Patent
Process and catalyst for dehydrogenation of organic compounds
TLDR
In this paper, the authors proposed a new catalyst composed of reduced and sulfided nickel crystallites on siliceous supports which have been treated with chromium compounds and oxidized to provide surface-anchored chromyl species.Abstract:
Alkanes are dehydrogenated by passage through alternating dehydrogenation zones and selective oxidation zone(s), in which latter zone(s) hydrogen produced in the preceding endothermic dehydrogenation reaction is selectively oxidized to generate heat for the succeeding dehydrogenation reaction. New catalyst compositions are prepared comprising reduced and sulfided nickel crystallites on siliceous supports which have been treated with chromium compounds and oxidized to provide surface-anchored chromyl species. Also new catalyst compositions are prepared by sulfiding nickel-containing compositions with carbonaceous sulfur compounds such as dialkylsulfoxides. Another embodiment of the invention is catalyst and dehydrogenation therewith, in which pores having radius of 50 to 200 Angstroms occupy pore volume from 0.30 to 1.50 ml per gram of the support, and pores having radius of 20 to 50 Angstroms occupy pore volume less than 0.1 ml per gram of the support. In another embodiment, alkanes are dehydrogenated using as catalyst a metal or metal compound having dehydrogenating activity supported on alkali-treated alumina.read more
Citations
More filters
Patent
Internal combustion engine utilizing hydrogen
TL;DR: In this article, a system that is capable of freely selecting one or two or more types of fuel and supplying the selected types to an internal combustion engine is described. But this system is limited to a single type of fuel: hydrogen-rich gas and dehydrogenated product.
Patent
Process for the catalytic dehydrogenation of alkanes to alkenes with simultaneous combustion of hydrogen
Pradyot Adwaitanand Agaskar,Robert K. Grasselli,James N. Michaels,Paul Thomas Reischman,David L. Stern,John G. Tsikoyiannis +5 more
TL;DR: In this article, a net catalytic oxidative dehydrogenation of alkanes to produce alkenes is described, which involves simultaneous equilibrium de-hydrogenation and combustion of the hydrogen formed.
Patent
Ni catalysts and methods for alkane dehydrogenation
TL;DR: In this paper, the catalysts and methods for alkane oxydehydrogenation are disclosed, and a supported catalyst is used to select the alkane from a group consisting of ethane, propane, isobutane, n-butane, and ethyl chloride.
Patent
An oil and polar additive impregnated composition useful in the catalytic hydroprocessing of hydrocarbons, a method of making such catalyst, and a process of using such catalyst
TL;DR: In this paper, a support material consisting of a metal component and impregnated with both hydrocarbon oil and a polar additive is used in the hydrotreating of hydrocarbon feedstocks.
Patent
Catalytic oxidative dehydrogenation process and catalyst
TL;DR: A process for the production of a mono-olefinearfin from a gaseous paraffinic hydrocarbon having at least two carbon atoms or mixtures thereof comprising reacting said hydrocarbons and molecular oxygen in the presence of a platinum catalyst is described in this article.
References
More filters
Journal ArticleDOI
Catalytic hydrogenolysis and dehydrogenation over copper-nickel alloys
TL;DR: In this article, the effect of adding copper to nickel was investigated for the hydrogenolysis of ethane to methane and the dehydrogenation of cyclohexane to benzene over a series of copper-nickel alloys.
Journal ArticleDOI
Chemistry of nickel-alumina catalysts
TL;DR: In this paper, a study of the chemistry involved in preparation, pretreatment, and reduction of Ni Al 2 O 3 catalysts was carried out using hydrogen chemisorption, thermal gravimetric analysis, and chromatographic analysis.
Journal ArticleDOI
Determination of reducibility and identification of alloying in copper-nickel-on-silica catalysts by temperature-programmed reduction
TL;DR: In this paper, the reduction characteristics of various copper, nickel, and copper-nickel-on-silica catalysts have been examined using a temperature-programmed technique, which involves a continuous and quantitative monitoring of the hydrogen uptake due to the reduction of a particular species on the catalyst surface.
Journal ArticleDOI
Hydrogenolysis of C2H6, C3H8 and n-C4H10 over silica-supported nickel-copper catalysts
J.A. Dalmon,G.A. Martin +1 more
TL;DR: In this paper, the authors measured the rates of C2H6, C3H8, and n-C4H10 hydrogenolysis on homogeneous, SiO2-supported NiCu alloys for which surface and bulk compositions were shown to be very similar.
Journal ArticleDOI
The activation of the phillips polymerization catalyst: I. Influence of the hydroxyl population
Max P. McDaniel,M.B. Welch +1 more
TL;DR: In this paper, the authors studied the thermal activation of Cr/silica and Cr/ silica-titania polymerization catalysts and found that both the activity and molecular weight of the polyethylene formed depended on the activation temperature, suggesting a connection with the surface hydroxyl population surrounding each active center.