【摘要】 介绍了固体超强酸S₂O₈^2-/ZrO₂-NiO催化剂制备方法,并将其用于催化α-蒎烯合成龙脑的酯化-皂化工艺。考察了催化剂焙烧温度、焙烧时间、催化剂用量及原料α-蒎烯与无水草酸摩尔比对龙脑产品收率和组成的影响。结果表明,当催化剂焙烧温度为600℃,焙烧时间为3 h,催化剂用量为α-蒎烯质量的6%,原料α-蒎烯与无水草酸的摩尔比为1:0.2时,龙脑产品收率可达55.81%。产品中正龙脑含量可达77.01%,正、异龙脑的含量比高达4.44:1。更多还原

【Abstract】 Preparation of solid superacid S₂O₈^2-/ZrO₂-NiO as catalyst was introduced,and the catalyst was used in catalytic synthesis of borneol fromα-pinene.The effects of reaction conditions including calcining heat,calcining time,dosage of catalyst and molar ratio ofα-pinene to anhydrous oxalic acid on the product yield and compositions were examined.The result showed that the yield of borneol could be up to 55.81% when the catalyst calcining temperature was 600℃,calcining time 3 hours,the dosage of the catalyst 6% （based on the mass ofα-pinene）,the molar ratio ofα-pinene to anhydrous oxalic acid 1:0.2.The content of normal borneol in the product could be 77.01%.The mass ratio of normal borneol to isoborneol in product was 4.44:1.更多还原