Preparation of γ-Al2O3/α-Al2O3 ceramic foams as catalyst carriers via the replica technique

Vladimir Shumilov, Alexey Kirilin, Anton Tokarev, Stephan Boden, Markus Schubert, Uwe Hampel, Leena Hupa, Tapio Salmi, Dmitry Yu Murzin*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

This work describes an effective method for the preparation of open-cell ceramic foams for their further use as catalyst supports. The polyurethane sponge replica technique was applied using a ceramic suspension based on a mixture of α-alumina, magnesia and titania and polyvinyl alcohol solution as a liquid component. The polyurethane sponge was etched with NaOH and covered with colloidal silica to obtain better adhesion of the slurry to the walls of the polymeric material onto it. The surface area of the ceramic carrier was increased by adding a layer of γ-alumina. Deposition of an active catalytic phase (Pt) was done by impregnation. Properties of the carriers and the final catalyst were investigated by a number of physico-chemical methods such as TEM, SEM, XRD and computer tomography. Hydrogenation of ethyl benzoylformate was performed to elucidate the catalytic properties of foam catalysts illustrating their applicability.

Original languageEnglish
JournalCatalysis Today
DOIs
Publication statusAccepted/In press - 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • Catalytic foams
  • Hydrogenation of ethylbenzoylformate
  • Macroporous ceramics
  • γ-AlO/α- AlO

Fingerprint Dive into the research topics of 'Preparation of γ-Al<sub>2</sub>O<sub>3</sub>/α-Al<sub>2</sub>O<sub>3</sub> ceramic foams as catalyst carriers via the replica technique'. Together they form a unique fingerprint.

Cite this