Study on Synthesis of Anti-oxidant Dtbhq Under Catalysis of Oxalic Acid

Synthesis of 2,5-di-tert-butylhydroquinone(DTBHQ) was studied from hydroquinone and tert-butylalcohol under catalysis of oxalic acid.The results showed the optimum conditions was the reaction temperature about 90 ℃,the reaction time 6 h,n(tert-butylalcohol):n(hydroquinone)=3:1,m(catalyst):m(hydroquinone)=0.6:1.The highest contend of 2,5-di-butylhydroquinone in the product was 25.2%.