Mn-Ce负载型催化剂催化臭氧氧化苯胺实验研究
|
摘要
采用浸渍-焙烧法制备不同组分比例的Mn-Ce-O_x/γ-Al_2O_3双活性组分负载型催化剂,与臭氧联用降解模拟苯胺废水。催化臭氧氧化苯胺实验得出,浸渍液锰铈物质的量比为3∶1、浸渍液Mn(NO_3)_2浓度为1.0 mol/L时,催化剂对苯胺模拟废水的降解效果最佳。用该催化剂催化臭氧氧化佛山市某纺织厂的实际废水,反应30 min后,苯胺质量浓度均在0.03 mg/L以下,达到国家行业废水排放标准。
The catalysts Mn-Ce-O_x/γ-Al_2O_3with different component ratios of bifunctional constituent have been prepared by impregnation-calcination method,and the simulated aniline wastewater has been degraded by the prepared catalysts combined with ozone.It is obtained from catalytic ozonation of aniline experiments that the degradation effect of the catalyst on aniline simulated wastewater is the best,when the quantity relative ratio of Mn-Ce is 3∶1,and steeping liquid 1.0 mol/L.In addition,the actual wastewater from a textile factory in Foshan city,China,is degraded by catalytic ozonation with catalyst Mn-Ce-O_x/γ-Al_2O_3.After 30 min,all the mass concentration of aniline is below0.03 mg/L,reaching the discharge standard of national industrial wastewater
The catalysts Mn-Ce-O_x/γ-Al_2O_3with different component ratios of bifunctional constituent have been prepared by impregnation-calcination method,and the simulated aniline wastewater has been degraded by the prepared catalysts combined with ozone.It is obtained from catalytic ozonation of aniline experiments that the degradation effect of the catalyst on aniline simulated wastewater is the best,when the quantity relative ratio of Mn-Ce is 3∶1,and steeping liquid 1.0 mol/L.In addition,the actual wastewater from a textile factory in Foshan city,China,is degraded by catalytic ozonation with catalyst Mn-Ce-O_x/γ-Al_2O_3.After 30 min,all the mass concentration of aniline is below0.03 mg/L,reaching the discharge standard of national industrial wastewater
引文
[1]GB 11889-1989水质苯胺类化合物的测定N-(1-萘基)乙二胺偶氮分光光度法[S].
[2]Cao Fan,Xiang Jun,Su Sheng,et al.Ag modified Mn-Ce/γ-Al2O3catalyst for selective catalytic reduction of NO with NH3at low-temperature[J].Fuel Processing Technology,2015,135:66-72.
[3]Wang Lian,He Hong,Zhang Changbin,et al.Effects of precursors for manganese-loadedγ-Al2O3catalysts on plasma-catalytic removal of o-xylene[J].Chemical Engineering Journal,2016,288:406-413.
[4]Xie Aijuan,Zhou Xingmeng,Huang Xiaoyan,et al.Cerium-loaded MnOx/attapulgite catalyst for the low-temperature NH3-selective catalytic reduction[J].Journal of Industrial&Engineering Chemistry,2017,49:230-241.
[5]Jiang Haoxi,Zhao Jing,Jiang Dongyu,et al.Hollow MnOx-Ce O2nanospheres prepared by a green route:A novel low-temperature NH3-SCRcatalyst[J].Catalysis Letters,2014,144(2):325-332.
[2]Cao Fan,Xiang Jun,Su Sheng,et al.Ag modified Mn-Ce/γ-Al2O3catalyst for selective catalytic reduction of NO with NH3at low-temperature[J].Fuel Processing Technology,2015,135:66-72.
[3]Wang Lian,He Hong,Zhang Changbin,et al.Effects of precursors for manganese-loadedγ-Al2O3catalysts on plasma-catalytic removal of o-xylene[J].Chemical Engineering Journal,2016,288:406-413.
[4]Xie Aijuan,Zhou Xingmeng,Huang Xiaoyan,et al.Cerium-loaded MnOx/attapulgite catalyst for the low-temperature NH3-selective catalytic reduction[J].Journal of Industrial&Engineering Chemistry,2017,49:230-241.
[5]Jiang Haoxi,Zhao Jing,Jiang Dongyu,et al.Hollow MnOx-Ce O2nanospheres prepared by a green route:A novel low-temperature NH3-SCRcatalyst[J].Catalysis Letters,2014,144(2):325-332.