Properties of sulfation supported V/Ti denitration catalyst

LI Junjie; MU Yang; YANG Juan; YU Jian; DUAN Zhengkang; XU Guangwen; XIONG Beichen

doi:10.3969/j.issn.0438-1157.2013.04.018

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Properties of sulfation supported V/Ti denitration catalyst

更新时间：2025-12-10

- Properties of sulfation supported V/Ti denitration catalyst
- CIESC Journal Issue 4, Pages: 1249-1255(2013)
- 作者机构：
  
  1. 中国科学院过程工程研究所多相复杂系统国家重点实验室,北京,100190
  2. 湘潭大学化工学院,湖南,湘潭,411105
  3. 沈阳化工大学化学工程学院,辽宁,沈阳,110142
  4. 北京十一学校,北京,100170
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.04.018
  CLC： Q426.6
- Online First：05 April 2013，
  
  Published：05 April 2013
- 稿件说明：
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LI Junjie, MU Yang, YANG Juan, et al. Properties of sulfation supported V/Ti denitration catalyst[J]. CIESC Journal, 2013, (4): 1249-1255.
DOI：

LI Junjie, MU Yang, YANG Juan, et al. Properties of sulfation supported V/Ti denitration catalyst[J]. CIESC Journal, 2013, (4): 1249-1255. DOI： 10.3969/j.issn.0438-1157.2013.04.018.

摘要

以商业TiO2为载体

采用浸渍法制备了V2O5-WO3-TiO2/SO42-催化剂

考察了硫酸酸化载体TiO2的顺序及硫酸酸化量对氨气选择性催化还原NO活性的影响

采用XRD、BET、FT-IR、TG-DTA、TPD等手段对催化剂进行了表征。BET表征结果表明

随着酸化处理的用酸量增大

催化剂表面积降低;但FT-IR、TG结果表明

增大酸化处理用硫酸量提高了硫酸根与钨之间的电子交互作用。程序升温的活性测试结果表明

硫酸酸化处理对催化剂活性具有促进作用

结合NH3-TPD表征证实了具有酸化处理程序制备的催化剂可以增强表面酸性位

从而使催化剂具有高活性。

Abstract

A series of V2O5-WO3-TiO2/SO42- catalysts were prepared with the impregnation method using nano-TiO2 support sulfated according to three different orders of sulfating TiO2 support and with different acid amounts.Characterization of the catalysts with XRD

BET

FT-IR and TG-DTG showed that sulfating the catalyst support decreased the specific surface area of the resulting catalyst but did not vary its crystal form.Sulfation caused as well strong interactions between WO3 and the sulfate of the loaded active component.Temperature-programmed activity tests demonstrated further that sulfation increased catalytic activity by increasing the acidity of the catalyst at 120—400℃.This was confirmed also with NH3-TPD for the prepared V/Ti denitration catalysts.

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