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Organotemplate‐Free Synthesis of a High‐Silica Zeolite with a TON Structure in the Absence of Zeolite Seeds
Author(s) -
Zhu Chenqi,
Qiu Jing,
Jiang Fan,
Meng Xiangju,
Wang Xiong,
Lei Chi,
Jin Yinying,
Pan Shuxiang,
Xiao FengShou
Publication year - 2016
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201501223
Subject(s) - zeolite , aluminosilicate , chemistry , ton , crystallization , isomerization , catalysis , xylene , selectivity , molecular sieve , chemical engineering , inorganic chemistry , organic chemistry , toluene , fishery , engineering , biology
A high‐silica zeolite with a TON structure designated as ZJM‐4 was successfully synthesized in the absence of any organic templates and zeolite seeds. Many factors such as the SiO 2 /K 2 O ratio, Si/Al ratio, SiO 2 /H 2 O in the starting aluminosilicate gels, crystallization temperature, and crystallization time strongly influence the formation of the ZJM‐4 zeolite. Interestingly, this synthesis shows very efficient silica utilization in the starting gels (>80 %). Catalytic tests on the isomerization of m ‐xylene to p ‐xylene show that the ZJM‐4 catalyst has high selectivity to p ‐xylene (ca. 80 %), which could be potentially important for industrial applications for the ZJM‐4 zeolite as a candidate catalyst in the future.