煤系高岭土在焙烧温度620℃、活化时间2h的条件下制备偏高岭土,其内部的吸附水和大部分结构羟基脱出基本完成,质量损失达14.2%,热处理使铝氧八面体破坏,结晶度降低,结构无序化。在反应温度80℃、反应时间7h、酸用量25mL/g和酸浓度2mol/L条件下制得酸改性高岭土材料,比表面积达313.58m2/g。对H2S的吸附结果表明,吸附容量达50.2mg/g,比天然沸石大28.5mg/g。再经5.3%的K2MnO4浸渍改性的高岭土的吸附容量达82.3mg/g。 The calcined kaolin was calcined at 620 ℃ for 2h. The adsorbed water and most of the structural hydroxyls in the metakaolin were basically removed, with a mass loss of 14.2%. The heat treatment led to the destruction of the octahedron and the decrease of crystallinity , The structure of disorder. Acid modified kaolin was obtained under the conditions of reaction temperature of 80 ℃, reaction time of 7h, acid amount of 25mL / g and acid concentration of 2mol / L. The specific surface area reached 313.58m2 / g. Adsorption of H2S showed that the adsorption capacity of 50.2mg / g, 28.5mg / g larger than the natural zeolite. After that, the adsorption capacity of kaolin modified by K2MnO4 impregnated with 5.3% was 82.3mg / g.