Zobrazeno 1 - 10
of 94
pro vyhledávání: '"B. Didillon"'
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 266:55-64
The reaction mechanisms between Sn-(n-C4H9)4 and several specific types of surface sites on alumina are studied. A surface treatment is described allowing the complete elimination of reactive surface sites and avoiding the anchoring of Sn-(n-C4H9)4 o
Publikováno v:
Applied Catalysis A: General. 283:9-22
A new preparation technique is presented allowing the controlled variation of the average size of platinum particles in small steps of 0.2–0.5 nm in the size range between 1 and 2 nm. The particle growth is achieved by refilling, i.e. by increasing
Publikováno v:
Catalysis Today. 66:303-308
Surface organo-metallic chemistry on metals can be a new route to generate supported bimetallic catalysts. According to previous works on Pt–Sn catalysts, the reaction of tetra n-butyl-tin on the reduced platinum surface leads to well-defined bimet
Publikováno v:
Journal of Catalysis. 198:103-108
The reaction of AsPh3 with Ni/Al2O3 at 100 to 200°C under 6 to 30 bars of hydrogen has been followed by kinetic analysis of both the consumption of AsPh3 and the evolution of benzene and cyclohexane as well as magnetic and XRD measurements of the me
Publikováno v:
Catalysis Today. 65:157-162
The complex [(CH3)4N]3[Pt(SnCl3)5] was selected as a molecular precursor to prepare PtSn/γc-Al2O3 reforming catalysts. The spectroscopic fingerprints of the starting complex were obtained by 195Pt and 119Sn NMR and diffuse reflectance UV–visible s
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 158:91-99
This paper summarizes recently published results on the mechanisms of chloroplatinate adsorption onto alumina, as revealed by the joint use of 195Pt NMR and other spectroscopic techniques. Molecular models of solution species and conceivable adsorbed
Publikováno v:
Journal of Catalysis. 193:154-160
This study treats the synthesis of silica-supported iridium metal particles by several different methods. Iridium trisacetylacetonate was first deposited on silica either by sublimation or by impregnation from a toluene solution. Infrared study showe
Publikováno v:
Journal of Catalysis. 179:459-468
The selective dehydrogenation of isobutane into isobutene was studied on silica-supported bimetallic Pt-Sn. Several bimetallic catalysts were carefully prepared by selective hydrogenolysis of Sn(n-C 4 H 9 ) 4 on Pt. Previous EXAFS studies have shown
Publikováno v:
Applied Catalysis A: General. 164:313-322
Isoprene hydrogenation was investigated on Pd Fe/alumina catalysts in the liquid phase. Iron added by a controlled surface reaction (CSR) promotes the activity of small palladium particles while the opposite effect is generally observed on catalysts
Publikováno v:
Applied Catalysis A: General. 162:171-180
Extended X-ray absorption fine structure (EXAFS) spectroscopy has been used to follow the structural evolution of the monometallic Pt Al 2 O 3 and the bimetallic PtRe Al 2 O 3 systems during reduction and sulfidation treatments. After sulfidation