Title:
PROCESS FOR THE PRODUCTION OF DDR-TYPE ZEOLITE MEMBRANES
Document Type and Number:
WIPO Patent Application WO/2010/101035
Kind Code:
A1
Abstract:
A process for the production of DDR-type zeolite membranes, which comprises: both a seed-crystal-forming step of immersing a porous substrate in a seed-crystal-forming raw material solution which contains a DDR-type zeolite powder dispersed therein, and subjecting the resulting system to hydrothermal synthesis to form multiple DDR-type zeolite crystal particles on the surface of the porous substrate; and a membrane-forming step of immersing the resulting porous substrate with DDR-type zeolite crystal particles on the surface in a membrane-forming raw material solution which is free from DDR-type zeolite powder, and subjecting the resulting system to hydrothermal synthesis to form a DDR-type zeolite membrane on the surface of the porous substrate. According to the process, dense DDR-type zeolite membranes can be formed, and the vessel used in the synthesis can be prevented from being damaged.
Inventors:
NIINO, Makiko (2-56, Suda-cho, Mizuho-ku, Nagoya-sh, Aichi 30, 〒4678530, JP)
新野 真紀子 (〒30 愛知県名古屋市瑞穂区須田町２番５６号 日本碍子株式会社内 Aichi, 〒4678530, JP)
新野 真紀子 (〒30 愛知県名古屋市瑞穂区須田町２番５６号 日本碍子株式会社内 Aichi, 〒4678530, JP)
Application Number:
JP2010/052578
Publication Date:
September 10, 2010
Filing Date:
February 15, 2010
Export Citation:
Assignee:
NGK INSULATORS, LTD. (2-56, Suda-cho Mizuho-ku, Nagoya-sh, Aichi 30, 〒4678530, JP)
日本碍子株式会社 (〒30 愛知県名古屋市瑞穂区須田町２番５６号 Aichi, 〒4678530, JP)
NIINO, Makiko (2-56, Suda-cho, Mizuho-ku, Nagoya-sh, Aichi 30, 〒4678530, JP)
日本碍子株式会社 (〒30 愛知県名古屋市瑞穂区須田町２番５６号 Aichi, 〒4678530, JP)
NIINO, Makiko (2-56, Suda-cho, Mizuho-ku, Nagoya-sh, Aichi 30, 〒4678530, JP)
International Classes:
C01B37/02; B01D69/10; B01D69/12; B01D71/02; C01B39/48
Attorney, Agent or Firm:
WATANABE, Kazuhira (3rd Fl, No.8 Kikuboshi Tower Building20-18, Asakusabashi 3-chom, Taito-ku Tokyo 53, 〒1110053, JP)
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