磁各向异性催化剂制备及其磁稳定床加氢催化研究

项目名称： 磁各向异性催化剂制备及其磁稳定床加氢催化研究

项目编号： No.21476262

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 有机化学

项目作者： 于濂清

作者单位： 中国石油大学（华东）

项目金额： 80万元

中文摘要： 磁性催化剂具有优异的催化和磁响应特性，越来越多的受到研究者关注，但目前这类催化剂普遍为磁各向同性催化剂。本项目采用具有形状各向异性的棒状γ-Fe2O3作为磁核，经表面改性、包覆后，通过自制的磁场油柱成型装置，利用纵向磁场控制载体的成型过程，建立磁各向异性载体与溶胶粘度、油柱成型温度、胶凝速度等参数的对应调控机制，进而获得磁各向异性催化剂载体，与磁各向同性载体相比剩余磁化强度可提高近一倍。将该高磁响应特性载体负载活性组分，在磁稳定床中进行苯加氢制环己烷催化，研究与该载体相匹配的磁床加氢参数（磁场强度、液体空速、氢苯比等）控制机制，解决固定床反应床层局部过热问题，提高催化剂寿命，同时高磁响应催化剂也可降低磁场能耗。该磁各向异性载体具有出色的磁响应特性和化学稳定性，易于磁分离、磁控制。该研究为制备高磁响应催化剂提供了新的方法，也为磁性催化剂的进一步发展奠定基础，具有较重要应用价值和学术意义

中文关键词： 磁性催化剂；苯加氢；磁各向异性

英文摘要： Magnetic catalyst holds important interest and potential application value in both environmental protection and green catalysis areas. However, there are problems of low magnetization and low working temperature for the magnetic isotropic catalyst. In this project we will synthesize well dispersed rod shape γ-Fe2O3 with shape anisotropic core by surface modification and surface coating, and analyze the orientation behavior by oil column method combination with magnetic field, then build the orientation mechanisms between magnetic anisotropy of carrier and the forming temperature, sol viscosity, gelling speed in order to improve magnetic and thermal properties. The final magnetic anisotropic carrier has excellent temperature magnetic properties, chemical stability and easy to magnetic separation, owning doubled residual magnetization and enhanced magnetic susceptibility. Moreover, hydrogenation of benzene to cyclohexane in magnetically stabilized bed will be studied to settle overheating of fixed reaction bed, and explore the matching laws between the magnetic anisotropic carrier and bed operating conditions (magnetic field, liquid space velocity, ratio of hydrogen to benzene). This work not only explores a new method for the preparation of the high response magnetic carrier, but also builds foundation for further development of magnetic catalyst. This study should be also valuable for vital application and academic significance.

英文关键词： Magnetic catalyst;hydrogenation of benzene;magnetic anisotropy