焙烧温度对MgO/ZrO_(2)固体碱低温催化氧化NO性能的影响  

Influence of calcination temperature on catalytic performance of MgO/ZrO_(2)solid base for oxidation of NO at low temperature

作　　者：何人广 李秋瑾 赵光垒 贾丽娟 刘天成 HE Ren-guang;LI Qiu-jin;ZHAO Guang-lei;JIA Li-juan;LIU Tian-cheng(Yunnan Provincial Higher Educational Technology Innovation Team in Green Purification Technology for Industrial Waste Gas,National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials,School of Chemistry and Environment,Yunnan Minzu University,Kunming 650504,China)

机构地区：[1]云南民族大学化学与环境学院,云南省高校工业废气绿色净化技术科技创新团队,生物基材料绿色制备技术国家地方联合工程研究中心,云南昆明650504

出　　处：《现代化工》2023年第6期118-121,128,共5页Modern Chemical Industry

基　　金：国家自然科学基金(51568068);中青年学术和技术带头人后备人才项目(202105AC160054)。

摘　　要：采用共沉淀法制备了微孔MgO/ZrO_(2)固体碱催化剂,考察了焙烧温度对催化剂催化氧化NO效率的影响,利用N2吸附/脱附、XRD、SEM及FT-IR对催化剂结构进行表征。结果表明,催化氧化NO的反应温度为150℃时,400℃焙烧的催化剂催化氧化NO的转化率达到了94.25%。焙烧温度为400℃时,催化剂的比表面积为214.52 m^(2)/g、平均孔径为1.88 nm、孔体积为0.2156 cm^(3)/g,并且其表面颗粒分散性好,使催化剂能与NO充分接触,利于催化氧化NO。Microporous MgO/ZrO_(2)solid base catalyst is prepared via co-precipitation method.The effect of calcination temperature on catalytic efficiency of the catalyst for oxidation of NO is studied.The structure of catalyst is characterized by means of N2 adsorption/desorption,XRD,SEM and FT-IR.Results show that the conversion rate of NO reaches 94.25%when the reaction temperature is 150℃for catalytic oxidation of NO,and MgO/ZrO_(2)calcined at 400℃is served.MgO/ZrO_(2)prepared at a calcination temperature of 400℃has a specific surface area of 214.52 m^(2)·g^(-1),an average pore diameter of 1.88 nm,a pore volume of 0.2156 cm^(3)·g^(-1),and a good particle dispersibility on its surface.The catalyst can fully contact with NO,which is beneficial to catalytic oxidation of NO.

关 键 词：MgO/ZrO_(2) 固体碱 焙烧温度 催化氧化 NO 

分 类 号：TQ426[化学工程] X701[环境科学与工程—环境工程]