Title:
METHOD FOR PRODUCING DDR ZEOLITE
Document Type and Number:
WIPO Patent Application WO/2011/046016
Kind Code:
A1
Abstract:
Disclosed is a method for producing a DDR zeolite, which can be carried out using materials that are less harmful to the environment. The method for producing a DDR zeolite has a short hydrothermal synthesis time and does not require constant stirring of the starting material solution. Specifically disclosed is a method for producing a DDR zeolite, which comprises: a starting material solution preparation step in which a starting material solution that contains 1-adamantaneamine, silica (SiO2) and water at a molar ratio 1-adamantaneamine/SiO2 of 0.002-0.5 and a molar ratio water/SiO2 of 10-500 but does not contain ethylenediamine is prepared; and a crystal growth step in which hydrothermal synthesis is carried out while having the raw material solution and a DDR zeolite powder in contact with each other, so that crystals of DDR zeolite are grown using the DDR zeolite powder as a seed crystal.
Inventors:
UCHIKAWA TETSUYA (JP)
NIINO MAKIKO (JP)
NIINO MAKIKO (JP)
Application Number:
PCT/JP2010/066778
Publication Date:
April 21, 2011
Filing Date:
September 28, 2010
Export Citation:
Assignee:
NGK INSULATORS LTD (JP)
UCHIKAWA TETSUYA (JP)
NIINO MAKIKO (JP)
UCHIKAWA TETSUYA (JP)
NIINO MAKIKO (JP)
International Classes:
C01B39/48; C01B37/02
Domestic Patent References:
| WO2007105407A1 | 2007-09-20 |
Foreign References:
| JP2004083375A | 2004-03-18 | |||
| JP2008018387A | 2008-01-31 | |||
| JP2004083375A | 2004-03-18 | |||
| JP2005067991A | 2005-03-17 |
Other References:
See also references of EP 2489636A4
Attorney, Agent or Firm:
WATANABE, Kazuhira (JP)
Ippei Watanabe (JP)
Ippei Watanabe (JP)
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