Production of light olefins from aliphatic hetero compounds

Patent · Tue Jun 30 04:00:00 EDT 1987

OSTI ID:6335730

Kaiser, S W

The process of making light olefins is described containing 2 to 4 carbons atoms comprises contacting a feedstock with one or more aliphatic hetero compounds with a silicoaluminophosphate molecular sieve comprising a molecular framework of (AlO/sub 2/), (PO/sub 2/) and (SiO/sub 2/) tetrahedral unit. At effective process, conditions to produce the light olefins are comprised. The silicoaluminophosphate molecular sieve comprises a microporous crystalline silicoaluminophosphate whose unit empirical formula in the as-synthesized and anhydrous form. mR: (Si/sub x/Al/sub y/P/sub z/)O/sub 2/ ''R'' represents at least one organic templating agent present in the intracrystalline pore system; ''m'' has a value of from 0.02 to 0.3; ''m'' represents the moles of ''R'' present per mole of (Si/sub x/Al/sub y/P/sub z/)O/sub 2/; ''x'', ''y'' and ''z'' represent the mole fractions of silicon, aluminum and phosphorus respectively, present as tetrahedral units. The mole fractions are within the pentagonal compositional are defined by points, A, B, C, D and E of the ternary diagram.

• Assignee: Union Carbide Corp., Danbury, CT
• Patent Number(s): US 4677243
• OSTI ID: 6335730
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ADSORBENTS
ALKENES
ALUMINIUM COMPOUNDS
ALUMINIUM PHOSPHATES
CARBON
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
CRYSTAL STRUCTURE
ELEMENTS
HYDROCARBONS
KINETICS
MOLECULAR SIEVES
NONMETALS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
QUANTITY RATIO
REACTION KINETICS
SILICON COMPOUNDS
SILICON PHOSPHATES
SYNTHESIS