TY - GEN
T1 - The application of non-hydrothermally prepared stevensites as support for hydrodesulfurization catalysts
AU - Sychev, M.V.
AU - Prihod'ko, R.V.
AU - Koriabkina, A.O.
AU - Hensen, E.J.M.
AU - Veen, van, J.A.R.
AU - Santen, van, R.A.
PY - 2002
Y1 - 2002
N2 - 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
AB - 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
U2 - 10.1016/S0167-2991(00)80664-3
DO - 10.1016/S0167-2991(00)80664-3
M3 - Conference contribution
SN - 0-444-51178-4
T3 - Studies in Surface Science and Catalysis
SP - 257
EP - 265
BT - Scientific bases for the preparation of heterogeneous catalysts : proceedings of the 8th international symposium
A2 - Gaigneaux, E.
PB - Elsevier
CY - Amsterdam
T2 - conference; 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
Y2 - 9 September 2002 through 12 September 2002
ER -