Patent · US Expired

Process for preparing a zeolite of the L type using organic templates

US4554146A · kind A · utility

16Cited by
16References
15Claims
0Family size

Assignee

Inventor

Key dates

Filing dateNov 10, 1983
Grant dateNov 19, 1985
Priority date—
Expiry dateNov 10, 2003

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10S423/28
  • WIPO fieldMaterials, metallurgy
  • WIPO sectorChemistry

Abstract

A zeolite of the L type is prepared by crystallization from a reaction mixture aged at 70.degree. to 260.degree. C. containing water, a source of silica or germania, a source of alumina or gallia, a source of potassium (and optionally up to 40 mole percent of a source of sodium, based on total mole percent of potassium and sodium), and a salt of a tetraalkylammonium cation wherein at least two alkyl groups have more than one carbon atom. Most preferably the cation is tetraethylammonium cation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.