Title:
PREPARATION OF IMPROVED ZEOLITE L
Document Type and Number:
Japanese Patent JP2527927
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain zeolite L crystallite having low alkalinity and high crystallinity by adding a certain amount of metal to a synthetic gel in the preparation of pilaster zeolite L for heating an alkaline reacting mixture containing water, an alkali metal source, a silicon source and an Al source.
SOLUTION: A reacting mixture is prepared which has a composition comprising water, an alkali metal source, a silicon source, an Al source and an additional metal M11 source by the mole ratio (as an oxide) of (M12+M112/nO)/SiO2: 0.18 to 0.36, H2O(M12+M112/nO): 25 to 90, Si2O3/Al2O3: 5 to 15, M12O/(M12+ M112/nO): 0.900 to 0.9999. The reacting mixture is heated to 75°C or above, preferably to 100 to 250°C, more preferably to 120 to 225°C. In the formulas, M1 is alkali metal, M11 is cation of Mg, Ca, Ba, Mn, Cr, Co, Ni or Zn and n is atomic valence of M11.
Inventors:
Verduijn, Johannes P.
Application Number:
JP17862295A
Publication Date:
August 28, 1996
Filing Date:
July 14, 1995
Export Citation:
Assignee:
EXXON CHEM PATENTS INC
International Classes:
B01J29/00; B01J29/50; B01J29/54; B01J29/60; B01J29/62; C01B39/06; C01B39/32; C07B61/00; C07C1/00; C07C5/22; C07C5/41; C07C15/00; C07C15/04; C07C67/00; C10G35/095; (IPC1-7): C01B39/32; B01J29/60; C07C5/41; C07C15/04; C10G35/095