Catalytic Combustion of Low Concentration Dichloromethane over Ce-Co series Catalysts
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- 英文论文题名：Catalytic Combustion of Low Concentration Dichloromethane over Ce-Co series Catalysts
- 论文作者：Zhang Jingxiao
- 英文论文作者：Zhang Jingxiao ; College of chemistry and environmental engineering ; Hubei University for Nationalities
- 年：2016
- 作者机构：College of chemistry and environmental engineering,Hubei University for Nationalities;
- 英文论文关键词：Catalytic combustion ; Dichloromethane ; Cerium ; Cobalt
- 会议召开时间：2016-09-23
- 会议录名称：中部四省化学化工学会2016年学术年会摘要集
- 语种：英文
- 分类号：O643.36;O643.21
- 学会代码：JXHX
- 会议名称：中部四省化学化工学会2016年学术年会
- 会议地点：中国江西南昌
- 主办单位：中国化学会湖北代表处
- 学会名称：江西省化学化工学会
- 页数：1
- 文件大小：101k
- 原文格式：D
- 会议级别：地方
摘要
Catalytic oxidation is one of the most effective treatment methods of gases emissions containing low concentration chlorinated volatile organic compounds(CVOC).CeO_2-CoO_x series composite oxide catalysts with different Ce and Co ratios were prepared by hydrothermal decomposition method using Ce(NO_3)3·6H_2O and Co(NO_3)2·6H_2O as precursors.The results of their characterization and catalytic performance revealed that the surface of CeO_2-CoO_x samples prepared by hydrothermal decomposition method have irregular structure.The enhancement of the catalytic activity and the products distribution could be accounted for the basis of oxidation and acidity of catalysts with property Ce and Co ratios.On the condition of gas hourly space velocity of 10000h~(-1) and DCM concentration of 1500 ppm,an optimal CeO_2-CoO_x(Ce:Co=3:7) catalyst was found with T50 at 164°C,T98 at 206°C,with 100% selectivity to CO_2 and 63.3% selectivity to HCl,and this catalyst showed relatively stable catalytic activity during 100 hours reaction.
Catalytic oxidation is one of the most effective treatment methods of gases emissions containing low concentration chlorinated volatile organic compounds(CVOC).CeO_2-CoO_x series composite oxide catalysts with different Ce and Co ratios were prepared by hydrothermal decomposition method using Ce(NO_3)3·6H_2O and Co(NO_3)2·6H_2O as precursors.The results of their characterization and catalytic performance revealed that the surface of CeO_2-CoO_x samples prepared by hydrothermal decomposition method have irregular structure.The enhancement of the catalytic activity and the products distribution could be accounted for the basis of oxidation and acidity of catalysts with property Ce and Co ratios.On the condition of gas hourly space velocity of 10000h~(-1) and DCM concentration of 1500 ppm,an optimal CeO_2-CoO_x(Ce:Co=3:7) catalyst was found with T50 at 164°C,T98 at 206°C,with 100% selectivity to CO_2 and 63.3% selectivity to HCl,and this catalyst showed relatively stable catalytic activity during 100 hours reaction.
Catalytic oxidation is one of the most effective treatment methods of gases emissions containing low concentration chlorinated volatile organic compounds(CVOC).CeO_2-CoO_x series composite oxide catalysts with different Ce and Co ratios were prepared by hydrothermal decomposition method using Ce(NO_3)3·6H_2O and Co(NO_3)2·6H_2O as precursors.The results of their characterization and catalytic performance revealed that the surface of CeO_2-CoO_x samples prepared by hydrothermal decomposition method have irregular structure.The enhancement of the catalytic activity and the products distribution could be accounted for the basis of oxidation and acidity of catalysts with property Ce and Co ratios.On the condition of gas hourly space velocity of 10000h~(-1) and DCM concentration of 1500 ppm,an optimal CeO_2-CoO_x(Ce:Co=3:7) catalyst was found with T50 at 164°C,T98 at 206°C,with 100% selectivity to CO_2 and 63.3% selectivity to HCl,and this catalyst showed relatively stable catalytic activity during 100 hours reaction.
引文
[1]B.de Rivas,R.Lopez-Fonseca,C.Jimenez-Gonzalez,et al.Synthesis,characterisation and catalytic performance of nanocrystalline Co3O4 for gas-phase chlorinated VOC abatement[J].Journal of Catalysis,2011,281(1):88-97.
[2]S.Bai,Q.Dai,H.Huang,et al.Burning and removing chlorine containing volatile organic compound using a catalyst,where the catalyst comprises ruthenium oxide and transition metal oxide-cerium oxide composite oxide carrier,CN102698751-A[P/OL].
[3]C.W.Sun,H.Li,L.Q.Chen.Study of flowerlike Ce O2 microspheres used as catalyst supports for CO oxidation reaction[J].Journal of Physics and Chemistry of Solids,2007,68(9):1785-1790.
[4]D.C.Kim,S.K.Ihm.Application of spinel-type cobalt chromite as a novel catalyst for combustion of chlorinated organic pollutants[J].Environmental Science&Technology,2001,35(1):222-226.
[2]S.Bai,Q.Dai,H.Huang,et al.Burning and removing chlorine containing volatile organic compound using a catalyst,where the catalyst comprises ruthenium oxide and transition metal oxide-cerium oxide composite oxide carrier,CN102698751-A[P/OL].
[3]C.W.Sun,H.Li,L.Q.Chen.Study of flowerlike Ce O2 microspheres used as catalyst supports for CO oxidation reaction[J].Journal of Physics and Chemistry of Solids,2007,68(9):1785-1790.
[4]D.C.Kim,S.K.Ihm.Application of spinel-type cobalt chromite as a novel catalyst for combustion of chlorinated organic pollutants[J].Environmental Science&Technology,2001,35(1):222-226.