Intraparticle diffusional effects and kinetics of desulfurization reactions and asphaltenes cracking during catalytic hydrotreatment of a residue

Philippopoulos, C; Papayannakos, N

dc.contributor.author	Philippopoulos, C	en
dc.contributor.author	Papayannakos, N	en
dc.date.accessioned	2014-03-01T01:07:11Z
dc.date.available	2014-03-01T01:07:11Z
dc.date.issued	1988	en
dc.identifier.issn	08885885	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9839
dc.subject	Kinetics	en
dc.subject.other	CATALYSTS - Cobalt Compounds	en
dc.subject.other	CHEMICAL EQUIPMENT - Reactors	en
dc.subject.other	CHEMICAL REACTIONS - Desulfurization	en
dc.subject.other	PETROLEUM, CRUDE - Components	en
dc.subject.other	ASPHALTENES	en
dc.subject.other	CATALYST EXTRUDATES	en
dc.subject.other	CATALYTIC HYDROTREATMENT	en
dc.subject.other	INTRAPARTICLE DIFFUSIONAL EFFECTS	en
dc.subject.other	RESIDUE	en
dc.subject.other	HYDROCARBONS	en
dc.title	Intraparticle diffusional effects and kinetics of desulfurization reactions and asphaltenes cracking during catalytic hydrotreatment of a residue	en
heal.type	journalArticle	en
heal.identifier.primary	10.1021/ie00075a009	en
heal.identifier.secondary	http://dx.doi.org/10.1021/ie00075a009	en
heal.publicationDate	1988	en
heal.abstract	The cracking of asphaltenes and the desulfurization of asphaltenic and non-asphaltenic fractions of a residue were studied in a bench-scale, tubular, trickle bed reactor. Reaction conditions were 50 bar and 350-430°C. Two types of commercial Co-Mo/Al2O3 catalysts were used. The experimental intrinsic rate data were described by the power-law rate equation for both cracking of asphaltenes and desulfurization reactions of the asphaltenic and non-asphaltenic fractions. The values of the effective diffusivity for each type of reaction have been determined from data derived from experiments carried out by using catalyst extrudates. The ratios of the effective diffusivities for the bimodal catalyst to those for the unimodal catalyst were equal to 2.9 ± 0.1 for both cracking and desulfurization reactions. The effective diffusivities for cracking and desulfurization reactions of asphaltenes were identical for both catalysts used. © 1988 American Chemical Society.	en
heal.journalName	Industrial and Engineering Chemistry Research	en
dc.identifier.doi	10.1021/ie00075a009	en
dc.identifier.volume	27	en
dc.identifier.issue	3	en
dc.identifier.spage	415	en
dc.identifier.epage	420	en