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Titolo:
Factorial design for the evaluation of the influence of preparation parameters upon the properties of dispersed molybdenum sulfide catalysts
Autore:
Rueda, N; Bacaud, R; Lanteri, P; Vrinat, M;
Indirizzi:
Inst Rech Catalyse, CNRS, F-69626 Villeurbanne, France Inst Rech CatalyseVilleurbanne France F-69626 9626 Villeurbanne, France Univ Lyon 1, Dept Chimiometrie, F-69622 Villeurbanne, France Univ Lyon 1 Villeurbanne France F-69622 ie, F-69622 Villeurbanne, France
Titolo Testata:
APPLIED CATALYSIS A-GENERAL
fascicolo: 1-2, volume: 215, anno: 2001,
pagine: 81 - 89
SICI:
0926-860X(20010713)215:1-2<81:FDFTEO>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEAVY OIL RESIDUES; DEEP HYDROCONVERSION;
Keywords:
molybdenum sulfide; molybdenum naphthenate; dispersed catalyst; sulfidation; factorial design;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Bacaud, R Inst Rech Catalyse, CNRS, 2 Ave Albert Einstein, F-69626 Villeurbanne, France Inst Rech Catalyse 2 Ave Albert Einstein Villeurbanne FranceF-69626
Citazione:
N. Rueda et al., "Factorial design for the evaluation of the influence of preparation parameters upon the properties of dispersed molybdenum sulfide catalysts", APP CATAL A, 215(1-2), 2001, pp. 81-89

Abstract

Oil-soluble molybdenum precursors such as naphthenates are used as additives for the hydroconversion of heavy petroleum residues. Under the conditions of hydroconversion processes, molybdenum naphthenate yields molybdenum sulfide and, simultaneously, a carbonaceous phase is produced. The complex solid resulting from the interaction of these phases exhibits a high surface area, outstanding catalytic activity and stability. These properties are attributed to the presence of the carbon phase. The present work consists in a systematic investigation of the influence of compositional and physical parameters upon the composition, surface area and catalytic properties of dispersed molybdenum sulfides generated in a pure synthetic medium representative of crude oil, A factorial design, based upon previous results concerning the nature of the catalytic precursor, has been elaborated. The following parameters have been considered in the present study: nature of the solvent (aromatic or aliphatic), nature of the sulfiding reagent, temperature, concentration of the precursor, residence time. It has been established thatthe nature of the solvent (aromatic or aliphatic) and the sulfiding reactant had a significant influence on the properties. An interactive effect between the nature of the sulfiding reagent and the concentration of the precursor has been evidenced. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 14/08/20 alle ore 06:17:35