The sticky residue left from purifying crude titanium tetrachloride (TiCl₄) using organic reagent has been harmful to production equipment. In this paper, it was successfully solved via using co-purifying reagent, which was prepared by doping copper powder in organic reagent. The impurity content and whiteness of TiCl₄ were the indexes which were used to determine the formula of co-purifying reagent compound, the amount of residue and the optimal purifying reaction conditions. Applying the purifying reagent (co-purifying reagent), the mechanism on synergistic purifying was explored via characterizing the residue, combined with theoretical calculation. The results suggested that the copper powder played a catalytic role in improving the coking rate and degree for organic reagent, and its I_D/I_G ratio increased from 0.99 to 1.01, which indicated that higher proportion of amorphous carbon and more defects were obtained. Finally, VOCl₃ was transformed into VOCl₂ and VCl₃ insoluble particles, contributing by the synergistic reduction of copper powder and amorphous carbon, and then they were removed via adsorbing on amorphous carbon.

使用有机试剂提纯粗制四氯化钛（TiCl ₄）留下的粘性残留物对生产设备有害。本文通过使用有机试剂中掺杂铜粉制备的共纯化试剂成功解决了该问题。_{TiCl 4}的杂质含量和白度是确定共纯化试剂化合物的配方、残渣量和最佳纯化反应条件的指标。应用纯化试剂（共纯化试剂），通过对残留物的表征，结合理论计算，探讨了协同纯化的机理。结果表明，铜粉对提高有机试剂的结焦率和结焦度起到了催化作用，其I _D /I _G比值从0.99增加到1.01，表明得到的无定形碳比例更高，缺陷更多。最后将VOCl ₃转化为VOCl ₂和VCl ₃不溶性颗粒，通过铜粉和无定形碳的协同还原作用，然后通过吸附在无定形碳上而被去除。