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ISSN 1000-6818CN 11-1892/O6CODEN WHXUEU
Acta Phys Chim Sin >> 2011,Vol.27>> Issue(07)>> 1743-1750     doi: 10.3866/PKU.WHXB20110711         中文摘要
CATALYSIS AND SURFACE SCIENCE
Fabrication of Mesoporous NiAl2O4 Nanorods and Their Catalytic Properties for Toluene Hydrocracking
SHEN Shan-Shan, LU Wen-Cong, ZHANG Liang-Miao, YUE Bao-Hua, HAN Ling, ZHANG Hao
Department of Chemistry, Shanghai University, Shanghai 200444, P. R. China
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Mesoporous single-crystalline NiAl2O4 nanorods were successfully synthesized by a one-step hydrothermal method using a pore-forming agent (NH4HCO3). A series of controlled experiments were also carried out to better understand the formation mechanism of NiAl2O4 nanorods. The experimental results indicate that the reaction time, reactant concentration and the amount of NH4HCO3 play an important role in determining the morphology. The morphology, structure and composition of the nanorods were investigated using transmission electron microscopy, high resolution transmission electron microscopy, scanning electron microscopy and X-ray diffraction. The specific surface area and pore-size distribution of the obtained product was determined by nitrogen adsorption-desorption measurements. NiAl2O4 nanorods have a high Brunauer-Emmett-Teller surface area and good porosity properties. The catalytic performance of the NiAl2O4 nanorods during toluene hydrocracking was investigated using a fixed bed reactor. After the toluene catalytic reactions over 400 min at a water stream/carbon molar ratio (H2O/C) of 1.0 with a reaction temperature of 700 ℃ the average conversion efficiency of toluene was about 86.5%. Compared to the NiAl2O4 nanoparticles prepared by alkaline precipitation, the mesoporous NiAl2O4 nanorods exhibited higher catalytic activity and stability during toluene hydrocracking. A possible formation mechanism for the mesoporous NiAl2O4 nanorods is proposed and discussed.



Keywords: Hydrothermal method   Single-crystalline NiAl2O4   NH4HCO3   Nickel catalyst   Characterization  
Received: 2011-02-23 Accepted: 2011-05-05 Publication Date (Web): 2011-05-19
Corresponding Authors: LU Wen-Cong Email: wclu@shu.edu.cn

Fund: The project was supported by the National Natural Science Foundation of China (20973108), Shanghai Education Committee, China (11ZZ83), Shanghai Leading Academic Discipline Project, China (J50101), and Innovation Fund of Shanghai University, China (A.10-0101-09-023).

Cite this article: SHEN Shan-Shan, LU Wen-Cong, ZHANG Liang-Miao, YUE Bao-Hua, HAN Ling, ZHANG Hao. Fabrication of Mesoporous NiAl2O4 Nanorods and Their Catalytic Properties for Toluene Hydrocracking[J]. Acta Phys. -Chim. Sin., 2011,27 (07): 1743-1750.    doi: 10.3866/PKU.WHXB20110711

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66. SU Bi-Tao, SUN Jia-Xing, HU Chang-Lin, ZHANG Xiao-Hong, FEI Peng, LEI Zi-Qiang.Preparation and Characterization of Fe3+-Doped TiO2 Photocatalytic Fiber Materials[J]. Acta Phys. -Chim. Sin., 2009,25(08): 1561-1566
67. LV Yong, LU Wen-Cong, ZHANG Liang-Miao, YUE Bao-Hua, SHANG Xing-Fu, NI Ji-Peng.Synthesis, Characterization and Growth Mechanism of Core/Shell AlOOH Microspheres[J]. Acta Phys. -Chim. Sin., 2009,25(07): 1391-1396
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69. FAN Min-Guang, LI Bin, ZHANG Fei-Yue, LI Wang-Liang, XING Jian-Min, LIU Zi-Li.Distribution of Copper Ions in a CuLaHY Zeolite and Its Performance in Adsorption Desulfurization[J]. Acta Phys. -Chim. Sin., 2009,25(03): 495-501
70. ZHAO Rui-Hua, DONG Mei, QIN Zhang-Feng, DING Jian-Fei, GUO Xing-Cui, WANG Jian-Guo.Synthesis and Characterization of CoAPO-5 with different Cobalt Contents and Their Catalytic Performance for Cyclohexane Oxidation[J]. Acta Phys. -Chim. Sin., 2008,24(12): 2304-2308
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