Loading patent…
AssigneeExxon Chemical Patents Inc. (ECPI)
InventorsJohannes Petrus Verduijn, Pieter Ernst Gellings
Estimating the term…
Binderless zeolite L particles are prepared by a method in which particles are formed from silica and from 0 to 95 wt % preformed zeolite L crystallites, and the particles are thereafter reacted with an alkaline solution comprising a source of alumina to convert the silica binder to zeolite L. These particles may comprise cylindrical zeolite L crystallites with a mean diameter of at least 0.05 micron in a zeolite L matrix and may be used as catalyst. Also acyclic hydrocarbons are dehydrocyclized and/or isomerized by contacting them at a temperature of from 370.degree. C. to 600.degree. C. with this catalyst incorporating at least one Group VIII metal having dehydrogenating activity to convert at least part of the acyclic hydrocarbons into aromatic hydrocarbons.
A process for the conversion of a hydrocarbon feed comprising contacting said feed with a catalyst comprising binderless zeolite L particles comprising cylindrical zeolite L crystallites with a mean diameter of at least 0.05 micron in a zeolite L matrix and a catalytically-active metal, said zeolite L particles prepared by first forming particles of a mixture of silica and from 10 to 95 wt % of performed zeolite L crystallites and thereafter reacting said mixture particles with an aqueous alkaline solution containing a source of alumina sufficient to convert the silica to zeolite L, in which the combined composition of the alkaline solution and the silica in the mixture particles is such that the molar ratio of SiO.sub.2 to Al.sub.2 O.sub.3 is in the range of 4-15.
Dependencies are inferred from the claim text.