CAJ | 학술논문

采用固相离子交换法制备了AgY分子筛，通过静态吸附实验，研究了AgY分子筛对模拟燃料油中有机硫化物噻吩（T ）和苯并噻吩（BT ）的吸附平衡和吸附动力学特性，并用Freundlich、Langmuir、Toth吸附模型以及准 n阶和修正的准n阶动力学方程分别对吸附平衡数据和吸附动力学数据进行拟合，同时分析AgY分子筛吸附 T 和BT过程中的质量传递和颗粒内扩散。结果表明， Langmuir、Toth吸附模型和修正的准 n阶动力学方程能够很好地描述AgY分子筛对燃料油中T及BT的吸附行为，且AgY对BT的吸附能力强于对 T的吸附；T和BT从溶液中传递到吸附剂外表面是一个非常快速的过程，随着颗粒内部扩散的进行，扩散速率逐渐减慢直至平衡，颗粒内部扩散对BT的影响较大。
채용고상리자교환법제비료AgY분자사，통과정태흡부실험，연구료AgY분자사대모의연료유중유궤류화물새분（T ）화분병새분（BT ）적흡부평형화흡부동역학특성，병용Freundlich、Langmuir、Toth흡부모형이급준 n계화수정적준n계동역학방정분별대흡부평형수거화흡부동역학수거진행의합，동시분석AgY분자사흡부 T 화BT과정중적질량전체화과립내확산。결과표명， Langmuir、Toth흡부모형화수정적준 n계동역학방정능구흔호지묘술AgY분자사대연료유중T급BT적흡부행위，차AgY대BT적흡부능력강우대 T적흡부；T화BT종용액중전체도흡부제외표면시일개비상쾌속적과정，수착과립내부확산적진행，확산속솔축점감만직지평형，과립내부확산대BT적영향교대。
AgY zeolite was prepared via solid state ion exchanged method under the condition of N 2 at high temperature .Adsorptive desulfurization of model fuel was conducted in a batch reactor to evaluate the equilibrium and kinetics of the organic sulfur compounds thiophene ( T ) and benzothiophene (BT ) adsorption onto AgY zeolite .Adsorption equilibrium data were fitted with Freundlich , Langmuir and Toth adsorption models , and pseudo‐n‐order equation and modified pseudo‐n‐order equation was used to fit the kinetic of the adsorption process .The mass transfer analysis and intra‐particle diffusion analysis during the adsorption of T and BT on AgY were carried out .The results showed that the equilibrium adsorption data were fitted to Langmuire and Toth models and the BT interacted with zeolite more strongly than T .The corresponding parameters and correlation coefficients of each model were obtained ,which could be used to predict the T and BT adsorption on AgY zeolite .The transfer process of T and BT from fuel oil onto the adsorbent was rapid enough , and T and BT diffused quickly in the initial adsorption stage , and then intra‐particle diffusion slowed down and stabilized .The influence of intra‐particle diffusion on BT was stronger than that on T .