CAS: Functional Nanoglues for Robust and Efficient Single-Atom Catalysis
CAS:用于稳健、高效单原子催化的功能纳米胶
基本信息
- 批准号:1955474
- 负责人:
- 金额:$ 49万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2020
- 资助国家:美国
- 起止时间:2020-06-01 至 2025-05-31
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
New catalytic conversion processes may significantly impact global energy security and lead to a cleaner environment. Many chemical manufacturing and emission control processes use precious metals as catalysts to speed up the chemical reactions. The use of precious metals in industrial catalysts is not sustainable because of the low abundance and high cost of these metals. The use of supported single metal atoms for catalytic transformation may address these problems. The critical challenge for broad applications of single-atom catalysts is their stability during use. In this project, Dr. Jingyue (Jimmy) Liu of Arizona State University is developing "nanoglues" to both stabilize the supported single metal atoms and enhance their catalytic performance. This project is addressing fundamental understanding of catalysis by supported metal atoms and is providing design tools for developing single atom catalysts with practical applications important to the environment and the economy. Professor Liu impacts education through the ASU Winter School on High Resolution Electron Microscopy, attended primarily by graduate students. In addition, the SCience and ENgineering Experience (SCENE) program is providing cutting-edge science research experiences to high school students in grades 10-12. With funding from the Chemical Catalysis Program of the Division of Chemistry, Dr. Jingyue (Jimmy) Liu of Arizona State University is developing a fundamental understanding of how to localize, and simultaneously enhance the catalytic properties of, single metal atoms (e.g., Pt, Pd, Rh, Ru, Ir or Au) by confining them to isolated, ultra-small functional oxide nanoclusters (e.g., CeOx, TiOx, and CoOx). These nanoglues are uniformly grafted onto a high-surface-area robust support (e.g., silica or alumina). With such a catalyst design, it is expected that single metal atoms or small metal clusters do not sinter during the catalyst activation process (e.g., by H2 at 250 C - 500 C) and/or during catalytic reactions at elevated temperatures under reducing environment. The use of supported, isolated metal atoms as catalytically-active centers not only maximizes the metal usage efficiency but also makes it possible to have uniform distribution of active sites. These factors are important for tuning the selectivity of a targeted catalytic reaction. The catalyst design allows metal atoms to move within their corresponding isolated nanoglue islands but not across the nanoglues to form larger particles. The nanoglue not only acts as a “double-sided tape” to strongly hold both the metal atoms and the high-surface-area support but also provides the desired function for the targeted catalytic activity and/or selectivity. The sizes of the nanoglue islands range 0.5-2.0 nm to accommodate high levels of metal loading. The nanoglue-based single-atom catalysts are being tested for CO oxidation, preferential oxidation of CO, water-gas shift, reforming, and hydrogenation/dehydrogenation reactions. Broader impacts include incorporating research results in an annual Winter Workshop of High Resolution Electron Microscopy (attended primarily by graduate students from across the US), training of graduate and undergraduate research students, and mentoring of high school students through the SCience and ENgineering Experience (SCENE) program dedicated to providing cutting-edge science research experiences to high school students in grades 10-12.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.
新的催化转化工艺可能会对全球能源安全产生重大影响,并带来更清洁的环境。许多化学制造和排放控制过程使用贵金属作为催化剂来加速化学反应。 在工业催化剂中使用贵金属是不可持续的,因为这些金属的丰度低且成本高。使用负载的单金属原子进行催化转化可以解决这些问题。单原子催化剂广泛应用的关键挑战是其在使用过程中的稳定性。在这个项目中,亚利桑那州州立大学的Jingyue(Jimmy)Liu博士正在开发“纳米胶”,以稳定负载的单个金属原子并增强其催化性能。该项目旨在解决对负载金属原子催化作用的基本理解,并为开发对环境和经济具有重要实际应用的单原子催化剂提供设计工具。刘教授通过ASU冬季学校影响教育高分辨率电子显微镜,主要由研究生参加。此外,科学和工程经验(SCENE)计划正在为10-12年级的高中生提供尖端的科学研究经验。在化学系化学催化项目的资助下,亚利桑那州立大学的Jingyue(Jimmy)Liu博士正在对如何定位并同时增强单个金属原子的催化性能(例如,Pt、Pd、Rh、Ru、Ir或Au),通过将它们限制在隔离的、超小的功能氧化物纳米团簇(例如,CeOx、TiOx和CoOx)。 将这些纳米胶均匀地接枝到高表面积的坚固支持物(例如,二氧化硅或氧化铝)。采用这种催化剂设计,预期单个金属原子或小金属簇在催化剂活化过程中不会烧结(例如,在250 ℃-500 ℃下通过H2)和/或在还原环境下在高温下的催化反应期间。使用负载的、孤立的金属原子作为催化活性中心不仅使金属使用效率最大化,而且使活性位点的均匀分布成为可能。 这些因素对于调节目标催化反应的选择性是重要的。催化剂设计允许金属原子在其相应的隔离的纳米胶岛内移动,但不穿过纳米胶以形成更大的颗粒。纳米胶水不仅充当“双面胶带”以牢固地保持金属原子和高表面积载体两者,而且还为目标催化活性和/或选择性提供所需功能。纳米胶水岛的尺寸范围为0.5-2.0 nm,以适应高水平的金属负载。基于纳米颗粒的单原子催化剂正在测试用于CO氧化、CO的优先氧化、水煤气变换、重整和氢化/脱氢反应。更广泛的影响包括将研究结果纳入年度高分辨率电子显微镜冬季研讨会(主要由来自美国各地的研究生参加),培训研究生和本科研究生,通过科学和工程经验(SCENE)计划为高中生提供指导,致力于为10年级的高中生提供尖端的科学研究经验,该奖项反映了NSF的法定使命,并通过使用基金会的知识价值和更广泛的影响审查标准进行评估,被认为值得支持。
项目成果
期刊论文数量(6)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Functional CeOx nanoglues for efficient and robust atomically dispersed catalysts
- DOI:10.21203/rs.3.rs-604924/v1
- 发表时间:2021-06
- 期刊:
- 影响因子:0
- 作者:J. Liu;Xu Li;X. Hernandez;C. Fang;Yizhen Chen;Jie Zeng;Yong Wang;B. Gates
- 通讯作者:J. Liu;Xu Li;X. Hernandez;C. Fang;Yizhen Chen;Jie Zeng;Yong Wang;B. Gates
Functional CeOx nanoglues for robust atomically dispersed catalysts
- DOI:10.1038/s41586-022-05251-6
- 发表时间:2022-10-26
- 期刊:
- 影响因子:64.8
- 作者:Li, Xu;Pereira-Hernandez, Xavier Isidro;Liu, Jingyue
- 通讯作者:Liu, Jingyue
Advances and Applications of Atomic-Resolution Scanning Transmission Electron Microscopy
- DOI:10.1017/s1431927621012125
- 发表时间:2021-08
- 期刊:
- 影响因子:2.8
- 作者:J. Liu
- 通讯作者:J. Liu
Enabling circular economy by N-recovery: Electrocatalytic reduction of nitrate with cobalt hydroxide nanocomposites on copper foam treating low conductivity groundwater effluents
通过氮回收实现循环经济:用氢氧化钴纳米复合材料在泡沫铜上电催化还原硝酸盐,处理低电导率地下水废水
- DOI:10.1016/j.scitotenv.2023.163938
- 发表时间:2023
- 期刊:
- 影响因子:9.8
- 作者:Cerrón-Calle, Gabriel Antonio;Fajardo, Ana S.;Liu, Jingyue;Sánchez-Sánchez, Carlos M.;Garcia-Segura, Sergi
- 通讯作者:Garcia-Segura, Sergi
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Jingyue Liu其他文献
Malolactic fermentation performance of indigenous emOenococcus oeni/em strains from Shaanxi wine region (China) and their mutants on Pinot Noir and Chardonnay wines
来自中国陕西葡萄酒产区的本地欧氏乳杆菌(emOenococcus oeni)菌株及其突变体对黑皮诺和霞多丽葡萄酒的苹果酸-乳酸发酵性能
- DOI:
10.1016/j.lwt.2023.115170 - 发表时间:
2023-08-01 - 期刊:
- 影响因子:6.600
- 作者:
Nan Hao;Jingyue Liu;Fu Wang;Jiamin Cao;Qiling Chen;Ling He;Xueqiang Guan;Shuwen Liu;Kan Shi - 通讯作者:
Kan Shi
<span style="font-family:;" times="" new="" roman","serif";font-size:10.5pt;"="">Self-assembly of atomically thin and unusual face-centered-cubic Re nanowires within carbon nanotubes</sp
- DOI:
- 发表时间:
2015 - 期刊:
- 影响因子:
- 作者:
Xiulian Pan;Jingyue Liu;Mingrun Li;Xinhe Bao; - 通讯作者:
The Origins of High Spatial Resolution Secondary Electron Microscopy
高空间分辨率二次电子显微镜的起源
- DOI:
- 发表时间:
1992 - 期刊:
- 影响因子:0
- 作者:
M. Scheinfein;Jeffery Drucker;Jingyue Liu;J. Weiss;G. Hembree;J. M. Cowley - 通讯作者:
J. M. Cowley
Therapeutic effect of nebulized hypertonic saline for muco-obstructive lung diseases: a systematic review and meta-analysis with trial sequential analysis
雾化高渗盐水治疗粘液阻塞性肺疾病的治疗效果:系统评价和荟萃分析与试验序贯分析
- DOI:
10.1136/jim-2020-001479 - 发表时间:
2020 - 期刊:
- 影响因子:2.6
- 作者:
Yin Zhang;An;Jingyue Liu;J. Dai;Jilei Lin - 通讯作者:
Jilei Lin
Synthesis of Pd nanocrystals enclosed by {100} facets and with sizes <10 nm for application in CO oxidation
- DOI:
10.1007/s12274-010-0051-3 - 发表时间:
2010-10-27 - 期刊:
- 影响因子:9.000
- 作者:
Mingshang Jin;Hongyang Liu;Hui Zhang;Zhaoxiong Xie;Jingyue Liu;Younan Xia - 通讯作者:
Younan Xia
Jingyue Liu的其他文献
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{{ truncateString('Jingyue Liu', 18)}}的其他基金
CAS: Heteroatom Dimer and Cluster Catalysis
CAS:杂原子二聚体和簇催化
- 批准号:
2247571 - 财政年份:2023
- 资助金额:
$ 49万 - 项目类别:
Standard Grant
SusChEM: Anchoring Single Noble Metal Atoms for Better Catalysis
SusChEM:锚定单个贵金属原子以获得更好的催化作用
- 批准号:
1465057 - 财政年份:2015
- 资助金额:
$ 49万 - 项目类别:
Standard Grant
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