空间速度
催化作用
选择性
氨
陶瓷
化学工程
材料科学
蜂巢
无机化学
化学
氨生产
压力降
复合材料
有机化学
热力学
物理
工程类
作者
Zhenping Qu,Zhong Wang,Xie Quan,Hui Wang,Yun Shu
标识
DOI:10.1016/j.cej.2013.08.028
摘要
The novel wire–mesh honeycomb (WMH) was reported to be an excellent substrate of active component for selective catalytic oxidation of ammonia under laboratory-simulated synthetic ammonia stream, and was also evaluated in comparison with traditional ceramic honeycomb (CH). WMH possessed higher open frontal area (OAF), larger geometric surface area (GAS), and lower pressure drop compared with CH, which induced the excellent mass- and heat-transfer rate and conversion efficiency. Different active components displayed the different catalytic performance. The active Ag species exhibited better NH3 conversion, and the Cu species could evidently improve N2 selectivity. The addition of Ce species into Cu catalyst promoted the NH3 conversion but decreased in the N2 selectivity. Comparatively, the Ag–Cu/WMH catalyst exhibited higher resistance to high gas hourly space velocity (GHSV) and the superior NH3-SCO activity and N2 selectivity, which was appropriately used to eliminate higher concentration NH3. Moreover, the Ag–Cu/WMH catalyst displayed the excellent NH3 conversion in the long-term stability and accelerated deactivation experiment, which indicated that the Ag–Cu/WMH catalyst would have an extremely potential application in NH3 abatement for synthetic ammonia industry.
科研通智能强力驱动
Strongly Powered by AbleSci AI