Title:
PREPARATION METHOD FOR MOLECULAR SIEVE MEMBRANE SUPPORT BODY
Document Type and Number:
WIPO Patent Application WO/2017/107478
Kind Code:
A1
Abstract:
A preparation method for a molecular sieve membrane support body; according to the molar ratio of magnesium, aluminium and silicon in cordierite, a nano-composite sol prepared from magnesium, aluminium, silicon, and a lanthanum sintering aid using a sol-gel method is wrapped and adhered to a dispersed micron-grade cordierite powder surface; the sol is converted into a nano-composite oxide by means of pre-sintering, and the powder is mixed with a binder and water into a mud material, extruded, and sintered into a cordierite support body; a thin film of zirconium oxide aqueous dispersion is coated onto the outside of the cordierite support body and sintered in order to obtain a molecular sieve membrane support body composed of a cordierite main support layer and a zirconium oxide thin film layer. The present method prepares a double-layer composite support body, and the base layer thin film of the support body on which the molecular sieve grows having smaller and more uniform pores and higher porosity, such that the molecular sieve membrane grown on said thin film is more uniform, and has a shorter growth period and no defects.
Inventors:
MENG FANPENG (CN)
FAN ZHENKUN (CN)
ZHANG JIAN (CN)
ZHANG CHAO (CN)
FAN ZHENKUN (CN)
ZHANG JIAN (CN)
ZHANG CHAO (CN)
Application Number:
PCT/CN2016/091005
Publication Date:
June 29, 2017
Filing Date:
July 22, 2016
Export Citation:
Assignee:
SHANDONG GUIYUAN ADVANCED CERAM CO LTD (CN)
International Classes:
C04B35/195; C04B35/628; C04B35/64; C04B38/00
Foreign References:
| CN104987120A | 2015-10-21 | |||
| CN102861516A | 2013-01-09 | |||
| EP0700718A1 | 1996-03-13 | |||
| CN105622079A | 2016-06-01 |
Attorney, Agent or Firm:
QINGDAO FIRST PATENT&TRADEMARK AGENT CO., LTD. (CN)
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