Fundamental Understanding of HDA Process: One-Step Conversion of Lignocellulosic Biomass to Furan-Based Precursors for Drop-in Liquid Fuel

HDA 工艺的基本理解：将木质纤维素生物质一步转化为用于滴入式液体燃料的呋喃基前体

• 批准号: 1236562
• 负责人: Xuejun Pan
• 金额: $ 33.69万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-10-01 至 2016-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1236562&HistoricalAwards=false
• 关键词: Fundamental; Understanding; HDA; Process; Step

PI: Pan, XuejunProposal Number: 1236562Institution: University of Wisconsin-MadisonTitle: Fundamental Understanding of HDA Process: One-Step Conversion of Lignocellulosic Biomass to Furan-Based Precursors for Drop-in Liquid FuelThis project is to fundamentally understand an innovative process (HDA: hydrolysis- dehydration-aldol condensation) for producing ?drop-in? biofuel from lignocellulosic biomass. The process directly converts cellulose and hemicellulose in the biomass to furan-based precursors for fuel-grade hydrocarbons in one step under mild conditions (120-140°C) without prior biomass pretreatment and fractionation. The precursors can be easily converted to fuel- grade hydrocarbons via hydrogenation/dehydration. Specifically, in the presence of acetone as solvent and reactant and halide salt (such as lithium bromide) and mineral acid as catalysts, the biomass undergoes hydrolysis of cellulose and hemicellulose to monosaccharides, dehydration of the monosaccharides to furfural and hydroxymethylfurfural (HMF), and aldol-condensation of HMF and furfural with acetone, and ends up with the formation of furan-based precursors with chain length of C6?C21. Meanwhile, lignin in the biomass is extracted with high purity, low molecular weight, and good reactivity, showing great potential in lignin co-products development. The unreacted acetone and catalysts can be recycled and reused.The specific objectives of this project are (1) to further optimize the HDA process to improve the conversion yield and selectivity of the furan-based oxygenate precursors and to establish process mass balance; (2) to elucidate the reaction pathways of cell-wall components (cellulose and hemicellulose) and to fundamentally understand the HDA process; (3) to characterize chemical, physical and thermal properties of the extracted HDA lignin.In addition to innovative research activities, this project also emphasizes on high-quality education, development and dissemination of new knowledge, and outreach activities. The success of proposed process would provide an alternative and innovative approach for producing drop-in liquid fuel from lignocellulosic biomass, such as agricultural crop residues (corn stover), energy crop (switchgrass), and forest biomass (wood). The integrated education plan will target broad range of students. In addition to regular undergraduate and graduate students, special attention will be paid to the students from high school and underrepresented groups by encouraging them participating summer projects on bioenergy.

主要研究者：潘学军提案编号：1236562机构：威斯康星大学麦迪逊分校题目：HDA工艺的基本理解：木质纤维素生物质一步转化为用于滴入式液体燃料的呋喃基前体本项目是从根本上理解一种创新工艺（HDA：水解-脱水-羟醛缩合），用于生产？顺便拜访来自木质纤维素生物质的生物燃料。该工艺在温和条件（120-140°C）下一步将生物质中的纤维素和半纤维素直接转化为燃料级烃的基于呋喃的前体，而无需预先对生物质进行预处理和分馏。前体可以通过氢化/脱水容易地转化为燃料级烃。具体而言，在丙酮作为溶剂和反应物以及卤化物盐（如溴化锂）和无机酸作为催化剂的存在下，生物质经历纤维素和半纤维素水解为单糖，单糖脱水为糠醛和羟甲基糠醛（HMF），以及HMF和糠醛与丙酮的醛醇缩合，并最终形成具有C6？C21同时，生物质中木质素的提取纯度高，分子量小， 和 好 反应性， 示出 伟大 潜在 在 木质素 共同产品开发。本项目的具体目标是：（1）进一步优化HDA工艺，以提高呋喃基丙酮前体的转化率和选择性，并建立工艺质量平衡;（2）阐明细胞壁组分的反应途径（纤维素和半纤维素），并从根本上了解HDA工艺;（3）表征提取的HDA木质素的化学、物理和热性质。除了创新的研究活动外，该项目还强调高质量的教育、新知识的开发和传播以及外联活动。拟议工艺的成功将为从农作物残体（玉米秸秆）、能源作物（柳枝稷）和森林生物质（木材）等木质纤维素生物质生产直接液体燃料提供一种替代和创新的方法。 综合教育计划将面向广泛的学生。除了普通的本科生和研究生外，还将特别关注高中生和代表性不足的群体，鼓励他们参加关于生物能源的暑期项目。