CHA-TYPE ZEOLITE AND PRODUCTION METHOD THEREFOR
Provided is a highly crystalline CHA-type zeolite more suitable as a catalyst or a catalyst support than an existing CHA-type zeolite, in particular, an existing CHA-type zeolite obtained by using an ADA salt alone as an organic structure-directing agent. The CHA-type zeolite has a molar ratio of si...
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Zusammenfassung: | Provided is a highly crystalline CHA-type zeolite more suitable as a catalyst or a catalyst support than an existing CHA-type zeolite, in particular, an existing CHA-type zeolite obtained by using an ADA salt alone as an organic structure-directing agent. The CHA-type zeolite has a molar ratio of silica to alumina of 10.0 or more and less than 20.0 and a molar ratio of silanol groups to silicon of 0.15 ? 10?? or more and 0.50 ? 10?? or less, a molar ratio of silica to alumina of 20.0 or more and 35.0 or less and a molar ratio of silanol groups to silicon of 0.15 ? 10?? or more and 1.10 ? 10?? or less, a molar ratio of silica to alumina of more than 35.0 and 45.0 or less and a molar ratio of silanol groups to silicon of 0.15 ? 10?? or more and 1.65 ? 10?? or less, or a molar ratio of silica to alumina of more than 45.0 and 55.0 or less and a molar ratio of silanol groups to silicon of 0.15 ? 10?? or more and 1.80 ? 10?? or less. |
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