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表面活性组分
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  “表面活性组分”译为未确定词的双语例句
     CHARACTERISTICS OF ACTIVE SURFACE COMPONENTS OF V-Cr-O CATALYSTS USED FOR AMMOXIDATION OF m-XYLENE TO ISOPHTHALONITRILE
     间二甲苯氨氧化V-Cr-O系催化剂表面活性组分特征
短句来源
     The appropriate amount of promoter KOAc addition helps enhancing the performance of catalysts by forming intermediate species Cu_2Cl(OH)_3 in DMC synthesis reaction.
     研究了助剂KOAc对催化性能的影响,发现弱碱性助剂KOAc有利于催化反应活性物种Cu_2Cl(OH)_3的形成,促进表面活性组分之间氧化-还原的循环。
短句来源
     The active component characteristics of the V Cr O catalysts were investigated by means of SEM XRAS, XPS, and TPR.
     采用显微能谱 (SEM XRAS)和X 射线光电子能谱 (XPS)方法分析了V Cr O催化剂表面活性组分的组成及状态 ,并用程序升温还原 (TPR)方法考察了催化剂活性组分的还原特征。
短句来源
     The studies indicated that doping of titania into alumina, silica and zirconia carriers influences the interactions between MoO_3 and γ-A1_2O_3, SiO_2 and ZrO_2, and hence improves the dispersion of MoO_3 over surface of the carriers, promotes reduction of MoO_3,increases amount of active components on the surface and enhances HDS activity of the( catalysts.)
     研究表明,以TiO2调变的Al2O3、SiO2和ZrO2载体能影响MoO3与Al2O3、MoO3与SiO2及MoO3与ZrO2之间的相互作用,改善MoO3在载体表面的分散,促进其还原,有利于提高催化剂表面活性组分的数量,提高催化剂的加氢脱硫活性。
短句来源
     Effects of multi-zeolites of SiO_2-silicalite and silicalite-1, silicalire-2 mixed using various types are studied The results have indicated that the geometric factors of zcolite supports affects strongly the distribution, and the state of active components on the surface of catalysts, and the products distribution of CO hydrogenation.
     本文通过对SiO_2-硅沸石和硅沸石-1、-2不同形式混合载体在催化剂中的作用研究,表明了在一氧化碳加氢反应中,沸石载体的几何效应较强地影响了催化剂表面活性组分的分布和存在状态,从而也影响了反应的产物分布。
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  相似匹配句对
     Surface-active crown ethers
     表面活性冠醚
短句来源
     CHARACTERISTICS OF ACTIVE SURFACE COMPONENTS OF V-Cr-O CATALYSTS USED FOR AMMOXIDATION OF m-XYLENE TO ISOPHTHALONITRILE
     间二甲苯氨氧化V-Cr-O系催化剂表面活性组分特征
短句来源
     It is suggested that the adsorption properties in the mixed systems are determined dominantly by the higher surface active components.
     说明混合体系中的吸附性质主要取决于表面活性高的组分
短句来源
     Study on Surface Activity Mixed Phosphates
     混合磷酸酯的表面活性
短句来源
     Novel Active Cosmetic Ingredients
     最新化妆品组分
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Taking the aim of practical use of perovskite-type catalyst for manufacturing HNO3 through ammonia oxidation, a pumice-supported A1-xAx'CoO3 catalyst with better catalytical activity has been developed. It is found that calcination temperature exerts a great influence on the pore and surface structure of pumice and that certain undesirable impurities, such as Fe, Na and K, are present in raw pumice. Electron microscopic examinations reveal that the surface of pumice granule is bearded and the prick can sinter...

Taking the aim of practical use of perovskite-type catalyst for manufacturing HNO3 through ammonia oxidation, a pumice-supported A1-xAx'CoO3 catalyst with better catalytical activity has been developed. It is found that calcination temperature exerts a great influence on the pore and surface structure of pumice and that certain undesirable impurities, such as Fe, Na and K, are present in raw pumice. Electron microscopic examinations reveal that the surface of pumice granule is bearded and the prick can sinter under calcination. By means of X-ray diffraction, differential thermal and thermogravime-tric analysis as well as pore and surface structure study, the influence of calcinating temperatures of pumice, the effect of surface concentration of active components and the calcinating temperature of supported catalyst on the catalytic behavior for ammonia oxidation are investiga ted. Tt is shown that treatment of raw pumice with 20.% HNO3 and calcinating under temperature 850℃ seem to he necessary. Surface of the pumice coated with La2O3 or LaAlO3 or treated with NH4NO3 to remove the Na+ ions enhance the thermal stability of the supported catalyst and its activity remains unchanged. The concentration of active component (mmol/m2) loading on support plays a significant role in the catalytic, activity of the catalyst (see Fig. 6). It has been proved that the temperature of the perovskite formation on supported catalyst is the same as that in the case of unsupported catalyst, i. e. 850℃. No interaction between support and active component is observed. It is concluded that for this type catalyst, the playing role of pumice is mainly to improve the thermal stability and thus prolonging the working life of the catalyst.

为了氨氧化制硝酸的ABO_3型催化剂的实际应用,研究了其载体化问题。通过筛选和改变处理方法等途径,选出了一种担载性能良好的载体——浮石。对A_(1—x)A'_xCoO_(3-)浮石催化剂,用X射线衍射、热差热重分析等方法,考察了载体焙烧温度对催化剂活性组分形成过程的影响及催化剂表面活性组分浓度和载体催化剂焙烧温度对氨氧化活性的影响。结果表明,催化剂活性组分并未因载体而发生改变,氨氧化的活性也不变,而热稳定性则有所提高。

Effects of multi-zeolites of SiO_2-silicalite and silicalite-1, silicalire-2 mixed using various types are studied The results have indicated that the geometric factors of zcolite supports affects strongly the distribution, and the state of active components on the surface of catalysts, and the products distribution of CO hydrogenation.

本文通过对SiO_2-硅沸石和硅沸石-1、-2不同形式混合载体在催化剂中的作用研究,表明了在一氧化碳加氢反应中,沸石载体的几何效应较强地影响了催化剂表面活性组分的分布和存在状态,从而也影响了反应的产物分布。

A series of MoNiP/Al 2O 3 catalysts were prepared by keeping the active components (Mo, Ni and P) constant and varying the preparation conditions (calcination procedure and temperature). PASCA (positron annihilation spectroscopy for chemical analysis), XPS (X ray photoelectron spectroscopy), STEM (scanning transmission electron microscopy) and microreactor were applied to characterize the dispersion states of the active components on the surface of the catalysts. The results indicate that the HDN activity...

A series of MoNiP/Al 2O 3 catalysts were prepared by keeping the active components (Mo, Ni and P) constant and varying the preparation conditions (calcination procedure and temperature). PASCA (positron annihilation spectroscopy for chemical analysis), XPS (X ray photoelectron spectroscopy), STEM (scanning transmission electron microscopy) and microreactor were applied to characterize the dispersion states of the active components on the surface of the catalysts. The results indicate that the HDN activity of the catalysts is associated with the dispersion degrees of both Mo and Ni. Besides, higher HDN activity is also related to the dispersion of Mo and Ni with a fixed Mo/Ni molar ratio.

采用PASCA,XPS,STEM和微型反应色谱等技术,研究了一系列MoNiP/Al2O3催化剂表面活性组分(Mo和Ni)的分散状态及其对催化剂HDN(加氢脱氮)反应活性的影响.结果表明,MoNiP/Al2O3催化剂的HDN反应活性与Mo和Ni两种组分的分散状态及总分散度有关,而这又取决于催化剂的制备条件和步骤.此外,Mo和Ni以一定的形式(例如生成Ni-Mo-O相)存在,从而以固定的Mo/Ni摩尔比均匀地分散在表面上,有利于提高催化剂的HDN反应活性

 
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