...外，反应物 扩散至催化剂与产物扩散离开催化剂的有效距离都可以明显降 低 ，使得反应过程受几何空间扩散限制(diffusion limited) 的因素降至最低，只与化学反应的本质(reaction limited)有 关 △G* 1 △G* 2 24 47 Activation energy change Path change: △G...
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...); 活性金属为贵金属Pd,催化剂成本高 (high catalyst cost); 工程放大效应(scale-up effects); 扩散限制(diffusion confinement); 缺点Pd/Al2O3 蒽醌法双氧水 Pd/MOx/Cordierite (H2O2 production) 新型结构型草酸酯合成催化剂 Monolith Catalyst Pd用量节约8...
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Dispersal limitation cannot explain the formation ofβdiversity completely. Environment gradient, in the region involving in this study, is the main factor which results in the shift in community structure.
3．扩散限制并不能完全解释β多样性的形成，在本研究所涉地域内，环境梯度才是引起群落结构变化的主要原因。
参考来源 - 高寒草甸植物群落α多样性和β多样性形成的机制：是生态位还是中性理论？·2,447,543篇论文数据，部分数据来源于NoteExpress
考虑了快扩散和受扩散限制的能量迁移。
Fast diffusion as well as diffusion-limited energy migration is considered.
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.
用计算机模拟，研究了电场下的团簇-团簇凝聚(CCA)和扩散限制凝聚(DL A)的结构转变。
The structure transitions in cluster cluster aggregation (CCA) and diffusion limited aggregation (DLA) under external electric fields have been investigated by computer simulations.
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