GOALI: Promotion Mechanisms of Supported Ag/Al2O3 Catalysts for Selective Ethylene Epoxidation

目标：负载型Ag/Al2O3催化剂选择性乙烯环氧化的促进机制

基本信息

批准号：
1804104
负责人：
Israel Wachs
金额：
$ 45万
依托单位：
Lehigh University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2018
资助国家：
美国
起止时间：
2018-09-01 至 2022-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1804104&HistoricalAwards=false
关键词：
GOALI Promotion Mechanisms Supported Ag

项目摘要

Ethylene oxide (EO) is a major industrial chemical intermediate used for the production of many consumer products (e.g., sterilization of heat sensitive tools in hospitals and medical equipment, pharmaceuticals, detergents, antifreeze, plastics, etc.) as well as numerous non-consumer chemicals. The great demand for EO makes it one of the highest production volume chemicals with US production leading the rest of the world. The catalyst market for EO is highly competitive with small increases in catalyst efficiency accounting for significant profits due to its large production volume. This NSF Grant Opportunities for Academic Liaison with Industry (GOALI) project establishes collaboration between Scientific Design Company, Inc. (SDCI, a small domestic EO catalyst manufacturer and engineering process designer) and Lehigh University (LU, a research institution with leading edge catalyst research capabilities). The SDCI-LU partnership will advance science and engineering of EO technology and infuse fundamental research activities into a small US manufacturing company. Successful outcome will reduce ethylene oxide manufacturing cost, increase US manufacturing jobs, and reduce undesirable CO2 emissions.Although silver catalysts for ethylene oxidation have received much attention over the years, there have been only a handful of studies on the role of promoters on the performance of industrial-type alumina-supported silver catalysts (promoters increase the EO selectivity from ~50 to ~90%). The SDCI-LU partnership will focus on the molecular level understanding of the promotion mechanisms for alumina-supported silver catalysts to establish fundamental structure-activity/selectivity relationships and microkinetic models to guide catalyst and process improvements. SDCI will prepare and test the catalysts under industrial reaction conditions, with LU students involved in these activities, and SDCI researchers and engineers will jointly supervise the LU graduate students. LU has state-of-the-art instrumentation and expertise for catalyst characterization under reaction conditions (in situ and operando spectroscopy). The experimental studies will be complemented with cutting edge theoretical modeling studies that will allow understanding the fundamentals of how catalyst structure and composition affect activity and EO selectivity. Such new and unprecedented fundamental insights are poised to reveal the role of promoters on alumina-supported silver catalysts for EO and establish a molecular-based kinetic model for ethylene oxidation by promoted alumina-supported silver catalysts. The SDCI-LU partnership will train and educate students that will recruited from underrepresented groups, expose students and faculty to industrial catalyst development and engineering, and expose industrial researchers and engineers to modern catalysis and engineering research. The information to be generated will be widely disseminated throughout the scientific community by presentations, publications, websites, and integration into LU curricula and several outreach activities to underrepresented groups.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.

环氧乙烷 (EO) 是一种主要的工业化学中间体，用于生产许多消费品（例如，医院和医疗设备中的热敏工具的灭菌、药品、清洁剂、防冻剂、塑料等）以及许多非消费化学品。对环氧乙烷的巨大需求使其成为产量最高的化学品之一，美国的产量领先于世界其他地区。环氧乙烷催化剂市场竞争激烈，由于产量大，催化剂效率的小幅提高带来了可观的利润。这项 NSF 学术与工业联络机会 (GOALI) 项目建立了 Scientific Design Company, Inc.（SDCI，一家小型国内 EO 催化剂制造商和工程工艺设计者）和 Lehigh 大学（LU，一家拥有领先催化剂研究的研究机构）之间的合作能力）。 SDCI-LU 的合作伙伴关系将推进 EO 技术的科学和工程，并将基础研究活动注入美国一家小型制造公司。成功的结果将降低环氧乙烷的制造成本，增加美国制造业就业机会，并减少不良二氧化碳排放。尽管多年来乙烯氧化银催化剂受到了广泛关注，但关于促进剂对性能的作用的研究却很少工业型氧化铝负载银催化剂（促进剂将 EO 选择性从 ~50% 提高到 ~90%）。 SDCI-LU 合作伙伴关系将侧重于对氧化铝负载银催化剂的促进机制的分子水平理解，以建立基本的结构-活性/选择性关系和微动力学模型，以指导催化剂和工艺改进。 SDCI将在工业反应条件下制备和测试催化剂，由岭大的学生参与这些活动，SDCI的研究人员和工程师将共同指导岭大的研究生。 LU 拥有最先进的仪器和专业知识，可用于反应条件下的催化剂表征（原位光谱和操作光谱）。实验研究将与前沿的理论模型研究相补充，从而了解催化剂结构和成分如何影响活性和环氧乙烷选择性的基础原理。这些新的、前所未有的基本见解有望揭示助催化剂在氧化铝负载的银催化剂上对环氧乙烷的作用，并通过促进的氧化铝负载的银催化剂建立基于分子的乙烯氧化动力学模型。 SDCI-LU 合作伙伴关系将为从代表性不足的群体中招募的学生提供培训和教育，让学生和教师了解工业催化剂的开发和工程，并使工业研究人员和工程师了解现代催化和工程研究。产生的信息将通过演讲、出版物、网站以及纳入 LU 课程和针对代表性不足群体的多项外展活动在整个科学界广泛传播。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准。

项目成果

期刊论文数量（5）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Nature and Reactivity of Oxygen Species on/in Silver Catalysts during Ethylene Oxidation

乙烯氧化过程中银催化剂上/内部氧的性质和反应性

DOI：
10.1021/acscatal.1c05939
发表时间：
2022-04
期刊：
ACS Catalysis
影响因子：
12.9
作者：
Pu, Tiancheng;Setiawan, Adhika;Mosevitzky Lis, Bar;Zhu, Minghui;Ford, Michael E.;Rangarajan, Srinivas;Wachs, Israel E.
通讯作者：
Wachs, Israel E.

Computing a Global Degree of Rate Control for Catalytic Systems

计算催化系统的全局速率控制程度

DOI：
10.1021/acscatal.0c03150
发表时间：
2020-11-05
期刊：
ACS Catalysis
影响因子：
12.9
作者：
Huijie Tian;S. Rangarajan
通讯作者：
S. Rangarajan

Resolving the Oxygen Species on Ozone Activated AgAu Alloy Catalysts for Oxidative Methanol Coupling

解析用于甲醇氧化偶联的臭氧活化银金合金催化剂上的氧形态

DOI：
10.1021/acs.jpcc.2c03769
发表时间：
2022-12-08
期刊：
The Journal of Physical Chemistry C
影响因子：
0
作者：
Tiancheng Pu;J. Jehng;Adhi Setiawan;Bar Mosevitzky Lis;M. E. Ford;S. Rangarajan;I. Wachs
通讯作者：
I. Wachs

Leveraging Thermochemistry Data to Build Accurate Microkinetic Models

利用热化学数据构建准确的微动力学模型