Synthesis of transition metal-doped ETS-10 zeolite: Effect of the metal addition on the crystallization and morphology and their catalytic application for organic transformation
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引用次数: 0
Abstract
The crystallinity and morphology of the zeolites have a significant effect on their catalytic performance. Herein, the influence of the introduced metal and copolymer in the synthesis gel on the crystallinity and morphology of the synthesized M-ETS-10 (M=Fe, Co, Ni, Cu) zeolites and on their catalytic activity were investigated. The crystallinity (110%) of the M-ETS-10 (M=Fe, Co, Ni, Cu) was enhanced; the morphology of Fe(or Co)-ETS-10 was changed to imperfect tetragonal bipyramidal shapes, and Ni(or Cu)-ETS-10 turned into irregular large particles consisted of defective tetragonal bipyramidal. Incorporating copolymer into the gel contributed to all the hierarchical M-ETS-10-H being present multi-layered structure consisted of nanosheets. The hierarchical Cu-ETS-10-H exhibited superior catalytic activity than M-ETS-10-H and Cu-ETS-10 in the C–C bond cleavage and decarboxylative hydrosulfonylation reactions. This was attributed to the presence of Lewis basic sites, reversible transformation of Cu2+ to Cu+, as well as the hierarchical pore structure.
期刊介绍:
Applied Catalysis A: General publishes original papers on all aspects of catalysis of basic and practical interest to chemical scientists in both industrial and academic fields, with an emphasis onnew understanding of catalysts and catalytic reactions, new catalytic materials, new techniques, and new processes, especially those that have potential practical implications.
Papers that report results of a thorough study or optimization of systems or processes that are well understood, widely studied, or minor variations of known ones are discouraged. Authors should include statements in a separate section "Justification for Publication" of how the manuscript fits the scope of the journal in the cover letter to the editors. Submissions without such justification will be rejected without review.