Title:
ZEOLITE MEMBRANE, PRODUCTION METHOD THEREFOR, AND SEPARATION METHOD USING SAME
Document Type and Number:
WIPO Patent Application WO/2016/006564
Kind Code:
A1
Abstract:
[Problem] To provide a zeolite membrane that not only achieves separation performance and throughput which are sufficiently high for practical use in separation by a zeolite separation membrane, but that also makes it possible to stably maintain separation performance over a long period of time. [Solution] A zeolite membrane in which the Si/Al ratio (molar ratio) of CHA-type zeolite particles is 9.5 to 100.5 and, in an X-ray diffraction pattern obtained by irradiating the zeolite membrane surface with X-rays, the peak intensity in the vicinity of 2θ = 18° is less than 0.5 times the peak intensity in the vicinity of 2θ = 21° and/or the peak intensity in the vicinity of 2θ = 10° is less than 4 times the peak intensity in the vicinity of 2θ = 21°. When using an aqueous reaction mixture containing a source of elemental Si, a source of elemental Al, an alkali source, and an organic template to form a zeolite membrane having a CHA-type crystal structure on an intermediate layer of a porous support body by hydrothermal synthesis, an FAU-type zeolite that has not been subjected to dealumination is used as the source of elemental Si and the source of elemental Al.
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Inventors:
IMASAKA SATOSHI (JP)
ITAKURA MASAYA (JP)
HASEGAWA YASUHISA (JP)
SATO KOICHI (JP)
ITAKURA MASAYA (JP)
HASEGAWA YASUHISA (JP)
SATO KOICHI (JP)
Application Number:
PCT/JP2015/069394
Publication Date:
January 14, 2016
Filing Date:
July 06, 2015
Export Citation:
Assignee:
HITACHI SHIPBUILDING ENG CO (JP)
NAT INST OF ADVANCED IND SCIEN (JP)
NAT INST OF ADVANCED IND SCIEN (JP)
International Classes:
B01D69/10; B01D69/12; B01D71/02; C01B39/48
Domestic Patent References:
| WO2013125660A1 | 2013-08-29 | |||
| WO2012046545A1 | 2012-04-12 | |||
| WO2010098473A1 | 2010-09-02 |
Foreign References:
| JP2012050930A | 2012-03-15 | |||
| JP2010532259A | 2010-10-07 |
Other References:
HASEGAWA, YASUHISA ET AL.: "Preparation of High-Silica Chabazite Membrane", MEMBRANE, vol. 39, no. 1, pages 56 - 60, XP008183720
ITAKURA, MASAYA ET AL.: "Synthesis of high- silica CHA type zeolite by interzeolite conversion of FAU type zeolite in the presence of seed crystals", MICROPOROUS AND MESOPOROUS MATERIALS, vol. 144, 24 March 2011 (2011-03-24), pages 91 - 96, XP028100122, DOI: doi:10.1016/j.micromeso.2011.03.041
See also references of EP 3167953A4
ITAKURA, MASAYA ET AL.: "Synthesis of high- silica CHA type zeolite by interzeolite conversion of FAU type zeolite in the presence of seed crystals", MICROPOROUS AND MESOPOROUS MATERIALS, vol. 144, 24 March 2011 (2011-03-24), pages 91 - 96, XP028100122, DOI: doi:10.1016/j.micromeso.2011.03.041
See also references of EP 3167953A4
Attorney, Agent or Firm:
WATANABE, Akira et al. (JP)
Akira Watanabe (JP)
Akira Watanabe (JP)
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