Patent ID: 7432406
Filing Date: 2008-10-07
Classification: B01J,C07C

Abstract:
1. A process for dehydrogenating a hydrocarbon feedstream comprising contacting the feedstream at dehydrogenation conditions with a dehydrogenation catalyst, to give a dehydrogenation product, the catalyst comprising a noble metal dispersed on a non-acidic molecular sieve having a three-dimensional microporous framework structure of tin, aluminum and silicon tetrahedral oxide units and which has a unit empirical formula on an anhydrous basis of: where “A” is at least one exchangeable cation, “m” is the mole fraction of A and varies from about 0.01 to about 0.49, “w” is the mole fraction of Sn and varies from about 0.01 to about 0.49, “x” is the mole fraction of Al and varies from about 0.01 to about 0.49 and “y” is the mole fraction of Si and varies from about 0.50 to about 0.98, the molecular sieve characterized in that it has the crystal structure selected from zeolite-L, faujasite, zeolite X, zeolite Y, zeolite beta, ferrierite, MFI and erionite and where at least 10% of the Sn is in a reduced oxidation state.