磁性Fe_3O_4-CeO_2 NPs/GO的制备及其高效去除氮氧化物的研究
|
摘要
本课题设计合成了磁性Fe3O_4-CeO_2NPs/GO纳米复合材料,通过催化H_2O_2产生氧自由基,将NO转化为硝酸。试验结果证明,NO_x的处理效率可达96. 0%以上。本课题实现了氮氧化物的资源化治理,"变废为宝",并利用复合材料的磁性实现对催化剂的简易回收和循环使用。具有广阔的应用前景和推广价值。
In this study,we designed and synthesized Fe3O_4-CeO_2 NPs/GO nanocomposites to catalyze the conversion of nitrogen oxides to nitric acid,so that nitric acid can be recycled.We systematically studied the effects of CeO_2 NPs content,absorption liquid temperature,nitrogen oxide concentration,and nitrogen oxide composition on the absorption effect and realized the simple recovery of catalyst by using the magnetic properties of composite materials.
In this study,we designed and synthesized Fe3O_4-CeO_2 NPs/GO nanocomposites to catalyze the conversion of nitrogen oxides to nitric acid,so that nitric acid can be recycled.We systematically studied the effects of CeO_2 NPs content,absorption liquid temperature,nitrogen oxide concentration,and nitrogen oxide composition on the absorption effect and realized the simple recovery of catalyst by using the magnetic properties of composite materials.
引文
[1]曹洪波.氮氧化物处理方法概述[J].广州化工,2014(19):24-25.
[2]中华人民共和国大气污染防治法[EB/OL]. http://www. cnca. gov. cn/bsdt/ywzl/flyzcyj/zcfg/201707/t20170711_54705.shtml,2017–07–11/2018–05–28.
[3]Br9er S,Hammer T.Selective catalytic reduction of nitrogen oxides by combining a non-thermal plasma and a V2O5-WO3/Ti O2,catalyst[J]. Appl Catal B-Environ,2000,28(2):101-111.
[4]Jr J B,Duprez D.Reactivity of steam in exhaust gas catalysis I.Steam and oxygen/steam conversions of carbon monoxide and of propane over PtRh catalysts[J]. Appl Catal B-Environ,1993,3(1):61-83.
[5]吴忠标.大气污染控制技术[M].北京,化学工业出版社,2002,281.
[6]刘景良.大气污染控制工程[M].北京,中国轻工业出版社,2002.
[7]Latimer W M. The oxidation states of the elements and their potentials in aqueous solutions[J]. Soil Science,1939,48(4):349.
[8]万家义,余林,陈豫.Cu-M/ZSM-S(M=Ce,La,Ag)催化剂的表征及其对NO直接分解催化活性的研究[J].化学研究与应用,1999(1):8-12.
[9]赵智华,李孝君.碳还原法处理氮氧化物[J].环境保护,2002(4):17-17.
[10]Chen J,Patil S,Seal S,et al. Rare earth nanoparticles prevent retinal degeneration induced by intracellular peroxides.[J].Nature Nanotech,2006,1(2):142-50.
[11]Bera P,Patil K C,Jayaram V,et al.Ionic dispersion of Pt and Pd on Ce O2,by combustion method:effect of metal–ceria interaction on catalytic activities for NO reduction and CO and hydrocarbon oxidation[J]. J Catal,2000,196(2):293-301.
[12]Li S,Li H,Liu J,et al.Highly efficient degradation of organic dyes by palladium nanoparticles decorated on 2D magnetic reduced graphene oxide nanosheets[J]. Dalton T,2015,44(19):9193.
[13]邹涛,郭灿雄,段雪,等.强磁性Fe3O4纳米粒子的制备及其性能表征[J].精细化工,2002,19(12):707-710.
[14]Chen J,Zhang Y,Zhang M,et al.Water-enhanced oxidation of graphite to graphene oxide with controlled species of oxygenated groups[J]. Chem Sci,2016,7(3):1874-1881.
[15]Liu J,Huo X,Li T,et al.Palladium nanoparticles bonded to two-dimensional iron oxide graphene nanosheets:a synergistic and highly reusable catalyst for the Tsuji-Trost reaction in water and air[J]. Chemistry,2014,20(36):11549-55.
[16]Wang L,Feng X.Polyhedral shapes of Ce O2nanoparticles[J].J Phys Chem B,2015,107(49):13563-13566.
[17]Tang X,Li Y,Huang X,et al.MnOx–Ce O2,mixed oxide catalysts for complete oxidation of formaldehyde:Effect of preparation method and calcination temperature[J]. Appl Catal B-Environ,2006,62(3–4):265-273.
[18]Ling Q,Yang M,Rao R,et al.Simple synthesis of layered Ce O2–graphene hybrid and their superior catalytic performance in dehydrogenation of ethylbenzene[J]. Appl Surf Sci,2013,274(5):131-137.
[19]Jiao M,Zeng J,Jing L,et al.Flow synthesis of biocompatible Fe3O4nanoparticles:insight into the effects of residence time,fluid velocity,and tube reactor dimension on particle size distribution[J]. Chemistry of Materials,2015,27(4):1299-1305.
[20]Liu J,Huo X,Li T,et al.Palladium nanoparticles bonded to two-dimensional iron oxide graphene nanosheets:a synergistic and highly reusable catalyst for the Tsuji-Trost reaction in water and air[J]. Chemistry,2014,20(36):11549-55.
[2]中华人民共和国大气污染防治法[EB/OL]. http://www. cnca. gov. cn/bsdt/ywzl/flyzcyj/zcfg/201707/t20170711_54705.shtml,2017–07–11/2018–05–28.
[3]Br9er S,Hammer T.Selective catalytic reduction of nitrogen oxides by combining a non-thermal plasma and a V2O5-WO3/Ti O2,catalyst[J]. Appl Catal B-Environ,2000,28(2):101-111.
[4]Jr J B,Duprez D.Reactivity of steam in exhaust gas catalysis I.Steam and oxygen/steam conversions of carbon monoxide and of propane over PtRh catalysts[J]. Appl Catal B-Environ,1993,3(1):61-83.
[5]吴忠标.大气污染控制技术[M].北京,化学工业出版社,2002,281.
[6]刘景良.大气污染控制工程[M].北京,中国轻工业出版社,2002.
[7]Latimer W M. The oxidation states of the elements and their potentials in aqueous solutions[J]. Soil Science,1939,48(4):349.
[8]万家义,余林,陈豫.Cu-M/ZSM-S(M=Ce,La,Ag)催化剂的表征及其对NO直接分解催化活性的研究[J].化学研究与应用,1999(1):8-12.
[9]赵智华,李孝君.碳还原法处理氮氧化物[J].环境保护,2002(4):17-17.
[10]Chen J,Patil S,Seal S,et al. Rare earth nanoparticles prevent retinal degeneration induced by intracellular peroxides.[J].Nature Nanotech,2006,1(2):142-50.
[11]Bera P,Patil K C,Jayaram V,et al.Ionic dispersion of Pt and Pd on Ce O2,by combustion method:effect of metal–ceria interaction on catalytic activities for NO reduction and CO and hydrocarbon oxidation[J]. J Catal,2000,196(2):293-301.
[12]Li S,Li H,Liu J,et al.Highly efficient degradation of organic dyes by palladium nanoparticles decorated on 2D magnetic reduced graphene oxide nanosheets[J]. Dalton T,2015,44(19):9193.
[13]邹涛,郭灿雄,段雪,等.强磁性Fe3O4纳米粒子的制备及其性能表征[J].精细化工,2002,19(12):707-710.
[14]Chen J,Zhang Y,Zhang M,et al.Water-enhanced oxidation of graphite to graphene oxide with controlled species of oxygenated groups[J]. Chem Sci,2016,7(3):1874-1881.
[15]Liu J,Huo X,Li T,et al.Palladium nanoparticles bonded to two-dimensional iron oxide graphene nanosheets:a synergistic and highly reusable catalyst for the Tsuji-Trost reaction in water and air[J]. Chemistry,2014,20(36):11549-55.
[16]Wang L,Feng X.Polyhedral shapes of Ce O2nanoparticles[J].J Phys Chem B,2015,107(49):13563-13566.
[17]Tang X,Li Y,Huang X,et al.MnOx–Ce O2,mixed oxide catalysts for complete oxidation of formaldehyde:Effect of preparation method and calcination temperature[J]. Appl Catal B-Environ,2006,62(3–4):265-273.
[18]Ling Q,Yang M,Rao R,et al.Simple synthesis of layered Ce O2–graphene hybrid and their superior catalytic performance in dehydrogenation of ethylbenzene[J]. Appl Surf Sci,2013,274(5):131-137.
[19]Jiao M,Zeng J,Jing L,et al.Flow synthesis of biocompatible Fe3O4nanoparticles:insight into the effects of residence time,fluid velocity,and tube reactor dimension on particle size distribution[J]. Chemistry of Materials,2015,27(4):1299-1305.
[20]Liu J,Huo X,Li T,et al.Palladium nanoparticles bonded to two-dimensional iron oxide graphene nanosheets:a synergistic and highly reusable catalyst for the Tsuji-Trost reaction in water and air[J]. Chemistry,2014,20(36):11549-55.