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Integrated Process for the Production of Lactic Acid from Lignocellulosic Biomass: From Biomass Fractionation and Characterization to Chemocatalytic Conversion with Lanthanum(III) Triflate
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-05-18 , DOI: 10.1021/acs.iecr.0c01666 Kwang Ho Kim 1, 2 , Chang Soo Kim 1 , Yunxuan Wang 3 , Chang Geun Yoo 3
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-05-18 , DOI: 10.1021/acs.iecr.0c01666 Kwang Ho Kim 1, 2 , Chang Soo Kim 1 , Yunxuan Wang 3 , Chang Geun Yoo 3
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The development of green processes for the production of renewable chemicals from biomass is required to respond to environmental issues. Herein, we report an integrated process for the production of lactic acid from lignocellulosic biomass. Lactic acid, one of the most important building block chemicals for producing biodegradable plastics, is of great interest in biorenewable communities. Selective fractionation of a hemicellulose-rich stream, almost 90% recovery, was conducted using a lab-scale flowthrough reactor. The recovered fraction was subjected to the catalytic conversion to produce lactic acid in the presence of lanthanum triflate (La(OTf)3). The yield of lactic acid was 78% at 250 °C based on the total sugar amount. In addition, the impregnation of La(OTf)3 into SiO2 was conducted to examine the possibilities of developing a heterogeneous catalyst system. Despite a slight decrease in the yield of lactic acid, the recyclability of the heterogeneous catalyst system with La(OTf)3 was demonstrated. The result provides a strategy to improve the total biomass utilization through effective hemicellulose fractionation, followed by catalytic conversion to lactic acid.
中文翻译：
从木质纤维素生物质生产乳酸的集成工艺：从生物质分馏和表征到三氟甲基磺酸镧（III）的化学催化转化
为了应对环境问题，需要开发用于从生物质生产可再生化学品的绿色工艺。在这里，我们报告了从木质纤维素生物质生产乳酸的综合过程。乳酸是生产可生物降解塑料的最重要的基础化学品之一，在可生物再生社区中引起了极大兴趣。使用实验室规模的流通式反应器对富半纤维素流进行选择性分馏，回收率几乎达到90％。在三氟甲磺酸镧（La（OTf）3）存在下，将回收的级分进行催化转化以产生乳酸。基于总糖量，在250℃下乳酸的产率为78％。此外，La（OTf）3浸渍到SiO中进行了图2，以研究开发非均相催化剂体系的可能性。尽管乳酸的收率略有下降，但仍证明了具有La（OTf）3的非均相催化剂体系的可回收性。该结果提供了通过有效的半纤维素分级分离，然后催化转化为乳酸来提高总生物质利用率的策略。
更新日期：2020-05-18
中文翻译：
从木质纤维素生物质生产乳酸的集成工艺：从生物质分馏和表征到三氟甲基磺酸镧（III）的化学催化转化
为了应对环境问题，需要开发用于从生物质生产可再生化学品的绿色工艺。在这里，我们报告了从木质纤维素生物质生产乳酸的综合过程。乳酸是生产可生物降解塑料的最重要的基础化学品之一，在可生物再生社区中引起了极大兴趣。使用实验室规模的流通式反应器对富半纤维素流进行选择性分馏，回收率几乎达到90％。在三氟甲磺酸镧（La（OTf）3）存在下，将回收的级分进行催化转化以产生乳酸。基于总糖量，在250℃下乳酸的产率为78％。此外，La（OTf）3浸渍到SiO中进行了图2，以研究开发非均相催化剂体系的可能性。尽管乳酸的收率略有下降，但仍证明了具有La（OTf）3的非均相催化剂体系的可回收性。该结果提供了通过有效的半纤维素分级分离，然后催化转化为乳酸来提高总生物质利用率的策略。
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