低温SCR脱硝催化剂的制备与性能研究  

Preparation and Performance Study of Low-temperature SCR Denitrification Catalysts

作　　者：陈秀山 CHEN Xiushan(Shandong Haike Chemical Co.,Ltd.,Dongying 257000,China)

机构地区：[1]山东海科化工有限公司,山东东营257000

出　　处：《化工管理》2024年第33期150-153,共4页Chemical Management

摘　　要：文章探讨了以荷叶为代表的可持续碳源、通过氰化钠改性和高温热解工艺制备的荷叶基碳纳米材料(LBC)在大气污染控制领域的应用潜力。以LBC作为载体,负载锰氧化物(MnO_(x))作为活性组分,成功开发了一种低温高效的选择性催化还原(SCR)烟气脱硝催化剂。通过扫描电子显微镜(SEM)、氢气温度程序还原(H_(2)-TPR)等技术对催化剂进行了综合表征。实验结果表明,负载10%MnO_(x)的催化剂在250℃时NO_(x)转化率达到82.8%,展现出卓越的低温脱硝性能。MnO_(x)在LBC表面的均匀分散和催化剂的优异氧化还原特性是其具备低温活性的关键因素。文章不仅为农业废弃物的高值化利用提供了新思路,也为工业烟气脱硝技术的发展提供了新的解决方案。This paper explores the application potential of lotus leaf based carbon nanomaterial(LBC),represented by sustainable carbon sources such as lotus leaf,prepared through sodium cyanide modification and high-temperature pyrolysis processes in the field of air pollution control.A low-temperature and efficient selective catalytic reduction(SCR) flue gas denitrification catalyst was successfully developed using LBC as a carrier and loaded with manganese oxide(MnO_x) as the active component.The catalyst was comprehensively characterized by techniques such as scanning electron microscopy(SEM) and hydrogen temperature programmed reduction(H_2-TPR).The experimental results show that the catalyst loaded with 10% MnO_(x) has a NO_(x) conversion rate of 82.8% at 250 ℃,demonstrating excellent low-temperature denitrification performance.The uniform dispersion of MnO_(x) on the surface of LBC and the excellent redox properties of the catalyst are key factors for its low-temperature activity.This study not only provides new ideas for the high-value utilization of agricultural waste,but also offers new solutions for the development of industrial flue gas denitrification technology.

关 键 词：低温烟气脱硝 荷叶 生物炭 锰氧化物 锰负载 

分 类 号：X7[环境科学与工程—环境工程]