Issue 18, 2015

Cu/Mn co-loaded hierarchically porous zeolite beta: a highly efficient synergetic catalyst for soot oxidation

Abstract

A hierarchically porous zeolite beta has been designed via a facile combined surfactant-assisted hydrothermal treatment and subsequent alkali etching approach. High contents of the Cu and Mn species were then highly dispersed into the as-synthesized hierarchically porous zeolite beta. The prepared composite catalyst exhibits highly active, stable and recyclable catalytic performances for soot oxidation, and extraordinarily low T50 (260 °C) and T90 (300 °C) values can be achieved in the presence of NO. A synergetic catalytic effect between valence-varied active species Cun+ and Mnn+ has been proposed, which features the promoted generations of highly active oxygen species O/O2− and active intermediate NO2. In addition, the obtained catalyst shows an excellent water resistance performance in soot oxidation due to the hydrophobic crystalline zeolite framework and the interaction between soot and water vapor.

Graphical abstract: Cu/Mn co-loaded hierarchically porous zeolite beta: a highly efficient synergetic catalyst for soot oxidation

Supplementary files

Article information

Article type
Paper
Submitted
06 Jan 2015
Accepted
16 Mar 2015
First published
18 Mar 2015

J. Mater. Chem. A, 2015,3, 9745-9753

Cu/Mn co-loaded hierarchically porous zeolite beta: a highly efficient synergetic catalyst for soot oxidation

X. Zhou, H. Chen, G. Zhang, J. Wang, Z. Xie, Z. Hua, L. Zhang and J. Shi, J. Mater. Chem. A, 2015, 3, 9745 DOI: 10.1039/C5TA00094G

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