Catalytic oxidation of benzene with ozone over alumina-supported manganese oxides

Hisahiro Einaga, Shigeru Futamura

Research output: Contribution to journalArticlepeer-review

221 Citations (Scopus)

Abstract

Catalytic oxidation of benzene with ozone over alumina-supported manganese oxides was carried out at room temperature (295 K) to investigate the behavior of benzene oxidation and COx formation. The ratio of the decomposition rate for ozone to that for benzene was found to be 6, independent of ozone concentration, reaction times, and the amount of Mn loading. A linear correlation was observed for the amount of ozone decomposed and that of COx formed, whereas deviation from linearity was observed between the amount of ozone decomposed and that of benzene reacted. Carbon balance was in the range of 26-37% due to the formation of two types of intermediates, weakly bound compounds including formic acid and strongly bound surface formate and carboxylates. Catalyst was significantly deactivated due to the buildup of the intermediates on the catalyst surface during the course of benzene oxidation. The weakly bound compounds were removed by heat treatment at 573 K in the O2 flow. The strongly bound surface formate and carboxylates were oxidized to COx by further heating up to 723 K. The deactivated catalyst was regenerated by the heat treatment.

Original languageEnglish
Pages (from-to)304-312
Number of pages9
JournalJournal of Catalysis
Volume227
Issue number2
DOIs
Publication statusPublished - Oct 25 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Physical and Theoretical Chemistry

Fingerprint Dive into the research topics of 'Catalytic oxidation of benzene with ozone over alumina-supported manganese oxides'. Together they form a unique fingerprint.

Cite this