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Chinese Journal of Catalysis
2010, Vol. 31, No. 4
Online: 25 April 2010


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Copper-containing mesoporous silicas with hierarchical pores were synthesized under near neutral conditions, as described by Tang and coworkers in the article on pages 386–393. The picture exhibits the pore structure of the material, which shows higher catalytic activity for phenol hydroxylation than the material with only mesopores.

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Synthesis of Propylene Carbonate from Alcoholysis of Urea Catalyzed by Modi-fied Hydroxyapatites DU Zhiping*;LIU Liang;YUAN Hua;XIONG Jian;ZHOU Bin;WU Yuanxin 2010, 31 (4):  371-373.  Abstract ( 2280 )   [Full Text(HTML)] () PDF (1195KB) ( 988 )   The high activity of metal-modified hydroxyapatite catalysts for urea alcoholysis is ascribed to the strong basic sites on their surface compared with those of hydroxyapatite or corresponding metal oxides.

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Effect of Crystallization of Hydrous Zirconia on the Isomerization Activity of Pt/WO3-ZrO2 ZHANG Juanjuan;SONG Yueqin;*;ZHANG Yifei;ZHOU Xiaolong;JIN Yaqing;XU Longya 2010, 31 (4):  374-376.  Abstract ( 2076 )   [Full Text(HTML)] () PDF (468KB) ( 1606 )   The crystallization that occurred in the interior of Zr(OH)4 particles under hydrothermal conditions led to high catalytic activity of Pt/WO3-ZrO2, and the crystallization on the surface region of the particles resulted in an inactive catalyst.

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Preparation and Catalytic Properties of Barium Cerate and Yttrium-Doped Barium Cerate Supported Ruthenium for Ammonia Synthesis YANG Xiaolong;XIA Chungu;XIONG Xumao;MU Xinyuan;HU Bin;* 2010, 31 (4):  377-379.  Abstract ( 2271 )   [Full Text(HTML)] () PDF (3644KB) ( 1108 )   Ru/BaCeO3 and Ru/BaCe0.9Y0.1O3-δ catalysts were prepared and used for ammonia synthesis. Doping of Y3+ ions enhanced the strong interaction between the support and ruthenium particles.

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Reactive Ion Exchange Synthesis of Nano-ZnO and Its Photocatalytic Properties ZHU Shaomin;*;LI Yansheng;ZHANG Zhihong 2010, 31 (4):  380-382.  Abstract ( 2194 )   [Full Text(HTML)] () PDF (1789KB) ( 1190 )   This article reports a novel reactive ion exchange procedure for the synthesis of nano-crystalline ZnO particles, which are successfully used as catalyst materials for cyclic photocatalytic degradation of methyl orange.

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AlCl3/MCM-41 as a Catalyst for Isomerization of Endo-tricyclodecane QI Lili;JI Min*;WANG Xinkui;HE Min;CAI Tianxi 2010, 31 (4):  383-385.  Abstract ( 2254 )   [Full Text(HTML)] () PDF (431KB) ( 1023 )   The shorter straight pore channel of AlCl3/MCM-41 gave it the higher exo-tricyclodecane (exo-TCD) selectivity and suppression of further isomerization of exo-TCD to adamantine (ADH). The larger pore size of AlCl3/SiO2 was responsible for the lower exo-TCD selectivity.

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Synthesis of Hierarchical Copper-Containing Silicas under Near Neutral Condi-tions and Their Catalytic Properties in Phenol Hydroxylation TANG Jianting;XIN Hongchuan;SU Weiguang;LIU Jian;LI Can;YANG Qihua;* 2010, 31 (4):  386-393.  Abstract ( 2439 )   [Full Text(HTML)] () PDF (3233KB) ( 1104 )   Copper-containing mesoporous silicas with hierarchical porosity were synthesized under near neutral conditions. This kind of material shows higher catalytic activity than that with only mesopores for the hydroxylation of phenol using H2O2 as oxidant.

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Effect of Copper Substitution and Preparation Methods on the LaMnO3∮ Structure and Catalysis of Methane Combustion and CO Oxidation Maryam ABDOLRAHMANI;Matin PARVARI*;Mehdi HABIBPOOR 2010, 31 (4):  394-403.  Abstract ( 2448 )   [Full Text(HTML)] () PDF (3235KB) ( 1769 )   LaMn1-xCuxO3∮d perovskite oxides (x = 01) prepared by the Pechini method show higher surface area and thus higher activity and stability in CO oxidation and CH4 combustion than that by the sol-gel method.

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Low-Temperature Catalytic Combustion of Cooking Fume over Pt/γ-Al2O3/Ce0.5-xZr0.5-xMn2xO2 Monolithic Catalyst WANG Jianli;LIAO Chuanwen;CHEN Yongdong;CAO Hongyan;LIU Zhimin;GONG Maochu;CHEN Yaoqiang* 2010, 31 (4):  404-408.  Abstract ( 2595 )   [Full Text(HTML)] () PDF (530KB) ( 1074 )   A series of Ce0.5-xZr0.5-xMn2xO2 complicated oxides were prepared, and the effect of the Mn content in the complicated oxides on the catalytic activity of Pt/γ-Al2O3/Ce0.5-xZr0.5-xMn2xO2 was further investigated.

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Effect of Additives on Catalytic Cracking of Biomass Gasification Tar over Nickel-Based Catalyst LIU Haibo;CHEN Tianhu;*;ZHANG Xianlong;LI Jinhu;CHANG Dongyin;SONG Lei 2010, 31 (4):  409-414.  Abstract ( 2552 )   [Full Text(HTML)] () PDF (5483KB) ( 1777 )   The Ni-based catalyst with the Fe additive showed high tar removal because of interaction of nickel oxides and iron oxides on palygorskite (PG). The tar removal of 99.0% was obtained over 8%Fe-6%Ni/PG, which was 34.6% and 30% higher than 6%Ni/PG and 8%Mn-6%Ni/PG, respectively.

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Density Functional Theory Study on Structure of Molybdenum Carbide and Catalytic Mechanism for Methane Activation over ZSM-5 Zeolite XING Shuangying;ZHOU Danhong;*;CAO Liang;LI Xin 2010, 31 (4):  415-422.  Abstract ( 2735 )   [Full Text(HTML)] () PDF (7961KB) ( 1243 )   The Mo2(CH2)5/ZSM-5 was proved as the effective active center for methane activation by using DFT calculations. The C–H bond dissociation occurred on the π orbital of Mo=CH2 with the activation energy of 106 kJ/mol.

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Density Functional Theory Study of CO and O2 Adsorption on NiFeB2/TiO2 Surface ZENG Qingsong;CHEN Wenkai;*;DAI Wenxin;ZHANG Yongfan;LI Yi;GUO Xin 2010, 31 (4):  423-428.  Abstract ( 2541 )   [Full Text(HTML)] () PDF (505KB) ( 1322 )   During co-adsorptions of CO and O2 on NiFeB2/TiO2 surface by a Langmuir-Hinshelwood (L-H) mechanism, the oxygen was decomposed and bonded with Fe and Ni atoms to form a stable six-membered ring.

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Preparation of CeO2-ZrO2-Al2O3 and Catalytic Performance of Palla-dium-Based Three-Way Catalyst ZHAO Ming;WANG Hairong;CHEN Shanhu;YAO Yanling;GONG Maochu;CHEN Yaoqiang* 2010, 31 (4):  429-434.  Abstract ( 2430 )   [Full Text(HTML)] () PDF (613KB) ( 1200 )   A series of the CeO2-ZrO2-Al2O3 (CZA) composite oxide samples were prepared, and the effect of Al2O3 amount in the composite oxide on the catalytic performance of Pd/CZA was further investigated.

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Effect of K Promoter on the Performance of Pt-Sn-K/γ-Al2O3 Catalyst for n-Hexadecane Dehydrogenation HE Songbo;LAI Yulong;BI Wenjun;YANG Xu;RONG Xin;SUN Chenglin* 2010, 31 (4):  435-440.  Abstract ( 2574 )   [Full Text(HTML)] () PDF (511KB) ( 1299 )   Effect of K promoter on the structure and performance of the Pt-Sn-K/γ-Al2O3 catalyst for the dehydrogenation of long-chain paraffins was investigated by catalyst characterization using n-hexadecane dehydrogenation as a test reaction.

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Effects of Acid-Base Properties of Oxide Catalysts on Transformation of 1,2-Propylene Glycol YU Zhengxi;;XU Lei;ZHANG Xinzhi;LIU Zhongmin;* 2010, 31 (4):  441-446.  Abstract ( 2559 )   [Full Text(HTML)] () PDF (525KB) ( 1157 )   A renewable route to produce common petroleum-based oxygenated hydrocarbons from 1,2-propylene glycol, the derivative of bio-glycerol, was proposed. The reaction pathway of transformation of 1,2-propylene glycol significantly depended on the surface acid-base properties of the oxide catalysts such as Al2O3-, MgO-, CaO-, and KNO3-modified MgO.

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Preparation of TiO2-Al2O3 Support and Simultaneous Hydrodesulfurization and Hydrodenitrogenation over Ni2P/TiO2-Al2O3 Catalyst SONG Hua;*;YU Hongkun;WU Xianchun;GUO Yuntao 2010, 31 (4):  447-453.  Abstract ( 2567 )   [Full Text(HTML)] () PDF (6963KB) ( 1580 )   Simultaneous hydrodesulfurization (HDS) and hydrodenitrogenation (HDN) over Ni2P/TiO2-Al2O3 were investigated. The catalyst prepared from TiO2-Al2O3 composite oxide support with 80% TiO2 exhibited the highest activity for thiophene HDS and pyridine HDN.

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Characterization and Ammonia Adsorption-Desorption of Palygorskite- Sup-ported Manganese Oxide as a Low-Temperature Selective Catalytic Reduction Catalyst LI Jinhu;ZHANG Xianlong;CHEN Tianhu;*;LIU Haibo;SHI Peichao 2010, 31 (4):  454-460.  Abstract ( 2290 )   [Full Text(HTML)] () PDF (792KB) ( 1258 )   Adsorption of NH3 on the Mn/palygorskite catalyst prepared by heterogeneous co-precipitation occurs mainly on the palygorskite support. Loading of manganese oxides does not promote NH3 adsorption on the catalysts but increases the activation of adsorbed NH3.

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Furfural Hydrogenation over Cu-Containing Catalysts Obtained from Hydro-talcite-Type Precursors ZHENG Liangke;XU Chenghua*;LIANG Wenbiao;LIU Jianying;LIU Jun;DUN Xingjie;GUO Yan;YANG Yingchun 2010, 31 (4):  461-465.  Abstract ( 2274 )   [Full Text(HTML)] () PDF (580KB) ( 1190 )   Cu-containing catalysts from hydrotalcite-type precursors exhibited an excellent catalytic property in furfural hydrogenation. The Cu0 species from the spinel phase was the catalytic active site.

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Preparation of Tungsten Carbide-Titania Nanocomposite and Its Electrocata-lytic Activity SHI Binbin;YAO Guoxin;LI Guohua;;*;ZHENG Yifan 2010, 31 (4):  466-470.  Abstract ( 2476 )   [Full Text(HTML)] () PDF (2364KB) ( 1335 )   The electrocatalytic activity of tungsten carbide-titania nanocomposite was correlated to its crystal phases, and a synergistic effect existed between tungsten carbide and titania in the sample.

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Influence of Microwave Irradiation on Precursor Microstructure and Catalytic Performance of Cu/ZnO/Al2O3 for Slurry Methanol Synthesis LI Zhong*;FAN Hui;ZHENG Huayan;LIU Yan 2010, 31 (4):  471-478.  Abstract ( 2463 )   [Full Text(HTML)] () PDF (5127KB) ( 1437 )   In the aging process of Cu/ZnO/Al2O3 catalyst precursor preparation, microwave irradiation promoted the formation of a (Cu,Zn)5(CO3)2- (OH)6 phase in the precursor, resulting in a high activity and low deactivation rate of the calcined catalyst.

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Influence of Preparation Methods on Structure, Adhesion, and Catalytic Per-formance of CuO-CeO2/Al2O3/FeCrAl Monolithic Catalysts ZENG Shanghong*;SU Haiquan;WANG Yan;LIU Guoyang;WANG Kun;PAN Hui 2010, 31 (4):  479-484.  Abstract ( 2345 )   [Full Text(HTML)] () PDF (2536KB) ( 1253 )   Six preparation methods were used to prepare the CuO-CeO2/Al2O3/FeCrAl monolithic catalyst. The samples prepared by sol-pyrolysis, solution-combustion, and microemulsion methods had good catalytic performance for CO preferential oxidation and high adherence stability between the active species and the FeCrAl monolith.

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Preparation of WO3/TiO2 Nanorod Composites and Its Photocatalytic Activity LIU Yang;WANG Sheng;*;WANG Tao;XU Zhanglian;CHEN Wenxing;JIANG Jie;WEI Jianhong 2010, 31 (4):  485-489.  Abstract ( 2619 )   [Full Text(HTML)] () PDF (797KB) ( 1996 )   The influence of both the properties of TiO2 (crystalline, morphology, and surface state) and the loaded WO3 on the photocatalytic activity of WO3/TiO2-NRs composite was discussed, whose photoactivity was 5 times that of its precursor P25 (TiO2).