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Titolo:
PHOSPHORUS PROMOTED WS2 AL2O3 CATALYSTS STUDIED BY TRANSMISSION ELECTRON-MICROSCOPY/
Autore:
CRUZREYES J; LOPEZAGUDO A; LOPEZCORDERO R; AVALOSBORJA M; FUENTES S; FARIAS MH;
Indirizzi:
UABC,FAC CIENCIAS QUIM,APARTADO POSTAL 117-B TIJUANA 22100 BAJA CALIFORNIA MEXICO CTR INVEST QUIM HAVANA CUBA UNAM,INST FIS,LAB ENSENADA ENSENADA 22800 BAJA CALIFORNIA MEXICO CSIC,INST CATALISIS & PETR QUIM MADRID 28049 SPAIN
Titolo Testata:
Catalysis letters
fascicolo: 3-4, volume: 42, anno: 1996,
pagine: 119 - 126
SICI:
1011-372X(1996)42:3-4<119:PPWACS>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOLYBDENUM ALUMINA CATALYSTS; HYDRODESULFURIZATION CATALYSTS; OXIDE FORM; SULFIDES; SYSTEMS; MOS2; HDS;
Keywords:
PHOSPHORUS-CONTAINING CATALYSTS; TUNGSTEN DISULFIDE; HIGH-RESOLUTION ELECTRON MICROSCOPY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
27
Recensione:
Indirizzi per estratti:
Citazione:
J. Cruzreyes et al., "PHOSPHORUS PROMOTED WS2 AL2O3 CATALYSTS STUDIED BY TRANSMISSION ELECTRON-MICROSCOPY/", Catalysis letters, 42(3-4), 1996, pp. 119-126

Abstract

A series of WS2/Al2O3 catalysts containing a varied amount of phosphorus (0.0, 2.5 and 6.0 wt% P2O5), sulfided at two different temperatures (873 and 1073 K), were studied by means of high-resolution transmission electron microscopy (HRTEM). The stacking of(002) layers in the WS2-2H crystallites of the ''rag'' structure increases with the additionof phosphorus, whereas its length is kept almost constant. At high sulfidation temperatures phosphorus shows a stabilizing affect on the catalysts by retarding the stacking growth of WS2 crystallites. Additionally, an aluminum phosphate crystalline phase is identified in the phosphorus promoted catalysts.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 04:22:01