文献类型：期刊文献

英文题名：Kinetic Study on the Reaction and Deactivation Behavior of Hydrodearomatization Catalysts During Initial Use

作者：Jiang, Hongbo[1];Zhang, Ziyi[1];Chen, Wenbin[2];Lu, Yutao[2];Liu, Feng[2];Zhang, Rui[2];Qin, Kang[2]

机构：[1]East China Univ Sci & Technol, Res Inst Petr Proc, Shanghai 200237, Peoples R China;[2]SINOPEC Res Inst Petr Proc Co LTD, Beijing 100083, Peoples R China

年份：2025

卷号：10

期号：28

起止页码：30501

外文期刊名：ACS OMEGA

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001526027400001)】；

基金：The authors would like to acknowledge the funding support provided by the National Key Research and Development Program of China (Grant No. 2022YFA1504400).

语种：英文

摘要：Amidst increasing environmental regulations, reducing the aromatic content in diesel oil has become a challenge in the refining industry. This study investigated the kinetics of hydrodearomatization and catalyst deactivation on a CoMo/Al2O3 catalyst using a fixed-bed reactor in the lab. Experiments were conducted with blended feedstocks of straight-run diesel and catalytic cracking diesel. A lumped kinetic model considering the influence of competitive adsorption was built up, and the model parameters were estimated using optimization methods, achieving satisfactory results. Research shows that aromatic saturation is reversible, with optimal conditions favoring saturation, including elevated pressure, reduced liquid hourly space velocity, and controlled temperature (360 degrees C). Based on the established reaction kinetic model, a catalyst deactivation kinetic model was proposed, correlating catalyst activity with feedstock properties and process severity, revealing the activity change of the catalyst in the early stage of use: increased temperature and decreased liquid hourly space velocity accelerate the deactivation of catalysts in all hydrodearomatization reactions, while feedstock and reaction pressure show different trending effects on catalyst deactivation for different types of reactions.