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700MW超临界锅炉分仓配煤燃烧优化调整试验研究

ISSN号：1001-9529
期刊名称：《华东电力》
时间：0
分类：O613.61[理学—无机化学;理学—化学] TQ174.758[化学工程—陶瓷工业;化学工程—硅酸盐工业]
作者机构：[1]Suzhou Nuclear Power Research Institute, Suzhou 215004, China, [2]State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
相关基金：Projects（50806025, 51021065, 50976038） supported by the National Natural Science Foundation of China; Project（20100480893） supported by the China Postdoctoral Science Foundation; Project（1001022B） supported by the Postdoctoral Research Fund of Jiangsu Province, China

关键词： Al2O3, NO分子, 吸附系统, NH3, 催化剂, CUO, 选择性催化还原反应, 密度泛函理论, CuO/γ-Al2O3, NH3, NO, adsorption, diffusion reflectance infrared Fourier transform spectroscopy, density functionaltheory

中文摘要：

选择催化减小反应属于煤气固体的多相的反应，并且 CuO/-Al2O3 催化剂上的 NH3 并且不的吸附在反应起一个重要作用。CuO/-Al2O3 催化剂的性能在一个固定的床吸附系统被探索。催化剂不将近百分之百在 350 楴湯欻湩瑥捩 ? 敭档湡獩 ? 畦据楴湯维持变换效率

英文摘要：

The selective catalytic reduction reaction belongs to the gas-solid multiphase reaction, and the adsorption of NH3 and NO on CuO/γ-Al2O3 catalysts plays an important role in the reaction. Performance of the CuO/γ-Al2O3 catalysts was explored in a fixed bed adsorption system. The catalysts maintain nearly 100% NO conversion efficiency at 350℃. Comprehensive tests were carried out to study the adsorption behavior of NH3 and NO over the catalysts. The desorption experiments prove that NH3 and NO are adsorbed on CuO/γ-Al2O3 catalysts. The adsorption behaviors of NH3 and NO were also studied with the in-situ diffusion reflectance infrared Fourier transform spectroscopy methods. The results show that NH3 could be strongly adsorbed on the catalysts, resulting in coordinated NH3 and NH4＋. NO adsorption leads to the formation of bridging bidentate nitrate, chelating bidentate nitrate, and chelating nitro. The interaction of NH3 and NO molecules with the Cu2＋ present on the CAl2O3 （100） surface was investigated by using a periodic density functional theory. The results show that the adsorption of all the molecules on the Cu2＋ site is energetically favorable, whereas NO bound is stronger than that of NH3 with the adsorption site, and key information about the structural and energetic properties was also addressed.