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毕业论文网 > 任务书 > 理工学类 > 能源与环境系统工程 > 正文

载体硫酸根含量变化对钒钛催化剂脱硝活性影响任务书

 2020-04-17 16:31:55  

1. 毕业设计(论文)的内容和要求

传统的商业烟气脱硝催化剂为钒钨钛催化剂,其以二氧化钛为载体,五氧化二钒为主要的活性组分,三氧化钨为助催化剂。

工业二氧化钛载体俗称钛白粉,基于现在的硫酸法钛白粉制造工艺,作为脱硝催化剂载体的二氧化钛中含有一定量的硫酸根,而硫酸根的存在对钒钛催化剂表面活性组分的分散以及催化剂脱硝活性的影响尚不清楚。

本课题通过对载体进行洗涤,改变原料中硫酸根含量,制备不同活性组分含量的钒钛催化剂,借助活性测试,硫水抗性测试及表征分析,判断载体硫酸根含量对产品催化剂脱硝性能的影响。

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2. 参考文献

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Combination of V2O5/WO3#8722;TiO2, Fe#8722;ZSM5, and Cu#8722;ZSM5 catalysts for the selective catalytic reduction of nitric oxide with ammonia[J]. Industrial Engineering Chemistry Research, 2008, 47(22): 8588-8593. [18]司知蠢. CuOx/WOx-ZrO2催化剂制备及其NH3-SCR催化机理研究[D]. 博士学位论文, 北京: 清华大学, 2010. [19]马朝霞. 氧化铜基催化剂选择性催化还原氮氧化物研究[D]. 博士学位论文, 杭州: 浙江大学, 2015. [20] Cheng K, Liu J, Zhang T, et al. Effect of Ce doping of TiO2 support on NH3-SCR activity over V2O5#8211;WO3/CeO2#8211;TiO2 catalyst[J]. Journal of Environmental Sciences, 2014, 26(10): 2106-2113. [21] Heon P H, Soon H C, Young J O. Selective catalytic NOx reduction on Antimony promoted V2O5-Sb/TiO2 catalyst[J]. Rare Metals, 2006, 25(6): 84-88. [22] Kwon D W, Hong S C. Enhancement of performance and sulfur resistance of ceria-doped V/Sb/Ti by sulfation for selective catalytic reduction of NOx with ammonia[J]. RSC Advances, 2016, 6(2): 1169-1181. [23] Lee K J, Kumar P A, Maqbool M S, et al. 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3. 毕业设计(论文)进程安排

1、第1~2周:完成开题报告和外文翻译工作,熟悉催化剂的制备过程,能够独立制备颗粒催化剂; 2、第3~4周:完成不同载体、不同活性组分负载量的脱硝催化剂制备; 3、第5~6周:进行制备的脱硝催化剂活性测试,对比不同催化剂性能差别; 4、第7~8周:选择低温脱硝活性较好的催化剂,对比不同载体催化剂样品的H2O、SO2抗性差异; 5、第9~10周:学习催化剂表征技术相关知识,联系、落实不同的催化剂表征工作; 6、第11~12周:完成催化剂表征工作,解析催化剂性能与结构性质的关系; 7、第13~14周:撰写毕业论文。

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