金属分散度

一种提高Mo-Ni/Al2O3催化剂金属分散度的方法研究

Study on Method of Enhancing the Dispersion of Mo , Ni onto the Mo Ni / Al 2O 3 Catalyst

用H2-O2滴定法测得0.3（wt）%Pd/Al2O3的金属分散度为22.0%。

The metal dispersion of 0.3 % Pd / Al_2O_3 is 22.0 % measured by H_2-O_2 titration .

结果表明，与普通浸渍法相比，超声浸渍法制备的负载型Pd催化剂金属分散度明显提高，因而对蒽醌加氢反应表现出较高的催化活性。

The results show that the activity of the supported catalysts prepared with ultrasonic treatment for anthraquinone hydrogenation is higher than those without ultrasonic treatment . Methods : WHO standard bioassay ( dipping test ) .

介绍了采用脉冲色谱技术，用氢滴定吸附在钯/炭（Pd/C）催化剂中Pd表面上的氧，从而建立了测定催化剂上金属分散度的方法。

This paper introduced the determination method of metal dispersion degree in Pd / C catalyst with pulse chromatogram technology to adsorb the oxygen in Pd surface of the Pd / C catalyst with hydrogen titration .

Mo-Ni-P浸渍液性质与催化剂中金属分散度的关系

Relationship Between Property of Mo-Ni-P Solution of Impregnation and Dispersity of Metal on Catalyst

利用TPD（或TP）-IR动态方法，详细研究了由Rh4（CO）（12）衍生的Rh4/Al2O3上金属分散度、CO覆盖和表面碳对CO吸附类型的影响。

Effects of dispersion of Rh , CO coverage and surface carbon on the adsorption types of CO over Rh4 / Al2O3 derived from Rh4 ( CO ) 12 have been investigated in detail by using TPD ( or TP ) - IR dynamic method .

脉冲色谱氢氧滴定法测定Pd/C催化剂上的金属分散度

Determination of Metal Dispersion Degree in Pd / C Catalyst with Pulse Chromatogram Hydro-oxygen Titration Method

利用化学吸附仪中的脉冲吸附技术还可对催化剂的酸性、表面金属分散度、金属与载体的相互作用等进行研究。

In addition , its pulse chemisorption function can provide valuable information about surface acidity , surface metal dispersion and the interaction between metal and support .

La2O3有增加金属Ni分散度的作用，其含量低于6%时，催化活性随La含量增加而上升。

The lanthana increased the dispersity of metallic Ni and the catalytic activity increased with the increase of La_2O_3 content ( in the range of 0-6 % ) .

通过加氢还原制得的催化剂金属的分散度比液相甲醛还原制得的高，加氢高温还原更有利于金属的分散。

The metal dispersion of catalysts through hydrogenation was better than liquid formaldehyde reduction , high temperature hydrogenation reduction is better for the dispersion of metal .

Pd/TNT系列催化剂的活性主要取决于金属的分散度，受载体形态与结晶度的两方面的影响，而强金属与载体相互作用可以提供活性金属组分Pdn+有利于催化反应活性。

The activity of Pd / TNT mainly depended on the metal dispersion , morphology and crystallinity of the catalyst . Additionally , the presence of Pdn + resulting from the strong metal-interaction between metal and support could markedly enhance catalytic activity .

引入助剂P元素，能够对载体酸性质进行可控调变，同时能削弱活性金属和载体之间的强相互作用，提高金属活性组份分散度。

P additive could adjust carrier activity and weaken the strong interaction between active metal and carrier , increasing dispersion of metal active components .

对交联蒙脱土不同载金属方法的产物进行了X射线衍射分析、比表面和金属分散度测定，以及活性评定。

Influence of various metal-loading methods on the activity of the cross-linked smectite ( CLS ) catalysts has been investigated by XRD , surface area and palladium dispersion determination .

这个相互作用限制了焙烧过程中金属颗粒的团聚，增强了金属与载体的相互作用，提高了金属的分散度。

The oxides interact with the support , which improve the dispersion and metal-support-interaction , and restrain the agglomeration in the calcinations .