The preparation of catalysts with adequate stability for the -hexane hydroisomerization reaction is always a challenge in refineries. Therefore, in this work, the metal-organic framework UiO-66, heteropoly phosphomolybdic acid (HPMo), and bifunctional (Pd + Pt)/HPMo/UiO-66 samples were synthesized, characterized by experimental techniques, and tested in the n-hexane hydroisomerization reaction. As a result, the microporous (0.2%Pd+0.3%Pt)/30%HPMo/UiO-66 bifunctional catalyst exhibited an iso-hexane selectivity of 86% and -hexane conversion of 72.1% after 36 h of reaction time. In addition, the Langmuir-Hinshelwood model was used to examine the kinetics of this reaction due to the inhibitory effect of hydrogen. The results provided an acceptable fit to the experimental data and allowed the determination of the kinetic parameters. Accordingly, the apparent activation energy of this bifunctional catalyst and the adsorption heats of hydrogen and -hexane were calculated at 26.27, −16.12, and −7.82 kJ mol, respectively.

中文翻译：

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Pd-Pt 促进的 HPMo/UiO-66 酸催化剂用于正己烷加氢异构化，以实现更高质量和更清洁的燃料生产：催化活性和动力学模型

制备具有足够稳定性的用于正己烷加氢异构化反应的催化剂始终是炼油厂面临的挑战。因此，在这项工作中，合成了金属有机骨架UiO-66、杂多磷钼酸（HPMo）和双功能（Pd + Pt）/HPMo/UiO-66样品，通过实验技术进行表征，并在n-己烷加氢异构化反应。结果，反应36 h后，微孔(0.2%Pd+0.3%Pt)/30%HPMo/UiO-66双功能催化剂的异己烷选择性为86%，正己烷转化率为72.1%。此外，由于氢的抑制作用，Langmuir-Hinshelwood 模型被用来检查该反应的动力学。结果提供了与实验数据的可接受的拟合，并允许确定动力学参数。因此，计算出该双功能催化剂的表观活化能以及氢气和正己烷的吸附热分别为26.27、-16.12和-7.82 kJ mol。