl alcohol, benzoic acid, benzoate and maleic anhydride are the main intermediate products, indicating that the reaction pathway may be as follows: adsorption of toluene-. benzyl alcohol-. benzoic acid-. benzoate-. maleic anhydride-. ...-. carbon dioxide and water. Simultaneously, it is verified that the benzyl alcohol (C6H5-CH2O-) and carboxylic acid species is the decisive step in the oxidation of toluene on basis of in situ SERS and DRIFTs spectra.(c) 2022 Elsevier Inc. All rights reserved.
WOS研究方向	Chemistry ; Engineering
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000814761900004
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158949]
专题	石油化工学院
作者单位	1.Yantai Zhongke Res Inst Adv Mat & Green Chem Engn, Shandong Lab Yantai Adv Mat & Green Mfg, Yantai 264006, Peoples R China; 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, Natl Engn Res Ctr Fine Petrochem Intermediates, Lanzhou 730000, Peoples R China 3.Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China; 4.Lanzhou Univ Technol, Sch Petr & Chem, Lanzhou 730050, Peoples R China; 5.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China;
推荐引用方式 GB/T 7714	Wen, Meng,Dong, Fang,Yao, Jianfei,et al. Pt nanoparticles confined in the ordered mesoporous CeO2 as a highly efficient catalyst for the elimination of VOCs[J]. JOURNAL OF CATALYSIS,2022,412:42-58.
APA	Wen, Meng,Dong, Fang,Yao, Jianfei,Tang, Zhicheng,&Zhang, Jiyi.(2022).Pt nanoparticles confined in the ordered mesoporous CeO2 as a highly efficient catalyst for the elimination of VOCs.JOURNAL OF CATALYSIS,412,42-58.
MLA	Wen, Meng,et al."Pt nanoparticles confined in the ordered mesoporous CeO2 as a highly efficient catalyst for the elimination of VOCs".JOURNAL OF CATALYSIS 412(2022):42-58.