Low-concentration and multi-component NMHCs capture from oil field exhaust using porous ZIF-8/iso-hexadecane slurry

作     者：Kun Li Han Tang Jin Cai Chun Deng Bei Liu Yunlei Peng Changyu Sun Guangjin Chen 

作者机构：State Key Laboratory of Heavy Oil ProcessingChina University of PetroleumBeijing102249China 

出 版 物：《Green Chemical Engineering》 (绿色化学工程（英文）)

年 卷 期：2024年第5卷第2期

页      面：245-256页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081702[工学-化学工艺] 0817[工学-化学工程与技术] 08[工学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.22278429 and 22127812) Beijing Science and Technology Program,China(No.Z181100005118010) Science Foundation of China University of Petroleum,Beijing(No.2462021QNXZ011) State Key Laboratory of Heavy Oil Processing,China University of Petroleum 

主　　题：VOCs capture NMHCs capture MOFs ZIF-8 Porous slurry 

摘      要：Non-methane hydrocarbons(NMHCs)are a common type of volatile organic compounds(VOCs)pollutant in the petrochemical industry and have attracted widespread attention because of their adverse health effects and environmental *** this paper,we report a new porous slurry formed with zeolitic imidazolate framework-8(ZIF-8)and iso-hexadecane to capture the low-concentration and multi-component NMHCs(mainly ethane(C_(2)H_(6)),propane(C_(3)H_(8)),and n-butane(n-C_(4)H_(10)))from the oil field *** sorption capacity of C_(2)H_(6)in the slurry is significantly higher than that of nitrogen(N_(2))and methane(CH_(4)).Moreover,the slurry demonstrated a clear advantage for C_(2)H_(6)over N_(2)and CH_(4)in competitive adsorption through the pressure-drop *** the NMHCs capture experiments,the C_(3)H_(8)and n-C_(4)H_(10)concentrations after purification can be reduced to below 100 ppm,while the C_(2)H_(6)concentration can reach approximately 180 *** encouragingly,in the breakthrough tests,the slurry exhibits a perfect kinetic separation selectivity for multi-component ***,to avoid structural collapse of ZIF-8 material during long-term use in acidic and wet environments,a certain amount of 2-methylimidazole was retained in the slurry as a protective agent in the material synthesis *** this way,the ZIF-8 materials in the slurry can retain the stable characteristic structure in an aqueous and acidic environment and keep the capture capacity for NMHCs without *** believe the porous ZIF-8/iso-hexadecane slurry is a promising capture agent for low-concentration and multi-component NMHCs with strong purification capacity and stability.