Development of New Materials and Methods for Effective, Selective, and Energy-efficient Olefin/Paraffin Separation and Ethylene Detection

开发有效、选择性和节能的烯烃/石蜡分离和乙烯检测的新材料和方法

• 批准号: 1954456
• 负责人: Rasika Dias
• 金额: $ 49.5万
• 依托单位: University of Texas at Arlington
• 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: 2020-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1954456&HistoricalAwards=false
• 关键词: Development; New; Materials; Methods; Effective

Important chemical feedstocks include a group of molecules called alkenes, molecules that contain carbon-carbon double bonds. The alkenes are used in the manufacture of many important plastics and include ethylene, which is used to make polyethylene; propylene, which is used to make polypropylene; and a several others. The alkenes are produced during the refining of crude oil. However, they are always obtained as complex mixtures of alkenes and other petroleum components. In order to obtain pure alkenes, crude oil mixtures are separated using an energy-intensive distillation process. Presently, ethylene and propylene purification alone accounts for about 0.3% of the world’s total energy consumption. A more a efficient separation technique for alkenes would be of great benefit. Toward this end, Dr. Rasika Dias, University of Texas at Arlington (UTA), is supported by the Chemical Synthesis Program to develop metal compounds that are capable of separating alkenes at room temperature and pressure. The general method prepares copper compounds that bind specific alkenes and can be induced to release the alkene in a targeted way. This behavior may be used for the low energy purification of alkenes. As an ancillary effort, the copper and related silver compounds are modified to detect alkenes. This is important not only to monitor industrial environments, but also to a number of fruit and flower industries as ethylene induces the ripening of fruit (such as bananas)and the degradation of flowers. This project integrates research into the educational experience for undergraduate, graduate, and postdoctoral students, and prepares them for productive careers physical science. Professor Dias plans to recruit students from traditionally underrepresented groups including McNair and LSAMP programs, offering research opportunities in his laboratory. High-school and Community College student mentoring activities are also planned. Professor Dias organizes a symposium at UTA inviting Assistant Professors and Postdoctoral Fellows to meet and share their research findings. He also organizes a workshop on X-ray crystallography to benefit area crystallographers and utilizes the UTA Planetarium facilities to educate and excite young audiences (including pre-K) in science.In this project, copper and silver complexes of multi-dentate pyrazolate ligands are synthesized and their abilities to selectively and reversibly bind ethylene, propylene, and butane are evaluated. A systematic study is undertaken to discern how the overall heat of the olefin-binding can be managed through modification of the supporting ligands. The goal of this research is to design compounds that facilitate olefin-paraffin separations. A second focus concentrates on the development of sensors to detect ethylene. In this effort, a family of luminescent copper and silver pyrazolate complexes that produce optical signals upon exposure to olefins are prepared. Overall, the project investigates the structure, bonding, and reactivity of late d-block complexes with labile metal-ligand interactions. Students contributing to this project will gain valuable experience in synthesis, modern characterization techniques, and critical thinking.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.

重要的化学原料包括一组称为烯烃的分子，这些分子含有碳-碳双键，用于制造许多重要的塑料，包括用于制造聚乙烯的乙烯；用于制造聚丙烯的丙烯。烯烃是在原油精炼过程中产生的，但它们总是以烯烃和其他石油成分的复杂混合物形式获得。 Rasika 博士表示，目前，仅乙烯和丙烯纯化就占世界总能源消耗的 0.3% 左右。德克萨斯大学阿灵顿分校 (UTA) 的 Dias 在化学合成计划的支持下，开发了能够在室温和压力下分离烯烃的金属化合物，并通过通用方法制备铜化合物。结合特定的烯烃并可以被诱导以有针对性的方式释放烯烃。作为辅助工作，铜和相关的银化合物被修饰以检测烯烃。不仅可以监测工业环境，还可以监测许多水果和花卉行业，因为乙烯会导致水果（如香蕉）成熟和花卉退化。该项目将研究融入本科生、研究生和博士后的教育经验中。迪亚斯教授计划从传统上代表性不足的群体中招收学生，包括麦克奈尔和 LSAMP 项目，并在他的实验室提供研究机会。迪亚斯教授还计划组织学生指导活动。他还组织了一次 X 射线晶体学研讨会，使当地晶体学家受益，并利用 UTA 天文馆设施进行教育。在这个项目中，合成了多齿吡唑盐配体的铜和银配合物，并对它们选择性和可逆地结合乙烯、丙烯和丁烷的能力进行了系统研究。旨在了解如何通过修饰支持配体来控制烯烃结合的整体热量。本研究的目标是设计促进烯烃-石蜡分离的化合物。开发检测乙烯的传感器在这项工作中，制备了一系列在暴露于烯烃时产生光学信号的发光铜和吡唑酸银络合物。总体而言，该项目研究了晚期 d-嵌段络合物的结构、键合和反应性。参与该项目的学生将获得合成、现代表征技术和批判性思维方面的宝贵经验。该奖项反映了 NSF 的法定使命，并通过使用基金会的评估被认为值得支持。智力价值和更广泛的影响审查标准。

项目成果

Copper( i ) and silver( i ) chemistry of vinyltrifluoroborate supported by a bis(pyrazolyl)methane ligand

双(吡唑基)甲烷配体负载的乙烯基三氟硼酸盐的铜( i ) 和银( i ) 化学

• DOI: 10.1039/d1dt00974e
• 发表时间: 2021
• 期刊: Dalton Transactions
• 影响因子: 4
• 作者: Zacharias, Adway O.;Mao, James X.;Nam, Kwangho;Dias, H. V.
• 通讯作者: Dias, H. V.

Coinage metal metallacycles involving a fluorinated 3,5-diarylpyrazolate

• DOI: 10.1039/d0nj03744c
• 发表时间: 2020-09
• 期刊: New Journal of Chemistry
• 影响因子: 3.3
• 作者: J. S. Lakhi;Monika R. Patterson;H. V. Rasika Dias

Gold( i ) ethylene complexes supported by electron-rich scorpionates

富电子蝎子负载的金( i )乙烯配合物

• DOI: 10.1039/d0cc07717h
• 发表时间: 2021
• 期刊: Chemical Communications
• 影响因子: 4.9
• 作者: Wu, Jiang;Noonikara-Poyil, Anurag;Muñoz-Castro, Alvaro;Dias, H. V.
• 通讯作者: Dias, H. V.

Tetranuclear and trinuclear copper( i ) pyrazolates as catalysts in copper mediated azide–alkyne cycloadditions (CuAAC)

四核和三核吡唑铜(i)作为铜介导的叠氮化物-炔环加成反应(CuAAC)的催化剂

• DOI: 10.1039/d1dt04026j
• 发表时间: 2021
• 期刊: Dalton Transactions
• 影响因子: 4
• 作者: Patterson, Monika R.;Dias, H. V.
• 通讯作者: Dias, H. V.

A Molecular Compound for Highly Selective Purification of Ethylene

一种用于高选择性纯化乙烯的分子化合物

• DOI: 10.1002/anie.202109338
• 发表时间: 2021
• 期刊: Angewandte Chemie International Edition
• 作者: Noonikara‐Poyil, Anurag;Cui, Hui;Yakovenko, Andrey A.;Stephens, Peter W.;Lin, Rui‐Biao;Wang, Bin;Chen, Banglin;Dias, H. V. Rasika
• 通讯作者: Dias, H. V. Rasika