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Titolo:
HIGH-RESOLUTION ELECTRON-MICROSCOPY CHARACTERIZATION OF SULFIDED PALLADIUM PARTICLES ON AMORPHOUS SIO2
Autore:
VAZQUEZ A; YANEZ MJ; FUENTES S; AVALOSBORJA M;
Indirizzi:
UNAM,INST FIS,A POSTAL 20-364 MEXICO CITY 01000 DF MEXICO UNAM,INST FIS ENSENADA 22800 BAJA CALIFORNIA MEXICO
Titolo Testata:
Catalysis letters
fascicolo: 2-4, volume: 28, anno: 1994,
pagine: 351 - 360
SICI:
1011-372X(1994)28:2-4<351:HECOSP>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
CATALYST PARTICLES; SULFUR; SULFIDATION; ADSORPTION;
Keywords:
SULFIDATION; ELECTRON MICROSCOPY; PALLADIUM CATALYSTS; NOBLE METAL SULFIDES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
16
Recensione:
Indirizzi per estratti:
Citazione:
A. Vazquez et al., "HIGH-RESOLUTION ELECTRON-MICROSCOPY CHARACTERIZATION OF SULFIDED PALLADIUM PARTICLES ON AMORPHOUS SIO2", Catalysis letters, 28(2-4), 1994, pp. 351-360

Abstract

The microstructure of palladium particles deposited on a porous silica support was examined by high resolution microscopy following varioussulfidation treatments. For catalysts sulfided by the reaction itself(hydrodesulfurization of thiophene), the micrographs show large particles where an amorphous sulfide layer surrounds the Pd core; in the case of small particles, the presence of PdS2 was identified. For catalysts sulfided under 20% H2S/H-2 at 623 K, the particles show lattice planes compatible with PdS2 and PdS. By increasing the sulfidation temperature to 723 K, faceted PdS particles are mostly formed. Some structural defects related to the sulfidation treatment are also shown.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 04:29:26