CAS: Catalytic funneling and upgrading of biomass-derived phenols and polyols

CAS：生物质衍生酚和多元醇的催化漏斗和升级

• 批准号: 2154333
• 负责人: Mahdi Abu-Omar
• 金额: $ 25万
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-08-15 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2154333&HistoricalAwards=false
• 关键词: CAS; Catalytic; funneling; upgrading; biomass

With the support of the Chemical Catalysis Program in the Division of Chemistry, Professor Abu-Omar of the University of California, Santa Barbara is studying the development of catalysts for making renewable chemical feedstocks. Currently, the vast majority of chemical building blocks used to make polymers come from nonrenewable petroleum. Biomass is the most abundant renewable carbon source and offers a potential alternative to petroleum for producing feedstock chemicals. A current barrier to using biomass as a renewable source for industrially relevant monomers is that the deconstruction of biomass leads to mixtures of molecules, which require high energy input for separation and further transformation. Professor Abu-Omar and his research team are designing metal oxide catalysts and investigating their reaction chemistries on the molecular level with biomass-derived chemicals to better understand and improve the selectivity of these processes for selectively providing important monomers. Synergistically, a freshman-level undergraduate chemistry course is being developed called "Sustainability by the Numbers" and is focused on providing students from a broad range of disciplines with the analytical skills to evaluate the sustainability of choices made in daily life using a combination of chemistry and a systems level approach.New catalysts are needed to improve reactivity and control selectivity in the hydrodeoxygenation and dehydration of biomass-derived molecules. Professor Abu-Omar and his research group are addressing this problem by combining transition metal sites with controlled acidic sites on metal oxides to tailor product selectivity. Specifically, the deposition of well-defined platinum nanoparticles on tungsten oxide is being used to evaluate structure-function relationships that effect selectivity in these systems and sulfated zirconia-catalyzed conversion of sorbitol to isosorbide is being interrogated to better understand the mechanism of the process and further optimize reactivity. Experimental approaches common to both projects are the study of structure-function relationships through kinetic studies of reaction mechanisms, isotope labeling experiments, and establishing free energy relationships. These activities are also simultaneously providing graduate student training in multidisciplinary fields of chemistry spanning synthesis, catalysis, chemical kinetics, and green chemistry.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

在化学催化计划的支持下，加利福尼亚大学阿布 - 奥马尔教授，圣塔芭芭拉（Santa Barbara）正在研究开发可再生化学原料的催化剂。目前，用于使聚合物的绝大多数化学构建块来自不可再生石油。生物质是最丰富的可再生碳源，为产生原料化学物质提供了潜在的替代品。当前使用生物量作为工业相关单体的可再生能源的障碍是，生物量的解构会导致分子的混合物，这需要高能量输入以进行分离和进一步转化。阿布·奥马尔（Abu-Omar）教授和他的研究团队正在设计金属氧化物催化剂，并使用生物质衍生的化学物质在分子水平上研究其反应化学物质，以更好地理解和提高这些过程的选择性，以选择性地提供重要的单体。 Synergistically, a freshman-level undergraduate chemistry course is being developed called "Sustainability by the Numbers" and is focused on providing students from a broad range of disciplines with the analytical skills to evaluate the sustainability of choices made in daily life using a combination of chemistry and a systems level approach.New catalysts are needed to improve reactivity and control selectivity in the hydrodeoxygenation and dehydration of biomass-derived molecules. Abu-Omar教授及其研究小组正在通过将过渡金属位点与金属氧化物上的受控酸性位点相结合以量身定制产品的选择性来解决这个问题。具体而言，定义明确定义的铂纳米颗粒在氧化钨上的沉积被用来评估结构 - 功能关系，从而对这些系统的选择性产生选择性以及硫酸化的氧化锆诱导的索索比特转化为异氧化物，以更好地了解该过程的机制，并进一步优化反应性。两个项目共有的实验方法是通过对反应机制，同位素标记实验和建立自由能力关系的动力学研究来研究结构功能关系的研究。这些活动还同时提供了跨越合成，催化，化学动力学和绿色化学的化学领域的研究生培训。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子优点和更广泛的影响审查标准来通过评估来支持的。