Patent ID: 8304593

Claim:
A hydrocarbon-conversion process selected from isomerization, reforming, dehydrocyclization, dehydrogenation, disproportionation, transalkylation, dealkylation, polymerization, hydrocracking, and catalytic cracking, which comprises contacting a hydrocarbon feedstock, in a hydrocarbon-conversion zone at hydrocarbon-conversion conditions for isomerization, reforming, dehydrocyclization, dehydrogenation, disproportionation, transalkylation, dealkylation, polymerization, hydrocracking, and catalytic cracking, with a catalytic composition comprising a MgAPSO-31 molecular sieve which contains from about 0.005 to 0.008 mol fraction of magnesium in the microporous crystalline framework structure, demonstrates an XRDI of at least about 0.8, and comprises crystals with a median diameter of no more than about 1.0 micron and a median length along the c-axis of no more than about 3 microns, to obtain a converted product, optionally a platinum-group metal component, and optionally an inorganic-oxide binder.