In situ preparation of mesoporous V2O5-WO3/TiO2 catalyst by sol-gel method and its performance for NH3-SCR reaction

GUO Feng; YU Jian; TRAN Tuyet-Suong; LI Changming; XU Guangwen

doi:10.11949/j.issn.0438-1157.20170434

您当前的位置：

首页 >

文章列表页 >

In situ preparation of mesoporous V₂O₅-WO₃/TiO₂ catalyst by sol-gel method and its performance for NH₃-SCR reaction

更新时间：2025-12-10

- In situ preparation of mesoporous V₂O₅-WO₃/TiO₂ catalyst by sol-gel method and its performance for NH₃-SCR reaction
- CIESC Journal Issue 10, Pages: 3747-3754(2017)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20170434
  CLC： 643
- Online First：05 October 2017，
  
  Published：05 October 2017
- 稿件说明：
移动端阅览
GUO Feng, YU Jian, TRAN Tuyet-Suong, et al. In situ preparation of mesoporous V₂O₅-WO₃/TiO₂ catalyst by sol-gel method and its performance for NH₃-SCR reaction[J]. CIESC Journal, 2017, (10): 3747-3754. DOI: 10.11949/j.issn.0438-1157.20170434.
DOI：

GUO Feng, YU Jian, TRAN Tuyet-Suong, et al. In situ preparation of mesoporous V₂O₅-WO₃/TiO₂ catalyst by sol-gel method and its performance for NH₃-SCR reaction[J]. CIESC Journal, 2017, (10): 3747-3754. DOI: 10.11949/j.issn.0438-1157.20170434. DOI：

摘要

利用溶胶-凝胶技术原位合成V2O5-WO3/TiO2介孔结构脱硝催化剂。通过XRD、BET、SEM和XPS等手段对催化剂结构与组成进行表征，发现结构导向剂CTAB促进催化剂的比表面积和孔容的增加，促进催化剂活性组分的分散与裸露的V活性组分数量增加；且随CTAB含量的增加，V4+/V5+的比值降低，即降低了催化剂表面钒物种的氧化能力，有利于提高催化剂的低温脱硝活性与高温选择性。催化活性评价结果表明，CTAB对催化剂的脱硝活性有显著促进作用，当CTAB的添加量为0.01（质量）时，催化剂的脱硝活性大于90%的温度窗口最宽为212~393℃，200℃时脱硝效率达85.6%。

Abstract

A series of V2O5-WO3/TiO2 catalysts were prepared by the in situ sol-gel method with different amounts of cetyl trimethyl ammonium bromide (CTAB) as structure-directing agent.The XRD

BET

SEM and XPS were performed to characterize the catalysts.The results demonstrated that the introduction of CTAB facilitated the formation of mesoporous structure with increased specific surface area and pore volume

resulting in the high dispersion of active components and thus more bared V2O5 on the surface of support.Moreover

the ratios of V4+/V5+ decrease with the increase of CTAB content

which reduce the oxidation capacity of the surface vanadium species and enhance the low-temperature activity together with the high-temperature selectivity.The results of activity evaluation indicate that the introduction of CTAB obviously promote the catalytic performance

and CTAB-0.01 catalyst has the highest low-temperature denitration activity (85.6% NO conversion at 200℃) and the widest temperature window (above 90% NO conversion from 212℃ to 393℃).

关键词

Keywords

references

Views

147

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Construction of transition metal-based nitrogen-doped carbon and their desulfurization performance

Hydrolysis reaction mechanism of CNCl on the surface of composite metal CuCr2O4

Transition metal-modified MoS2 for catalytic hydrodeoxygenation of lignin-derived phenols to aviation fuel-range arenes

Characterization and oxygen evolution reaction performance of La2Ti2O7 synthesized by emulsion explosive detonation

Chloride-enhanced activation of peroxymonosulfate via ferrous iron for degradation of PBTC and simultaneous recovery of phosphorus

Related Author

JIN Changzhou

YIN Mengyang

WANG Haochen

SONG Jia

WANG Jingzhen

MA Shuanglong

HUANG Yan

SONG Zhenchao

Related Institution

College of Resources and Environment, Henan Agricultural University

State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology

College of Chemistry and Chemical Engineering, Taiyuan University of Technology

Shanxi Xinhua Chemical Defense Equipment Research Institute Co., Ltd.

State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum (East China)

⁰