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Titolo:
SURFACE-STRUCTURE AND ACIDITY OF ALUMINA-BORIA CATALYSTS
Autore:
SATO S; KUROKI M; SODESAWA T; NOZAKI F; MACIEL GE;
Indirizzi:
CHIBA UNIV,FAC ENGN,DEPT APPL CHEM CHIBA 263 JAPAN COLORADO STATE UNIV,DEPT CHEM FT COLLINS CO 80523
Titolo Testata:
Journal of molecular catalysis. A, Chemical
fascicolo: 2, volume: 104, anno: 1995,
pagine: 171 - 177
SICI:
1381-1169(1995)104:2<171:SAAOAC>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHEMICAL VAPOR-DEPOSITION; PHASE BECKMANN REARRANGEMENT; NUCLEAR MAGNETIC-RESONANCE; MAS NMR-SPECTRA; DECOMPOSITION METHOD; SI-29; STATE; B-11; COORDINATION; BORATE;
Keywords:
B-11 MAS NMR; ALUMINA-BORIA; ACID SITES; BRONSTED ACID SITES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
21
Recensione:
Indirizzi per estratti:
Citazione:
S. Sato et al., "SURFACE-STRUCTURE AND ACIDITY OF ALUMINA-BORIA CATALYSTS", Journal of molecular catalysis. A, Chemical, 104(2), 1995, pp. 171-177

Abstract

Both surface berate structures and acidities of alumina-boria catalysts prepared by supporting B2O3 (boria) on an alumina support were investigated by using both B-11 magic angle spinning (MAS) NMR measurements and temperature-programmed desorption (TPD) of adsorbed pyridines, together with the catalytic properties of these alumina-boria materialsfor l-butene isomerization. The concentrations of tetrahedral oxygen-coordinated berate (BO4) species as well as number of Bronsted acid sites were found to increase with increasing boria content. The catalytic activity for l-butene isomerization was found to be caused by the strong Bronsted acid sites generated from BO4 species on the surface of alumina.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/11/17 alle ore 05:51:03