中国电机工程学报Issue(3)：623-630,8.DOI:10.13334/j.0258-8013.pcsee.2015.03.015
一种改性选择性催化还原催化剂及其对零价汞的催化氧化性能
A Modified Selective Catalytic Reduction Catalyst and Its Catalytic Oxidation for Hg0
摘要
Abstract
A CuCl2 modified selective catalytic reduction (SCR) catalyst (CuCl2/SCR) was prepared by impregnation method. The catalyst was characterized by (X-ray diffractometer (XRD), X-ray fluorescence (XRF) and other techniques, and its catalytic activity for Hg0 oxidation was also evaluated on a homemade laboratory bench by using simulated flue gas. It was found that the CuCl2/SCR catalyst can release active chlorine in a reversible way at high temperature in the presence of HCl and O2. Embedding CuCl2 into SCR catalyst improves significantly the catalytic activity for Hg0 oxidation of the catalyst in the flue gas with low chlorine contents. For the CuCl2/SCR catalyst the Hg0 oxidation efficiency increases with the HCl content in the flue gas and the CuCl2-loaded amount of the catalyst. NH3 and SO2 can inhibit Hg0 adsorption on the catalyst surface, which results in a slight decrease in the catalytic activity of CuCl2/SCR catalyst. However, it still shows high catalytic oxidation for Hg0, and the catalytic mechanism belong Mars-Maessen mode. The prepared catalyst also exhibits high denitration activity, therefore it can be used for simultaneous removal of NO and Hg in the flue gas with low chlorine contents.关键词
改性选择性催化还原(SCR)催化剂/氯化铜/制备/零价汞氧化/机制Key words
modified selective catalytic reduction (SCR) catalyst/copper chloride/preparation/Hg0 oxidation/mechanism分类
化学化工引用本文复制引用
程广文,张强,白博峰..一种改性选择性催化还原催化剂及其对零价汞的催化氧化性能[J].中国电机工程学报,2015,(3):623-630,8.基金项目
中国博士后科学基金(2013M542372)；中国华能集团科学项目(HNKJ13-H01-04)。@@@@China Postdoctoral Science Foundation (2013M542372) （2013M542372）
Project Supported by China Huaneng Group (HNKJ13-H01-04) （HNKJ13-H01-04）
