Enhanced SO2 resistance of V2O5/WO3-TiO2 catalyst physically mixed with alumina for the selective catalytic reduction of NOx with NH3

催化作用 氮氧化物 硫黄 选择性催化还原 吸附 化学 化学工程 烟气 烟气脱硫 材料科学 无机化学 有机化学 燃烧 工程类
作者
Se Won Jeon,Inhak Song,Hwangho Lee,Joonwoo Kim,Youngchul Byun,Dong Jun Koh,Do Heui Kim
出处
期刊:Chemical Engineering Journal [Elsevier BV]
卷期号:433: 133836-133836 被引量:28
标识
DOI:10.1016/j.cej.2021.133836
摘要

Selective catalytic reduction with NH3 (NH3-SCR) is an effective NOx removal technology in the industry. Vanadia supported on tungsten titania (V2O5/WO3-TiO2) is most widely utilized for NH3-SCR because of its high tolerance to sulfur. Although it exhibits stable performance under SO2 in the stream, there are still unsolved sulfur poisoning issues under low-temperature operations due to the accumulation of ammonium bisulfate (ABS). In this study, we introduce a hybrid catalyst comprising V2O5/WO3-TiO2 physically mixed with alumina (VWTi + Al), which exhibited superior stability during SO2 aging compared to conventional vanadia catalysts. The improved sulfur tolerance originates from the direct migration of in-situ formed ABS from the vanadia domain to the alumina domain through physical contact rather than gas-phase SO2 adsorption on alumina. Interestingly, the mixed alumina maintains superior affinity to ABS as well as reusability after repetitive SO2 aging and regeneration. In addition, the protection ability, i.e. affinity to ABS, of mixed alumina closely related to its surface properties including acidity and pore size. The present study suggests that the hybrid catalyst can be an applicable catalyst to NOx removal process in stationary sources and a breakthrough for the decrease of pollutants emission.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
香蕉觅云应助科研通管家采纳,获得10
刚刚
刚刚
汉堡包应助科研通管家采纳,获得30
1秒前
1秒前
852应助科研通管家采纳,获得10
1秒前
1秒前
顾矜应助科研通管家采纳,获得10
1秒前
1秒前
斯文败类应助科研通管家采纳,获得10
1秒前
1秒前
1秒前
水木应助科研通管家采纳,获得20
1秒前
大个应助未明的感觉采纳,获得10
3秒前
光亮的半山完成签到,获得积分10
4秒前
4秒前
5秒前
5秒前
slx发布了新的文献求助10
6秒前
Akim应助比利时光采纳,获得10
6秒前
思源应助waitingfor采纳,获得10
7秒前
7秒前
DueR完成签到,获得积分10
8秒前
清爽乐菱应助失眠的夜梦采纳,获得30
8秒前
磊磊完成签到,获得积分10
9秒前
Chelry发布了新的文献求助30
9秒前
闾丘剑封发布了新的文献求助10
9秒前
Chief完成签到,获得积分0
10秒前
mk91发布了新的文献求助10
10秒前
镇江市第一人民医院第一深情完成签到,获得积分10
11秒前
xiaoyuanbao1988完成签到,获得积分10
11秒前
qin希望应助不回首采纳,获得10
12秒前
上官若男应助不回首采纳,获得10
12秒前
科研通AI2S应助不回首采纳,获得10
12秒前
Jasper应助不回首采纳,获得10
12秒前
科研通AI5应助不回首采纳,获得10
12秒前
JamesPei应助不回首采纳,获得10
12秒前
12秒前
Lucy完成签到 ,获得积分10
12秒前
15秒前
学术蝗虫发布了新的文献求助10
16秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989510
求助须知:如何正确求助?哪些是违规求助? 3531756
关于积分的说明 11254536
捐赠科研通 3270255
什么是DOI,文献DOI怎么找? 1804947
邀请新用户注册赠送积分活动 882113
科研通“疑难数据库(出版商)”最低求助积分说明 809176