化工进展2017，Vol.36Issue(6)：2190-2196,7.DOI:10.16085/j.issn.1000-6613.2017.06.032
过渡金属改性Y型分子筛吸附脱除低碳烃中二甲基二硫醚
Study on adsorption removal of DMDS from light hydrocarbons using transition metal ions modified Y zeolite
摘要
Abstract
CoY,CuY and NiY zeolites were prepared by ion-exchange method. Influences of operation conditions and olefin content on adsorption desulfurization performances were investigated by dynamic adsorption experiments. Adsorption behaviors of dimethyl disulfide(DMDS)and isobutene onto CoY, CuY and NiY zeolites were calculated using density function theory. Saturated adsorbents were regenerated in superheated steam. Results show that adsorption desulfurization capacities of CoY,NiY and CuY are 47.5mg/g、36.3mg/g and 40.2mg/g,respectively,and CoY and NiY were more easily to be influenced by olefin competitive adsorption. The Mayer bond order of S—S is not much changed after adsorption while the double bond property was weakened. The adsorption energies of CoY,CuY and NiY are -59.5kJ/mol,-22.2kJ/mol and -30.4kJ/mol,respectively,which were consistent with the experimental results. Saturated adsorbents could be effectively regenerated in steam at 160℃ for 60min.关键词
脱硫/烯烃/竞争吸附/密度泛函理论Key words
desulfurization/olefin/competitive adsorption/density function theory(DFT)分类
能源科技引用本文复制引用
赵亚伟,沈本贤,孙辉,詹国雄,侯柯..过渡金属改性Y型分子筛吸附脱除低碳烃中二甲基二硫醚[J].化工进展,2017,36(6):2190-2196,7.基金项目
中央高校基本科研业务费专项资金(22A201514010)、上海市自然科学基金(16ZR1408100)、国家自然科学基金重大研究计划培育项目( 91634112 )及化学工程联合国家重点实验室开放课题(SKL-ChE-16C01)项目. （22A201514010）
