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AssigneeMobil Oil Corporation
InventorFrancis G. Dwyer
Estimating the term…
A new zeolite, designated ZSM-22, is disclosed and claimed. The new zeolite has the composition, in the anhydrous state, expressed in terms of mole ratios of oxides as follows: (x)Q.sub.2 O:(y)M.sub.2/n O:(z)L.sub.2 O.sub.3 :100SiO.sub.2 wherein Q.sub.2 O is the oxide form of an organic compound containing an element of Group 5-B (as defined in the Table of the Elements--National Bureau of Standards, Fischer Scientific Co. Catalog No. 5-702-10), e.g., N or P, preferably N, containing at least one alkyl or aryl group having at least 2 carbon atoms, M is an alkali or alkaline earth metal having a valence n, e.g., Na, K, Cs or Li and wherein x=0.01-2.0, y=0-2.0, z=0-5, and L=Al. The new zeolite, ZSM-22, can be used in catalytic dewaxing of petroleum stocks in the presence or absence of added hydrogen.
A process for catalytic dewaxing of petroleum stocks comprising contacting the petroleum stocks, in the presence or absence of added hydrogen, with a ZSM-22 zeolite catalyst under conditions including a temperatue of about 300-1000.degree. F., a pressure of 0-2000 psig, a liquid hourly space velocity of 0.1 to 10 and a hydrogen to hydrocarbon ratio of about 0 to 25:1.
A process for catalytic dewaxing of a lube stock comprising contacting the lube stock, in the presence of added hydrogen, with a ZSM-22 zeolite catalyt under conditions including a temperature of between about 500.degree. F. and about 675.degree. F., a pressure of between about 100 and about 3000 psig, a liquid hourly space velocity between about 0.1 and about 10 and a hydrogen to feed ratio of from about 400 to about 8000 standard cubic feed of hydrogen per barrel of feed.
Dependencies are inferred from the claim text.