研究的区域包括阳极和阴极的流道、扩散层和催化层以及质子交换膜在内的整个单电池。
The studied domain consists of flow channels, diffusion layers and catalyst layers of both the anode and cathode, and the membrane.
研究的区域包括阴极和阳极的流道、扩散层、催化层和质子交换膜。
The studied domain consists of fluid channels, diffusion layers and catalyst layers of anode and cathode, and membrane.
首先，对MEA的制备及优化研究，主要从热压工艺参数、催化层组分优化、扩散层和质子交换膜的选择等方面考虑的。
First, Fabrication and optimization of MEA are studied in many aspects, for example hot press parameters, components of catalyst layer and diffusion layer, PEM thickness, etc.
以锌空气电池气体扩散电极为研究对象，采用分层添加催化剂的方式研究了改变催化层位置对气体扩散电极放电性能的影响。
Take gas diffusion electrode of zinc-air battery for example and add catalyst by layers, we studied the effect of changing catalyst layer location on the performance of gas diffusion electrode.
将气相生长碳纤维(VGCF)加入到锌空气电池空气电极催化层中，通过热压成型制备三相气体扩散电极。
Vapor grown carbon fiber (VGCF) was mixed in the catalyst layer of the air electrode for zinc-air battery, prepared by hot-pressing method.
电极的峰电流与扫描速度的平方根成正比，电极上的传质过程受扩散控制，对酶催化反应的动力学机制进行了探讨。
The peak current is proportional to square root of scan rate, which indicated that the procedure is controlled by diffusion. The dynamic mechanism of the enzyme catalyzed reaction was discussed.
催化剂的扩散与湍流扩散系数、风场分布相对应，水平扩散范围大于垂直扩散范围。
On the other hand, the diffusion is corresponded with coefficients of turbulent diffusion and wind distribution, the range of horizontal diffusion is greater than that of vertical diffusion.
金属在催化剂上的沉积规律与金属在原油中的存在形态、催化剂性质及金属化合物在催化剂中扩散和分解速率有关。
The metal deposit rule was depended on the patterns of the metals in crude oil and the property of the catalyst as well as the diffusion and decomposition rates of metal compounds in the catalyst.
而对于选择性，前者提高，后者则会导致降低，即控制反应扩散性能有利于提高催化选择性。
A high flow rate and pressure of hydrogen was in favor of the catalytic reduction of nitrate, but not benefit for the selectivity.
研究了18种具有不同孔结构参数的铜基甲醇合成粒状催化剂孔隙率对有效扩散系数的影响。
The influence of porosity on the effective diffusion coefficients was studied for 18 of Cubased catalysts, which have the different pore structure parameters.
通过对阳极扩散层和催化剂层的疏水处理，降低了阳极产生的CO2导致的催化活性比表面积损失，有效地提高了电池性能。
The decrease of active surface area in the anode caused by CO2 accumulation is reduced through treating the diffusion layer and catalyst layer with PTFE, resulting in increased DMFC performance.
随着催化剂循环强度的增加，移动床与固定床在气体扩散规律上的偏离程度增大。
The difference of gas diffusion regularity between moving bed and fixed bed enlarged with the increase of catalyst recycle intensity.
介孔允许大分子进入孔道同时具有较小的扩散限制，微孔则作为小分子的吸附场所，使小分子能够很好的择型催化。
The mesoscale pores are benefit to the diffusion of larger molecules with low resistance, while the micro-scale pores can provide effective catalytic sites of small molecules with high selectivity.
计算结果表明，银催化剂床层空隙率的减小或操作空速的增加有利于减弱该催化反应过程中外扩散效应的影响。
The obtained results showed that the effect of external diffusion could be slackened by the decrease of fixed-bed voidage and the increase of space velocity.
作为单颗粒催化剂上反应-扩散过程通用模拟软件开发的基础，该模型明显优于其他常规模型。
As the foundation for developing general software simulating the diffusion - reaction processes involved over a pellet of catalyst, this model has obvious advantage over others used usually.
通过甲基叔丁基醚工业塔实例，阐述了液相轴向、径向扩散系数与液相有效流速对催化精馏过程的影响。
An example was given to show the influence of the radial, axial diffusion and actual liquid velocity on the performance of an actual MTBE catalytic distillation column.
因此，强化固液间的分子扩散和界面更新是提高树脂催化蔗糖溶液水解速率的途径。
So, enhance the molecule diffusion and the interphaserenovation is the way to increase the rate of hydrolysis.
利用催化剂线源扩散模式确定人工增雨作业后的目标区，并采用非随机活动对比区和目标区分层历史回归的方法估算作业效果。
The regression analysis method of non stochastic process and movable control over the target area was used to assess seeding effect. The target area was determinated by diffusion equation.
结果表明，催化剂的碱性，氧扩散速率等对催化剂的活性均有影响。
It was demonstrated that both the lattice oxygen mobility and Surface basicity affected the performance of the catalyst.
该双催化层阴极结构有利于氧气扩散和水的排出，提高了电池性能。
The double-layered structure was beneficial for oxygen diffusion and water removal, and thus improved the DMFC performance.
因为纤维催化剂比粒状催化剂的外表面积大得多，而直径却小得多，因而予计对扩散控制的快速表面反应是有利的。
Because of its much larger external surface area and much smaller pore diameter than granular carriers, it is expected to benefit diffusion-controlled fast surface reactions.
在甲醇酸性体系中，PAN-PPO对甲醇具有较好的电催化活性，此反应受扩散控制。
In comparison with PAN, PAN-PPO showed a high electrocatalytic activity for oxidation of methanol and the electro-oxidation reaction was controlled by the diffusion step.
利用超临界流体良好的溶解性能和扩散性能可以很好地解决非均相催化剂的失活问题。
The good properties of solution and diffusion of supercritical fluid are helpful for removing the deactivation of catalysts in catalytic reaction.
对于颗粒内扩散控制的催化反应过程，采用异形催化剂可以显著提高表观反应速度；
When intra-particle diffusion limitation is important, the use of non-cylindrical catalysts can increase superficial reaction rate markedly.
在低转速时是扩散控制，达一定转速后催化反应为控制步骤。
It is diffusion control at low rotating rate; catalysis reaction is control step when rotating rate reached some degree.
对于O_2和CO的表面催化反应，我们引入了一个包括O和CO的扩散的不可逆zgb扩散模型，非常自然地消除了二级相变点。
We introduce a diffusion-ZGB model including the diffusion of o and co for the surface catalytic reaction of O2 and co, and eliminate the second-order phase transition naturally.
研究了18种具有不同孔结构参数的粒状铜基甲醇合成催化剂孔隙率对有效扩散系数的影响。
The influence of porosity of 18 kinds of Cu - based catalysts of methanol synthesis on the effective diffusion coefficients is studied. The catalysts have the different parameters of pore structure.
本文利用有限差分法对飞机播撒催化剂的扩散问题进行了求解。
By using the finite-difference method, a solution is obtained in this paper to the diffusion problem of the catalytic agent released by the airplane.
同时，催化剂的活性和选择性受到扩散限制和质量传输的影响。
The reduction activity of nitrate and the formation of ammonium are mainly controlled by the diffusion limitation and the mass transfer of the reactants.
讨论了催化剂内部关键组分的摩尔分数分布情况及温度对内扩散效率因子的影响。
The effect of concentration profile of key components in catalysts and temperature on internal diffusion efficiency factors were also discussed.
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