Abstract: Attapulgite clay decolorant was prepared for the decolorization of C₉ fraction. Effects of sulphuric acid，calcination temperature，active component，amount of decolorant and decoloring time on the decolorization of C₉ fraction were investigated. Results showed that the decolorant，which was prepared from attapulgite clay treated with 6% sulphuric acid calcinated at 600℃ with the addition of 4% MnO₂，has the best decolorization efficiency，and the decolorization rate of C₉ fraction can be achieved up to 78.66%.

摘要： 以甘肃临泽凹凸棒石黏土为载体，MnO₂为活性剂，制备脱色剂对碳九（C₉）馏分进行脱色。通过正交实验研究了酸度、焙烧温度、活性组分加入量、脱色剂的用量和脱色时间对C₉馏分脱色的影响。结果表明，焙烧温度600 ℃、活化浓度6%、活性组分MnO₂含量4%、脱色剂用量8 g、脱色时间在60 min时，能够使C₉馏分的脱色率达到78.66%。