Mechanical stability of monolithic catalysts: Improving washcoat adhesion by FeCrAl alloy substrate treatment

Research output: Contribution to journalArticleScientificpeer-review

Researchers

Research units

  • Tianjin University
  • Southeast University

Abstract

Alumina-washcoated FeCrAl alloy sheets are prepared to investigate the effects of metallic substrate pretreatments on the mechanical stability of monolithic catalysts. It is shown that chemical and thermal pretreatments produce different effects on the metallic surface morphology and phase, and different mechanisms are involved in their ways of improving the washcoat adhesion. Combination of chemical and thermal pretreatments leads to the formation of α-alumina whiskers on corroded and rough metallic surface, thus giving the most satisfactory washcoat adhesion. It is also pointed out that not only mechanical shock resistance but also thermal shock resistance is crucial to metallic monolithic catalysts.

Details

Original languageEnglish
Pages (from-to)175-184
Number of pages10
JournalJOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
Volume56
Publication statusPublished - 2017
MoE publication typeA1 Journal article-refereed

    Research areas

  • Monolithic catalyst, Monolithic reactor, Metallic monolith, Washcoat adhesion, Mechanical stability

ID: 16586326