Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Preferential orientation of VOHPO4 center dot 0.5H(2)O prepared by reducing VOPO4 center dot 2H(2)O with alcohol
Autore:
Wang, XH; Lu, GZ; Huang, ZT;
Indirizzi:
E China Univ Sci & Technol, Res Inst Ind Ctalysis, Shanghai 200237, Peoples R China E China Univ Sci & Technol Shanghai Peoples R China 200237 oples R China S China Univ Technol, Dept Chem Engn, Guangzhou 510641, Peoples R China S China Univ Technol Guangzhou Peoples R China 510641 1, Peoples R China
Titolo Testata:
CHINESE JOURNAL OF CATALYSIS
fascicolo: 1, volume: 22, anno: 2001,
pagine: 26 - 30
SICI:
0253-9837(200101)22:1<26:POOVCD>2.0.ZU;2-N
Fonte:
ISI
Lingua:
CHI
Soggetto:
MALEIC-ANHYDRIDE; X-RAY; OXIDATION; BUTANE; FILMS;
Keywords:
alcohol; oxyvanadium phosphate; reduction; oxyvanadium monohydric phosphate; preferential orientation; n-butane; oxidation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Wang, XH E China Univ Sci & Technol, Res Inst Ind Ctalysis, Shanghai 200237, Peoples R China E China Univ Sci & Technol Shanghai Peoples R China 200237 hina
Citazione:
X.H. Wang et al., "Preferential orientation of VOHPO4 center dot 0.5H(2)O prepared by reducing VOPO4 center dot 2H(2)O with alcohol", CHIN J CATA, 22(1), 2001, pp. 26-30

Abstract

VOHPO4 . 0.5H(2)O was prepared by reducing VOPO4. 2H(2)O with various alcohols and then calcinated in n-butane/air to produce the final catalysts. The preferential orientation of VOHPO4.0.5H(2)O and the influence of the preferential exposition of the plane of the final catalysts on catalytic oxidation of n-butane to maleic anhydride (MA) were investigated. VOHPO4 . 0.5H(2)O with rose-like or twist agglomerated type structure prepared by reducingVOPO4 . 2H(2)O with primary alcohol orientates preferentially the (220) plane, the final catalyst contains only (VO)(2)P2O7 phase, the (020) plane ispreferential exposition. VOHPO4 . 0.5H(2)O with platelet type structure prepared by reducing VOPO4 . 2H(2)O with secondary alcohol orientates preferentially the (001) plane, the final catalyst is composed of (VO)(2)P2O7, VOPO4 and amorphous phase, and the exposition of the (020) plane of (VO)(2)P2O7 is less. The XRD patterns of VOHPO4 . 0.5H(2)O prepared from cyclohexanol, benzyl alcohol and 3-methyl-3-enanthol are similar to that prepared from secondary alcohol. VOHPO4 . 0.5H(2)O derived from V2O5/isobutanol/H3PO4 (ordinary method) has no the preferential orientation of the plane. The results show that the catalytic properties of the final catalyst prepared from 1-octyl alcohol for the oxidation of n-butane to MA are superior to that of the catalyst derived from 2-octyl alcohol and ordinary method.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/07/20 alle ore 20:38:00