Fabrication of nickel oxide functionalized zeolite USY composite as a promising adsorbent for CO_(2) capture  

作　　者：Jipeng Dong Fei Wang Guanghui Chen Shougui Wang Cailin Ji Fei Gao 

机构地区：[1]Shandong Key Laboratory of Multiphase Fluid Reaction and Separation Engineering,College of Chemical Engineering,Qingdao University of Science and Technology,Qingdao 266042,China [2]Department of Chemical Engineering,Qingdao University of Science and Technology,Gaomi 261500,China

出　　处：《Chinese Journal of Chemical Engineering》2022年第6期207-213,共7页中国化学工程学报（英文版）

基　　金：This work was funded by the Qingdao Science and Technology Plan Application Foundation Research Project(19-6-2-28-cg).

摘　　要：Adsorption process is considered to be the most promising alternative for the CO_(2) capture to the traditional energy-intensive amine absorption process,and the development of feasible and efficient CO_(2) adsorbents is still a challenge.In this work,the NiO@USY(ultrastable Y)composites with different NiO loadings were prepared for the CO_(2) adsorption using Ni(NO_(3))_(2) as the precursor.The composites were characterized by X-ray photoelectron spectroscopy,X-ray diffraction,nitrogen adsorption–desorption test,scanning electron microscopy analysis,and thermogravimetric analysis,and were evaluated for the CO_(2) adsorption capacity,CO_(2)/N2 adsorption selectivity and CO_(2) cycle adsorption capacity.The characterization results show that after the activation at 423 K,the Ni(NO_(3))_(2) species were well dispersed into the surface of zeolite USY,and after the further activation at 823 K,Ni(NO_(3))_(2) could be converted into highly dispersed NiO.The adsorption results show that the presence of the active component NiO plays an important role in improving the CO_(2) adsorption performance,and the NiO@USY composite with a NiO loading of 1.5 mmol·g^(-1) USY support displays a high adsorption capacity and adsorption selectivity for CO_(2),and shows a good cycle stability.In addition,the Clausius–Clapeyron equation was used to evaluate the isosteric heat of adsorption of CO_(2) on the NiO(1.5)@USY composite,and the heat of adsorption was 17.39–38.34 kJ·mol^(-1).

关 键 词：NiO@USY composites Carbon dioxide Adsorption Separation Adsorption selectivity 

分 类 号：TQ424[化学工程] X701[环境科学与工程—环境工程]