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Evolution of Specific Heat Capacity with Temperature for Typical Supports Used for Heterogeneous Catalysts
Processes ( IF 3.5 ) Pub Date : 2020-08-01 , DOI: 10.3390/pr8080911
Xiaojia Lu , Yanjun Wang , Lionel Estel , Narendra Kumar , Henrik Grénman , Sébastien Leveneur

Heterogeneous catalysts are widely used in the chemical industry. Compared with homogeneous catalysts, they can be easily separated from the reaction mixture. To design and optimize an efficient and safe chemical process one needs to calculate the energy balance, implying the need for knowledge of the catalyst’s specific heat capacity. Such values are typically not reported in the literature, especially not the temperature dependence. To fill this gap in knowledge, the specific heat capacities of commonly utilized heterogeneous catalytic supports were measured at different temperatures in a Tian–Calvet calorimeter. The following materials were tested: activated carbon, aluminum oxide, amberlite IR120 (H-form), H-Beta-25, H-Beta-38, H-Y-60, H-ZSM-5-23, H-ZSM-5-280, silicon dioxide, titanium dioxide, and zeolite 13X. Polynomial expressions were successfully fitted to the experimental data.

中文翻译:

非均相催化剂典型载体比热容随温度的变化

非均相催化剂广泛用于化学工业。与均相催化剂相比,它们可以很容易地从反应混合物中分离出来。为了设计和优化一种高效,安全的化学过程,需要计算能量平衡,这意味着需要了解催化剂的比热容。这样的值通常在文献中没有报道,特别是没有温度依赖性。为了填补这一知识空白,在Tian-Calvet量热仪中,在不同温度下测量了常用的多相催化载体的比热容。测试了以下材料:活性炭,氧化铝,琥珀色IR120(H型),H-Beta-25,H-Beta-38,HY-60,H-ZSM-5-23,H-ZSM-5- 280,二氧化硅,二氧化钛和13X沸石。
更新日期:2020-08-01
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