期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 163, 期 1, 页码 180-186出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2008.06.092
关键词
Catalytic wet oxidation (CWO); Ammonia; Trickle-bed reactor (TBR); Nanoscale platinum-palladium-rhodium composite oxide catalysts
资金
- National Science Council of the Republic of China, Taiwan [NSC95-2211-E-132-001]
Aqueous solutions of 400-1000 mg/L of ammonia were oxidized in a trickle-bed reactor (TBR) in this study of nanoscale platinum-palladium-rhodium composite oxide catalysts, which were prepared by the coprecipitation of H2PtCl6, Pd(NO3)(3) and Rh(NO3)(3). Hardly any of the dissolved ammonia was removed by wet oxidation in the absence of any catalyst, whereas about 99% of the ammonia was reduced during wet oxidation over nanoscale platinum-palladium-rhodium composite oxide catalysts at 503 K in an oxygen partial pressure of 2.0 MPa. A synergistic effect exists in the nanoscale platinum-palladium-rhodium composite structure. which is the material with the highest ammonia reduction activity. The nanometersized particles were characterized by TEM, XRD and FTIR. The effect of the initial concentration and reaction temperature on the removal of ammonia from the effluent streams was also studied at a liquid hourly space velocity of under 9 h(-1) in the wet catalytic processes. (C) 2008 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据