Shell Oil Comapny

Johannes M Nanne

Martin F Post

Willem H Stork

Gerrit J Den Otter

Michael A Boersma

Willibrord A Van Erp

Jean-Pierre Gilson

Process for isomerizing hydrocarbons at elevated temperature and pressure in the presence of hydrogen by contacting said hydrocarbons with a catalyst comprising zeolite beta and a hydrogenating-dehydrogenating metal and/or a compound of a hydrogenating-dehydrogenating metal, which zeolite beta has been treated with a solution having a pH of at least 9 and which catalyst has been calcined.

Process for isomerizing hydrocarbons

Supported cobalt catalysts with specified inhomogeneous cobalt distribution over the catalyst particles (expressed as a ratio (.SIGMA.V.sub.p /.SIGMA.V.sub.c).ltoreq.0.55 are prepared by immersion of a porous carrier into a solution of a cobalt compound in such a way that a given relation between the viscosity (in cS) and Temperature (degrees K.) of the solution and the immersion time (in sec) is met. For each immersion, this relation is (log v/t.times.T).times.10.sup.4 .gtoreq.1.

Process for preparation of catalyst

A process for the preparation of crystalline iron silicates with certain critical ratios of components in the starting mixture results in silicates having improved catalytic properties in conversion processes.

Process for the preparation of aromatic hydrocarbons using crystalline

An improved process for the preparation of certain crystalline iron silicates particularly suitable for converting acyclic oxygen-containing hydrocarbons into aromatic hydrocarbons wherein use of high silicon content compounds together with certain amines results in silicates having unexpected catalytic stability.

Process for the preparation of crystalline silicates

A Process is disclosed for the preparation of zeolite ferrierite of high purity by hydrothermal crystallization from a starting mixture containing at least one compound selected from piperidine and alkyl-substituted piperidines.

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Amsterdam, Netherlands

Johannes M Nanne