New Sorbents for Gas Separation by pi-Complexation

摘要本研究项目旨在开发两种用于烯烃-石蜡分离的新型吸附剂，并对饼式络合吸附机理有一个基本的了解。将Ag(I)和Cu(I)阳离子分散在不强吸附石蜡的底物上，合成了新型吸附剂。初步实验表明，该方法提高了烯烃的选择性、分离能力和分离速率。其他吸附剂将利用银(I)和铜(I)盐在不同底物上的单层分散来制备。稍后的吸附剂将用于乙炔分离。该研究将包括不同阴离子、阳离子和底物对吸附和分离行为的影响。基于分子轨道计算的理论研究将集中在碳氢化合物与吸附剂的相互作用上。新的吸附剂对烯烃-石蜡分离的有效性将通过压力（或真空）摆动吸附的模型模拟来评估。研究结果将对化学和石化工业的高效分离技术的发展产生影响。

CTS-9520328 Ralph T. Yang University of Michigan ABSTRACT The research project seeks to develop two new sorbents for olefin-paraffin separation and to obtain a basic understanding of the pie-complexation mechanism for adsorption. Novel sorbents have been synthesized by dispersion of Ag(I) and Cu(I) cations on substrates that do not adsorb paraffins strongly. Preliminary experiments show enhanced olefin selectivity, capacity and rate of separation. Other adsorbents will be prepared using monolayer dispersion of Ag(I) and Cu(I) salts on various substrates. The later sorbents will be examined for acetylene separation. The study will include the effects of different anions, cations and substrates on the adsorption and separation behavior. Theoretical studies based on molecular orbital calculations will focus on the hydrocarbon-sorbent interactions. The effectiveness of the new sorbents for olefin-paraffin separations will be assessed by model simulation for pressure (or vacuum) swing adsorption. The results will have an impact on the development of energy efficient separation techniques for the chemical and petrochemical industries.