【摘要】 将3种磷酸与离子液体组成的复合体系用于催化合成乙酸松油酯的反应,其中,H3PO4/[C4m im]BF4和H3PO4/[C8m im]BF4均显示出很高的催化活性;以H3PO4/[C4m im]BF4为代表,详细考察了反应的影响因素;得出最佳工艺条件:n(松油醇)∶n(乙酸酐)为1∶1.5,松油醇0.03 mol,磷酸0.03 g,反应温度40℃,反应时间10 h,离子液体[C4m im]BF45 g,此条件下所得粗产物中未反应松油醇质量分数仅为0.9%,松油醇的质量分数86.5%,松油烯11.0%。H3PO4/[C4m im]BF4复合体系重复使用7次后,适当补加H3PO4可使催化活性与新催化体系相当。更多还原

【Abstract】 Three kinds of H₃PO₄/BF₄ composite were first used to catalyze the synthesis of terpinyl acetate.H₃PO₄/[C₄mim]BF₄ and H₃PO₄/[C₈mim]BF₄ have high catalytic activities.Taking H₃PO₄/[C₄mim]BF₄ as the representative,the effects of dosage of H₃PO₄ catalyst,reaction temperature,molar ratio and reaction time on selectivity of terpinyl acetate were studied.Under the above conditions,mass fraction of unreacted terpineol was only（0.9%）,while terpinyl acetate was（86.5%） and pinene was（11%） in the product.After H₃PO₄ /[C₄ mim]BF₄ was repeatedly used for seven times,the catalytic activity was comparative to the new catalytic system when some H₃PO₄ was supplemented.更多还原