Removal of Organochlorine from Model Oil Using Mg-Modified ZSM-5 Zeolite:Dechlorination Performance,Regeneration,and Thermodynamics

作     者：Cheng Xingyuan Gu Jie Huang Bingtian Bing Liancheng Han Dezhi Wang Guangjian Wang Fang Cheng Xingyuan;Gu Jie;Huang Bingtian;Bing Liancheng;Han Dezhi;Wang Guangjian;Wang Fang

作者机构：State Key Laboratory Base for Eco-Chemical Engineering in College of Chemical EngineeringQingdao University of Science and TechnologyQingdaoShandong 266042China 

出 版 物：《China Petroleum Processing & Petrochemical Technology》 (中国炼油与石油化工（英文版）)

年 卷 期：2023年第25卷第2期

页      面：24-32页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：This work was financially supported by the Natural Science Foundation of Shandong Province(ZR2021MB134 and ZR2022MB019) the National Natural Science Foundation of China(22008131) the Talent Fund for Province and Ministry Co-construction Collaborative Innovation Center of Eco-chemical Engineering(STHGYX2220) the Opening Fund of State Key Laboratory of Heavy Oil Processing(SKLOP202002002) 

主　　题：adsorption dechlorination ZSM-5 zeolite metal modification thermodynamics 

摘      要：Various metal-modified ZSM-5 zeolite adsorbents prepared by the impregnation method were applied to the removal of organic chlorides from model *** adsorption performance and regeneration stability were investigated by static adsorption *** morphologies,structural features,and physicochemical properties of the adsorbents were characterized by X-ray diffraction,Brunauer-Emmett-Teller analysis,NH3 temperature-programmed desorption,scanning electron microscopy,transmission electron microscopy,and pyridine adsorption infrared *** Mg/ZSM-5 zeolite adsorbent possessed a relatively high specific surface area and good metal dispersion and exhibited the best dechlorination and regeneration *** characterization results revealed that introduction of the metal exerted a significant influence on the acidic properties of the catalyst surface.A decrease in the ratio of Brønsted acidic sites to Lewis acidic sites and an increase in the amount of moderately acidic sites were confirmed to be responsible for the excellent adsorption performance of the Mg-modified ZSM-5 ***,the Langmuir adsorption isotherm model was applied to study the adsorption equilibrium and thermodynamics of the Mg/ZSM-5 adsorbent under mild *** results revealed that the removal of 1,2-dichloroethane by the Mg/ZSM-5 adsorbent was endothermic,spontaneous,disordered,and primarily involved physical adsorption.