Composites of microporous aluminum phosphates and zeolites and conversions over these catalysts

Patent · Tue Feb 09 04:00:00 EST 1988

OSTI ID:5408798

Kirker, G W; Landis, M E; Yen, J H

A process for dewaxing a hydrocarbon feedstock is described comprising contacting the feedstock under sufficient dewaxing conditions with a catalyst composition comprising (i) a catalytically active crystalline silicate and (ii) a crystalline aluminum phosphate, wherein the crystalline silicate is an aluminosilicate zeolite having a silica to alumina mole ratio of from about 2 to about 500, and wherein the aluminum phosphate has a microporous framework structure in which the pores are uniform and have nominal diameters within the range of about 3 to 10 Angstroms. The aluminum phosphate has an intracrystalline adsorption capacity for water at 4.6 torr and 24/sup 0/C of at least 3.5 weight percent. The adsorption and desorption of water in the aluminum phosphate is completely reversible while retaining the same essential phosphate framework topology in both the hydrated and dehydrated state.

• Assignee: Mobil Oil Corp., New York, NY
• Patent Number(s): US 4724066
• OSTI ID: 5408798
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALUMINIUM COMPOUNDS
ALUMINIUM PHOSPHATES
ALUMINIUM SILICATES
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL COMPOSITION
COMPOSITE MATERIALS
CRYSTAL STRUCTURE
DEWAXING
ELEMENTS
HYDROGEN
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MICROSTRUCTURE
MINERALS
NONMETALS
OXYGEN COMPOUNDS
PETROLEUM PRODUCTS
PHOSPHATES
PHOSPHORUS COMPOUNDS
POROSITY
SEPARATION PROCESSES
SILICATES
SILICON COMPOUNDS
SORPTIVE PROPERTIES
SURFACE PROPERTIES
ZEOLITES