Preparation of thin porous titania films on stainless steel substrates for heat exchange (HEX) reactors

Mikihiro Nomura, Ben Meester, Joop Schoonman, Freek Kapteijn, Jacob A. Moulijn

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

A porous titania film with pores of few micrometer sizes was prepared on a stainless steel support for a composite material of metal and inorganic oxide. The combination of a porous catalyst layer and a metal support improves the thermal conductivity compared with a traditional inorganic powder catalyst by an aid of a metal support. A porous titania film was obtained on a stainless steel support by the electrostatic sol-spray deposition (ESSD) method. Water in the parent sol was a key factor to obtain porous films. These porous films were cracked by a rapid temperature change during the cooling procedure after the deposition by the difference of the thermal expansion rate of stainless steel and titania. The parent sol was aged before a deposition to obtain a flexible structure to keep its structure. The obtained porous films comprised an aggregation of fibrous titania with few micrometer pores by SEM observation. This film was stable for a rapid temperature change. A porous titania film without any cracks were obtained on a stainless steel substrate using the ESSD method by an aging of the parent sol.

Original languageEnglish
Pages (from-to)387-395
Number of pages9
JournalSeparation and Purification Technology
Volume32
Issue number1-3
DOIs
Publication statusPublished - 2003 Jul 1

Keywords

  • Composite membrane reactor
  • Electrostatic sol-spray deposition
  • Metal support
  • Porous titania film

ASJC Scopus subject areas

  • Analytical Chemistry
  • Filtration and Separation

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