催化苯羟基化反应的高效介孔VOx/SBA-16催化剂

催化学报 , 2008, 29(11): 1067-1069.

催化苯羟基化反应的高效介孔VOx/SBA-16催化剂

朱宇君 ^1, , 董永利 ^2, , 赵丽娜 ^3, , 袁福龙 ^4, , 付宏刚 ^5,

1.黑龙江大学化学化工与材料学院,黑龙江省功能材料高校重点实验室,黑龙江哈尔滨,150080

2.黑龙江大学化学化工与材料学院,黑龙江省功能材料高校重点实验室,黑龙江哈尔滨,150080;黑龙江科技学院工程训练与基础实验中心,黑龙江哈尔滨,150027

3.黑龙江大学化学化工与材料学院,黑龙江省功能材料高校重点实验室,黑龙江哈尔滨,150080

4.黑龙江大学化学化工与材料学院,黑龙江省功能材料高校重点实验室,黑龙江哈尔滨,150080

5.黑龙江大学化学化工与材料学院,黑龙江省功能材料高校重点实验室,黑龙江哈尔滨,150080

基金项目: Science and Technology Foundation of Office of Education of Heilongjiang Province(10551251)

关键词：钒 , SBA-16 , 高分散 , 苯 , 羟基化

Highly Efficient VOx/SBA-16 Mesoporous Catalyst for Hydroxylation of Benzene

ZHU Yujun ^1, , DONG Yongli ^2, , ZHAO Lina ^3, , YUAN Fulong ^4, , FU Honggang ^5,

1.黑龙江大学化学化工与材料学院,黑龙江省功能材料高校重点实验室,黑龙江哈尔滨,150080

2.黑龙江大学化学化工与材料学院,黑龙江省功能材料高校重点实验室,黑龙江哈尔滨,150080;黑龙江科技学院工程训练与基础实验中心,黑龙江哈尔滨,150027

3.黑龙江大学化学化工与材料学院,黑龙江省功能材料高校重点实验室,黑龙江哈尔滨,150080

4.黑龙江大学化学化工与材料学院,黑龙江省功能材料高校重点实验室,黑龙江哈尔滨,150080

5.黑龙江大学化学化工与材料学院,黑龙江省功能材料高校重点实验室,黑龙江哈尔滨,150080

Keywords： vanadium , SBA-16 , highly dispersed , benzene , hydroxylation

利用浸渍法制备了介孔SBA-16负载高分散氧化钒催化剂(VOx/SBA-16), 并使用XRD, TEM, N2物理吸附和Raman光谱对其进行了表征. 结果表明,制备的VOx/SBA-16催化剂保持了SBA-16立方笼状孔结构,钒物种主要高度分散在SBA-16载体孔内. 钒含量为7.3%的VOx/SBA-16催化剂在催化苯羟基化反应中表现出优异的催化性能. 这是由于催化剂表面形成了高分散的VO4物种和纳米结构V2O5微晶.

Highly dispersed vanadium oxide supported on mesoporous SBA-16 (VOx/SBA-16) were prepared by the impregnation method and characterized by XRD, TEM, N2 adsorption, and Raman spectroscopy. The VOx/SBA-16 catalysts retained the cubic cage-like pore structure of SBA-16 and the vanadia species was highly dispersed and mainly in the pores of the SBA-16 support. 7.3%VOx/SBA-16 showed excellent activity for the hydroxylation of benzene, which was attributed to the formation of highly dispersed VO4 species and nanostructured V2O5 microcrystallite.

参考文献

[1]	Zhao D;Huo Q;Feng J;Chmelka B F Stucky G D .[J].Journal of the American Chemical Society,1998,120(24):6024.
[2]	Chu H;Yang L J;Zhang Q H;Wang Y .[J].Journal of Catalysis,2006,241(01):225.
[3]	Karimi B;Abedi S;Clark J H;Budarin V .[J].Angewandte Chemie International Edition,2006,118(29):4894.
[4]	Cheng CF.;Lin YC.;Cheng HH.;Chen YC. .The effect and model of silica concentrations on physical properties and particle sizes of three-dimensional SBA-16 nanoporous materials[J].Chemical Physics Letters,2003(5-6):496-501.
[5]	Kim T W;Ryoo R;Kruk M;Gierszal K P Jaroniec M Kamiya S Terasaki O .[J].Journal of Physical Chemistry B,2004,108(31):11480.
[6]	Yang H Q;Zhang L;Su W G;Yang Q H Li C .[J].Journal of Catalysis,2007,248(02):204.
[7]	Tsoncheva T;Linden M;Areva S;Minchev C H .[J].Catalysis Communications,2006,7(06):357.
[8]	Lemke K;Ehrich H;Lohse U;Berndt H Jhnisch K .[J].Applied Catalysis A:General,2003,243(01):41.
[9]	Liu Y M;Cao Y;Yi N;Feng W L Dai W L Yan S R He H Y Fan K N .[J].Journal of Catalysis,2002,224(02):417.
[10]	Kataoka S;Endo A;Harada A;Ohmori T .[J].Materials Letters,2008,62(4-5):723.
[11]	Stevens, WJJ;Mertens, M;Mullens, S;Thijs, N;Van Tendeloo, G;Cool, P;Vansant, EF .Formation mechanism of SBA-16 spheres and control of their dimensions[J].Microporous and Mesoporous Materials,2006(1/3):119-124.
[12]	Hess C;Hoefelmeyer J D;Tilley T D .[J].Journal of Physical Chemistry B,2004,108(28):9703.
[13]	Segura Y;Cool P;Kustrowski P;Chmielarz L Dziembaj R Vansant E F .[J].Journal of Physical Chemistry B,2005,109(24):12071.
[14]	Hess C .[J].Journal of Catalysis,2007,248(01):120.
[15]	Baltes M;Cassiers K;Van Der Voort P;Weckhuysen B M Schoonheydt R A Vansant E F .[J].Journal of Catalysis,2001,197(01):160.

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