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| 改性分子筛MCM—41的氮气,水,环己烷吸附等温线 | |
| 引用本文： | 许太明 龙英才. 改性分子筛MCM—41的氮气,水,环己烷吸附等温线[J]. 复旦学报(自然科学版), 1998, 37(3): 313-317 |
| 作者姓名： | 许太明 龙英才 |
| 作者单位： | 复旦大学化学系!上海200433 |
| 摘 要： | 采用三甲基氯硅烷、二甲基二氯硅烷以及水蒸气对高硅分子筛ＭＣＭ－４１进行改性，通过对氮气，水和环己烷的吸附等温线测定，以及ＸＲＤ对改性后的ＭＣＭ－４１进行表征。实验结果表明，ＭＣＭ－４１除具有一维的直孔道外，还存在微孔或孔壁缺陷；ＭＣＭ－４１表面改性处理后，改变了ＭＣＭ－４１表面硅羟基数，也调变了ＭＣＭ－４１的孔径及疏水程度。 |
| 关 键 词： | MCM－41 分子筛 吸附等温线 氮气 水 环己烷 |
Adsorption Isotherms of Nitrogen, Water, and Cyclohexane on Modified MCM-41 Molecular Sieve |
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| Xu Taiming,Long Yingcai. Adsorption Isotherms of Nitrogen, Water, and Cyclohexane on Modified MCM-41 Molecular Sieve[J]. Journal of Fudan University(Natural Science), 1998, 37(3): 313-317 | |
| Authors: | Xu Taiming Long Yingcai |
| Affiliation: | Department of Chemistry |
| Abstract: | High siliceous MCM-41 molecular sieve was modified with chlorotrimethylsilane,dimethyl -dichlorosilane, and air saturated water steam. XRD, adsorpt ion isotherms of nitrogen, water and cyclohexane, were used to characterize the modified MCM-41. The results show that there are micropores and defects of pore surface in MCM-41 structure. The number of surface hydroxy radical of MCM-41 and the pore diameter of the niolecular sieve can be changed by modification. The hydrophobic character of MCM-41 has been changed af- ter modification. |
| Keywords: | molecular sieve MCM-41 surface modification adsorption isotherm |
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