碳吸附剂是高效液相吸附色谱常用的一种重要吸附剂,一般的碳吸附剂机械性能较差,因而使色谱柱的动力学性质在使用过程中逐渐变化,柱效降低。 J.Jansta等人用聚四氟乙烯在碱金属汞齐作用下还原制得的碳吸附剂成功地用于高效液相色谱上。他们将聚四氟乙烯在100℃真空条件下用锂汞齐还原,反应后的产物用水萃取除去锂盐,悬浮在水上的碳粉过滤后在350℃下真空干燥。取大于4微米小于12微米的颗粒作吸附剂用。用B.E.T.法测得其比表面为2500米~2/克。在25℃1克碳粉可吸附的苯高达 Carbonaceous adsorbents are commonly used as adsorbents in high performance liquid chromatography. The mechanical properties of carbonaceous adsorbents are generally poor. As a result, the kinetic properties of the columns are gradually changed during use, reducing the efficiency. J. Jansta et al. Have successfully used the carbon adsorbent prepared by reduction of polytetrafluoroethylene in the presence of alkali metal amalgam for high performance liquid chromatography. They reduced polytetrafluoroethylene with lithium amalgam at 100 ° C under vacuum, and the product after the reaction was extracted with water to remove the lithium salt. The carbon powder suspended in water was filtered and dried under vacuum at 350 ° C. Take particles larger than 4 microns and smaller than 12 microns for adsorbent. Measured by B.E.T. The specific surface of 2500 meters ~ 2 / g. 1 gram of carbon at 25 ° C adsorbs up to benzene