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[1]李溪,张潇,徐炎华,等.Mn-Ce/γ-Al2O3协同O3催化降解苯乙烯[J].南京工业大学学报(自然科学版),2019,41(05):638-643.[doi:10.3969/j.issn.1671-7627.2019.05.015]
 LI Xi,ZHANG Xiao,XU Yanhua,et al.Mn-Ce/γ-Al2O3 catalyst combined ozone oxidation for styrene degradation[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2019,41(05):638-643.[doi:10.3969/j.issn.1671-7627.2019.05.015]
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Mn-Ce/γ-Al2O3协同O3催化降解苯乙烯()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
41
期数:
2019年05期
页码:
638-643
栏目:
出版日期:
2019-10-22

文章信息/Info

Title:
Mn-Ce/γ-Al2O3 catalyst combined ozone oxidation for styrene degradation
文章编号:
1671-7627(2019)05-0638-06
作者:
李溪张潇徐炎华于鹏
南京工业大学 环境科学与工程学院,江苏 南京 211800
Author(s):
LI XiZHANG XiaoXU YanhuaYU Peng
School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211800, China
关键词:
Mn-Ce/γ-Al2O3 O3氧化 苯乙烯降解
Keywords:
Mn-Ce/γ-Al2O3 ozone oxidation styrene degradation
分类号:
X511
DOI:
10.3969/j.issn.1671-7627.2019.05.015
文献标志码:
A
摘要:
利用Mn-Ce/γ-Al2O3二元复合金属氧化物催化剂协同O3氧化降解苯乙烯废气。研究催化剂活性组分负载量、改性金属氧化物添加量、焙烧温度对催化剂性能的影响,探究不同工艺参数(O3浓度、苯乙烯浓度、停留时间)对催化苯乙烯降解效果的影响及苯乙烯在O3催化氧化环境下的降解机制。采用X线衍射仪(XRD)、扫描电子显微镜(SEM)、N2吸附-脱附分析仪对催化剂进行表征; 采用气相色谱-质谱联用仪(GC-MS)测定反应前后苯乙烯气体及反应产物质量浓度。结果表明:在Mn负载量为5%、Ce负载量为1%、焙烧温度为500 ℃条件下,催化剂性能最好,并且在O3质量浓度0.2 g/m3、苯乙烯质量浓度为1 g/m3、停留时间为4 s时,苯乙烯最高去除率达到90.4%。
Abstract:
Metallic oxide catalyst Mn-Ce/γ-Al2O3 and ozone oxidation were combined for styrene degrataion. The influences of the loading capacity of active ingredient, the addition of the modifying metal oxide and calcinating temperature on the catalytic performance and process parameters(ozone concentration, styrene concentration and residence time)on styrene degradation were studied. The mechanism of styrene degradation by ozone catalytic oxidation were investigated. Synthesized catalysts were characterized by X-ray diffraction(XRD),scanning electron microscope(SEM)and N2 adsorption-desorption analysis. Styrene concentrations and intermediate compounds during the reaction process were detected by gas chromatography-mass spectrometer(GC-MS). Results showed that the highest styrene removal reached up to 90.4% with the catalyst synthesized under optimal conditions of Mn capacity of 5%,Ce capacity of 1% and calcination temperature of 500 ℃ with optimal process conditions as ozone mass concentration of 0.2 g/m3, styrene mass concentration of 1 g/m3 and residence time of 4 s.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2019-07-01
基金项目:国家重点研发计划(2017yfb0602500); 江苏省自然科学研究计划(16KJA610002); 国家自然科学基金青年基金(21600738)
作者简介:李溪(1991—),男,E-mail:lixi_26@163.com; 于鹏(联系人),讲师,E-mail:yspong@163.com.
引用本文:李溪,张潇,徐炎华,等.Mn-Ce/γ-Al2O3协同O3催化降解苯乙烯[J].南京工业大学学报(自然科学版),2019,41(5):638-643..
更新日期/Last Update: 2019-09-30