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Experimental and Kinetic Study of Selective Catalytic Reduction of NO with NH_3 over CuO/Al_2O_3/Cordierite Catalyst
  • ISSN号:1004-9541
  • 期刊名称:《中国化学工程学报:英文版》
  • 时间:0
  • 分类:O643.36[理学—物理化学;理学—化学] X701[环境科学与工程—环境工程]
  • 作者机构:[1]State Key Eaboratory o-f Chemical Resource Engineenng, Beijing University of Chenaical Technology, Beijing 100029,China
  • 相关基金:Supported by the National Natural Science Foundation of China (20821004 20736001 21076008); the Research Fund for the Doctoral Program of Higher Education of China (2090010110002)
中文摘要:

在在 673 K 是由硫二氧化物(SO2 ) 的 sulfated 以后, CuO/-Al2O3/cordierite 催化剂为氮氧化物的选择催化减小(SCR ) 展出高活动(没有) 与在 573-723 K 的氨(NH3 ) 。SCR 的内在的动力学不,与在 CuO/-Al2O3/cordierite 上的 NH3,催化剂当内部、外部的散开不在时在一个改正床反应堆被测量了。试验性的结果证明反应率能被一阶的表情与 94.01 kJ 的激活精力 Ea 确定吗?

英文摘要:

The CuO/γ-Al2O3/cordierite catalyst, after being sulfated by sulfur dioxide (SO2) at 673 K, exhibits high activities for selective catalytic reduction (SCR) of nitrogen oxide (NO) with ammonia (NH3) at 573-723 K. The intrinsic kinetics of SCR of NO with NH3 over CuO/γ-Al2O3/cordierite catalyst has been measured in a fixed-bed reactor in the absence of internal and external diffusions. The experimental results show that the reaction rate can be quantified by a first-order expression with activation energy Eá of 94.01 kJ·mol-1 and the corresponding p re-exponential factor A′ of 3.39×108 cm3·g-1·s-1 when NH3 is excessive. However, when NH3 is not enough, an E ley-Rideal kinetic model based on experimental data is derived with Ea of 105.79 kJ·mol-1, the corresponding A of 2 .94×109 cm3·g-1·s-1, heat of adsorption-Hads of 87.90 kJ·mol-1 and the corresponding Aads of 9.24 cm3·mol-1. The intrinsic kinetic model obtained was incorporated in a 3D mathematical model of monolithic reactor, and the agreement of the prediction with experimental data indicates that the present kinetic model is adequate for the reac-tor design and engineering scale-up.

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期刊信息
  • 《中国化学工程学报:英文版》
  • 中国科技核心期刊
  • 主管单位:中国科协
  • 主办单位:中国化学工业与化学工程学会
  • 主编:
  • 地址:北京东城区青年湖路13号
  • 邮编:100011
  • 邮箱:cjche@cip.com.cn
  • 电话:010-64519487/88
  • 国际标准刊号:ISSN:1004-9541
  • 国内统一刊号:ISSN:11-3270/TQ
  • 邮发代号:
  • 获奖情况:
  • 1998年化工系统优秀信息成果一等奖,中国期刊方阵“双效”期刊
  • 国内外数据库收录:
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  • 被引量:385