In-TS-1催化蔗糖一步法醇解制备乳酸甲酯工艺研究

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关键词：蔗糖；乳酸甲酯； -TS-1;醇解

中图分类号：TQ032 文献标志码：A DOI：10.3969/j.issn.1003-9015.2025.00.001

Abstract：Polylacticacid （PLA）is acommerciallavailable bio-based polymer，but the priceis high.So，the development of inexpensive monomers，lactic acid（LA）is crucial.The chemical catalytic conversion of sugars into methyl lactate（MLA） isa route with great potential. Compared to crystaline fructose，which is used asraw material inmost studies，sucrose is moreabundantand cheaper，andusing sucroseasaraw materialcan significantly reduce the production cost of MLA.This work studied theone-pot synthesizing of MLA from sucrose catalyzed with In-TS-1.The Ti/Si molarratio was optimized，anda Ti/Si molar ratioof O.O15 was found to beoptimal.Theoptimal reaction condition was determined： 10g⋅L-1 sucrose was catalyzed by In-TS-1，whose weight was 5O% of sucrose at 170‰ for18 hours，and the yield ofMLA was 55.4% .It is found that a certain amount of water can improve the yield of MLA，and when the water content is 4% ，the combined yield of MLA and LA can reach 61.7% . In future production，it's promising to use sugarcane juice as a raw material for continuous production of MLA.The research provides important basic data for the production of MLA from sucrose.

Key words：sucrose； methyl lactate；In-TS-1； alcoholysis

1前言

化石资源炼制的产品极大地丰富了人类的生活，在带来便利的同时也导致了“温室效应”等环境问题，这将引发全球气候和生态变化，绿色低碳转型已成为必然趋势。（剩余10978字）