摘要
采用离子交换法制得CeY分子筛,然后在不同条件下用NaY,Ce(Ⅲ)Y,Ce(Ⅳ)Y分子筛对催化裂化汽油进行吸附脱硫实验,利用微库仑综合分析仪对处理过的FCC汽油样品进行硫含量测定。静态吸附脱硫实验结果表明,在吸附时间为4h、室温(20℃)、剂油质量比为1∶2、转速为40r/min的条件下,分子筛的吸附脱硫效果最佳,其中Ce(Ⅳ)Y分子筛的吸附脱硫效果最好。动态吸附脱硫实验结果表明,当体积空速为5.0h-1时,Ce(Ⅳ)Y分子筛吸附容量较大,为0.46mg/g。
Ce modified zeolite Y samples were prepared by ion-exchange method. Tests of selective adsorptive desulfurization of FCC naphtha by NaY, Ce （Ⅲ） Y and Ce （Ⅳ） Y were conducted under various conditions, and the sulfur contents of the treated naphtha samples were analyzed by microcoulometry. Under the optimal static adsorptive desulfurization conditions of an adsorption time of 4 h,at ambient temperature（20℃） ,an adsorber to oil mass ratio of 0.5 and a stirring speed of 40 r/min, Ce（Ⅳ） Y exhibited the best desulfurization performance. Test results of kinetic adsorptive desulfurization showed with a liquid hourlYspace velocity of 5.0 h^-1 ,the adsorption capacity of Ce（Ⅳ）Y reached 0.46 mg/g.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2009年第4期14-17,共4页
Petroleum Processing and Petrochemicals
基金
中国国家自然基金资助项目(No.20476042
No.20776064)
关键词
分子筛
催化裂化
汽油
吸附脱硫
zeolite
catalytic cracking
gasoline
adsorptive desulfurization
