Growth of hydrothermally stable meso-porous silica structure interconnected around micro-porous zeolite crystals

TitleGrowth of hydrothermally stable meso-porous silica structure interconnected around micro-porous zeolite crystals
Publication TypeJournal Article
Year of Publication2011
AuthorsKinage, AK, Prashar, AK, Berlier, G, Chaturvedi, RK
JournalMaterials Characterization
Volume62
Issue12
Pagination1166-1172
Date PublishedDEC
ISSN1044-5803
KeywordsHydrothermal stability, Interconnected meso-porous silica, Meso-micro hybrid material, Synthesis of amino alcohol
Abstract

The growth of hydrothermally stable ordered meso-porous silica with M41S type structure interconnected around zeolite crystals was achieved from seeds normally nucleating the crystallization of micro-porous zeolite. The solid state NMR and FT-IR showed species like Si(OSi)(3)OH and Si(OSi)(2)(OH)(2) (or Q(3) and Q(2) sites, respectively) are formed during first hydrothermal treatment with surfactant and NaOH. These species and surface silanol group of zeolite crystal condense to give meso-porous silica structure interconnected around zeolite crystal during re-crystallization at lower pH. Resulting meso-micro-porous hybrid material is found to be highly active, selective and stable in the synthesis of 2-(phenylamino) ethanol from aniline and ethylene carbonate compare to parent ZSM-5 and pure MCM-41. (C) 2011 Elsevier Inc. All rights reserved.

DOI10.1016/j.matchar.2011.09.002
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)2.05
Divison category: 
Catalysis and Inorganic Chemistry