Investigation and preparation of CeO₂-TiO₂/FA (fly ash) SCR catalyst

ABSTRACT

CeO₂-TiO₂/FA catalysts with the selective catalytic reduction (SCR), using industrial solid waste-Fly Ash (FA) as the supporter was prepared by sol-gel and insuccation methods. Ammonia was used as reducing gas to detect the catalytic performance of as-prepared catalyst. Surface structure and catalytic properties of the catalyst were characterized by using BET, XRD, SEM and denitrification tests, respectively. It was confirmed that the loading of CeO₂ and TiO₂ on FA supporter led to the increased the specific surface area of catalysts, which resulted in the enhanced catalytic performance toward removing NOx. The NOx conversion over this catalyst can reach 95.3%.

KEYWORDS:

• Environmental catalysts
• SCR
• fly ash
• supported catalysts
• CeO₂-TiO₂/FA

Funding

This project was financially supported by Key Laboratory of Salt Lake Resources and Chemistry of Qinghai Province (KLSLRC-KF-13-HX-10), Key Laboratory of Comprehensive Utilization of Salt Lake Resources of Qinghai Province (Q-SYS-2014-KF-02), Key Laboratory Project of Qinghai Province (2014-Z-Y04) and Science and Technology Research of Xining city (2015-G-06).