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Synthesis of New Microporous Zincosilicates with CHA Zeolite Topology as Efficient Platforms for Ion‐Exchange of Divalent Cations
Author(s) -
Koike Natsume,
Iyoki Kenta,
Keoh Sye Hoe,
Chaikittisilp Watcharop,
Okubo Tatsuya
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201705277
Subject(s) - microporous material , zeolite , aluminosilicate , divalent , inorganic chemistry , chemistry , catalysis , ion exchange , heteroatom , calcination , topology (electrical circuits) , precipitation , chemical engineering , ion , combinatorial chemistry , organic chemistry , ring (chemistry) , physics , mathematics , combinatorics , meteorology , engineering
There is growing interest to develop zeolite materials capable of stabilizing divalent cations such as Cu 2+ , Fe 2+ , and Ni 2+ for catalytic applications. Herein the synthesis of a new microporous zincosilicate with CHA zeolite topology is reported for the first time, by particularly focusing on the mixing procedures of the raw materials to prevent the precipitation of zinc oxides/hydroxides and the formation of impurity phases. The obtained zincosilicate CHA products possess remarkably higher ion‐exchange ability for catalytically useful, divalent cations, demonstrated here using Ni 2+ as an example, compared to that of aluminosilicate and zincoaluminosilicate analogs. It is anticipated that these zincosilicate CHA materials can be an efficient platform for several important catalytic reactions. In addition, the present finding would provide a general guideline for effective substitution of other heteroatoms into the zeolite frameworks.