Novel Silver Loaded Hydroxyapatite Catalyst for the Selective Catalytic Reduction of NO_x by Propene

摘要

A novel and high performance silver loaded hydroxyapatite(HAp)catalyst for the selective catalytic reduction(SCR)of NO_x by propene is reported for the first time.The catalysts with variable silver contents have been prepared and characterized extensively by different techniques such as XRD,XPS,BET-surface area,TPR,TPD and ICP analyses.The DeNO_x activities of these catalysts are measured at reaction temperature ranged from 250 to 500 °C.The 1.5 wt.% Ag/HAp is found to be best among all the catalysts studied showing about 70% conversion and 60% selectivity towards N2 formation at 375 °C in oxygen rich atmosphere.