Crystalline zeolite composition (ECR-5) having a cancrinite-like structure and process for its preparation

Patent · Tue Jan 05 00:00:00 EST 1988

OSTI ID:5277594

Vaughan, D E

This patent describes a crystalline zeolite, being isostructural to cancrinite, in which the twelve-ring channel has a sorption of greater than about 1% by weight hexane, the crystalline zeolite having a composition, in terms of mole ratios of oxides in the range: 1.0 to 1.3 Na/sub 2/:Al/sub 2/O/sub 3/:2.1 to 8.0 SiO/sub 2/. A process for preparing a crystalline zeolite having a composition, in terms of mole ratios of oxides, in the range: 1.0 to 1.3 Na/sub 2/O:Al/sub 2/O/sub 3/:2.1 to 8.0 SiO/sub 2/ and being isostructural to cancrinite, in which the twelve-ring channel thereof has a sorption of greater than about 1% by weight hexane, comprising the steps of: (a) preparing a reaction mixture comprising aqueous ammonia, a source of silica-alumina, and sodium hyroxide, the reaction mixture having a composition, in terms of mole ratios of oxides, within the following ranges: Na/sub 2/O:Al/sub 2/O/sub 3/:2 to 17; SiO/sub 2/:Al/sub 2/O/sub 3/:2 to 25; H/sub 2/O:Al/sub 2/:30 to 450; (H/sub 2/O + NH/sub 3/):Al/sub 2/O/sub 3/:50 to 600 wherein the ammonia is present in the reaction mixture in an amount of 15 to 30 percent, based on total moles of H/sub 2/O; and (b) maintaining the reaction mixture at a temperature between about 70/sup 0/ and 180/sup 0/C and for a time of about 1 to 10 days.

• Assignee: Exxon Research and Engineering Co., Florham Park, NJ
• Patent Number(s): US 4717560
• OSTI ID: 5277594
• Resource Relation: Patent File Date: Filed date 4 Feb 1985
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ZEOLITES
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
ALUMINIUM OXIDES
AMMONIA
CRYSTAL STRUCTURE
SILICON OXIDES
SODIUM OXIDES
WATER
ALKALI METAL COMPOUNDS
ALUMINIUM COMPOUNDS
CHALCOGENIDES
HYDRIDES
HYDROGEN COMPOUNDS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MINERALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OXIDES
OXYGEN COMPOUNDS
SILICON COMPOUNDS
SODIUM COMPOUNDS
SYNTHESIS
400201* - Chemical & Physicochemical Properties