Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Patent
1992-01-31
1994-02-22
Myers, Helane
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
208 46, 502 79, C10G 4720
Patent
active
052883965
ABSTRACT:
A hydrocarbon conversion catalyst useful for converting hydrocarbon feeds to midbarrel products is prepared by extruding a mixture of an inorganic refractory oxide component and a crystalline aluminosilicate zeolite having cracking activity to form extrudates which are broken into particles normally ranging in length between 1/16 and 1/2 inch. The extruded particles are then calcined in the presence of steam at a water vapor partial pressure greater than about 2.0 p.s.i.a., preferably greater than about 5.0 p.s.i.a. The calcination step is carried out in the presence of sufficient steam for a sufficient amount of time at a sufficient temperature to convert the crystalline aluminosilicate zeolite in the extrudates into an ultrahydrophobic zeolite having a unit cell size between about 24.20 and about 24.45 Angstroms and a sorptive capacity for water vapor less than about 5 weight percent of the zeolite at 25.degree. C. and a p/p.degree. value of 0.10.
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Finkle Yale S.
Myers Helane
Union Oil Company of California
Wirzbicki Gregory F.
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