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Titolo:
Studies of preparation and stability of Au/Fe2O3 catalyst for CO oxidationat ambient temperature and moisture
Autore:
Wang, GY; Yu, JY; Lian, HL; Li, XM; Jia, MJ; Zhang, WX; Wu, TH; Ge, YD;
Indirizzi:
Jilin Univ, Dept Chem, Changchun 130023, Peoples R China Jilin Univ Changchun Peoples R China 130023 chun 130023, Peoples R China Dalian Inst Light Ind, Dept Chem Engn, Dalian 116020, Peoples R China Dalian Inst Light Ind Dalian Peoples R China 116020 020, Peoples R China Adv Personal Training Ctr Daqing Oil Filed, Daqing 167443, Peoples R ChinaAdv Personal Training Ctr Daqing Oil Filed Daqing Peoples R China 167443
Titolo Testata:
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
fascicolo: 5, volume: 21, anno: 2000,
pagine: 752 - 755
SICI:
0251-0790(200005)21:5<752:SOPASO>2.0.ZU;2-5
Fonte:
ISI
Lingua:
CHI
Soggetto:
SUPPORTED GOLD CATALYSTS; PHOSPHINE COMPLEX AU(PPH3)(NO3); SURFACE CHARACTERIZATION; CARBON-MONOXIDE; OXIDE; ADSORPTION; MECHANISM; BEHAVIOR;
Keywords:
Au/Fe2O3; ambient temperature and moisture; catalytic oxidation of carbon monooxide; stability;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Zhang, WX Jilin Univ, Dept Chem, Changchun 130023, Peoples R China Jilin Univ Changchun Peoples R China 130023 3, Peoples R China
Citazione:
G.Y. Wang et al., "Studies of preparation and stability of Au/Fe2O3 catalyst for CO oxidationat ambient temperature and moisture", CHEM J CH U, 21(5), 2000, pp. 752-755

Abstract

The catalytic performance of CO oxidation at ambient temperature and moisture over Au/Fe2O3 catalysts prepared by different methods was studied. It was found that the stability of the catalysts was greatly changed with the variation of the preparation methods, the kind of precipitant, calcination temperature, and Au loading. The sample of 3%Au/Fe2O3 prepared by adding HAuCl4 and Fe-2(NO3)(3) with K2CO3 or Na2CO3 as the precipitants, calcined at 250-350 degrees C in air for 3 h has the best stability and the best ability of resisting moisture, that is, the sample can maintain CO complete conversion at 25 degrees C and ambient moisture for at least 430 h. The XRD results indicate that the stability is inversely proportional to the metallic gold and alpha-Fe2O3 particle sizes, and the chemical states of gold and iron were the main controlling factors of the stability of Au/Fe2O3.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 04:52:01