Front Cover: Supported catalysts for polyolefins behave very differently in slurry and gas-phase reactors. A systematic modeling study is executed to investigate how the presence of a diluent affects the equilibrium concentration of reactants in the polymer phase surrounding the active sites. The thermodynamic simulations agree with the experimental trends and can explain the distinct performance of catalysts in the two polymerization media. This is reported by Arash Alizadeh, Vasileios Touloupidis, João B. P. Soares in article number 2100006.

中文翻译：

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大分子。反应。英。5/2021

封面：聚烯烃负载型催化剂在淤浆和气相反应器中的表现非常不同。执行系统建模研究以研究稀释剂的存在如何影响活性位点周围聚合物相中反应物的平衡浓度。热力学模拟与实验趋势一致，可以解释催化剂在两种聚合介质中的不同性能。这是由 Arash Alizadeh、Vasileios Touloupidis、João BP Soares 在文章编号 2100006 中报道的。