Stabilization of MCM-41 by Pyrolytic Carbon Deposition
Stabilization of MCM-41 by Pyrolytic Carbon Deposition
复制标题
DOI：
10.1021/la000671a
复制
发表时间：
2000-11
期刊：
影响因子：
3.9
通讯作者：
M. Carrott;A. Candeias;P. Carrott;K. Sing;K. Unger
中科院分区：
文献类型：
--
作者：
M. Carrott;A. Candeias;P. Carrott;K. Sing;K. Unger
提出了一种在水蒸气存在下对MCM-41白炭黑进行有效稳定的表面改性新方法。X射线衍射仪、低温氮气吸附和水蒸气吸附测试表明，苯蒸汽热解沉积碳显著提高了材料的稳定性，而且与未改性材料相比，孔体积和孔宽度仅有较小的减小。
A new method of surface modification which is effective in stabilizing silica grades of MCM-41 in the presence of water vapor is presented. It is shown by means of XRD, low-temperature nitrogen adsorption, and water vapor adsorption measurements that deposition of carbon from benzene vapor pyrolysis considerably improves the stability and, furthermore, that this is achieved with only a small decrease of the pore volume and pore width in relation to those of the unmodified material.