[1]姚杰,仲兆平,赵金笑.不同方式合成纳米TiO2载体在SCR脱硝催化剂制备中的应用[J].东南大学学报(自然科学版),2012,42(4):685-690.[doi:10.3969/j.issn.1001-0505.2012.04.021]
 Yao Jie,Zhong Zhaoping,Zhao Jinxiao.Nano-TiO2 preparaed from different ways and application in SCR DeNOx catalyst[J].Journal of Southeast University (Natural Science Edition),2012,42(4):685-690.[doi:10.3969/j.issn.1001-0505.2012.04.021]
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不同方式合成纳米TiO2载体在SCR脱硝催化剂制备中的应用()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
42
期数:
2012年第4期
页码:
685-690
栏目:
环境科学与工程
出版日期:
2012-07-20

文章信息/Info

Title:
Nano-TiO2 preparaed from different ways and application in SCR DeNOx catalyst
作者:
姚杰 仲兆平 赵金笑
东南大学能源热转换及其过程测控教育部重点实验室, 南京 210096
Author(s):
Yao Jie Zhong Zhaoping Zhao Jinxiao
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University,Nanjing 210096, China
关键词:
纳米TiO2 载体 SCR脱硝催化剂 超声
Keywords:
nano-TiO2 carrier SCR(selective catalytic reduction)DeNOx catalyst ultrasound
分类号:
X505
DOI:
10.3969/j.issn.1001-0505.2012.04.021
摘要:
通过不同方式合成纳米TiO2,并以此为载体负载活性物质制得1%V2O5-10%WO3/TiO2的SCR脱硝催化剂.纳米TiO2制备方式包括溶胶凝胶法、TiCl4水解法、直接沉淀及均相沉淀法.试验结果表明,用这4种方法制备得到的TiO2均为锐钛型,以均相沉淀法合成的纳米TiO2为载体制得的催化剂具有较高的比表面积及脱硝性能,并表现出明显的活性温度窗口.进一步引入超声作用优化均相沉淀反应条件,结果表明,相比同类型传统方法,超声均相沉淀工艺能够明显提高纳米TiO2产品的比表面积与分散度,缩小二次颗粒尺寸,并使得所制备催化剂脱硝性能得到显著提高,且具有较好的抗水、抗硫特性.
Abstract:
Nano-TiO2 materials were prepared from different ways, which were then used as carriers for preparation of SCR(selective catalytic reduction)DeNOx catalyst by incipient impregnation. Those catalysts were composed of 1%V2O5-10%WO3/TiO2 uniformly. The choosed synthesization ways for nano-TiO2 preparation included sol-gel method, hydrolysis of TiCl4, direct precipitation and homogeneous precipitation. Analysis results show that TiO2 from these 4 methods are all anatase-TiO2,among which the TiO2 and catalyst samples prepared from homogeneous precipitation exhibit relatively higher BET(Brunauer Emmett Teller)specific surface area and DeNOx catalytic activity, and the catalyst shows a stable activity temperature window. Furthermore, ultrasonic treatment was introduced into homogeneous precipitation to optimize reaction condition. And the results show that compared with conventional method, the ultrasound process can significantly improve BET specific surface area and dispersion of resultant TiO2, and reduce the diameter of second particle. Accordingly the activity of SCR DeNOx catalyst can be enhanced obviously with high antitoxic property for SO2 and H2O.

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相似文献/References:

[1]徐春宁.西北的色彩[J].东南大学学报(自然科学版),1996,26(6):132.[doi:10.3969/j.issn.1001-0505.1996.06.026]
 Xu Chunning.Color of the Northwest of China[J].Journal of Southeast University (Natural Science Edition),1996,26(4):132.[doi:10.3969/j.issn.1001-0505.1996.06.026]

备注/Memo

备注/Memo:
作者简介: 姚杰(1986—),男,博士生; 仲兆平(联系人),男,博士,教授,博士生导师,zzhong@seu.edu.cn.
基金项目: 江苏省科技支撑计划资助项目(BE2010184)、江苏省环保科研课题资助项目(201031).
引文格式: 姚杰,仲兆平,赵金笑,等.不同方式合成纳米TiO2载体在SCR脱硝催化剂制备中的应用[J].东南大学学报:自然科学版,2012,42(4):685-690. [doi:10.3969/j.issn.1001-0505.2012.04.021]
更新日期/Last Update: 2012-07-20