Influence of ion exchange and calcination on pore size and thermal stability of MCM-41 with different Si/Al ratios
- 1 January 1998
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions
- Vol. 94 (6) , 817-820
- https://doi.org/10.1039/a707287b
Abstract
A decrease in pore size and increase in thermal stability of three different MCM-41 materials with Si/Al ratios of 18.6, 17.3 and 3.1, due to ammonia ion exchange and following calcination at 540°C, has been observed by N2 sorption measurements, differential thermal analysis (DTA) and X-ray diffraction (XRD). An explanation based on recrystallization at the pore mouth is proposed and the influence of the alumina content of the materials is discussed.Keywords
This publication has 0 references indexed in Scilit: