蒽醌法生产H2O2工作液的改进

为了改进蒽醌法生产H2O2的由重芳烃(AR)和磷酸三辛酯(TOP)组成的工作液的氢效，考察了2-乙基蒽醌(2-EAQ)在添加邻甲基环己基醋酸酯(2-MCHA)或二异丁基甲醇(DIBC)的三组分工作液(AR+TOP+2-MCHA和AR+TOP+DIBC)中的溶解度，并分析了三组分工作液的密度、黏度、界面张力和H2O2的分配系数，从中选取了体积比为75:20:5的AR+TOP+2-MCHA和体积比为75:5:20的AR+TOP+DIBC 2种性能优异的工作液，采用微反装置评价了其氢效。结果表明，与两组分工作液相比，2-EAQ在三组分工作液中的溶解度得到了显著提高；与两组分工作液的氢效5.65 g/L相比，三组分工作液的氢效得到显著提高，分别达到12.53和11.31 g/L。

Improvement of Working Solution for H2O2 Production by Anthraquinone Method

In order to improve the hydrogen efficiency of working solution containing two components of heavy aromatics(AR) and trioctyl phosphate(TOP) for H2O2 production by anthraquinone method, the solubilities of 2-ethylanthraquinone(2-EAQ) in working solutions of AR+TOP added acetic acid (2-methylcyclohexyl) ester(2-MCHA) or 2,6-dimethyl-4-heptanol(DIBC) were measured. The density, viscosity, surface tension of AR+TOP+2-MCHA and AR+TOP+DIBC solutions, and the distribution coefficient of H2O2 in these solutions were analyzed. The AR+TOP+2-MCHA and AR+TOP+DIBC solutions with the volume ratios of 75:20:5 and 75:5:20, respectively, were chosen as the working solutions, which possessed good properties for production of H2O2. Then their hydrogen efficiencies were evaluated in a microreactor. The results showed that compared with the AR+TOP working solution, whose hydrogen efficiency was 5.65 g/L, the hydrogen efficiencies of the two new working solutions were significantly improved, reaching 12.53 and 11.31 g/L, respectively.