| Mo掺杂Ce/石墨烯（GE）催化剂的制备及脱硝性能 | |
| Mo-Doped Ce/GE Catalyst for Selective Catalytic Reduction of NOx by NH3 | |
| 摘要: 采用浸渍法制备了不同负载量Mo掺杂Ce/GE催化剂，对其脱硝性能进行了测试，初步探明了Mo掺杂Ce/GE催化剂促进SCR活性增强的内在机制。结果表明，Mo的添加使nCe3+/（nCe3++nCe4+）比率增加、表面吸附氧（Oβ）含量增加及催化剂酸性位点增加，从而提高催化剂的脱硝活性。与5Ce/GE和5Mo/GE相比，5Ce-5Mo/GE催化剂脱硝性能更加优异。当Mo负载量为5%时，催化剂脱硝活性最好，在250℃时NOx转化率达到了99%。此外，5Ce-5Mo/GE催化剂具有较好的抗硫性能。 | |
| 关键词: 氮氧化物 选择性催化还原 石墨烯 Ce Mo | |
| 基金项目: 国家自然科学基金（No.51708309），黑龙江省自然科学基金（No.QC2017065），黑龙江省教育厅基本科研业务专项（No.135109303，135109103），黑龙江省教育厅“植物性食品加工技术特色学科”专项（No.YSTSXK201872），齐齐哈尔市科委（No.GYGG-090013-1）和齐齐哈尔大学创新创业计划资助项目。 | |
| Abstract: Mo-doped Ce/GE catalysts with different loading amounts were prepared by impregnation method, which were examined as catalysts in the selective catalytic reduction of NOx by NH3(NH3-SCR). Furthermore, the intrinsic mechanism of Mo-doped Ce/GE catalysts for enhancing SCR activity was preliminarily investigated. It was found that the addition of Mo can increase the ratio of nCe3+/(nCe3++nCe4+), the oxygen content on the surface and the acid sites of the catalyst, thus enhancing SCR activity. Compared with 5Ce/GE and 5Mo/GE, 5Ce-5Mo/GE catalyst showed more outstanding catalytic activity. In addition, the catalyst exhibited the best activity and almost 99% conversion of NOx at 250℃, when the loading amount is 5%. 5Ce-5Mo/GE catalyst exhibited good sulfur resistance performance. | |
| Keywords: nitrogen oxide selective catalytic reduction graphene Ce Mo | |
| 投稿时间：2018-06-20 修订日期：2018-09-22 | |
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| 李鹏,李智芳,耿翠,康燕,张超,杨长龙.Mo掺杂Ce/石墨烯（GE）催化剂的制备及脱硝性能[J].无机化学学报,2018,34(12):2205-2210. | |
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