中孔高性能粒状活性炭的研制

以果核壳为原料，采用磷酸活化法制备中孔高性能粒状活性炭，制备过程为：粗粒果核壳中加入质量分数为85%的磷酸加热和定时搅拌，使其润胀膨化，直至粘滞性消失，物料呈分散状态，然后炭化，活化、水洗、烘干。用正交试验法考察了润胀膨化，炭化和活人的温度及时间对制品性能的影响，并作了不同处理原料方式的比较试验，样品性能的测试结果：四氯化碳吸附率最高约160%，A法焦糖脱色力最大约130%。强度最高约94%，总也容积最大1.7mL/g，中孔比例约占40%-50%。

PREPARATION OF HIGN PERFORMANCE MESOPOROUS GRANULAR ACTIVATED CARBON

High performance mesoporous granular activated carbon was prepared from drupe stones by activation with phosphoric acid.85% H 3PO 4 was added to drupe stones,then heated and stirred on time to impregnate the material swelling until viscidity vanished and loose,then carbonized,activated,extracted with water and dried.Effects of temperature and time on impregnation-swelling,carbonization and activation on properties of the product were studied by orthogonal test.Also,comparative tests by different treatment methods on the raw materials were carried out.Property tests of the product show the results of maximum carbon tetrachloride adsorption 160%,decolorization of caramel A 130%,abrasion resistance 94%,total pore volume 1.7 mL/g,proportion of the mesopore 40%-50%.