Synthesis of zeolitic mesoporous materials by dry gel conversion under controlled humidity

Sajo P. Naik, Anthony S.T. Chiang, R. W. Thompson

Research output: Contribution to journalArticlepeer-review

100 Scopus citations

Abstract

A new variation to the dry gel conversion method for the preparation of zeolite is introduced, where the conversion to zeolite was accomplished under water vapor below the saturation condition. The dry gel was made either by vacuum concentration or by surfactant flocculation from a silica precursor sol after the preliminary hydrothermal step. Depending of the humidity under which the conversion took place, mesoporous structures with varying MFI crystallinity, BET, and crystalline external surface areas were produced. The effects of precursor preparation and surfactant flocculation conditions on mesoporosity and crystallinity of the final product, as well as the steam stability of the product, were also investigated. The approach could find general application in the synthesis of other zeolites as well as metal oxides.

Original languageEnglish
Pages (from-to)7006-7014
Number of pages9
JournalJournal of Physical Chemistry B
Volume107
Issue number29
DOIs
StatePublished - 21 Jul 2003

Fingerprint

Dive into the research topics of 'Synthesis of zeolitic mesoporous materials by dry gel conversion under controlled humidity'. Together they form a unique fingerprint.

Cite this