| 窦生平,赵炜,张凯,李昌烽.Nd掺杂V2O5/TiO2低温NH3选择性催化还原NOx性能研究[J].分子催化,2019,33(1):50-57 |
| Nd掺杂V2O5/TiO2低温NH3选择性催化还原NOx性能研究 |
| Catalytic Performance Research of Nd-doped V2O5/TiO2 for Low-temperature Selective Reduction of NOx with NH3 |
| 投稿时间：2018-11-12 修订日期：2018-12-28 |
| DOI： |
| 中文关键词: 选择性催化还原(SCR) 煅烧温度 O2含量 氨氮比 |
| 英文关键词:selective catalytic reduction (SCR) calcination temperature O2 content [NH3/NO] |
| 基金项目:江苏省研究生科研与实践创新计划项目（SJCX17_0572）；国家自然科学基金资助项目（51506077）；江苏省自然科学基金资助项目（BK20150488）；江苏省高校自然科学基金（15KJB430007） |
|
| 摘要点击次数: 1233 |
| 全文下载次数: 1623 |
| 中文摘要: |
| 采用溶胶凝胶法和浸渍法制备了Nd掺杂V2O5/TiO2催化剂.用XRD和Raman技术对其晶相结构和分散性进行了表征，并在固定床反应器上评价了其催化活性.然后考察了煅烧温度对催化剂脱硝性能的影响，结合XRD表征结果可知煅烧温度没有改变TiO2的晶型，只影响了其结晶度.同时氮气吸脱附表征及BET计算结果显示350℃煅烧时催化剂比表面积最大.研究了O2浓度以及氨氮比对催化剂脱硝性能的影响.同时考察了Nd掺杂催化剂的稳定性，发现Nd改性催化剂有较好的稳定性.并对Nd掺杂催化剂做了抗硫抗水考察，研究结果表明，Nd掺杂催化剂有较好的耐硫耐水性. |
| 英文摘要: |
| The Nd-doped V2O5/TiO2 catalysts were prepared by sol-gel method and impregnation method. The crystal structure and dispersibility of the catalysts were characterized by XRD and Raman techniques, and their catalytic activities were evaluated on a fixed bed reactor. The effect of calcination temperature on the denitration performance of the catalyst was investigated. According to the XRD characterization results, the calcination temperature did not change the crystal form of TiO2, which only affected its crystallinity. Meanwhile, the N2 adsorption-desorption characterization and BET results showed that the specific surface area is the largest when calcined at 350℃. Then the effects of O2 concentration and ammonia-nitrogen ratio on the denitration performance of the catalyst were studied. At the same time, the stability of Nd-doped catalyst was investigated. It was found that Nd modified catalyst has good stability. The sulfur and water-resistance of Nd-doped catalysts were investigated. The results showed that the Nd-doped catalysts have good sulfur and water resistance. |
| HTML 查看全文 查看/发表评论 下载PDF阅读器 |
