Cu-SAPO-CHA分子筛的合成及性能测试  

In situ Synthesis of Cu-SAPO-CHA Zeolite and Capability Testing

作　　者：叶子菁 吴碧霞 郭一棱 李彬 黄丁豪 王若剑 边超群 盛柳青[1] 罗小会[1] YE Zijing;WU Bixia;GUO Yiling;LI Bin;HUANG Dinghao;WANG Ruojian;BIAN Chaoqun;SHENG Liuqing;LUO Xiaohui(Jinhua Polytechnic,Zhejiang Jinhua 321000)

机构地区：[1]金华职业技术学院,浙江金华321000

出　　处：《生物化工》2021年第6期99-101,共3页Biological Chemical Engineering

基　　金：2019年度国家自然基金青年项目(21902065);2019年度金华市科技局计划项目(2019-4-165);2021年度金华市科技局计划项目(2021-4-333)。

摘　　要：氮氧化物是大气中的主要空气污染物之一,氮氧化物排放已被纳入国家标准。因此,柴油车尾气的处理技术越来越受到关注。CHA分子筛一直被认为是氨选择性催化还原反应的高效催化剂。Cu-CHA分子筛由于其优秀的水热稳定性和高的NO转化率,一直受到关注。以白炭黑、吗啡啉、氯化铜、薄水铝石和磷酸二氢铵为原料,利用固相合成方法原位合成Cu-SAPO-34分子筛,用X射线衍射仪、扫描电子显微镜等手段对其表征并进行NH_(3)-SCR性能测试。结果表明,该方法制得的Cu-SAPO-34分子筛具有较好的氨催化效果。As one of the main air pollutants in the atmosphere,nitrogen oxide emissions have been included in the national standard.Therefore,treatment technologies for efficiently removing exhaust gas from diesel vehicles have attracted increasing attention.CHA zeolite has always been considered as a high-efficiency molecular sieve for the elimination of nitrogen oxides by ammonia-selective catalytic reduction(NH_(3)-SCR).Cu-SAPO-34 zeolite,as a CHA molecular sieve,has attracted attention due to its good hydrothermal stability and high NO conversion.In this thesis,a solid synthesis method is used to synthesize Cu-SAPO-34 molecular sieve in situ by one-step method with silica,morpholine,copper chloride,boehmite and ammonium dihydrogen phosphate as raw materials.X-ray diffractometer,scanning electron microscope are carried out on the synthesized samples and NH_(3)-SCR performance test shows a good catalytic effect.

关 键 词：NH -SCR Cu-SAPO-34分子筛 氮氧化物消除 

分 类 号：X701[环境科学与工程—环境工程]