吕喜蕾^2,3,蒋雨希¹,宁术余^2,3,任傲天¹,秦雯琪¹,吕秀阳¹

• 1:浙江大学生物质化工教育部重点实验室， 浙江大学 化学工程与生物工程学院， 浙江 杭州 310058
• 2:浙江恒逸石化研究院有限公司， 浙江 杭州 311209
• 3:杭州澜顺科技有限公司， 浙江 杭州 311209

摘要(Abstract)：

聚乳酸是已经商业化的生物基高分子材料,但价格较高,因此廉价单体乳酸(LA)的开发至关重要。化学催化转化生物质糖制备乳酸甲酯(MLA)是一条有巨大潜力的路线。与大多数研究中采用的结晶果糖相比,蔗糖产量大、价格低,以蔗糖为原料可以大大降低MLA的生产成本。研究对In-TS-1催化蔗糖一步合成MLA的工艺进行了探索,对分子筛的Ti/Si摩尔比进行了优化,试验表明Ti/Si摩尔比为0.015时催化效果较佳。优化得到了较佳的工艺条件:在170℃下,用占底物质量分数50%的In-TS-1催化10 g·L^-1的蔗糖反应18 h,MLA的收率最高,为55.4%。此外,一定的含水量可以提高MLA的收率,当含水量是4%时,MLA+LA的收率可以达到61.7%。未来生产中,有希望直接以甘蔗汁为原料连续化生产MLA。研究工作为蔗糖生产MLA提供了重要的基础数据。

关键词(KeyWords)： 蔗糖;乳酸甲酯;In-TS-1;醇解

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(22078290,22278358)。

作者(Author): 吕喜蕾^2,3,蒋雨希¹,宁术余^2,3,任傲天¹,秦雯琪¹,吕秀阳¹

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