Understanding and Exploiting the Favorable Role of Non-Stoichiometric Oxygen in Bulk Metal Oxide Catalyzed Partial Oxidation of Light Alkanes

了解和利用非化学计量氧在块体金属氧化物催化轻质烷烃部分氧化中的有利作用

基本信息

批准号：
2128846
负责人：
Praveen Bollini
金额：
$ 49.98万
依托单位：
University of Houston
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2022
资助国家：
美国
起止时间：
2022-02-01 至 2025-01-31
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2128846&HistoricalAwards=false
关键词：
Understanding Exploiting Favorable Role Non

项目摘要

Our Nation’s transition to clean energy requires more efficient utilization of fossil fuels combined with a transition to sustainable or biorenewable fuels generated through alternative energy sources such electricity produced from solar or wind energy. The current chemical market relies heavily on ethene – produced from the steam cracking of ethane (from natural gas) - to manufacture a wide range of commodity chemicals. Steam cracking is an energy-intensive process. The project explores an alternative, less energy-intensive, process for ethene manufacture via the oxidative dehydrogenation of ethane (ODHE). Controlled introduction of oxygen – in ways that promote ethene production without deeper oxidation to waste products such as carbon monoxide (CO) and carbon dioxide (CO2) – has been a major impediment to the commercial introduction of ODHE technology. The project addresses this technology gap by exploring a novel catalytic approach for enhancing ethene production while decreasing energy consumption. New catalyst synthesis techniques will be combined with reaction engineering concepts to achieve optimal supply of oxygen. In addition to facilitating the clean energy transition, the project includes educational and outreach efforts that raise awareness of the need for clean energy as related to carbon emissions and climate impact, while also training future scientists and engineers. Introduction of excess, non-stoichiometric oxygen in light-alkane ODH, while favorable for producing exothermicity and lowering the reaction temperature, has traditionally been avoided due to lower olefin selectivity associated with production of CO and CO2. The project seeks a paradigm shift in the study and design of bulk metal oxide catalysts by evidencing and exploiting a potentially favorable role of oxygen present in excess of that stipulated by metal oxide catalyst stoichiometry. Novel methods for assessing active site requirements on oxide surfaces, involving a range of kinetic, isotopic, and spectroscopic tools to assess the mechanistic function of non-stoichiometric oxygen, will be combined with advanced synthetic strategies for manipulating the catalytic function of surface oxygen moieties through control over dopant distribution and crystal habit. This synergistic approach - combining mechanistic investigations and advanced crystallization techniques such as molten salt syntheses - although applied specifically to nickel oxide catalyzed ODHE, may prove broadly applicable to high temperature catalytic partial oxidation reactions of industrial importance. Catalysts developed as part of the proposed work could form the basis for an inexpensive, energy-efficient route to producing ethene due to significantly lower operation temperatures compared to conventional processes. The investigators will use the findings of these studies in graduate-level courses at their institution, while continuing on-going STEM outreach activities in the Houston area including UH Energy Day and Chevron Girls Engineering the Future Day, providing high school students with hands-on research experience (Project ACS SEED), and mentoring undergraduate researchers.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.

OUR NATION's Transition to Cleangy RequiRes More More More OF FOSSILS COMBINED WITH A TRANSITION TORANSITION TORANSITION TORANSITION LS Generated Through Alternative Energy Such Electricity Produced from Solar or Wind Energy. ENE - Produced from the Steam Cracking OF ETHANE (from Natural Gas) -To Manufacture A蒸汽破裂的范围是能量密集型过程。一氧化碳（CO）Arboon二氧化物（CO2） - 通过探索增强新的催化能量构建的方法来解决技术差距，以解决技术差距。 DES的教育和外展工作，使人们对清洁能源的需求与碳排放和气候影响有关，同时培训未来的科学家和工程师。传统上，放热性和降低反应温度的选择性较低，而CO和CO2的产生和散装金属氧化物催化剂的设计是通过演示和利用金属氧化物催化剂sto量符号的过量氧气中的潜在有利作用来实现的。 C和光谱工具通过控制氧化和晶体习惯，从而使表面氧的催化功能和先进的结晶效果（例如熔融合成）（例如，在镍含量上添加到镍氧化物催化的ODHE）高温催化的部分氧化催化剂作为支撑工作的一部分开发，构成了廉价的，能效的E，因为在研究生级别的研究中，在研究生级别的研究中，生产乙烯的E乙烯是显着较低的。 Housea中正在进行的STEM外展活动，包括UH Energy和Chevron Girls在未来的一天，为高中生提供动手研究经验（Project ACS Seed），并指导地下研究人员。该奖项反映了NSF'Sfflutory Mission Demeed Demeed Demeed Worthy Worthy Worthy使用基金会的UAL功绩和更广泛的影响审查标准的支持Thalugh评估。