Abstract
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.
Highlights
Catalysts play a crucial role in the modern chemical industry, and indirectly the development of society
Heterogeneous catalysis contributes to about 90% of chemical production processes and to more than 20% of all industrial products [8]
Eleven commonly utilized catalytic materials, ranging from gel-type anion exchange resins to pure alumina, were studied in a wide temperature range (313–453 K), and the results are shown in Temperature (T) a
Summary
Catalysts play a crucial role in the modern chemical industry, and indirectly the development of society. There are around 30,000 different raw materials and chemical intermediates that are synthesized by using catalysts. These materials are related to people’s food, clothing, and housing, and involve modern high-tech fields such as information transmission, network technology, aerospace [1,2,3], and bioengineering [4,5]. Researchers are committed to developing more efficient, selective, less expensive, and greener industrial catalysts in order to upgrade current chemical production technologies. The effect of the heat capacity of catalysts on large-scale chemical processes has not received much attention in the literature, even though the thermodynamic properties vary significantly between different catalysts
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