Fe/Mo/Al2O3催化剂热解火焰法合成小直径少壁碳纳米管:催化剂焙烧与还原温度的影响

人工晶体学报, 2011, 40(2): 459-464.

Fe/Mo/Al2O3催化剂热解火焰法合成小直径少壁碳纳米管:催化剂焙烧与还原温度的影响

孙保民 ^1, , 贾斌 ^2, , 郭永红 ^3, , 丁兆勇 ^4,

1.华北电力大学电站设备状态监测与控制教育部重点实验室,北京,102206

2.华北电力大学电站设备状态监测与控制教育部重点实验室,北京,102206

3.华北电力大学电站设备状态监测与控制教育部重点实验室,北京,102206

4.华北电力大学电站设备状态监测与控制教育部重点实验室,北京,102206

基金项目: 中央高校基本科研业务费专项资金资助

关键词：碳纳米管 , 载体催化剂 , 热解火焰 , 焙烧 , 还原温度

Pyrolysis Flame Synthesis of Small-diameter and Fewer-walled Carbon Nanotubes on Fe/ Mo/ Al2O3 Catalysts:Effects of the Catalyst Calcination and Reduction Temperature

采用Fe/ Mo/ Al2O3载体载入式催化剂,以CO为碳源,通过氧炔焰形成热解火焰合成了小直径少肇碳纳米管.分别对不同的催化剂焙烧温度,催化剂预先还原温度进行了对比分析.研究发现900℃的焙烧温度可以有效减小催化剂颗粒尺寸,优化颗粒尺寸的统一性以及在载体表面分散的均匀性;400 ℃的还原温度可以在防止被还原成的铁单质颗粒聚合长大,失去合成小直径少壁碳纳米管所必须的小尺寸的基础上,有效还原颗粒氧化物使其尺寸进一步减小并分散更加均匀.

参考文献

[1]	Bemholc J;Roland C;Yakobson B I .Nanotubes[J].Solid State and Materials Science,1997,2:706-718.
[2]	Saito Y;Hamaguchi K;Hata K et al.Field Emission from Carbon Nanotubes:Purified Single-walled and Multi-walled Tubes[J].ULTRAMICROSCOPY,1998,73(1-4):1-6.
[3]	Yam CY;Mo Y;Wang F;Li XB;Chen GH;Zheng X;Matsuda Y;Tahir-Kheli J;Goddard AA .Dynamic admittance of carbon nanotube-based molecular electronic devices and their equivalent electric circuit[J].Nanotechnology,2008(49):495203-1-495203-7-0.
[4]	郭连权,马贺,王帅,韩东,李辛.单壁碳纳米管储氢中管外H2势能的拟合函数[J].人工晶体学报,2006(04):747-752.
[5]	Park C;Anderson P E;Chambers A et al.Further Studies of the Interaction of Hydrogen with Graphite Nanofibers[J].Journal of Physical Chemistry B,1999,103(48):10572-10581.
[6]	Ma, WJ;Liu, LQ;Zhang, Z;Yang, R;Liu, G;Zhang, TH;An, XF;Yi, XS;Ren, Y;Niu, ZQ;Li, JZ;Dong, HB;Zhou, WY;Ajayan, PM;Xie, SS .High-Strength Composite Fibers: Realizing True Potential of Carbon Nanotubes in Polymer Matrix through Continuous Reticulate Architecture and Molecular Level Couplings[J].Nano letters,2009(8):2855-2861.
[7]	Takikawa Hirofumi;Sakakibara Tateki;Kusano Osamu .Graphite cathode spot produces carbon nanotubes in arc discharge[J].Journal of Physics, D. Applied Physics: A Europhysics Journal,1999(18):2433-2437.
[8]	Christopher M. Schauerman;Jack Alvarenga;Brian J. Landi .Impact of nanometal catalysts on the laser vaporization synthesis of single wall carbon nanotubes[J].Carbon,2009(10):2431-2435.
[9]	Cassell A M;Raymakers J A;Kong J et al.Large Scale CVD Synthesis of Single-walled Carbon Nanotubes[J].Journal of Physical Chemistry B,1999,103:6484-6492.
[10]	孙保民,丁兆勇,许秉浩.五羰基铁催化热解合成碳纳米管[J].人工晶体学报,2010(04):936-940,944.
[11]	Vander Wal RL.;Curtis VE.;Ticich TM. .Diffusion flame synthesis of single-walled carbon nanotubes[J].Chemical Physics Letters,2000(3-4):217-223.
[12]	M.J. Height;J.B. Howard;J.W. Tester .Flame synthesis of single-walled carbon nanotubes[J].Carbon,2004(11):2295-2307.
[13]	Emmanuel Lamouroux;Philippe Serp;Yolande Kihn;Philippe Kalck .Identification of key parameters for the selective growth of single or double wall carbon nanotubes on FeMo/Al2O3 CVD catalysts[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2007(0):162-173.
[14]	Dal HJ.;Nikolaev P.;Thess A.;Colbert DT.;Smalley RE.;Rinzler AG. .SINGLE-WALL NANOTUBES PRODUCED BY METAL-CATALYZED DISPROPORTIONATION OF CARBON MONOXIDE[J].Chemical Physics Letters,1996(3-4):471-475.
[15]	庞建明,郭培民,赵沛,曹朝真.氢气还原氧化铁动力学的非等温热重方法研究[J].钢铁,2009(02):11-14,19.

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Fe/Mo/Al2O3催化剂热解火焰法合成小直径少壁碳纳米管:催化剂焙烧与还原温度的影响

Pyrolysis Flame Synthesis of Small-diameter and Fewer-walled Carbon Nanotubes on Fe/ Mo/ Al2O3 Catalysts:Effects of the Catalyst Calcination and Reduction Temperature

参考文献