The application of non-hydrothermally prepared stevensites as support for hydrodesulfurization catalysts

M.V. Sychev, R.V. Prihod'ko, A.O. Koriabkina, E.J.M. Hensen, J.A.R. Veen, van, R.A. Santen, van

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Abstract

The stevensite-like materials containing Mg, Mg-Ni, and Mg-Co in the octahedral sheets were synthesized under non-hydrothermal conditions. The nature of divalent octahedral cations influences the surface area and pore volume of these materials. The thiophene HDS activities of stevensite-supported catalysts prepared by addition of Mo or W to the Ni-containing supports, especially to the Ni2+-exchanged stevensite, were superior in relation to those of their counterparts made by conventional co-impregnation of the Mg-stevensite with NiMo and NiW.The use of chelating agents, NTA and EN, affects beneficially the HDS activity of the catalyst which, however, is less obvious in the case of the CoMo catalysts. The positive role of the chelating agents is explained by weakening of the Ni(Co)-support interaction and by a change in the sulfidation sequence of Ni(Co) and Mo(W).The Ni2+- and Co2+-exchanged Mg-stevensite or that isomorphously substituted with these cations are promising candidates for application as supports for hydro-processing catalysts. The thiophene HDS activity of the NiMo and NiW stevensite-supported catalysts is comparable with that of the corresponding gamma-Al2O3 commercial ones
Original languageEnglish
Title of host publicationScientific bases for the preparation of heterogeneous catalysts : proceedings of the 8th international symposium
EditorsE. Gaigneaux
Place of PublicationAmsterdam
PublisherElsevier
Pages257-265
ISBN (Print)0-444-51178-4
DOIs
Publication statusPublished - 2002
Eventconference; International Symposium on Scientific Bases for the Preparation of Heterogeneous Catalysts ; 8 (Louvain-la-Neuve) : 2002.09.09-12; 2002-09-09; 2002-09-12 -
Duration: 9 Sep 200212 Sep 2002

Publication series

NameStudies in Surface Science and Catalysis
Volume143
ISSN (Print)0167-2991

Conference

Conferenceconference; International Symposium on Scientific Bases for the Preparation of Heterogeneous Catalysts ; 8 (Louvain-la-Neuve) : 2002.09.09-12; 2002-09-09; 2002-09-12
Period9/09/0212/09/02
OtherInternational Symposium on Scientific Bases for the Preparation of Heterogeneous Catalysts ; 8 (Louvain-la-Neuve) : 2002.09.09-12

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