GOALI: The Engineering of Noble Metal Catalyst Impregnation

目标：贵金属催化剂浸渍工程

• 批准号: 0243210
• 负责人: John Regalbuto
• 金额: $ 30.61万
• 依托单位: University of Illinois at Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-07-01 至 2006-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0243210&HistoricalAwards=false
• 关键词: GOALI; Engineering; Noble; Metal; Catalyst

This GOALI research program will investigate the fundamental chemical phenomena associated with the adsorption of noble metal coordination complexes from solution onto widely used oxide and carbon supports. A highly recognized predictive tool, the Revised Physical Adsorption (RPA) model, has been developed which has led to a new understanding of the interaction of anionic or cationic noble metal complexes and the protonated or deprotonated hydroxyl groups at surfaces. The "point of zero charge" and the solution pH determine the nature of the ionic interaction. Proton transfer between the bulk solution and the surface has been identified as a key mechanistic step. The main focus on this ongoing research will be on the development of new scientific insight that can be used to engineer the properties of several important industrial catalyst supports including carbon. The adsorption of active noble metals such as Pt and Pd will the primary emphasis because of the importance of these catalysts for hydrogenation reactions and for fuel cells. Control of adsorption on carbon will be exercised primarily through the incorporation of specific types of O-containing surface groups; niobia, sulfated zirconia, and mixed metal oxides will also be examined. Industrial collaborators will provide key material synthesis capabilities and complementary characterization techniques. Access to the Advanced Photon Source at Argonne National Laboratories is inherent to the work. Combined in-kind and actual support from the GOALI collaborations is $500,000 for the 3-year research project.Reviewers rated this proposal very strongly, both on the basis of its scientific excellence and its importance to key catalytic processing technology. The prior research accomplishments have been recognized as making an innovative, ground-breaking contribution to the understanding of catalyst preparation. Characterization techniques such as EXAFS have now allowed key aspect of the theoretical understanding to be confirmed. A highly respected industrial team is part of this GOALI project, and the university investigator has a demonstrated record of interaction with industry.The broader impacts of the work include the practical applications of the fundamental science to important national research priorities, such as the development of improved carbon-based electrodes used in PEM fuel cells. Other aspects of the work will have applications in improved environmental approaches to catalyst preparation, especially for heavy metals. Educational aspects of the research project are strong at both the graduate and undergraduate level. Students will be involved through a successful NSF REU site on Novel Materials that has involved significant numbers of students from underrepresented groups.

该GOALI研究计划将研究与贵金属配位络合物从溶液中吸附到广泛使用的氧化物和碳载体上相关的基本化学现象。 一个高度认可的预测工具，修订的物理吸附（RPA）模型，已被开发，这导致了一个新的理解的相互作用的阴离子或阳离子的贵金属络合物和质子化或去质子化的羟基在表面。 “零电荷点”和溶液pH值决定了离子相互作用的性质。本体溶液和表面之间的质子转移已被确定为一个关键的机械步骤。 这项正在进行的研究的主要重点将是开发新的科学见解，可用于设计包括碳在内的几种重要工业催化剂载体的性能。 活性贵金属如Pt和Pd的吸附将是主要的重点，因为这些催化剂对加氢反应和燃料电池的重要性。 控制吸附在碳将行使主要通过纳入特定类型的含O表面基团;氧化铌，硫酸化氧化锆，和混合金属氧化物也将进行检查。 工业合作者将提供关键的材料合成能力和互补的表征技术。 进入先进的光子源在阿贡国家实验室是固有的工作。 GOALI合作的实物和实际支持为3年研究项目提供了50万美元。评审人员对该提案的评价非常强烈，这既基于其科学卓越性，也基于其对关键催化加工技术的重要性。 先前的研究成果已被公认为对催化剂制备的理解做出了创新，突破性的贡献。 表征技术，如EXAFS，现在已经允许的理论认识的关键方面得到确认。 GOALI项目中有一个备受尊敬的工业团队，该大学的研究人员与工业界有着良好的互动记录，其工作的更广泛影响包括基础科学在重要的国家研究重点中的实际应用，例如开发用于PEM燃料电池的改进碳基电极。 这项工作的其他方面将应用于改进催化剂制备的环境方法，特别是重金属。 该研究项目的教育方面在研究生和本科生两个层次都很强。 学生将通过一个成功的NSF REU网站参与新材料，该网站涉及来自代表性不足群体的大量学生。