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CN105669397B 一种木质素氧化降解制备丁香酚的方法 失效 - 权利终止

一种木质素氧化降解制备丁香酚的方法
摘要：
一种木质素氧化降解制备丁香酚的方法，即一种以化合物1‑氢‑4‑甲基三氮唑磷酸二甲酯盐为溶剂溶解木质素，在均相体系下氧化降解木质素制备丁香酚的方法，在木质素与水和溶剂1‑氢‑4‑甲基三氮唑磷酸二甲酯盐质量比为1:5:10‑100、催化剂硫酸铜与木质素质量比为1:100‑1000、氧化剂氧气压力1.0‑6.0MPa、反应温140‑200℃、反应时间0.5‑4.0h的条件下氧化降解木质素制备丁香酚，并回收重复利用溶剂1‑氢‑4‑甲基三氮唑磷酸二甲酯盐。与现有技术相比：1.在均相体系下氧化降解木质素，反应速度快、产物收率高。2.溶剂1‑氢‑4‑甲基三氮唑磷酸二甲酯盐对木质素具有良好的溶解性能，且自身具有良好的热稳定性和可重复使用性。
摘要（英）：

A method for preparing eugenol by oxidative degradation of lignin is a method for preparing eugenol by the oxidative degradation of lignin in a homogeneous system by using 1-hydro-4- dimethyl methyl triazole phosphate as a solvent to dissolve the lignin; the weight ratio of the lignin, water and the solvent 1-hydro-4- dimethyl methyl triazole phosphate is 1:5:10-100, the weight ratio of a copper sulfate catalyst to the lignin is 1:100-1000, an oxidizing agent oxygen has a pressure of 1.0-6.0 MPa, reaction temperature is 140-200 DEG C, reaction time is 0.5-4.0 h, and the lignin is oxidatively degraded under the above conditions to prepare eugenol, and the solvent 1-hydro-4- dimethyl methyl triazole phosphate is recycled for use. Compared with the prior art, the lignin is oxidatively degraded in the homogeneous system, reaction speed is high and product yield is high; the solvent 1-hydro-4- dimethyl methyl triazole phosphate has high dissolubility and itself has good thermal stability and reusability.

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