柠檬醛在La_2O_3/γ-Al_2O_3催化剂上的等温吸附  

Study on isothermal adsorption behaviours of citral on La_2O_3/γ-Al_2O_3 catalyst

作　　者：冉雷[1] 陈希慧[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004

出　　处：《工业催化》2013年第7期45-48,共4页Industrial Catalysis

基　　金：广西自然科学基金(桂科自0447002)资助项目

摘　　要：对柠檬醛-乙酸乙酯溶液中柠檬醛在La2O3/γ-Al2O3催化剂上等温吸附行为进行了研究。结果表明,30℃柠檬醛在La2O3/γ-Al2O3催化剂上的吸附动力学符合准二阶吸附动力学模型,吸附动力学方程为:1qt=2.350t+0.063 3(R2=0.998 5)。(30～65)℃柠檬醛在La2O3/γ-Al2O3催化剂上的等温吸附符合Langmuir方程,温度升高使柠檬醛的饱和吸附量增加,吸附热为32.19 kJ.mol-1。In citral-ethyl acetate solution, the isothermal adsorption kinetics and adsorption mode of citral were investigated on La2O3/γ-Al2O3 catalyst. The results indicated that the adsorption kinetics of citral on La2O3/γ-Al2O3 catalyst at 30 ℃ could be described well by the pseudo-second-order model. The adsorption kinetics equation was 1/q1=2.350/t＋0. 063 3 （R2 = 0. 998 5 ）. The isothermal adsorption at （ 30 - 65 ） ℃ fitted for the Langmuir model. The saturated adsorption capacity increased with the enhancement of adsorption temperature. The adsorption heat was 32.19 kJ · mol^-1

关 键 词：催化化学 柠檬醛 等温吸附 LA2O3 Γ-AL2O3催化剂 

分 类 号：O647.32[理学—物理化学] O643.32[理学—化学]