EAGER: Aqueous Phase Catalytic Processing of Lignin to Hydrocarbons

EAGER：木质素水相催化转化为碳氢化合物

• 批准号: 1258504
• 负责人: Bin Yang
• 金额: $ 10.07万
• 依托单位: Washington State University
• 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: 2012-09-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1258504&HistoricalAwards=false
• 关键词: EAGER; Aqueous; Phase; Catalytic; Processing

Abstract#1258504YangLignin is a natural amorphous polymer that acts as the essential glue that gives plants their structural integrity. It is a main constituent of lignocellulosic biomass (15-30% by weight, 40% by energy), together with cellulose and hemicelluloses. The conversion of lignocellulosic biomass to biofuels is primarily focused on converting cellulose and hemicellulose in feedstocks into biofuels. These approaches assume that the lignin fraction will be used primarily for heat and power production. This current vision undervalues lignin's potential to address this nation's high quality liquid fuel requirements. Lignin conversion has significant potential as a source forthe sustainable production of fuels and bulk chemicals. Despite the potential, the conversion of lignin to biofuels has proven to be challenging.Professor Bin Yang of Washington State University believes the fundamental hurdles in lignin-to-hydrocarbon catalytic conversion process could be surmounted if creative manipulation towards lignin reactivity, catalyst selectivity and enhanced scale of transformation is employed. Many unknowns remain which lead to Yang's specific objectives for this EAGER proposal:(1) To improve understanding of lignin chemistry and reactivity (including chemical properties, solubility, molecular weight, and monolignol composition) in the depolymerization and hydrodeoxygenation reactions that lead to hydrocarbons; (2) To establish state-of-the-art NMR techniques (e.g. HR-MAS NMR) to probe structural features, modification and yields of lignin intermediates and products when processed under hydrogen and with supported metal and solid acid catalysts; (3) To understand the reaction chemistry and kinetics of lignin depolymerization and hydrodeoxygenation to hydrocarbons by screening a wide range of catalyst systems leading to high yield and oxygen removal.As an example of the needs for this information, to date, virtually no published data has been reported on conversion of the lignin fraction left after ethanol production from lignocellulosics. Co-production of ethanol, diesel and/or jet fuel utilizing all major components of biomass, including lignin and carbohydrates, would significantly improve the total carbon use in biomass, and enhance the overall operational efficiency, carbon conversion rate, economic viability, and sustainability of biofuels production. The educational component of the project is to continue development of outreach programs for university students and the general public, who will become cognizant of energy use and needs issues. The proposed activities will provide the foundation on which an integrated program that combines research, education and outreach focusing on biofuels and chemicals will be developed at Washington State University.

摘要#1258504阳木素是一种天然的无定形聚合物，是赋予植物结构完整性的基本粘合剂。它是木质纤维生物质的主要成分(重量占15%-30%，能量占40%)，还有纤维素和半纤维素。将木质纤维素生物质转化为生物燃料主要集中在将原料中的纤维素和半纤维素转化为生物燃料。这些方法假定木质素部分将主要用于制热和发电。这种目前的愿景低估了木质素在满足该国高质量液体燃料需求方面的潜力。木质素转化作为燃料和散装化学品可持续生产的来源具有巨大的潜力。华盛顿州立大学的杨斌教授认为，如果对木质素的反应性、催化剂选择性和转化规模进行创造性的控制，木质素催化转化过程中的基本障碍是可以克服的。仍有许多未知因素导致杨提出了这项迫切的建议的具体目标：(1)提高对木质素化学和导致碳氢化合物的解聚和加氢脱氧反应中的反应性(包括化学性质、溶解度、相对分子质量和单醇组成)的了解；(2)建立最先进的核磁共振技术(如HR-MAS核磁共振)，以探索在氢气和负载型金属和固体酸催化剂下处理木质素中间体和产品时的结构特征、修饰和产率；(3)通过筛选一系列催化体系来了解木质素解聚和加氢脱氧制碳氢化合物的反应化学和动力学。例如，作为对这些信息的需要的例子，到目前为止，几乎没有关于木质纤维素制取乙醇后木质素组分转化的公开数据报道。利用生物质的所有主要成分，包括木质素和碳水化合物，联合生产乙醇、柴油和/或喷气燃料，将显著改善生物质的总碳利用，并提高生物燃料生产的整体运营效率、碳转化率、经济可行性和可持续性。该项目的教育部分是继续为大学生和公众制定外联方案，他们将认识到能源使用和需求问题。拟议的活动将为华盛顿州立大学开发一个综合项目奠定基础，该项目将结合研究、教育和推广，重点放在生物燃料和化学品上。