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Reference type: Journal
Authors: Chao PH, Jean WCC, Lin HP, Tsai TC
Article Title: Intercalation of silanes by ion imprinting method for improving hydrothermal stability of mesoporous silica.
Publication date: 2013
Journal: Catalysis Today
Volume: 212
Page numbers: 175-179.
DOI: 10.1016/j.cattod.2012.08.029
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0920586112005998

Abstract: Hydrothermal stability of mesoporous silica was improved by intercalation of CuAAPTS (3-(2-aminoethylamino) propyltrimethoxysilane, AAPTS) complex by means of ion imprinting method. The ion imprinting method involves ion exchange of Cu(AAPTS)22+ complex and covalent bond formation with surface silanol group, removing Cu2+ ion by protonation reaction with nitric acid, and decomposition of AAPTS by calcination. The improved hydrothermal stability by CuAAPTS modification is attributed to the highly crosslinked silica "pillars" as a result of condensation of AAPTS and surface silanol groups by means of covalent bonding; and hydrophobic surfaces without alteration of the wall thickness of MCM-41
Template and target information: copper ion, Cu(II)
Author keywords: mesoporous silica, Hydrothermal stability, ion imprinting, Cu-AAPTS complex


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