CuNaY分子筛上汽油馏分中含硫组分的选择吸附及其红外光谱研究  

IR Spectroscopic Study on Selective Adsorption of Sulfur-containing Compounds from Gasoline Distillation on Copper-exchanged Y Zeolite

作　　者：田福平[1] 吴维成[2] 蒋宗轩[2] 杨永兴[2] 蔡天锡[1] 李灿[2] 

机构地区：[1]大连理工大学精细化工国家重点实验室,大连116012 [2]中国科学院大连化学物理研究所催化基础国家重点实验室,大连116023

出　　处：《高等学校化学学报》2005年第12期2351-2353,共3页Chemical Journal of Chinese Universities

基　　金：国家"九七三"计划项目(批准号:G2000048003)资助

摘　　要：Desulfurization of gasoline distillation with adsorption was studied at ambient temperature and pressure by using CuNaY（NaY exchanged with copper nitrate aqueous solution） as the adsorbents.The gasoline distillation was composed of thiophene-cyclohexane solution（115.0 μg/mL） with or without toluene.For the solution without toluene,no detectable sulfur was found in the effluent when the effluent volume was less than 40 mL,while the addition of toluene resulted in an evident drop of the adsorption performance for（CuNaY.） FTIR spectra indicate that the conversion of Cu2+ to Cu+ took place during the pretreatment of（CuNaY） adsorbent,and the interaction mode between the adsorbed thiophene molecules and Cu+ is π complexation.This adsorption mode is easily affected by aromatic compounds,resulting in the significant decrease of adsorption capacity in model gasoline containing toluene on CuNaY.Desulfurization of gasoline distillation with adsorption was studied at ambient temperature and pressure by using CuNaY（ NaY exchanged with copper nitrate aqueous solution） as the adsorbents. The gasoline distillation was composed of thiophene-cyclohexane solution（ 115.0μg/mL） with or without toluene. For the solution without toluene, no detectable sulfur was found in the effluent when the effluent volume was less than 40 mL, while the addition of toluene resulted in an evident drop of the adsorption performance for CuNaY. adsorption mode is easily affected by aromatic compounds, resulting in the significant decrease of adsorption capacity in model gasoline containing toluene on CuNaY.

关 键 词：吸附 CuNaY分子筛 芳香化合物 噻吩 IR光谱 

分 类 号：O644[理学—物理化学]