汞氧化催化剂研究进展  

RESEARCH PROGRESS OF MERCURY OXIDATION CATALYSTS

作　　者：史建强 王兵[1] 陈建军[2] 王建成[1,3] 李俊华 SHI Jianqiang;WANG Bing;CHEN Jianjun;WANG Jiancheng;LI Junhua(State Key Laboratory of Clean and Efficient Coal Utilization,Key Laboratory of Coal Science and Technology,Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China;School of Environment,Tsinghua University,Beijing 100084,China;School of Environmental Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学省部共建煤基能源清洁高效利用国家重点实验室煤科学与技术教育部重点实验室,太原030024 [2]清华大学环境学院,北京100084 [3]太原理工大学环境科学与工程学院,太原030024

出　　处：《环境工程》2024年第9期229-239,共11页Environmental Engineering

基　　金：国家自然科学基金“纳米铜掺杂锰氧分子筛活性位点调控及其天然气湿气脱汞和再生性能研究”(22078225)。

摘　　要：在全球环境问题日益突出,尤其是对大气汞污染控制的高度重视下,科研人员在针对燃煤烟气及其他工业排放中单质汞(Hg^(0))脱除技术的研究上取得了显著进步。其中,Hg^(0)氧化催化剂扮演着核心角色,通过催化转化Hg^(0)为易于捕集和处理的二价汞化合物,有效降低了大气中汞排放。尽管该方面已有一定的研究成果,但设计与开发新型高效、稳定且适应复杂工况条件的Hg^(0)氧化催化剂,当前仍面临诸多挑战。系统梳理了Hg^(0)控制技术和几种主要的Hg^(0)氧化催化剂类型(包括分子筛、钙钛矿、贵金属催化剂、过渡金属氧化物和钒基SCR催化剂)、特性和优缺点。并深入探讨了Hg^(0)氧化过程的可能机理,包括均相和多相氧化机制,以及影响Hg^(0)氧化性能的关键因素。该研究结果丰富了汞污染防治的理论基础,也为未来设计更加高效实用的Hg^(0)氧化催化剂提供了参考。With the increasingly prominent global environmental issues,especially the high attention paid to controlling atmospheric mercury pollution,researchers have made significant progress in research on the removal technology of elemental mercury(Hg^(0))from coal-fired flue gas and other industrial emissions.Among them,mercury oxidation catalysts play a core role,effectively reducing atmospheric mercury emissions by catalyzing the conversion of Hg^(0) into divalent mercury compounds that are easy to capture and treat.Although there have been certain research achievements,the design and development of new efficient,stable,and adaptable Hg^(0) oxidation catalysts still face many challenges presently.This article systematically reviews Hg^(0) control technology and several main types of Hg^(0) oxidation catalysts,including molecular sieves,perovskites,precious metal catalysts,transition metal oxides,and vanadium-based SCR catalysts.A detailed description of the characteristics,advantages and disadvantages of various Hg^(0) oxidation catalysts is given.In addition,the article delves into the possible mechanisms of mercury oxidation,including homogeneous and multiphase oxidation mechanisms,as well as key factors affecting mercury oxidation performance.This review not only enriches the theoretical foundation of mercury pollution prevention and control,but also provides guidance for more efficient and practical Hg^(0) oxidation catalysts design in the future.

关 键 词：元素汞 控制技术 催化氧化 工业烟气 反应机理 

分 类 号：X701[环境科学与工程—环境工程]