Synthesis of novel Ag modified MCM-41 mesoporous molecular sieve and beta zeolite catalysts for ozone decomposition at ambient temperature

Narendra Kumar, Petya M. Konova, Anton Naydenov, Teemu Heikillä, Tapio Salmi, Dmitry Yu Murzin*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

26 Citations (Scopus)

Abstract

Mesoporous molecular sieve Na-MCM-41 with Si/Al ratio 20 and 50 and Na-bcta zeolite with Si/Al ratio 11 were synthesized and characterized using X-ray powder diffraction, scanning electron microscope and nitrogen adsorption. The Ag (5 and 2 wt%) modifications of H-MCM-41-20, H-MCM-41-50 and H-beta-11 catalysts were carried out using impregnation method. The catalysts were tested in the decomposition of ozone at ambient temperature. The 5 wt% Ag-H-MCM-41 catalyst showed a very high decomposition of ozone (∼98%). The 5 wt% Ag-H-MCM-41-50 catalyst exhibited higher decomposition rate than 2 wt% AgH-MCM-41-50. The Ag modified H-MCM-41 catalyst with higher Si/Al ratio showed higher reaction rate than the catalyst with lower Si/Al ratio. The H-MCM-41 catalyst without Ag exhibited the lowest decomposition of ozone indicating an important role of Ag in the reaction.

Original languageEnglish
Pages (from-to)57-60
Number of pages4
JournalCatalysis Letters
Volume98
Issue number1
DOIs
Publication statusPublished - Oct 2004
MoE publication typeA1 Journal article-refereed

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