The influence of additives La 2O 3, MgO on the Nickel dispersity of a steam-reforming catalyst was studied by means of hydrogen chemisorption on metallic surface.

1、

The influence of the reaction conditions such as temperature, pressure and H2/ CO2 ratio on the catalytic properties were also well studied. XPS and FT-IR methods were used to characterize the catalyst.

讨论了反应温度、压力和H2/CO2比对催化剂活性和选择性的影响，并用XPS和FT-IR对催化剂进行了表征。

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2、

In this dissertation, the effect of promoters on the performance of Cu/ SiO2 catalyst and the preparation methods of supported copper catalyst were studied for the direct synthesis of indole.

主要研究了助剂对Cu／SiO2催化剂活性、选择性和稳定性的作用及Cu／SiO2催化剂制备方法的影响。

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3、

Under typical FCC operating conditions, the removal efficiency of SOx reaches 50% and has little effect on activity of the catalyst.

结果表明，LST1液体硫转移助剂在典型的催化裂化工艺条件下，SOx脱除率达50%左右，对催化剂活性基本没有影响。

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4、

Effects of crystal modifications of mgcl_2 on performance of supported catalyst for propylene polymerization

MgCl2晶型对丙烯聚合MgCl2载体催化剂活性的影响

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5、

The so called "synergistic effect" was caused by directional transfer of intermediate compounds from Y zeolite to H~ zeolite, resulting in enhanced activity and isomerization reaction simultaneously.

其中Y型分子筛和Hβ沸石之间具有仂、同作用，结果是催化剂活性和异构性能同时提高，原因可能是反应中间产物存在由HY向Hβ沸石的定向迁移现象。

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The photocatalytic activity of the supported nanometer-sized TiO2 photocatalyst is significantly higher than that of TiO2 powder catalyst and decreased little after used for about 10 times.

该催化剂活性较高，明显优于粉体纳米TiO2光催化剂，重复使用10次左右，该催化剂的活性无明显下降。

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7、

The activity of the catalyst is discussed with respect to the hydrophobic property of the support by the NMR parameters of water adsorbed on the support.

用活性炭载体吸附水的NMR参数讨论了载体的亲水性和催化剂活性的关系。

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8、

Effect of Impregnation Sequence on Catalytic Activity and Desorption Property of Ag-Pd/ Ce_ ( 0.8) Zr_ ( 0.2) O_2 Catalyst

浸渍顺序对Ag-Pd/Ce（0.8）Zr（0.2）O2催化剂活性及脱附性能的影响

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9、

In the system with sodium sulfide and sodium sulfite as sacrificial agent, cadmium sulfide played a major role in the catalytic activity.

在加入牺牲剂的体系下CdS对催化剂活性的影响起到了主要作用。

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10、

There must be certain reasons for its improving the catalytic activity of the catalysts.

而CeO2则堆积在氧化铁表面，它对氧化铁晶粒的长大作用不大，它使催化剂活性大大提高必定有其它因素起作用。

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11、

Three-composite system ABC had the highest methanol conversion of 74.6% and its active period was 2.5 times of single promoter A' s.

ABC三元促进剂系统，甲醇最高转化率达746%，催化剂活性期是使用单一促进剂A的25倍。

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12、

Activities of catalyst made by surface treated support were higher than not treated support ( COD removal increased about 10%).

经过表面处理的载体制备的催化剂活性显著提高（COD去除率增加约10%）。

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13、

Protection of catalyst activity and restraint against SO2 and H2S are realized thoroughly from chemical reaction.

从化学反应的根本上实现了对催化剂活性的保护和对SO2、H2S的抑制。

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14、

It is found that the addition of Pd with different methods has influence on the performance of the catalysts.

发现Pd的添加方法不同，所得催化剂活性有差别。

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15、

Effect of CO and Ni on hydrotreating activity of mop/ γ-al_2o_3 hydrofining catalyst

钴和镍对MoP/γ-Al2O3加氢精制催化剂活性的影响

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16、

Preparation process of active species of Ni catalyst system for br

BR用镍系催化剂活性种制备技术的改进

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17、

The influence of Ce content on HDS activity of Pd-CeO2/ Al2O3 was studied.

研究了Ce含量对Pd／Al2O3催化剂活性的影响。

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18、

The nature of active centers of pt/ al_2o_3 catalyst characterized by sulfur titration

用硫滴定方法表征Pt/Al2O3催化剂活性中心的性质

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19、

Effect of Fe_2O_3 Crystalline Phase on Activity of Fe-Cr system Medium Temperature Water-Gas Shift Catalysts

Fe2O3晶型对铁-铬系中温变换催化剂活性的影响

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Characterization of the Concentrations of Active Sites for Co-Mo HDS Catalysts by Dynamic Oxygen Chemisorption

Co～Mo系加氢脱硫催化剂活性中心的动态氧吸附表征

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