| 引用本文: | 庄凤来,刘少光,林文松,陈焱,陈成武.Nb-Re-W/Ti无毒催化剂的脱硝性能研究[J].材料科学与工艺,2017,25(5):93-96.DOI:10.11951/j.issn.1005-0299.20160322. |
| ZHUANG Fenglai,LIU Shaoguang,LIN Wensong,CHEN Yan,CHEN Chengwu.De-NOx performance of non-toxic Nb-Re-W/Ti catalyst[J].Materials Science and Technology,2017,25(5):93-96.DOI:10.11951/j.issn.1005-0299.20160322. |
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| Nb-Re-W/Ti无毒催化剂的脱硝性能研究 |
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庄凤来1,刘少光1,2,3,林文松1,陈焱3,4,陈成武3,4
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(1.上海工程技术大学 材料工程学院, 上海 201620; 2.浙江大学 材料科学与工程学院, 杭州 310027; 3.上海瀚昱环保材料有限公司, 上海 201611; 4.浙江科得力新材料有限公司, 浙江 温州 325029)
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| 摘要: |
| 为满足大气污染治理的严格要求，改进商用V2O5-WO3/TiO2脱硝催化剂有毒的弊端，提高催化剂的脱硝效率，本文采用挤出成型法制备蜂窝状Nb-Re-W/Ti(Re=Pr, Nd)无毒催化剂，在模拟烟气脱硝试验装置上进行脱硝活性测试，利用XPS和H2-TPR等表征手段对催化剂进行分析，就Nb和稀土元素的负载量对催化剂脱硝性能的影响进行探讨.研究结果表明：Nb-W/Ti催化剂中Nb最佳负载量为2.8%，最佳反应温度为350 ℃，NOx转化率最高可以达到95%；当Nb负载量为1.1%时，分别加入1.5%Pr和2.0%Nd后，催化剂的脱硝效率均能达到98%以上.
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| 关键词: Nb 稀土 NOx 无毒催化剂 SCR |
| DOI：10.11951/j.issn.1005-0299.20160322 |
| 分类号:O643.36 |
| 文献标识码:A |
| 基金项目: |
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| De-NOx performance of non-toxic Nb-Re-W/Ti catalyst |
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ZHUANG Fenglai1, LIU Shaoguang1,2,3, LIN Wensong1,CHEN Yan3,4, CHEN Chengwu3,4
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(1.School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China; 2.School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China; 3.Shanghai Hanyu Environmental Protection Material Co.LTD, Shanghai 201611,China; 4. Zhejiang Cadre New Material Co.LTD, Wenzhou 325029, China)
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| Abstract: |
| The requirements of air pollution control is becoming more and more strict, to improve the toxicity of commercial V2O5-WO3/TiO2 catalyst and increase the denitration efficiency of catalyst, Nb-Re-W/Ti(Re=Pr, Nd) non-toxic catalysts were prepared by extrusion technology. Activities of the obtained catalysts were measured by simulated flue gas. Properties of the catalysts were characterized by X-ray Photoelectron Spec-troscopy and H2 temperature-programmed reduction. Performance of the catalysts affected by Nb and rare earth were studied. The results show that optimal loading of Nb is 2.8%, optimal reaction temperature is 350 ℃, and the highest de-NOx efficiency is 95%. 1.5% Pr or 2.0% Nd doped on the 1.1% Nb-W/Ti could strengthen the catalytic properties significantly, and the NOx removal efficiency was higher than 98%.
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| Key words: Nb, rare earth NOx, non-toxic catalyst, SCR |
