- 作者: 鄭吉豐,周書賢,鄭博文,鄭旭軒,葉華光
- 作者服務機構: Department of Chemistry, Center of Nanotechnology and R&D Center for Membrane and Technology, Chung Yuan Christian University, 200, Chung Pei Rd.,Chung Li, Taiwan 32023, R.O.C.
- 中文摘要: Wall thickness of siliceous MCM-41 could be controlled systematically up to 36.1 A. A reasonable model explaining formation of thicker MCM-41 walls, not enlarging pore channel is proposed on the basis of TGA and 13C MAS NMR data of samples. Thermal restructuring process under mild basic condition favors the silica redeposition on silica wall and building up thicker wall. Most mesostructure of calcined MCM-41 with thicker wall was retained even after hydrothermal treatment in boiling water for 14 days. To our best knowledge, the excellent hydrothermal stability of the MCM-41 silica reported herein has not been described before and facilitates practical applications of mesoporous molecular sieves in future.
- 英文摘要: --
- 中文關鍵字: MCM-41 silica; Mesoporous molecular sieve; Wall thickness
- 英文關鍵字: --