Journal
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
Volume 18, Issue 1, Pages 92-97Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2011.11.083
Keywords
Hollow fibers; Polyethylene imine (PEI) fibers; Silicalite-1; TS-1
Funding
- National Natural Science Foundation of China [21063006]
- Natural Science Foundation of Hainan [210012]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars
- Hainan University
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Silicalite-1 and titanium containing silicalite-1 (TS-1) hollow fibers were fabricated with polyethylene imine (PEI) fibers as substrates. The acid treated PEI fibers were positively charged and can be effectively coated with silicalite-1 or TS-1 nanocrystals from their colloidal solution. The adsorbed silicalite-1 or TS-1 nanocrystals grew up and became more compact upon two days of vapor phase Ostwald ripening in autoclave. Silicalite-1 and TS-1 hollow fibers were obtained after calcination at 400 degrees C in air. The shell thickness of the hollow fibers is similar to 1 mu m. Hydroxylation of phenol with H2O2 was investigated over TS-1 based catalysts in order to compare influences of nanocrystals composed macrostructure and Al2O3 binder on the catalytic activities. (C) 2011 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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