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氧化铝和磷改性对非负载型催化剂结构和加氢脱硫性能的影响

曾鹤 ,  施岩 ,  李鹤鸣 ,  王晨 ,  王海彦

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引用本文: 曾鹤, 施岩, 李鹤鸣, 王晨, 王海彦. 氧化铝和磷改性对非负载型催化剂结构和加氢脱硫性能的影响[J]. 应用化学, 2016, 33(8): 951-959. doi: 10.11944/j.issn.1000-0518.2016.08.150425 shu
Citation:  ZENG He, SHI Yan, LI Heming, WANG Chen, WANG Haiyan. Effect of Aluminium Oxide and Phosphorus Modification on Structure and Hydrodesulfurization Performance of Unsupported Catalysts[J]. Chinese Journal of Applied Chemistry, 2016, 33(8): 951-959. doi: 10.11944/j.issn.1000-0518.2016.08.150425 shu

氧化铝和磷改性对非负载型催化剂结构和加氢脱硫性能的影响

  • 1.

    辽宁石油化工大学化学化工与环境学部石油化工学院 辽宁 抚顺 113001

    • 通讯作者: 王海彦,教授; Tel/Fax:024-56860958; E-mail:fswhy@126.com; 研究方向:清洁燃料生产新工艺
  • 基金项目:

    国家自然基金（21076100）资助项目 

摘要: 采用共沉淀法制备了Ni-Mo非负载型加氢脱硫催化剂，利用X射线粉末衍射分析（XRD）、低温N2吸附分析（BET）、红外光谱分析（Py-IR 、FT-IR）、氢气程序升温还原（H2-TPR）、程序升温脱附分析（NH3-TPD）、拉曼光谱分析（LRS）和气相色谱分析（GC-PFPD）等技术手段，考察了Al2O3和磷对催化剂结构性能的影响。研究结果表明，Al2O3能够增加催化剂的孔容、孔径、比表面积，增加Lewis（L）酸酸量的同时形成了Brnsted（B）酸位。在含有Al2O3的催化剂中加入磷会形成Al-P-O结构，阻止NiAl2O4尖晶石结构的形成，减小活性组分与Al2O3之间的作用；同时磷能够减少四面体配位Mo物种数量，增加八面体配位Mo物种数量。催化剂具有较长的使用寿命；磷的加入使催化剂酸性由强酸性变成弱酸性，加氢脱硫活性由94%增加到99.8%。在温度280℃，压力4.0 MPa、液时空速2.0 h-1和氢油体积比500条件下,可将催化裂化柴油中的4-甲基二苯并噻吩（4-MDBT）、4,6-二甲基二苯并噻吩（4,6-DMDBT）和2,4,6-三甲基二苯并噻吩（2,4,6-TMDBT）深度脱除，硫含量由3950 μg/g降至7.9 μg/g。

English

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    1. [1] Plantenga F L,Cefortain R,Eusbouts S,et al. A Hydroprocessing Catalysts with Breakthrough Acfivity[J]. Stud Surf Sci Catal,2003,145(8):407-410.[1] Plantenga F L,Cefortain R,Eusbouts S,et al. A Hydroprocessing Catalysts with Breakthrough Acfivity[J]. Stud Surf Sci Catal,2003,145(8):407-410.

    2. [2] LI He,YIN Changlong,ZHAO Leiyan,et al. Progresses in Unsupported Hydrotreating Catalysts[J]. Petrochem Technol,2013,42(7):811-817(in Chinese).李贺,殷长龙,赵蕾艳,等. 非负载型加氢精制催化剂的研究进展[J]. 石油化工,2013,42(7):811-817.[2] LI He,YIN Changlong,ZHAO Leiyan,et al. Progresses in Unsupported Hydrotreating Catalysts[J]. Petrochem Technol,2013,42(7):811-817(in Chinese).李贺,殷长龙,赵蕾艳,等. 非负载型加氢精制催化剂的研究进展[J]. 石油化工,2013,42(7):811-817.

    3. [3] Bocarando J,Huirache-Acun R,Bensch W,et al, Unsupported Ni-Mo-W Sulphide HDS Catalysts with the Varying Nickel Voncentration[J]. Appl Catal A:Gen,2009,363(2):45-51.[3] Bocarando J,Huirache-Acun R,Bensch W,et al, Unsupported Ni-Mo-W Sulphide HDS Catalysts with the Varying Nickel Voncentration[J]. Appl Catal A:Gen,2009,363(2):45-51.

    4. [4] Yoosuk B,Kim J H,Song C S,et al. Highly Active MoS2, CoMoS2 and NiMoS2 Unsupported Catalysts Prepared by Hydrothermal Synthesis for Hydrodesulfurization of 4,6-Dimethyldibenzothiophene[J]. Catal Today,2008,130(1):14-23.[4] Yoosuk B,Kim J H,Song C S,et al. Highly Active MoS2, CoMoS2 and NiMoS2 Unsupported Catalysts Prepared by Hydrothermal Synthesis for Hydrodesulfurization of 4,6-Dimethyldibenzothiophene[J]. Catal Today,2008,130(1):14-23.

    5. [5] Eijsbouts S,Mayo W,Fujita K. Unsupported Transition Metal Sulfide Catalysts:From Fundamentals to Industrial Application[J]. Appl Catal,A:Gen,2007,322(6):58-66.[5] Eijsbouts S,Mayo W,Fujita K. Unsupported Transition Metal Sulfide Catalysts:From Fundamentals to Industrial Application[J]. Appl Catal,A:Gen,2007,322(6):58-66.

    6. [6] Mahdavi V,Peyrovi M,Islami M,et al. Synthesis of Higher Alcohols from Syngas over Cu-Co2O3/ZnO-Al2O3 Catalyst[J]. Appl Catal,A:Gen,2005,281(1):259-265.[6] Mahdavi V,Peyrovi M,Islami M,et al. Synthesis of Higher Alcohols from Syngas over Cu-Co2O3/ZnO-Al2O3 Catalyst[J]. Appl Catal,A:Gen,2005,281(1):259-265.

    7. [7] LIU Huan,YIN Changlong,ZHAO Leiyan,et al. Hydrothermal Synthesis of Ni-Mo Unsupported Catalyst and Their Catalytic Performance[J]. Pet Process Petrochem,2013,44(9):19-23(in Chinese).刘欢,殷长龙,赵蕾艳,等. 水热法合成Ni-Mo非负载型催化剂及催化加氢性能[J]. 石油炼制与化工,2013,44(9):19-23.[7] LIU Huan,YIN Changlong,ZHAO Leiyan,et al. Hydrothermal Synthesis of Ni-Mo Unsupported Catalyst and Their Catalytic Performance[J]. Pet Process Petrochem,2013,44(9):19-23(in Chinese).刘欢,殷长龙,赵蕾艳,等. 水热法合成Ni-Mo非负载型催化剂及催化加氢性能[J]. 石油炼制与化工,2013,44(9):19-23.

    8. [8] Slavik K. Metallic Sulphide Catalysts, Processes for Synthesising Said Catalysts and Use Thereof:USP 6 562752[P],2003-5-13.[8] Slavik K. Metallic Sulphide Catalysts, Processes for Synthesising Said Catalysts and Use Thereof:USP 6 562752[P],2003-5-13.

    9. [9] Sun M Y,Bürgi T,Cattaneo R,et al. TPS, XPS, QEXAFS, and XANES Investigation of the Sulfidation of NiW/Al2O3-F Catalysts[J]. J Catal,2001,201(2):258-269.[9] Sun M Y,Bürgi T,Cattaneo R,et al. TPS, XPS, QEXAFS, and XANES Investigation of the Sulfidation of NiW/Al2O3-F Catalysts[J]. J Catal,2001,201(2):258-269.

    10. [10] Heirem J M,Reyes J,Roquero P,et al. New Hydrotreating Ni-Mo Catalysts Supported on MCM-41 Modified with Phosphorus[J]. Micropor Mesopor Mater,2005,83(1/3):283-291.[10] Heirem J M,Reyes J,Roquero P,et al. New Hydrotreating Ni-Mo Catalysts Supported on MCM-41 Modified with Phosphorus[J]. Micropor Mesopor Mater,2005,83(1/3):283-291.

    11. [11] YANG Jun,CHEN Manying,REN Jie. Effect of Mo, W Addition on Performance of Ni/Al2O3 Catalyst for Hydrodeoxygenation[J]. Chem Eng Prog,2005,24(12):1386-1389(in Chinese).杨俊,陈满英,任杰. Mo,W对Ni/Al 2O3催化剂加氢脱氧性能的影响[J]. 化工进展,2005,24(12):1386-1389.[11] YANG Jun,CHEN Manying,REN Jie. Effect of Mo, W Addition on Performance of Ni/Al2O3 Catalyst for Hydrodeoxygenation[J]. Chem Eng Prog,2005,24(12):1386-1389(in Chinese).杨俊,陈满英,任杰. Mo,W对Ni/Al 2O3催化剂加氢脱氧性能的影响[J]. 化工进展,2005,24(12):1386-1389.

    12. [12] Bendezú S,Cid R,Fierro J L G,et al. Thiophene Hydrodesulfurization on Sulfided Ni, W and NiW/USY Zeolite Catalysts: Effect of the Preparation Method[J]. Appl Catal,A,2000,197(197):47-60.[12] Bendezú S,Cid R,Fierro J L G,et al. Thiophene Hydrodesulfurization on Sulfided Ni, W and NiW/USY Zeolite Catalysts: Effect of the Preparation Method[J]. Appl Catal,A,2000,197(197):47-60.

    13. [13] Bataillea F,Lemberton J L,Michauda P,et al. Alkyldibenzothiophenes Hydrodesulfurization-promoter Effect, Reactivity, and Reaction Mechanism[J]. J Catal,2000,191(9):409-422.[13] Bataillea F,Lemberton J L,Michauda P,et al. Alkyldibenzothiophenes Hydrodesulfurization-promoter Effect, Reactivity, and Reaction Mechanism[J]. J Catal,2000,191(9):409-422.

    14. [14] HU Dawei,YANG Qinghe,SUN Shuling,et al. Effect of Phosphirus on the Performance and Active Component Structure of MoCoNi/Al2O3 Catalyst[J]. Pet Process Petrochem,2011,42(5):1-4(in Chinese).胡大为,杨清河,孙淑玲,等. 磷对Mo-W催化剂性能及活性结构的影响[J]. 石油炼制与化工,2011,42(5):1-4.[14] HU Dawei,YANG Qinghe,SUN Shuling,et al. Effect of Phosphirus on the Performance and Active Component Structure of MoCoNi/Al2O3 Catalyst[J]. Pet Process Petrochem,2011,42(5):1-4(in Chinese).胡大为,杨清河,孙淑玲,等. 磷对Mo-W催化剂性能及活性结构的影响[J]. 石油炼制与化工,2011,42(5):1-4.

    15. [15] Sigurdson S,Sundammurthy V,Dalai A K,et al. Phosphorus Promoted Trimetallic NiMoW/Al2O3, Sulfide Catalysts in Gas Oil Hydrotreating[J]. Catal,A:Chem,2008,291(1/2):30-37.[15] Sigurdson S,Sundammurthy V,Dalai A K,et al. Phosphorus Promoted Trimetallic NiMoW/Al2O3, Sulfide Catalysts in Gas Oil Hydrotreating[J]. Catal,A:Chem,2008,291(1/2):30-37.

    16. [16] LI He,YIN Changlong,BAI Zhenjiang,et al. Progresses in Phosphorous Hydrotreating Catalysts[J]. Petrochem Technol,2013,42(12):1398-1404(in Chinese).李贺,殷长龙,白振江,等. 含磷加氢精制催化剂的研究进展[J]. 石油化工,2013,42(12):1398-1404.[16] LI He,YIN Changlong,BAI Zhenjiang,et al. Progresses in Phosphorous Hydrotreating Catalysts[J]. Petrochem Technol,2013,42(12):1398-1404(in Chinese).李贺,殷长龙,白振江,等. 含磷加氢精制催化剂的研究进展[J]. 石油化工,2013,42(12):1398-1404.

    17. [17] SUN Yanyao,LI Fengyan,LI Qingjie,et al. Effect of Phosphorus Content on the Performance of MoP/ γ-Al2O3 Catalyst[J]. Pet Process Petrochem,2008,39(8):46-49(in Chinese).孙艳药,李凤艳,李庆杰,等. 磷含量对负载型磷化钼催化剂性能的影响[J]. 石油炼制与化工,2008,39(8):46-49.[17] SUN Yanyao,LI Fengyan,LI Qingjie,et al. Effect of Phosphorus Content on the Performance of MoP/ γ-Al2O3 Catalyst[J]. Pet Process Petrochem,2008,39(8):46-49(in Chinese).孙艳药,李凤艳,李庆杰,等. 磷含量对负载型磷化钼催化剂性能的影响[J]. 石油炼制与化工,2008,39(8):46-49.

    18. [18] Michaud P,Lemberton J L,Perot G. Hydrodesulfurization of Dibenzothiophene and 4,6-Dimethyldibenzo-thiophene:Effect of an Acid Component on the Activity of a Sulfided NiMo on Alumina Catalyst[J]. Appl Catal,A:Gen,1998,169(9):343-353.[18] Michaud P,Lemberton J L,Perot G. Hydrodesulfurization of Dibenzothiophene and 4,6-Dimethyldibenzo-thiophene:Effect of an Acid Component on the Activity of a Sulfided NiMo on Alumina Catalyst[J]. Appl Catal,A:Gen,1998,169(9):343-353.

    19. [19] Rana M S,Ancheyta J,Rayo P,et al. Effect of Alumina Preparation on Hydrodemetallization and Hydrodesulfurization of Maya Crude[J]. Catal Today,2004,98(98):151-160.[19] Rana M S,Ancheyta J,Rayo P,et al. Effect of Alumina Preparation on Hydrodemetallization and Hydrodesulfurization of Maya Crude[J]. Catal Today,2004,98(98):151-160.

    20. [20] Pablo T M,Ramirez J,Cuevas R. Hydrodesulfurization of 4,6-DMDBT on NiMo and CoMo Catalysts Supported on B2O3-Al2O3[J]. Catal Today,2005,107(44):551-558.[20] Pablo T M,Ramirez J,Cuevas R. Hydrodesulfurization of 4,6-DMDBT on NiMo and CoMo Catalysts Supported on B2O3-Al2O3[J]. Catal Today,2005,107(44):551-558.

    21. [21] YANG Xiyao. Technology of Temperature Programmed Analysis II[J]. Petrochem Technol,2002,31(1):63-73(in Chinese).杨锡尧. 程序升温分析技术(下)[J]. 石油化工,2002,31(1):63-73.[21] YANG Xiyao. Technology of Temperature Programmed Analysis II[J]. Petrochem Technol,2002,31(1):63-73(in Chinese).杨锡尧. 程序升温分析技术(下)[J]. 石油化工,2002,31(1):63-73.

    22. [22] Ma X L,Sakanishi K,Mochida I. Hydrodesulfunzation Reactivities of Various Sulfur Compounds in Diesel Fuel[J]. Ind Eng Chem Res,1994,33(2):218-222.[22] Ma X L,Sakanishi K,Mochida I. Hydrodesulfunzation Reactivities of Various Sulfur Compounds in Diesel Fuel[J]. Ind Eng Chem Res,1994,33(2):218-222.

    23. [23] LI Dadong. Hydrotreating Technology and Engineering[M]. Beijing:China Petrochemical Press,2004:648-650(in Chinese).李大东. 加氢处理工艺与工程[M]. 北京:中国石化出版社,2004:648-650.[23] LI Dadong. Hydrotreating Technology and Engineering[M]. Beijing:China Petrochemical Press,2004:648-650(in Chinese).李大东. 加氢处理工艺与工程[M]. 北京:中国石化出版社,2004:648-650.

    24. [24] Wang W Y,Yang Y Q,Bao J G,et al. Characterization and Catalytic Properties of Ni-Mo-B Amorphous Catalysts for Phenol Hydrodeoxygenation[J]. Catal Commun,2009,11(2):100-105.[24] Wang W Y,Yang Y Q,Bao J G,et al. Characterization and Catalytic Properties of Ni-Mo-B Amorphous Catalysts for Phenol Hydrodeoxygenation[J]. Catal Commun,2009,11(2):100-105.

    25. [25] Qian E W,Abe S,Kagawa Y,et al. Hydrodenitrogenation of Porphyrin on Ni-Mo Based Catalysts[J]. Chinese J Catal,2013,34(1):152-158.[25] Qian E W,Abe S,Kagawa Y,et al. Hydrodenitrogenation of Porphyrin on Ni-Mo Based Catalysts[J]. Chinese J Catal,2013,34(1):152-158.

    26. [26] Erdem B,Erdem S,Öksüzoğlu R M,et al. High-surface-area SBA-15-SO3H with Enhanced Catalytic Activity by the Addition of Poly(ethylene glycol)[J]. J Por Mater,2013,20(5):1041-1049.[26] Erdem B,Erdem S,Öksüzoğlu R M,et al. High-surface-area SBA-15-SO3H with Enhanced Catalytic Activity by the Addition of Poly(ethylene glycol)[J]. J Por Mater,2013,20(5):1041-1049.

    27. [27] Marazri J A,Rajagopal S,Miranda R. Bifunctional Mechanism of Pyridine Hydrodenitrogenation[J]. J Catal,1995,156(2):255-264.[27] Marazri J A,Rajagopal S,Miranda R. Bifunctional Mechanism of Pyridine Hydrodenitrogenation[J]. J Catal,1995,156(2):255-264.

    28. [28] Vakros J,Lycourghiotis A,Voyiatzis G A,et al. CoMo/Al2O3-SiO2 Catalysts Prepared by Co-equilibrium Deposition Filtration:Characterization and Catalytic Behavior for the Hydrodesulphurization of Thiophene[J]. Appl Catal B:Environ,2010,96(3/4):496-507.[28] Vakros J,Lycourghiotis A,Voyiatzis G A,et al. CoMo/Al2O3-SiO2 Catalysts Prepared by Co-equilibrium Deposition Filtration:Characterization and Catalytic Behavior for the Hydrodesulphurization of Thiophene[J]. Appl Catal B:Environ,2010,96(3/4):496-507.

    29. [29] ZHOU Tongna,YIN Hailiang,LIU Yunqi. Effect of Phosphorus Content on the Active Phase Structure of Ni-Mo/γ-Al2O3 Catalyst[J]. J Fuel Chem Technol,2010,38(1):70-74(in Chinese).周同娜,尹海亮,柳云骐. 磷含量对NiMo/γ-Al2O3催化剂活性相结构的影响[J]. 燃料化学学报,2010,38(1):70-74.[29] ZHOU Tongna,YIN Hailiang,LIU Yunqi. Effect of Phosphorus Content on the Active Phase Structure of Ni-Mo/γ-Al2O3 Catalyst[J]. J Fuel Chem Technol,2010,38(1):70-74(in Chinese).周同娜,尹海亮,柳云骐. 磷含量对NiMo/γ-Al2O3催化剂活性相结构的影响[J]. 燃料化学学报,2010,38(1):70-74.

    30. [30] YANG Zhanlin,PENG Shaozhong,LIU Xueling,et al. Effects of Phosphorus Modification on Structure and Properties of Mo-Ni/γ-Al2O3 Catalyst[J]. Petrochem Technol,2007,36(8):784-788(in Chinese).杨占林,彭绍忠,刘雪玲,等. P改性对Mo-Ni/γ-Al2O3催化剂结构和性质的影响[J]. 石油化工,2007,36(8):784-788.[30] YANG Zhanlin,PENG Shaozhong,LIU Xueling,et al. Effects of Phosphorus Modification on Structure and Properties of Mo-Ni/γ-Al2O3 Catalyst[J]. Petrochem Technol,2007,36(8):784-788(in Chinese).杨占林,彭绍忠,刘雪玲,等. P改性对Mo-Ni/γ-Al2O3催化剂结构和性质的影响[J]. 石油化工,2007,36(8):784-788.

    31. [31] CAO Guangwei,LUO Xihui,LIU Zhenhua,et al. Preparation and Characterization of Hydrotreating Catalysts I.Preparation of MoNiP/Al2O3 and Effect of Promoters[J]. Chinese J Catal,2001,22(2):143-147(in Chinese).曹光伟,罗锡辉,刘振华,等. 加氢处理催化剂的制备与表征I MoNiP/Al2O3催化剂的制备及助剂的作用[J]. 催化学报,2001,22(2):143-147.[31] CAO Guangwei,LUO Xihui,LIU Zhenhua,et al. Preparation and Characterization of Hydrotreating Catalysts I.Preparation of MoNiP/Al2O3 and Effect of Promoters[J]. Chinese J Catal,2001,22(2):143-147(in Chinese).曹光伟,罗锡辉,刘振华,等. 加氢处理催化剂的制备与表征I MoNiP/Al2O3催化剂的制备及助剂的作用[J]. 催化学报,2001,22(2):143-147.

    32. [32] YUAN Hui,XU Guangtong,QI Herima,et al. Application of Laser Raman Spectroscopy in the Co-Mo/Al2O3 Hydrogenation Catalyst[J]. Spectrosc Spectr Anal,2013,34(2):435-438(in Chinese).袁蕙,徐广通,齐和日玛,等. 激光拉曼光谱在加氢脱硫催化剂Co-Mo/Al2O3中的应用研究[J]. 光谱学与光谱分析,2013,34(2):435-438.[32] YUAN Hui,XU Guangtong,QI Herima,et al. Application of Laser Raman Spectroscopy in the Co-Mo/Al2O3 Hydrogenation Catalyst[J]. Spectrosc Spectr Anal,2013,34(2):435-438(in Chinese).袁蕙,徐广通,齐和日玛,等. 激光拉曼光谱在加氢脱硫催化剂Co-Mo/Al2O3中的应用研究[J]. 光谱学与光谱分析,2013,34(2):435-438.

    33. [33] Bergwerff J A,Jansen M,Leliveld B G,et al. Influence of the Preparation Method on the Hydrotreating Activity of MoS2/Al2O3 Extrudates:A Raman Microspectroscopy Study on the Genesis of the Active Phase[J]. J Catal,2006,243(2):292-302.[33] Bergwerff J A,Jansen M,Leliveld B G,et al. Influence of the Preparation Method on the Hydrotreating Activity of MoS2/Al2O3 Extrudates:A Raman Microspectroscopy Study on the Genesis of the Active Phase[J]. J Catal,2006,243(2):292-302.

    34. [34] Van de Water L G A,Bergwerff J A,Leliveld B G,et al. Insights into the Preparation of Supported Catalysts:A Spatially Resolved Raman and UV-Vis Spectroscopic Study into the Drying Process of CoMo/γ-Al2O3 Catalyst Bodies[J]. J Phys Chem B,2005,109(30):14513-14522.[34] Van de Water L G A,Bergwerff J A,Leliveld B G,et al. Insights into the Preparation of Supported Catalysts:A Spatially Resolved Raman and UV-Vis Spectroscopic Study into the Drying Process of CoMo/γ-Al2O3 Catalyst Bodies[J]. J Phys Chem B,2005,109(30):14513-14522.

    35. [35] Al-Megren H A,González-Cortés S L,Xiao Tiancun,et al. A Comparative Study of the Catalytic Performance of Co-Mo and Co(Ni)-W Carbide Catalysts in the Hydrodenitrogenation(HDN) Reaction of Pyridine[J]. Appl Catal A:Gen,2007,329(10):36-45.[35] Al-Megren H A,González-Cortés S L,Xiao Tiancun,et al. A Comparative Study of the Catalytic Performance of Co-Mo and Co(Ni)-W Carbide Catalysts in the Hydrodenitrogenation(HDN) Reaction of Pyridine[J]. Appl Catal A:Gen,2007,329(10):36-45.

    36. [36] ZHAO Leiyan,YIN Changlong,LIU Huan,et al. Study on Hydrodesulfurization Process of Diesel on Unsupported Catalyst[J]. Pet Process Petrochem,2014,44(10):39-43(in Chinese).赵蕾艳,殷长龙,刘欢,等. 非负载型催化剂上柴油深度加氢脱硫工艺条件研究[J]. 石油炼制与化工,2014,44(10):39-43.[36] ZHAO Leiyan,YIN Changlong,LIU Huan,et al. Study on Hydrodesulfurization Process of Diesel on Unsupported Catalyst[J]. Pet Process Petrochem,2014,44(10):39-43(in Chinese).赵蕾艳,殷长龙,刘欢,等. 非负载型催化剂上柴油深度加氢脱硫工艺条件研究[J]. 石油炼制与化工,2014,44(10):39-43.

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  • 收稿日期:  2015-12-01
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