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Title:
METHOD FOR PRODUCING CHA-TYPE ZEOLITE HAVING HIGH Si/Al RATIO
Document Type and Number:
Japanese Patent JP2016169118
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method capable of producing a CHA-type zeolite having an Si/Al ratio of 110 or more, especially 140 or more without depending on a fluoride method since CHA-type zeolite crystals having a Si/Al ratio of 110 or more have not been conventionally produced by a method other than a fluoride method.SOLUTION: There is provided a method capable of producing a CHA-type zeolite having an Si/Al ratio of 110 or more which comprises subjecting a raw material mixture to hydrothermal treatment under conditions at a temperature of 140 to 200°C, wherein the raw material mixture has an Si/Al ratio of 200 or more and contains 0.1 to 5 wt.% of a CHA-type zeolite having an Si/Al ratio of 80 or more as seed crystals based on the silica source (in terms of SiO).SELECTED DRAWING: None

Inventors:
KUBOTA YOSHIHIRO
INAGAKI SATOSHI
FUKUOKA TAKUYA
Application Number:
JP2015049109A
Publication Date:
September 23, 2016
Filing Date:
March 12, 2015
Export Citation:
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Assignee:
NAT UNIV YOKOHAMA
International Classes:
C01B39/48; B01D53/94; B01J29/70; B01J32/00
Domestic Patent References:
JP2005520763A2005-07-14
Foreign References:
WO2006057760A12006-06-01
Attorney, Agent or Firm:
Akira Shimoda
Kenichiro Akao
Kazuhiko Kurihara