Journal Article

Catalytic Decomposition of Nitrogen Oxides by Bimetallic Catalysts Synthesized by Dielectric Barrier Discharge Plasma Technology

Tan, Xiao, Qu, Jifeng, Jiao, Tianyou, Yi, Chunhai, Shi, Libin, Yang, Bolun, Qi, Suitao

2018

Overview

Nitrous oxide (N 2 O) is a common greenhouse gas and urgent need to be contained. Direct catalytic decomposition of N 2 O by high activity catalyst into N 2 and O 2 is a low-cost and harmless method. Bimetallic catalysts show good catalytic activity in many classes of reactions, and plasma technologies, applied to prepare of catalyst, are considered to be a promising method. In our contribution, DBD cold plasma is applied to synthesize Rhodium and Cobalt bimetallic catalysts for catalytic N 2 O decomposition. The influence of cobalt and rhodium content on N 2 O decomposition activity shows that the optimal amount of metal is determined as 5wt. % cobalt and 0.5wt. % rhodium loaded on Al 2 O 3 . The best working voltage is determined as 18kV. The results indicated that the Rh/Al 2 O 3 catalysts prepared by atmospheric-pressure DBD cold plasma showed smaller size and high dispersion of Rh particles, so that the metal-support interaction and the catalytic activity are enhanced. Atmospheric-pressure DBD cold plasma is proved to be an environmentally friendly and efficient method for preparing high performance Rhodium and Cobalt bimetallic catalysts for catalytic N 2 O decomposition.

• Publisher: EDP Sciences
• Subject: Aluminum oxide / Bimetals / Catalysts / Catalytic activity / Chemical synthesis / Cobalt / Cold plasmas / Decomposition / Dielectric barrier discharge / Greenhouse gases / Nitrogen oxides / Nitrous oxide / Photochemicals / Plasma / Rhodium