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配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。 修订后的物理吸附（RPA）模型是一种高度认可的预测工具，它的开发使人们对阴离子或阳离子贵金属配合物与表面质子化或去质子化羟基的相互作用有了新的认识。 “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。 由于 Pt 和 Pd 等活性贵金属催化剂对于加氢反应和燃料电池的重要性，吸附将成为重点。 碳吸附的控制主要通过掺入特定类型的含氧表面基团来实现；氧化铌、硫酸化氧化锆和混合金属氧化物也将受到检查。 工业合作者将提供关键材料合成能力和补充表征技术。 使用阿贡国家实验室的先进光子源是这项工作所固有的。 GOALI 合作提供的实物和实际支持相结合，为为期 3 年的研究项目提供了 500,000 美元。审稿人对这项提案的评价非常高，既基于其卓越的科学性，又基于其对关键催化加工技术的重要性。 先前的研究成果被认为对催化剂制备的理解做出了创新、突破性的贡献。 EXAFS 等表征技术现在已经可以确认理论理解的关键方面。 GOALI 项目的一部分是一支备受尊敬的工业团队，大学研究人员拥有与工业界互动的良好记录。这项工作的更广泛影响包括基础科学在重要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层面都很强大。 学生将通过一个成功的 NSF REU 新型材料网站参与其中，该网站吸引了大量来自代表性不足群体的学生。