丙烯醛
化学
催化作用
吸热过程
甘油
脱水
扩散
反应速率常数
脱水反应
物理化学
热力学
动能
反应速率
反应机理
反应级数
活化能
动力学
有机化学
吸附
生物化学
物理
量子力学
作者
Amin Talebian‐Kiakalaieh,Nor Aishah Saidina Amin
标识
DOI:10.1016/j.renene.2017.07.096
摘要
The thermo-kinetic study of gas-phase glycerol dehydration reaction using a supported γ-Al2O3 nanoparticle based solid catalyst (SiW20-Al/Zr10) has been investigated. The kinetic model was established based on the reaction mechanism, taking into account two parallel reactions of glycerol degradation into acrolein or acetol. Reaction rate constants and activation energies for all the products in the glycerol dehydration reaction were determined at various reaction temperatures (280–340 °C). The first-order kinetic model and the experimental data fitted-well. Also, based on thermodynamic analysis the values of ΔH‡, ΔS‡, and ΔG‡ for all the endothermic reactions were determined by Eyring equation. Finally, the absence of internal and external diffusions were confirmed by Weisz-Prate Criterion (CWP <1) and Mear's Criterion (CM < 0.15), respectively for pellet diameters less than dP < 5 μm. The results from this study are useful for future reactor modeling and simulation work.
科研通智能强力驱动
Strongly Powered by AbleSci AI