Post-treatment of mesoporous material with high temperature for synthesis super-microporous materials with enhanced hydrothermal stability |
| |
Authors: | Ke Song |
| |
Affiliation: | College of Chemistry, Jilin University, Changchun, 130023, PR China |
| |
Abstract: | Super-microporous silicon material with high hydrothermal stability denoted as MCM-48-T has been prepared from mesoporous MCM-48 by high temperature treatment. The structural and chemical property of MCM-48-T has been characterized by variety of techniques such as small-angle X-ray diffraction (XRD), transmission electron microscopy (TEM), N2 adsorption-desorption, infrared spectroscopy (IR) and 29Si MAS NMR, etc. The results showed that Si-OH groups are forced to condense by the treatment of high temperature and the pore size of MCM-48-T is around 1.03 nm in the super-microporous range. Besides, the ratio of Q4/Q3 increases considerably. Compared with the original material (MCM-48), the hydrothermal stability of MCM-48-T has significantly enhanced. |
| |
Keywords: | 82.75.&minus z 81.07.&minus b 81.16.&minus c |
本文献已被 ScienceDirect 等数据库收录! |
|