• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Removal of sulphur from model gasoline by CuAgY zeolite: equilibrium, thermodynamics and kinetics
【24h】

Removal of sulphur from model gasoline by CuAgY zeolite: equilibrium, thermodynamics and kinetics

机译：CuAgY沸石去除模型汽油中的硫：平衡，热力学和动力学

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this study, the removal of thiophene from cyclohexane using ion-exchanged Y zeolites was investigated in a batch system by performing static tests. The effects of initial sulphur concentration, contact time and adsorption temperature on the removal efficiency were studied. Changes to the adsorbents before and after the adsorption were characterized by ICP-AES, XRD, N2 physisorption, SEM, and TEM. The highest sulphur adsorption capacity of 60.98 mgS g?1 for CuAgY was achieved at 323 K. The equilibrium data were well fitted by the Sips model and the kinetics of the adsorption process could be described by the pseudo-second-order model. Thermodynamic parameters were obtained from the models and indicated that the adsorption was spontaneous and exothermic. Modeling results also showed that the Marquardt's Percent Standard Deviation (MPSD) and the Sum of the Squares of the Errors (SSE) provided the best fitting results for isotherm and kinetic models, respectively. In addition, it was found that CuAgY could maintain 84.5% of the capacity for sulphur after twice regeneration.
机译：在这项研究中，通过进行静态测试，在间歇系统中研究了使用离子交换Y沸石从环己烷中除去噻吩的方法。研究了初始硫浓度，接触时间和吸附温度对脱硫效率的影响。通过ICP-AES，XRD，N 2 物理吸附，SEM和TEM表征了吸附前后吸附剂的变化。 Cu323Y在323 K时的最高硫吸附量为60.98 mgS g ？1 。Sips模型和吸附过程动力学很好地拟合了平衡数据。可以用伪二阶模型来描述。从模型获得热力学参数，表明吸附是自发的并且放热的。建模结果还显示，Marquardt的标准偏差百分比（MPSD）和误差平方和（SSE）分别为等温线模型和动力学模型提供了最佳拟合结果。另外，发现CuAgY在两次再生后可以保持84.5％的硫容量。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号