中文摘要：

制备了一种酸功能化离子液体1-（3-磺酸基）丙基-3-甲基咪唑磷酸二氢盐（（HSO3-pmim）H2PO4），并用FT—IR、3^H NMR、13^C NMR对其进行了表征。将其同氯乙酸构成的复合催化体系磺烷基咪唑磷酸盐-氯乙酸（（HSO3-pmim）H2PO4-ClCH2COOH）用于催化α-蒎烯水合反应，详细考察了水合反应的影响因素，得到了较佳的反应条件：n（α-蒎烯）：n（（HSO3-pmim）H2PO4）：n（氯乙酸）：n（水）6：1：6：30，反应温度80℃，反应时间8h。在该条件下α-蒎烯转化率为97％，松油醇选择性47．1％。并对催化体系的重复使用性进行了考察，该催化体系不经处理直接重复使用5次时，α-蒎烯转化率仍达83．7％，松油醇选择性51．6％。

英文摘要：

An acidic functional ionic liquid 1-（ 3-sulfonic group ）propyl-3-methylimidazole dihydro-phosphate （（ HSO3 -pmim ） H2PO4 ） was prepared and characterized by FT-IR, 1^H NMR and 13^C NMR. Hydration of α-pinene was studied over the composite catalytic system of sulfonie alkylimidazole phosphate-ehloroaeetie acid （ （ HSO3-pmim ） H2PO4-ClCH2COOH ）. The optimum conditions for hydration of α-pinene were obtained as follows ： n（α-pinene） ： n（ （ HSO3-pmim） H2PO4 ） ： n（ ehloroaetie acid ） ： n（water） 6：1 ： 6： 30,reaction temperature 80 ℃ , reaction time 8 h. Under the above conditions, the conversion of α-pinene was 97 % and the seleetivity of terpineol was 47.1%. The reusability of the composite eatalytie system was investigated. Under the optimum eonditions, when the composite eatalytie system was repeatedly used for 5 times, α-pinene eonversion reached 83.7 % and the seleetivity of terpineol was 51.6 %. It also ean be found that the simple experimental and product-isolation procedure eombinated with easy reeovery and reusability of the composite eatalytie system are expected to eontribute to the development of elean and environmentally friendly strategy for the synthesis of α-terpineol.