Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
DEPOSITION PROCESS
Document Type and Number:
Japanese Patent JPH0543219
Kind Code:
A
Abstract:

PURPOSE: To reinforce the growth of crystals by treating the surface of a porous metal support with acid, afterwards, impregnating it in a synthetic gel and crystallizing a zeo-type material on the support.

CONSTITUTION: The porous metal support of the stainless steel or the like having an average pore diameter of 0.1 to 200 μm is impregnated in an organic solvent, degreased, afterwards, impregnated in an aquous solution having the concentration of acid such as hydrochloric acid of 0.01 to 5 mol over a period of 1 to 24 hours, next washed and dried. Besides, an NaAlO2 aqueous solution is added to an Na2SiO3 aqueous solution, mixed and crystallized and a hydrogel forming the crystalline zeo-type material is adjusted. Next, the cleaned porous metal support is impregnated in the adjusted hydrogel and left while heating and after the zeo-type material is crystallized on the support, the support is taken out, sufficiently washed and dried. Afterwards, the process for impregnation in the hydrogel, crystallization, following washing and drying is repeated again more than twice and a filter coated with the crystal membrane of the zeo-type material having prescribed thickness is provided.


Inventors:
SAMI ARI IBURAHIMU BARI
GURAHAMU JIYON BURATSUTON
CHIMOSHII DO BIRIAAZU NEIRAA
JIEREMII DEIBITSUDO TOMUKINSUN
Application Number:
JP29765891A
Publication Date:
February 23, 1993
Filing Date:
October 18, 1991
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
BRITISH PETROLEUM CO
International Classes:
B01D71/02; B01J29/04; B01J29/06; C01B39/00; C01B39/02; C01B39/06; (IPC1-7): B01D71/02; B01J29/06; C01B33/34
Attorney, Agent or Firm:
Haruo Hamada



 
Next Patent: DEPOSITION PROCESS