Other

Shell Oil Comapny

Jean-Claude Clement

Emmanuel E Neel

Georges L Sturtz

Michel Deflin

Jean-Paul Darnanville

Pierre E Dejaifve

Roland A Garin

Jean-Pierre Anquetil

Jean-Claude Lambert

Jacques Vanrenterghem

Dehydrogenation catalyst, wherein the molar ratio between iron oxide providing agent and potassium oxide providing agent calculated as iron: potassium atomic ratio is in the range of from 1.5 to 60, a K.sub.2 Fe.sub.12 O.sub.19 phase is present in an octahedral Fe.sub.3 O.sub.4 matrix, showing crystalline epitaxy between the hexagonal structure of K.sub.2 Fe.sub.12 O.sub.19 and the (111) planes of the Fe.sub.3 O.sub.4 spinel structure, and showing intense X-ray diffraction peaks in the area of from d=12.4 .ANG. to d=1.60 .ANG.. Process for the preparation of such catalyst and process for dehydrogenation of optionally substituted alkanes into olefins.

Catalyst for dehydrogenating organic compounds, a process for its

Spinels promoted with an alkali metal oxide and vanadium, oxide are useful catalysts for the dehydrogenation of hydrocarbons to the corresponding more unsaturated hydrocarbons and result in an improved catalyst.

Spinel dehydrogenation catalyst

This invention concerns the preparation of dinitrile phosphonates, as well as their hydrolysis into the corresponding diacids, and reduction into the corresponding diamines. These compounds can be used, in particular, to make polyamides, polyurethanes or polyurates fireproof, as well as to increase their adhesive properties.

3-(1,6-)Diaminohexyl-diloweralkyl) Phosphonates

Nylon polycondensate from diamino phosphonate

Catalyst compositions and an improved process for converting carbon monoxide and water to hydrogen and CO.sub.2 are disclosed.

Process of the preparation of a hydrogen-rich gas and the catalyst used

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Grande Couronne, France

Jean-Claude Clement