改性分子筛吸附脱硫

Adsorptive Desulfurization by Modified Zeolites

徐林刚 李永红

XU Lin-gang LI Yong-hong

天津大学绿色合成与转化教育部重点实验室,天津300072

Key Laboratory for Green Chemical Technology of Ministry of Education, Tianjin University, Tianjin 300072,P.R.China

Abstract: A series of adsorbents involving modified ZSM-5,Y,MCM-41 molecular sieves were prepared by ion-exchanging method for gasoline desulfurization. The composition and specific surface area of the adsorbents were determined by XRD technique. The effect of adsorption conditions on the desulfurization performance of the adsorbents was studied. The results show that the desulfurization performance varies for different adsorbents, CuY performs the best and the optimum adsorption conditions is ambient temperature , atmospheric pressure and mass ratio of adsorbent to oil ratio of 0.15. By analyzing the varations of the adsorbent CuY through regeneration process, the mechanism of adsorptive desulfurization was investigated.