Research of Modified Y Zeolite and Its Behavior
Author: Date:2015/6/26 0:59:19
Research of Modified Y Zeolite and Its Behavior On Desulfurization for Naphtha
摘要 利用铵盐离子交换的方法对NaY分子筛进行改性制备了NH4Y分子筛,NH4Y分子筛经过与稀土金属的盐溶液进行二次离子交换、焙烧制得LaY分子筛。利用改性的Y分子筛进行动态吸附脱硫实验,并利用微库仑分析仪对脱硫实验处理过的石脑油样品进行硫含量测定。结果表明,在动态条件下,在采用浓度为1mol/L的铵盐溶液二次离子交换法制备的LaY分子筛对石脑油具有较好的脱硫效果。同时在吸附温度为45℃、剂油体积比为1:2的条件下,分子筛的吸附脱硫效果最佳。 |
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关键词: 改性 离子交换 焙烧 吸附 脱硫 |
Abstract: NaY zeolite was modified using the method of ammonium ion-exchange to prepare NH4Y zeolite. Then LaY zeolite was obtained by NH4Y zeolite a second ion-exchanging with rare earth salt solution and calcinations.Test of dynamic adsorptive desulfurization of naphtha was conducted using modified Y zeolite, the sulfur contents of the treated naphtha samples were analyzed by microcoulometry.The results show that under dynamic conditions, using 1mol/L ammonium salt solution secondary ion-exchange to prepare LaY zeolite has a good effect on desulfurization of naphtha.At the same time under the condition of adsorption temperature 45℃, volume ratio of adsorbent to oil 1:2, the adsorption desulfurization effect of zeolite is best. |
Keywords: modified, ion-exchanged, calcination, adsorption, desulfurization |
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