For Caitun coal oxidation in KOH solution with 12% acetic acid, the yield of BPCA was 35. 2% (daf), it was about 60% more than that without acetic acid.

• 彩屯贫煤在KOH溶液中加12%25乙酸氧化；苯多羧酸产率为35.；2%25(daf)；相对提高60%25