| La0.8Sr0.2MnO3 MgAl2O4丝网蜂窝催化剂用于低浓度甲烷催化燃烧 |
| |
| 引用本文： | 王忍青,段伟杰,黄波,江志东. La0.8Sr0.2MnO3 MgAl2O4丝网蜂窝催化剂用于低浓度甲烷催化燃烧[J]. 精细化工, 2019, 36(2) |
| |
| 作者姓名： | 王忍青 段伟杰 黄波 江志东 |
| |
| 作者单位： | 上海交通大学化学化工学院;上海市绝缘与老化重点实验室 |
| |
| 摘 要： | 首先,采用沉积-沉淀法制备了与镁铝尖晶石(Mg Al2O4,简称MA)载体复合的镧锶锰钙钛矿(La_(0.8)Sr_(0.2)MnO_3,简称LSM)催化剂LSMn,考察了MA与LSM的物质的量比(n)、前驱体老化和焙烧温度系列制备条件的影响,在程序升温微反应器中测试了LSMn粉体对低浓度甲烷催化燃烧反应的活性,并用FTIR、H2-TPR、BET、XRD和SEM手段对催化剂进行表征。结果表明:在10℃老化和800℃下焙烧的LSM4性能最佳,T50为489.4℃,活化能Ea=112.5 kJ/mol,BET比表面积仍有81.6 m2/g,表现出较好的抗烧结性能。然后,用浆料涂覆法依次将第二载体(MA)和LSM4粉体涂覆在Fe-Cr-Al合金丝网上制得了丝网蜂窝催化剂。考察了第二载体及LSM/4MA粉体涂覆量的影响,在空速40000 h–1条件下测试了蜂窝催化剂的活性,结果表明,MA的最佳涂覆厚度约20mm,LSM/4MA的最佳涂覆量约为2.65 mg/cm2,甲烷转化率30%以上。
|
| 关 键 词： | 沉积-沉淀法 镧锶锰钙钛矿 Mg Al2O4尖晶石 抗烧结 丝网蜂窝催化剂 |
| 收稿时间： | 2018-09-06 |
| 修稿时间： | 2018-10-23 |
Development and Application of La0.8Sr0.2MnO3/MgAl2O4 wire-mesh honeycombs in catalytic combustion of air diluted methane |
| |
| WANG Ren-qing,Duan Wei-jie,Huang Bo and Jiang Zhi-dong. Development and Application of La0.8Sr0.2MnO3/MgAl2O4 wire-mesh honeycombs in catalytic combustion of air diluted methane[J]. Fine Chemicals, 2019, 36(2) |
| |
| Authors: | WANG Ren-qing Duan Wei-jie Huang Bo Jiang Zhi-dong |
| |
| Affiliation: | Shanghai key lab of insulation and thermal aging, school of chemistry and chemical engineering, Shanghai Jiao Tong University, Shanghai 200240, China,Shanghai key lab of insulation and thermal aging, school of chemistry and chemical engineering, Shanghai Jiao Tong University, Shanghai 200240, China,Shanghai key lab of insulation and thermal aging, school of chemistry and chemical engineering, Shanghai Jiao Tong University, Shanghai 200240, China |
| |
| Abstract: | |
| |
| Keywords: | deposition-precipitation La0.8Sr0.2MnO3 perovskite MgAl2O4 spinel sintering resistant wire-mesh honeycomb |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《精细化工》浏览原始摘要信息 |
|
点击此处可从《精细化工》下载全文 |
|
