RUI: Preparation and Characterization of New Heterogeneous Bimetallic Au-M Catalysts for Selective Oxidations and Hydrogenations

RUI：用于选择性氧化和加氢的新型多相双金属 Au-M 催化剂的制备和表征

• 批准号: 1300619
• 负责人: Bert Chandler
• 金额: $ 33万
• 依托单位: Trinity University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-01 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1300619&HistoricalAwards=false
• 关键词: RUI; Preparation; Characterization; New; Heterogeneous

The Chemical Catalysis Program in the Chemistry Division at the National Science Foundation supports Professor Bert D. Chandler from Trinity University to investigate the effects of adding heterometals to supported Au nanoparticle catalysts. New nanoparticle and catalyst synthesis techniques will be employed to prepare bimetallic nanoparticles on alumina and titania. Kinetics -based analytical techniques including (1) intentional poisoning studies to evaluate relative numbers of active sites, and (2) Hammett relationships to probe changes in NP surface charge will be developed and employed. These studies will enable a quantitative comparison of different catalysts, thus allowing for an assessment of heterometals effect on Au NPs, and answering fundamental questions regarding the nature of the catalytic active sites. Further, this program will provide numerous research opportunities for undergraduate students, giving them hands on experience in this nationally important area of research and training them to be the next generation of scientists. Improving our fundamental understanding of bimetallic nanoparticles and their catalytic properties has the potential to positively impact both the U. S. catalysis industry and the national economy by providing cheaper materials and consumer products as well as reducing pollution and industrial waste. This includes finding new ways to assemble a few hundred metal atoms, which can be a difficult chemical synthesis problem. This project will expand the methods developed by the PI to produce nanoparticles that have an inexpensive metal at the core (Cu, Ni, Fe) and Au on the outside. These new nanoparticles will be deposited onto a support and used to catalyze a variety of reactions.

美国国家科学基金会化学部的化学催化项目支持三一大学的 Bert D. Chandler 教授研究在负载型金纳米粒子催化剂中添加异金属的效果。 新的纳米颗粒和催化剂合成技术将用于制备氧化铝和二氧化钛上的双金属纳米颗粒。 将开发和采用基于动力学的分析技术，包括（1）评估活性位点相对数量的故意中毒研究，以及（2）探测纳米颗粒表面电荷变化的哈米特关系。这些研究将能够对不同催化剂进行定量比较，从而评估异金属对金纳米粒子的影响，并回答有关催化活性位点性质的基本问题。 此外，该计划将为本科生提供大量的研究机会，让他们在这个国家重要的研究领域获得实践经验，并培训他们成为下一代科学家。 提高我们对双金属纳米颗粒及其催化性能的基本了解，有可能通过提供更便宜的材料和消费品以及减少污染和工业废物，对美国催化行业和国民经济产生积极影响。 这包括寻找组装数百个金属原子的新方法，这可能是一个困难的化学合成问题。该项目将扩展 PI 开发的方法来生产纳米颗粒，其核心为廉价金属（铜、镍、铁），外部为金。 这些新的纳米颗粒将沉积在载体上并用于催化各种反应。