Zobrazeno 1 - 3
of 3
pro vyhledávání: '"Driss Ouafi"'
Autor:
Mahjoub Lakhdar, Amar Mennour, J.C. Duchet, J. Bachelier, Driss Ouafi, Jean-Claude Lavalley, Saïd Housni, Daniel Cornet
Publikováno v:
Catalysis Today. 4:71-96
Carbon monoxide and oxygen chemisorption was used to investigate the nature and number of surface sites present over sulphided Ni-W/Al2O3 catalysts with compositions varying over a wide range (0–36% WO3; 0–8% NiO). The gas uptakes were measured b
Publikováno v:
Reaction Kinetics and Catalysis Letters. 38:95-101
IR spectroscopy has been used to follow the transformation at different temperatures of piperidine chemisorbed on oxidic or sulfided Ni−W/Al2O3 catalysts. Formation of an intermediate species, possibly tetrahydropyridine, and pyridine is evidenced.
Autor:
Claudine Aubert, Driss Ouafi, J. Grimblot, Daniel Cornet, J.C. Duchet, Claude Moreau, Mohammed Houari, J. P. Bonnelle, Patrick Geneste, J. Bachelier, Jean-Claude Lavalley
Publikováno v:
Catalysis Today. 4:97-116
A series of catalysts containing tungsten and nickel on a γ-alumina carrier were examined with respect to surface acidity. The studies focused on the behaviour of sulphided samples to which various techniques were applied. In agreement with prior st