Manufacture of gasoline
AssigneeMobil Oil Corporation
InventorsClarence D. Chang, William H. Lang, Anthony J. Silvestri
Life of this patent
Estimating the term…
Abstract
Reacting mixtures of difficultly convertible aliphatic organic oxygenate compounds, such as short chain aldehydes, carboxylic acids or carbohydrates with easily convertible aliphatic alcohols, ethers, acetals and analogs thereof over a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12 and a constraint index of about 1 to 12, at elevated temperatures, 0.5 to 50 LHSV and 1 to 200 atmospheres to produce a product comprising water, full range highly aromatic hydrocarbon gasoline and light aliphatic hydrocarbon gases having an improved production of C.sub.6 and C.sub.10 monocyclic aromatic hydrocarbons.
Claims8
In the process of converting lower aliphatic oxygen containing organic compounds of the empirical formula C.sub.n H.sub.m-2p.pH.sub.2 O where n is the number of carbon atoms, 1 to 8, p is the number of oxygen atoms and m is the number of hydrogen atoms in the feed, to a product comprising water and hydrocarbons, said hydrocarbons containing a preponderance of the carbon of said organic compounds, by contacting such feed with a crystalline aluminosilicate zeolite catalyst having a silica to alumina ratio of at least about 12 and a constraint index of about 1 to 12 at an elevated temperature of at least about 500.degree. F, and a space velocity of about 0.5 to 50 LHSV;
- the improvement, whereby increasing the aromaticity of said hydrocarbon product, which comprises providing as said feed a mixture of a difficultly convertible organic compound having a value of ##EQU3## of up to 1 and an easily convertible organic compound having no carboxylic acid groups and having a value of R of greater than 1, said mixture having a cumulative value of R of greater than 1 and a stoichiometric deficiency of carboxylic acid groups.
Dependencies are inferred from the claim text.