轧制油泥资源化利用制备Fe2O3脱硝催化剂
PREPARATION OF Fe2O3 AS DENITRATION CATALYST BY RESOURCE UTILIZATION OF ROLLING SLUDGE
冯俊龙 1李春光 2夏明桂 1程锴1
作者信息
- 1. 武汉纺织大学化学与化工学院,武汉 430200
- 2. 湖北华邦化学有限公司
- 折叠
摘要
通过焙烧从固体废钢轧制油泥中分离固相,制备Fe2O3脱硝催化剂,利用X射线衍射分析、NH3程序升温脱附、H2程序升温还原等一系列表征手段探究催化剂的物化性质并考察其对氮氧化物(NOx)的氨选择性催化还原性能.结果表明,在450 ℃空气焙烧条件下制备的催化剂(H-450)在300～400 ℃温度窗口下的脱硝活性最佳,NO,转化率在85％以上.H-450主要表现为γ-Fe2O3活性晶型,同时具有较多的低温可还原铁物种和B酸,因此具有较高的活性.抗SO2和H2O中毒性能试验结果表明,体积分数10％H2O和体积分数100 μL/L SO2同时存在的气氛比分别单独通入体积分数10％H2O或体积分数100 μL/L SO2的气氛对催化剂的毒化作用更严重.
Abstract
Fe2O3,as a denitrification catalyst,was prepared by separating solid phase from solid waste rolling sludge by calcination,the physicochemical properties of the catalyst were characterized by X-ray diffraction,NH3 programmed temperature desorption and H2 programmed temperature reduction,and its ammonia-selecitve catalytic reduction performance of nitrogen oxides(NOx)was investigated.The results showed that the catalyst(H-450)prepared under 450 ℃ air calcination had the best denitrification activity at the temperature range 300-400 ℃,and the NO,conversion rate was over 85％.H-450 mainly exhibited γ-Fe2O3 active crystal form,and had abundant low-temperature reducible iron species and B acid,so it had high activity.The results of anti-SO2 and anti-H2O toxicity tests showed that the toxic effects of both 10％(φ)H2O and 100 μL/L SO2 were more serious than those of 10％(φ)H2O or 100 μL/L SO2 alone.
关键词
轧制油泥/氮氧化物还原/Fe2O3/晶型/催化剂Key words
rolling oil sludge/reduction of nitrogen oxide/Fe2O3/crystal form/catalyst引用本文复制引用
基金项目
国家自然科学基金青年基金(22002111)
湖北省教育厅科学技术研究中青年人才项目(Q20211704)
生物质纤维与生态染整湖北省重点实验室开放基金(STRZ2020035)
出版年
2024
NETL
NSTL
万方数据