Issue 7, 2014

Influence of treatment conditions on decomposition activity of N2O over FeZSM-5 with high iron content

Abstract

The influence of treatment on formation and activity of surface oxygen over FeZSM-5 with high iron content was studied by using a transient multipulse technique combined with temperature-programmed desorption (TPD) and steady-state kinetics. All samples after various treatments were characterised by N2 sorption, NH3-TPD, H2-TPR, and DR-UV–vis. Multipulse experiment results showed that the reductive and inert treatments increase the amount of surface oxygen species formed from N2O. However, the oxidative treatment inhibits almost half of the oxygen formation. High temperature treatment increases not only the surface oxygen amount but also steady-state decomposition of N2O. Based on TPD and CO oxidation with surface oxygen, the active oxygen species formed from N2O are desorbed at low temperature and their amounts increase with oxidative and vacuum treatments and decrease with high temperature treatment. Vacuum treatment in a batch system increases the amount of surface oxygen and prevents transformation of active oxygen species to inactive oxygen species.

Graphical abstract: Influence of treatment conditions on decomposition activity of N2O over FeZSM-5 with high iron content

Article information

Article type
Paper
Submitted
26 Nov 2013
Accepted
14 Mar 2014
First published
02 May 2014

Catal. Sci. Technol., 2014,4, 2031-2041

Influence of treatment conditions on decomposition activity of N2O over FeZSM-5 with high iron content

A. Ates, Catal. Sci. Technol., 2014, 4, 2031 DOI: 10.1039/C3CY00974B

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements