Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 27, Issue 34, Pages 8694-8697Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202100701
Keywords
Heterocycles; MFI zeolites; nanosheets; self-assembly; stacking interactions
Categories
Funding
- Natural Science Foundation of China [21776311, 51601223]
- Shandong Provincial Natural Science Foundation, China [ZR2016BM28, ZR2019MB045]
- National Key Technologies R&D Program of China
- Key Projects of Intergovernmental International Innovation Cooperation [2018YFE0118200]
- Key Research and Develop-ment Project of Shandong province [2019JZZY010506]
- Fundamental Research Funds for the Central Universities [15CX05030A]
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Soft template designing is a promising approach for the synthesis of zeolite nanosheets, with the use of s-triazine-based surfactant leading to the successful synthesis of a nanosheet-stacked hierarchical MFI zeolite with high surface area and abundant mesopores. The synthesized NSHM showed a significant increase in yield in the oxidation of cyclohexane compared to traditional supports.
Soft template designing is the most promising strategy for the synthesis of zeolite nanosheets. MFI nanosheets directed by soft templates (containing long-chain alkyl groups or aromatic groups as hydrophobic component) can be found frequently; however, so far, MFI nanosheets synthesized by soft templates with aromatic heterocycle groups (e. g., s-triazine groups) are rare. Herein, a nanosheet-stacked hierarchical MFI zeolite (NSHM) has been synthesized by using a triply branched s-triazine-based surfactant as a bifunctional organic structure-directing agent. On the basis of a geometrical match relationship, a formation model has been proposed. Synthesized NSHM had abundant mesopores stacked by nanosheets and exhibited a high surface area (430 m(2) . g(-1)). The 1 wt% Pd/NSHM attained a significant increase in yield of cyclohexanol/cyclohexanone mixture (from 66 to 85 %) in the oxidation of cyclohexane compared with Silicalite-1 and SBA-15 as supports.
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