Abstract The design of hybrid pellet catalysts for dehydrogenation and metathesis of propane to olefins was investigated. Reaction kinetics and mathematical models of pellet catalysts in a reactor were developed and simulated using gPROMS. Three types of pellet catalysts including uniformly mixed, dehydrogenation-core (MDM) and dehydrogenation-shell (DMD) were compared with physically mixed pellet catalysts. A sensitivity analysis of operating conditions, ratios, types and sizes of pellet catalysts were performed to determine the optimal parameters offering a maximum alkene yield. The most suitable pellet catalyst type was DMD. Depending on operating conditions, the optimal DMD had a core metathesis diameter of between 0.28 and 3.43 mm, with spherical particles between 1 and 7 mm in diameter. The optimal DMD showed increased alkene yield up to 43%, while alkene selectivity improved by 25–35% from the base case. The amount of dehydrogenation catalysts reduced from the base case by approximately 59%.

中文翻译：

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WO3/Si-Al和PtIn/水滑石的混合颗粒催化剂设计通过脱氢和复分解反应从丙烷生产烯烃

摘要 研究了丙烷脱氢和烯烃复分解杂化球团催化剂的设计。使用 gPROMS 开发和模拟了反应器中颗粒催化剂的反应动力学和数学模型。将均匀混合、脱氢核（MDM）和脱氢壳（DMD）三种颗粒催化剂与物理混合颗粒催化剂进行了比较。对操作条件、比率、类型和颗粒催化剂的尺寸进行了敏感性分析，以确定提供最大烯烃产率的最佳参数。最合适的颗粒催化剂类型是 DMD。根据操作条件，最佳 DMD 的核心复分解直径在 0.28 到 3.43 毫米之间，球形颗粒的直径在 1 到 7 毫米之间。最佳 DMD 显示烯烃产率提高至 43%，而烯烃选择性比基本情况提高了 25-35%。脱氢催化剂的用量比基本情况减少了大约 59%。