氯化镁／二氧化硅复合载体的制备及其比表面积的控制  

PREPARATION OF MAGNESIUM CHLORIDE/SILICON DIOXIDE SUPPORT WITH CONTROLLED SURFACE AREA

作　　者：张国虹[1] 张瑞 王路海 任合刚[1] 张宁宁[1] 闫卫东[1] 

机构地区：[1]河北工业大学高分子科学与工程研究所,天津300130 [2]中国石油股份公司石化研究总院,大庆化工研究中心,黑龙江大庆163714

出　　处：《精细石油化工》2008年第2期1-4,共4页Speciality Petrochemicals

摘　　要：研究了MgCl2／SiO2复合载体比表面积的调控。结果表明：MgCl2与SiO2载体的复合方式存在化学复合和物理复合（物理包覆）两种方式，通过调节MgCl2／SiO2复合载体中MgCl2与SiO2载体的比例，可以在30-260m^2／g范围内调控复合载体的比表面积；MgCl2／SiO2复合载体中既存在MgCl2与SiO2载体的物理共混，也存在MgCl2与SiO2载体表面发生的脱氯化氢反应。制备的复合载体呈球形颗粒形态，表面不均匀，可以提供更多不同的活性中心。The regulation of surface area and pore volume of MgCl2/SiO2 support was studied. Structures of the support were characterized by XRD, IR, SEM and BET measurement. The results showed that there were both chemical bonding and physical embedding between MgCl2 and SiO2. The surface area of the support could be tuned within the range of 30 - 260 m^2/g by adjusting the proportion of MgCl2 and SiO2. The surface of the complex support was not uniform, which could offer much more different active centers. SEM image demonstrated that the morphology of the complex support was spherical.

关 键 词：复合载体 氯化镁 二氧化硅 比表面控制 表征 

分 类 号：TQ426[化学工程]