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Titolo:
Heteropolyoxometalates which are included in microporous silica, CsxH3-xPMo12O40/SiO2 and CsyH5-yPMo10V2O40/SiO2, as insoluble solid bifunctional catalysts: synthesis and selective oxidation of benzyl alcohol in liquid-solidsystems
Autore:
Peng, G; Wang, YH; Hu, CW; Wang, EB; Feng, SH; Zhou, YC; Ding, H; Liu, YY;
Indirizzi:
NE Normal Univ, Fac Chem, Inst Polyoxometalate Chem, Changchun 130024, Peoples R China NE Normal Univ Changchun Peoples R China 130024 130024, Peoples R China Jilin Univ, Key Lab Inorgan Synth & Preparat Chem, Changchun 130023, Peoples R China Jilin Univ Changchun Peoples R China 130023 chun 130023, Peoples R China Inst Res & Innovat, Div Chem Technol, Kashiwa, Chiba 277, Japan Inst Res &Innovat Kashiwa Chiba Japan 277 nol, Kashiwa, Chiba 277, Japan
Titolo Testata:
APPLIED CATALYSIS A-GENERAL
fascicolo: 1-2, volume: 218, anno: 2001,
pagine: 91 - 99
SICI:
0926-860X(20010925)218:1-2<91:HWAIIM>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
HETEROPOLY COMPOUNDS; ACID CATALYSIS; ZEOLITES; ESTERS; WATER; CS2.5H0.5PW12O40; HYDROLYSIS; MOLYBDENUM; TUNGSTEN; ANION;
Keywords:
microporous heteropolyoxometalates; nanometer particles; synthesis; structural characterization; selective oxidation; benzyl alcohol; benzyl aldehyde;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Hu, CW NE Normal Univ, Fac Chem, Inst Polyoxometalate Chem, Changchun 130024, Peoples R China NE Normal Univ Changchun Peoples R China 130024 , Peoples R China
Citazione:
G. Peng et al., "Heteropolyoxometalates which are included in microporous silica, CsxH3-xPMo12O40/SiO2 and CsyH5-yPMo10V2O40/SiO2, as insoluble solid bifunctional catalysts: synthesis and selective oxidation of benzyl alcohol in liquid-solidsystems", APP CATAL A, 218(1-2), 2001, pp. 91-99

Abstract

Heteropolyoxometalates (HPOMs) which are included in microporous silica, CsxH3-xPMo12O40/SiO2 and CsyH5-yPMo10 V2O40/SiO2, have been synthesized by asol-gel technique and characterized by IR. UV-VIS, X-ray and N-2 adsorption isotherms. IR and UV-VIS data indicate that the identities of CsxH3-xPMo12O40 and CsyH(5-y)PMo(10)V(2)O(40) are preserved within these synthesized compounds. TEM image and BET adsorption isotherms confirm the presence of nanometer particles and microporous structures. X-ray powder patterns prove that the cesium salts of the HPOMs are uniformly dispersed in the silica network. As insoluble solid bifunctional catalysts, they show high catalytic activity and selectivity for selective oxidation of benzyl alcohol into benzyl aldehyde by H2O2 in liquid-solid systems. The highest activity is observed at x = 1.5 or y = 2.5 in CsxH3-xPMo12O40/SiO2 or CsyH5-yPMo10V2O40/SiO2,respectively. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 16/07/20 alle ore 20:01:49