SO2 Tolerance of Rice Hull Ash Based Fe-Cu Catalysts for Low-Temperature CO-SCR of NO

Catalysts

卷:12

Zhaohui Teng¹  Shan Huang²  Na Li³  Qulan Zhou³ 

[1] College of Energy, Chengdu University of Technology, Chengdu 610059, China;

[2] Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610213, China;

[3] The State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China;

关键词: rice husk ash;    Fe-Cu catalysts;    NO reduction;    SO₂ resistance;    CO-SCR;   

DOI  :  10.3390/catal12050534

来源: DOAJ

【 摘 要 】

Rice husk ash (RHA) has potential as a supporter of catalysts. In this research, we studied the activity and SO₂ tolerance of RHA-based Fe-Cu oxide in the reduction of NO by CO. Characterization methods were employed to study the properties of the catalysts and their SO₂ tolerance. Activity and SO₂ resistance were also tested at different temperatures. We recommend two catalysts with SO₂ resistance ability: Fe_0.67Cu_0.33/RHA (the highest catalytic activity) and Fe_0.8Cu_0.2/RHA. The NO removal rate hardly changed with the addition of SO₂ and was kept at about 100%. However, the CO conversion rate decreased with increasing SO₂ at the lower reaction temperatures, which may be due to the formation of sulfites. Fortunately, the deactivation was reversible and can be reduced with an increase in the reaction temperature. The results of our research may help promote the application of CO-SCR.

【 授权许可】

Unknown