负催化剂

The supported catalyst was systematically optimized with respect to catalyst dosage and calcination temperature.

实验了催化剂的负载量和煅烧温度对催化剂活性的影响。

The electronegativity of metal in the catalyst effectively influences the activity of catalyst.

催化剂的中金属原子的电负性是影响催化剂活性的重要因素。

The relative catalytic activity depends on the electronegativity of the catalyst involved.

催化剂的催化活性大小取决于加入催化剂的电负性大小。

We have prepared Cu/SiO2 catalyst by impregnation method and researched their catalytic performance over the hydrogenolysis glycerol to 1,2-PDO.

取得的主要结果如下：采用浸渍法制备了具有不同铜负载量的Cu/SiO2催化剂并考察了催化剂的反应性能。

The state of Cu species determine the catalytic performance in hydroxylation of benzene.

从XRD、UV-vis和H_2-TPR表征结果可见，催化剂制备中的焙烧温度、Cu的负载量和ZSM-5的硅铝比可以改变Cu物种与载体的相互作用强弱及Cu物种的分散状态，是影响催化剂苯羟基化反应性能的重要因素。

Synthesis of dipropyl carbonatefrom dimethyl carbonateand propyl alcohol by transesterification was studied.

用丙醇和碳酸二甲酯液相酯交换合成碳酸二丙酯，筛选出催化性能和稳定性较好的KOH/Naβ固体碱催化剂，考察了KOH负载量对催化剂酯交换性能的影响。

Separation of Cadmium by Iodide-4-Aminoantipyrine-Propyl Alcohol Extraction System in the Presence of Ammonium Sulphate;2. Synthesis of dipropyl carbonatefrom dimethyl carbonateand propyl alcohol by transesterification was studied.

用丙醇和碳酸二甲酯液相酯交换合成碳酸二丙酯，筛选出催化性能和稳定性较好的KOH/Naβ固体碱催化剂，考察了KOH负载量对催化剂酯交换性能的影响。

In this study, SiC as a carrier, Pt reactive component, Prepared by impregnating a series of Pt/SiC catalyst and influence of temperature, space velocity, Pt loading and auxiliaries Pt/SiC catalyst for the activity.

本研究以碳化硅为载体，Pt为活性组分，通过浸渍法制备了一系列的Pt/SiC催化剂，并考察了焙烧温度、空速、Pt负载量以及助剂对Pt/SiC催化剂的活性的影响。

XRD and TPR analysis prove that the crystal structure and reducibility of the catalysts are affected by nickel loading.

XRD和TPR 表征结果显示，催化剂的晶体结构和还原特性也与催化剂上镍的负载量有关。

The main contents are as follows: A series of MCM-41-supported nickel phosphide catalysts with initial Ni/P atomic ratio of 0.5 - 2 and loading level of 10 - 40 wt % in the oxidic precursors were prepared by an in-situ reduction method. Their catalytic performances were evaluated in the HDN of quinoline.

论文内容主要包括：用原位还原的方法制备了MCM-41负载的磷化镍催化剂，考察了不同Ni／P摩尔比和负载量对催化剂结构和喹啉HDN反应活性的影响。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。