One-pot direct conversion of raw straw to furan chemicals simultaneously in a choline chloride-lactic acid/methyl isobutyl ketone biphasic system

IF 4.1 4区工程技术 Q3 ENERGY & FUELS Biomass Conversion and Biorefinery Pub Date : 2024-04-23 DOI:10.1007/s13399-024-05649-4

Jiayi Yuan, Anwei Chen, Youzheng Chai, Ma Bai, Shiye Zhu, Liang Peng, Jiachao Zhang

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Abstract

The direct and simultaneous production of furan chemicals from raw straw in an efficient deep eutectic solvents/methyl isobutyl ketone (DES/MIBK) biphasic pretreatment system was performed in this study. The deep eutectic solvent was formed by choline chloride (ChCl) as hydrogen-bond acceptor (HBA) and lactic acid (LA) as hydrogen-bond donor (HBD). The effects of straw type and particle size, DES composition (ChCl/LA, molar ratio), reaction time, and temperature on the yield of furan chemicals were investigated. The maximum yield was 25.26%, 21.33%, and 39.21% for 5-hydroxymethylfurfural (HMF) and 5.26%, 9.89%, and 15.48% for 2, 5-furandicarboxaldehyde (DFF) coupled with 5.03%, 5.38% and 8.93% for 2, 5-furandicarboxylic acid (FDCA), respectively, when sweet potato, sorghum, and corn straw were used as the raw biomass. After conversion, the proportion of cellulose as well as its crystallinity index significantly increased. The corn straw was observed as an ideal feedstock with the highest yield of furan chemicals among the tested three raw straws under this conversion system. Results from this study show a simple and operability system without extra catalyst addition for lignocellulosic biomass conversion, which provides new information for direct furan production from raw straw.

Graphical Abstract

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在氯化胆碱-乳酸/甲基异丁基酮双相体系中同时进行生秸秆与呋喃化学品的单锅直接转化

采用高效的深度共晶溶剂/甲基异丁基酮（DES/MIBK）双相预处理系统，对原料秸秆进行了直接同步生产呋喃化学制品的研究。以氯化胆碱（ChCl）为氢键受体（HBA），乳酸（LA）为氢键供体（HBD）形成深共晶溶剂。考察了秸秆类型、粒径、DES组成（ChCl/LA、摩尔比）、反应时间、反应温度等因素对呋喃化合物收率的影响。以甘薯、高粱和玉米秸秆为原料时，5-羟甲基糠醛（HMF）的最高产量分别为25.26%、21.33%和39.21%,2,5-呋喃二甲酸（DFF）和2,5-呋喃二甲酸（FDCA）的最高产量分别为5.26%、9.89%和15.48%和5.03%、5.38%和8.93%。转化后纤维素的比例和结晶度指数均显著提高。在该转化体系下，玉米秸秆是三种原料秸秆中呋喃类化合物产量最高的理想原料。研究结果表明，在不需要额外添加催化剂的情况下，建立了一种简单、可操作的木质纤维素生物质转化体系，为原料秸秆直接生产呋喃提供了新的信息。图形抽象

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文献相关原料

公司名称

产品信息

麦克林

2,5-furandicarboxylic acid

麦克林

2,5-furandicarboxaldehyde

麦克林

5-hydroxymethyl furfural

麦克林

Methyl isobutyl ketone

来源期刊

Biomass Conversion and Biorefinery Energy-Renewable Energy, Sustainability and the Environment

CiteScore

7.00

自引率

15.00%

发文量

1358

期刊介绍： Biomass Conversion and Biorefinery presents articles and information on research, development and applications in thermo-chemical conversion; physico-chemical conversion and bio-chemical conversion, including all necessary steps for the provision and preparation of the biomass as well as all possible downstream processing steps for the environmentally sound and economically viable provision of energy and chemical products.