In situ crystallization of b-oriented MFI films on plane and curved substrates coated with a mesoporous silica layer

Zhiyong Deng, Marc Pera-Titus

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

A simple and reproducible method is presented for preparing b-oriented MFI films on plane (disc) and curved (hollow fiber) supports by in situ hydrothermal synthesis. A mesoporous silica (sub-)layer was pre-coated on the supports by dip coating followed by a rapid thermal calcination step (973 K during 1 min) to reduce the number of grain boundaries while keeping the hydrophilic behavior of silica. The role of the silica sub-layer is not only to smoothen the substrate surface, but also to provide a silica source to promote the nucleation and growth of zeolite crystals via a heterogeneous nucleation mechanism (zeolitization), and adsorb zeolite moieties generated in the synthesis solution via a homogeneous nucleation mechanism. A monolayer of b-oriented MFI crystals was obtained on both supports after 3 h synthesis time with a moderate degree of twinning on the surface. © 2013 Elsevier Ltd.
Original languageEnglish (US)
Pages (from-to)1874-1880
Number of pages7
JournalMaterials Research Bulletin
Volume48
Issue number5
DOIs
StatePublished - May 2013
Externally publishedYes

Fingerprint Dive into the research topics of 'In situ crystallization of b-oriented MFI films on plane and curved substrates coated with a mesoporous silica layer'. Together they form a unique fingerprint.

Cite this