整体式Mn基低温脱硝催化剂研究

化工进展 ›› 2015, Vol. 34 ›› Issue (s1): 127-130.

整体式Mn基低温脱硝催化剂研究

王学海¹, 吴昊^1,2, 刘忠生¹

1. 抚顺石油化工研究院, 辽宁抚顺 113001;
2. 辽宁石油化工大学, 辽宁抚顺 113001

出版日期:2015-09-20 发布日期:2015-10-20
通讯作者: 王学海(1976—),男,高级工程师,研究方向为环保催化。E-mail wangxuehai.fshy@sinopec.com。
作者简介:王学海(1976—),男,高级工程师,研究方向为环保催化。E-mail wangxuehai.fshy@sinopec.com。
基金资助:
中国石油化工股份有限公司项目(314022)。

Performance of monolithic Mn catalyst for low temperature SCR

WANG Xuehai¹, WU Hao^1,2, LIU Zhongsheng¹

1. Fushun Research Institute of Petroleum and Petrochemicals, SINOPEC, Fushun 113001, Liaoning, China;
2. Liaoning Shihua University, Fushun 113001, Liaoning, China

Online:2015-09-20 Published:2015-10-20

摘要/Abstract

摘要： 采样硝酸锰和乙酸锰两种Mn的前体制备以堇青石为基体的整体式脱硝催化剂,并进行了氨选择性催化还原NO反应(NH₃-SCR)和BET、XRD、XPS等表征。以硝酸锰为前体的催化剂具有更好的低温脱硝活性,在反应温度150～250℃的范围内,MnN/TiO₂/CC催化剂的脱硝率接近100%;而当反应温度超过250℃后,MnA/TiO₂/CC催化剂比MnN/TiO₂/CC催化剂具有更高的脱硝活性。表面Mn活性位和弱酸位多是MnN/TiO₂/CC催化剂低温SCR活性好的主要原因。

关键词: 低温, 脱硝, 堇青石蜂窝陶瓷基体, 锰

Abstract: Monolithic Mn catalysts were prepared by two different Mn precursors (manganese nitrate and manganese acetate), and these catalysts were characterized by BET, XRD, XPS and NH₃-SCR.The catalyst prepared by manganese nitrate has higher low-temperature de NO_x activity than that prepared by manganese acetate.The de NO_x efficiency of MnN/TiO₂/CC catalyst was close to 100% in the reaction temperature between 150℃ and 250℃. However, when the reaction temperature was above 250℃, the activity of MnA/TiO₂/CC catalyst was better than MnN/TiO₂/CC catalyst.Characterization results showed that higher surface Mn concentration and weak acids were found on MnN/TiO₂/CC catalyst.

Key words: low temperature, deNO_x, cordierite ceramic honeycomb, manganese

王学海, 吴昊, 刘忠生. 整体式Mn基低温脱硝催化剂研究[J]. 化工进展, 2015, 34(s1): 127-130.

WANG Xuehai, WU Hao, LIU Zhongsheng. Performance of monolithic Mn catalyst for low temperature SCR[J]. Chemical Industry and Engineering Progree, 2015, 34(s1): 127-130.

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