硼钛基复合催化剂在合成龙脑生产中的应用

将自制的硼钛基复合催化剂用于合成龙脑的生产。试验结果表明,投料时将无水草酸与复合催化剂一次性加入,反应在常压下进行,工艺技术难度低,操作简便; 与传统生产工艺相比,反应条件比较温和,生产能力明显放大,在酯化反应时采用较大容积(2000 L)的反应釜,其容积为硼矸催化酯化反应釜的近7倍;酯化反应时原料中α-蒎烯转化率高,由传统工艺的55%～57%左右提高到62%;松节油单耗由传统工艺中的3.7～3.8 t/t降低到新工艺的平均值为2.72 t/t,降低了近25%,高价值、低沸点副产物白轻油的总得率高。

Application of B/Ti-based Composite Catalyst in Synthetic Borneol Production

The self-made B/Ti composite catalyst was prepared for production of synthetic borneol. The results showed that the anhydrous oxalic acid and composite catalyst were added at the same time. The reaction was carried out at normal pressure and technology difficulty was low. The operation was simple and easy, and the reaction condition was mild. The reactor of esterification can be used in bigger volume (2000L), which is seven times in volume to the reactor for boron oxide catalytic esterification. Conversion of α-pinene in esterification increased from 55%-57% to 62%. The consumption of turpentine reduced from 3.7-3.8 t/t to 2.72 t/t compared with the present technology. The total yield of white oil which had high value and low boiling point was high.