A series of praseodymium added CeO2(ZrO2)/TiO2 catalysts separately prepared by methods of sol-gel and impregnation were tested for selective catalytic reduction of NO, and characterized by X-ray diffraction (XRD), N2-brumauer-emmett-teller (N2-BET), NH3-temperature programmed desorption (NH3-TPD), H2-temperature programmed reduction (H2-TPR), PL spectra, Ra-man spectra, electron paramagnetic resonance (EPR) and X-ray photoelectron spectroscopy (XPS), respectively. Influence of prepara-tion method on catalytic performance was studied. Results showed that the influence of Pr addition on catalytic performance of the CeO2(ZrO2)/TiO2 catalysts was different between the sol-gel method and the impregnation method. The Pr addition tended to interact with TiO2 and formed the structure of Ti-O-Pr in the sol-gel method while it was more likely to interact with CeO2 forming the struc-ture of Ce-O-Pr in the impregnation method. The total acid amount and redox properties of the catalysts prepared by sol-gel method decreased with the addition of Pr element, which resulted in decrease of catalytic activity. In contrast, the Pr-added catalyst prepared by impregnation method was found to possess easier reducibility, more total acid amount and higher proportion of Ce3+ species, which was favourable for higher catalytic activity.
参考文献
| [1] | Ding, Jie;Zhong, Qin;Zhang, Shule.A New Insight into Catalytic Ozonation with Nanosized Ce-Ti Oxides for NOx Removal: Confirmation of Ce-O-Ti for Active Sites[J].Industrial & Engineering Chemistry Research,20157(7):2012-2022. |
| [2] | 李乐;刁永发;刘鑫.Ce-Mn mixed oxides supported on glass-fiber for low-temperature selective catalytic reduction of NO with NH3[J].稀土学报（英文版）,2014(5):409-415. |
| [3] | Antonio Grossale;Isabella Nova;Enrico Tronconi.The chemistry of the NO/NO2-NH3 "fast" SCR reaction over Fe-ZSM5 investigated by transient reaction analysis[J].Journal of Catalysis,20082(2):312-322. |
| [4] | Ding, Shipeng;Liu, Fudong;Shi, Xiaoyan;Liu, Kuo;Lian, Zhihua;Xie, Lijuan;He, Hong.Significant Promotion Effect of Mo Additive on a Novel Ce-Zr Mixed Oxide Catalyst for the Selective Catalytic Reduction of NOx with NH3[J].ACS applied materials & interfaces,201518(18):9497-9506. |
| [5] | 李军燕;宋忠贤;宁平;张秋林;刘昕;李昊;黄真真.Influence of calcination temperature on selective catalytic reduction of NOx with NH3 over CeO2-ZrO2-WO3 catalyst[J].稀土学报（英文版）,2015(7):726-735. |
| [6] | Jiang, Ye;Xing, Zhimin;Wang, Xuechong;Huang, Shanbo;Liu, Qingyu;Yang, Jingshan.MoO3 modified CeO2/TiO2 catalyst prepared by a single step sol-gel method for selective catalytic reduction of NO with NH3[J].Journal of industrial and engineering chemistry,2015:43-47. |
| [7] | 李倩;谷华春;李萍;周钰浩;刘莹;齐中囡;辛颖;张昭良.非晶Ce-Ti氧化物用于NH3选择性催化还原NO的原位红外研究[J].催化学报,2014(8):1289-1298. |
| [8] | Liang Chen;Junhua Li;Maofa Ge.Enhanced activity of tungsten modified CeO2/TiO2 for selective catalytic reduction of NOx with ammonia[J].Catalysis Today,20103/4(3/4):77-83. |
| [9] | Jiang, Ye;Xing, Zhimin;Wang, Xuechong;Huang, Shanbo;Wang, Xinwei;Liu, Qingyu.Activity and characterization of a Ce-W-Ti oxide catalyst prepared by a single step sol-gel method for selective catalytic reduction of NO with NH3[J].Fuel,2015Jul.1(Jul.1):124-129. |
| [10] | Zhang, Shule;Zhong, Qin;Shen, Yuge;Zhu, Li;Ding, Jie.New insight into the promoting role of process on the CeO2-WO3/TiO2 catalyst for NO reduction with NH3 at low-temperature[J].Journal of Colloid and Interface Science,2015:417-426. |
| [11] | 房志涛;林涛;徐海迪;吴干学;孙萌萌;陈耀强.Novel promoting effects of cerium on the activities of NOx reduction by NH3 over TiO2-SiO2-WO3 monolith catalysts[J].稀土学报（英文版）,2014(10):952-959. |
| [12] | Suhua Yan;Xinping Wang;Wenchen Wang;Zequn Liu;Jiahao Niu.Selective catalytic reduction of NO by C2H2 over Ce-Al2O3 catalyst with rate-determining step of NO oxidation[J].天然气化学（英文版）,2012(03):332-338. |
| [13] | Xiaoliang Li;Yonghong Li.Molybdenum modified CeAlO_x catalyst for the selective catalytic reduction of NO with NH3[J].Journal of molecular catalysis, A. Chemical,2014:69-77. |
| [14] | Rui-tang Guo;Yue Zhou;Wei-guo Pan.Effect of preparation methods on the performance of CeO2/Al2O3 catalysts for selective catalytic reduction of NO with NH3[J].Journal of industrial and engineering chemistry,20136(6):2022-2025. |
| [15] | Caixia Liu;Liang Chen;Junhua Li.Enhancement of Activity and Sulfur Resistance of CeO2 Supported on TiO2-SiO2 for the Selective Catalytic Reduction of NO by NH3[J].Environmental Science & Technology: ES&T,201211(11):6182-6189. |
| [16] | 付伟良;沈岳松;祝社民;沈树宝.W掺入对Ti0.8Zr0.2Ce0.2O2.4/Al2O3-TiO2-SiO2催化脱硝性能的优化[J].无机材料学报,2014(12):1294-1300. |
| [17] | Kwon, Dong Wook;Nam, Ki Bok;Hong, Sung Chang.Influence of tungsten on the activity of a Mn/Ce/W/Ti catalyst for the selective catalytic reduction of NO with NH3 at low temperatures[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2015:160-166. |
| [18] | Liangjing Zhang;Suping Cui;Hongxia Guo.The influence of K~+ cation on the MnO_x-CeO2/TiO2 catalysts for selective catalytic reduction of NO_x with NH3 at low temperature[J].Journal of molecular catalysis, A. Chemical,2014:14-21. |
| [19] | Cao, Fan;Su, Sheng;Xiang, Jun;Wang, Pengying;Hu, Song;Sun, Lushi;Zhang, Anchao.The activity and mechanism study of Fe-Mn-Ce/gamma-Al2O3 catalyst for low temperature selective catalytic reduction of NO with NH3[J].Fuel,2015Jan.1(Jan.1):232-239. |
| [20] | Yuesong Shen;Shemin Zhu.Deactivation mechanism of potassium additives on Ti_(0.8)Zr_(0.2)Ce_(0.2)O_(2.4) for NH_3-SCR of NO[J].Catalysis science & technology,20129(9):1806-1810. |
| [21] | Yuesong Shen;Yifan Ma;Shemin Zhu.Promotional effect of zirconium additives on Ti_(0.8)Ce_(0.2)O2 for selective catalytic reduction of NO[J].Catalysis science & technology,20123(3):589-599. |
| [22] | Shen, Yuesong;Su, Yun;Ma, Yifan.Transition metal ions regulate the catalytic performance of Ti0.8M0.2Ce0.2O2+x for the NH3-SCR of NO: the acidic mechanism[J].RSC Advances,201510(10):7597-7603. |
| [23] | 王敏;司知蠢;陈磊;吴晓东;於俊.Hydrothermal stability of MOx-Ce0.75Zr0.25O2 catalysts for NOx reduction by ammonia[J].稀土学报（英文版）,2013(12):1148-1156. |
| [24] | 刘爽;吴晓东;林雨;李敏;翁端.Pt/Ce0.6Zr0.4O2催化剂催化氧化碳烟过程中活性氧对NO-NO2循环及表面含氧物种的分解作用[J].催化学报,2014(3):407-415. |
| [25] | B. Caglar;D. Uner.NO oxidation and NO_x storage over Ce-Zr mixed oxide supported catalysts[J].Catalysis Communications,20116(6):450-453. |
| [26] | Xiang Gao;Ye Jiang;Yincheng Fu.Preparation and characterization of CeO2/TiO2 catalysts for selective catalytic reduction of NO with NH3[J].Catalysis Communications,20105(5):465-469. |
| [27] | B.Murugan;A.V.Ramaswamy.Chemical States and Redox Properties of Mn/CeO2-TiO2 Nanocomposites Prepared by Solution Combustion Route[J].The journal of physical chemistry, C. Nanomaterials and interfaces,200851(51):20429-20442. |
| [28] | Huaqing Zhu;Zhangfeng qin;Wenjuan Shan;WenjieShen;Jianguo Wang.Pd/CeO2-TiO2 catalyst for CO oxidation at low temperature:a TPR study with H2 and CO as reducing agents[J].Journal of Catalysis,20042(2):267-277. |
| [29] | D.Andreeva;R.Nedyalkova;L.Ilieva;M.V.Abrashev.Gold-vanadia catalysts supported on ceria-alumina for complete benzene oxidation[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,20043(3):157-165. |
| [30] | Edwin Ntainjua Ndifor;Tomas Garcia;Benjamin Solsona.Influence of preparation conditions of nano-crystalline ceria catalysts on the total oxidation of naphthalene,a model polycyclic aromatic hydrocarbon[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,20073/4(3/4):248-256. |
| [31] | M.Yu.Smirnov;G.W.Graham.Pd oxidation under UHV in a model Pd/ceria-zircnia catalyst[J].Catalysis Letters,20011/2(1/2):39-44. |
| [32] | Yang Liu;Pengfei Fang;Yunlang Cheng.Study on enhanced photocatalytic performance of cerium doped TiO2-based nanosheets[J].Chemical engineering journal,2013:478-485. |
| [33] | Min Kang;Eun Duck Park;Ji Man Kim.Manganese oxide catalysts for NOx reduction with NH3 at low temperatures[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,20072(2):261-269. |
| [34] | Shang, Danhong;Zhong, Qin;Cai, Wei.Influence of the preparation method on the catalytic activity of Co/Zr1-xCexO2 for NO oxidation[J].Journal of molecular catalysis, A. Chemical,2015:18-24. |
| [35] | L.F. Liotta;M. Ousmane;G. Di Carlo.Total oxidation of propene at low temperature over Co3O4-CeO2 mixed oxides: Role of surface oxygen vacancies and bulk oxygen mobility in the catalytic activity[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,20081(1):81-88. |
| [36] | Li D;Haneda H;Labhsetwar NK;Hishita S;Ohashi N.Visible-light-driven photocatalysis on fluorine-doped TIO2 powders by the creation of surface oxygen vacancies[J].Chemical Physics Letters,20054-6(4-6):579-584. |
| [37] | Li D;Ohashi N;Hishita S;Kolodiazhnyi T;Haneda H.Origin of visible-light-driven photocatalysis: A comparative study on N/F-doped and N-F-codoped TiO2 powders by means of experimental characterizations and theoretical calculations[J].International Journal of Quantum Chemistry,200511(11):3293-3302. |
| [38] | Tongguang Xu;Liwu Zhang;Hanyun Cheng.Significantly enhanced photocatalytic performance of ZnO via graphene hybridization and the mechanism study[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,20113/4(3/4):382-387. |
| [39] | Nakamura I.;Kutsuna S.;Ihara T.;Sugihara S.;Takeuchi E.;Negishi N..Role of oxygen vacancy in the plasma-treated TiO2 photocatalyst with visible light activity for NO removal[J].Journal of molecular catalysis, A. Chemical,20001/2(1/2):205-212. |
| [40] | YANG Bo;SHEN Yuesong;ZENG Yanwei;SHEN Shubao;ZHU Shemin.Promotional effects of copper doping on Ti-Ce-Ox for selective catalytic reduction of NO by NH3 at low temperature[J].稀土学报（英文版）,2016(3):268-275. |
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