石煤提钒尾渣制备SCR脱硝催化剂的研究
Preparation of SCR catalysts from vanadium tailings of stone coal
为了解决石煤矿提钒过程中产生的大量石煤提钒尾渣严重污染环境问题，提出了以石煤提钒尾渣作为基底原料，用SiO2、TiO2溶胶改性其表面结构和酸碱性，通过浸渍法负载活性组分MnO2和催化助剂 MoO3制备了选择性还原（SCR）脱硝催化剂。采用脱硝性能测试、N2吸附-脱附、X射线衍射（XRD）、X射线光电子能谱（XPS）技术对催化剂的结构和性能进行了表征。研究结果表明：硅溶胶改性后的13Mn-2Mo/15SSi催化剂有良好的脱硝活性，在210-370℃范围内NO转换率均超过了90%。同时该方法制备的催化剂相较原渣提升了比表面积、活性组分分散度，且具有丰富的表面吸附氧Oα。该研究减少了资源浪费和环境污染，为石煤提钒尾渣的废物利用提供了新的解决途径。
In order to solve the problem of serious environmental pollution of a large number of stone coal vanadium extraction tailings produced in the process of vanadium extraction in stone coal mines, It is proposed to use stone coal vanadium tailings as the base raw material, The surface structure and acidity and alkalinity were modified by SiO2 and TiO2 sols，Its catalytically active components are regulated with MnO2 and MoO3. The BET、XRD、and XPS technology were used to study the properties of the catalyst. The results show that Catalyst 13Mn-2Mo/15SSi, Its maximum NO removal ratio were over 90%. At the same time, the catalyst prepared by this method has a large specific surface area、highly dispersed active component and rich surface adsorption oxygen Oα. The study reduced waste of resources and environmental pollution, it provides a new idea for the utilization of vanadium tailings from stone coal.
杜军、孙华蓉、付俊
废物处理、废物综合利用有色金属冶炼无机化学工业
石煤提钒尾渣NH3-SCR催化剂溶胶改性
Vanadium tailings of stone coalNH3-SCR catalystsol modified
杜军,孙华蓉,付俊.石煤提钒尾渣制备SCR脱硝催化剂的研究[EB/OL].(2023-03-03)[2025-08-22].http://www.paper.edu.cn/releasepaper/content/202303-42.点此复制
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