EAGER: Catalytic oligomerization of methane using solid super acids

EAGER：使用固体超强酸催化甲烷低聚

• 批准号: 1644895
• 负责人: James Spivey
• 金额: $ 10万
• 依托单位: Louisiana State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-08-15 至 2018-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1644895&HistoricalAwards=false
• 关键词: EAGER; Catalytic; oligomerization; methane; using

The growth of shale resources has resulted in increased flaring of natural gas, especially methane - its chief constituent - due to poor economics of collecting and transporting gas from remote and distributed sources such as shale deposits. Technologies are needed that can convert methane to transportable liquid fuels and chemicals at the well-head and at smaller scale than typically utilized in refinery or petrochemical complexes. Processes that can effect the direct conversion of methane are particularly appealing based on manufacturing simplicity, more favorable economics, and scalability. This project is an exploratory study to investigate a process for converting methane gas to longer chain hydrocarbons utilizing solid acid catalyst technology compatible with field-based modular chemical manufacturing (MCM) facilities.This EAGER project explores the feasibility of direct methane oligomerization utilizing a solid superacid catalyst based on the binary Lewis/Bronsted (L/B) superacid H+/(AlBr4)-. The superacid catalyst approach is based on a posited reaction mechanism that first transfers a proton from the acid catalyst to the methane to make a (CH5)+ species, in contrast to the usual hydrogen abstraction mechanism that inevitably results in high coking tendency. Although preliminary work by the investigators has suggested the superacid based oligomerization chemistry works in the gas phase, a practical application will require a supported version of the catalyst. Thus, the proposal focuses on the synthesis, characterization, and catalytic performance evaluation of supported versions of both the simple AlCl3 and AlBr3 solid acid catalysts and the binary (L/B) solid super acid catalyst derived from reacting HBr with the supported AlBr3 solid acid catalyst. Successful completion of the project would set the stage for more detailed mechanistic investigations as well as optimization of support and metal(M)-halide(X) combinations. Ultimately, supported superacid catalyst technology could represent an efficient and lower capital cost alternative to current practices for utilizing the huge amount of methane resources from shale gas.The award is co-funded by the NSF/ENG Office of Emerging Frontiers and Multidisciplinary Activities.

页岩资源的增长导致天然气的爆发，尤其是甲烷（其主要成分），这是由于收集和运输天然气从偏远和分布的来源（例如页岩沉积物）的经济性差。 需要技术可以将甲烷转换为井头和尺度较小的可运输液体燃料和化学物质的技术，而不是通常在炼油厂或石化络合物中使用的技术。 基于制造简单性，更有利的经济学和可扩展性，可以直接转化甲烷的过程特别有吸引力。 This project is an exploratory study to investigate a process for converting methane gas to longer chain hydrocarbons utilizing solid acid catalyst technology compatible with field-based modular chemical manufacturing (MCM) facilities.This EAGER project explores the feasibility of direct methane oligomerization utilizing a solid superacid catalyst based on the binary Lewis/Bronsted (L/B) superacid H+/(AlBr4)-. 超酸催化剂方法基于一种假定的反应机制，该机制首先将质子从酸催化剂转移到甲烷中，形成（CH5）+物种，与普通的抽象机制相反，这不可避免地会导致高碳酸趋势。 尽管研究人员的初步工作表明，在天然气阶段，基于超酸的寡聚化学作品，实际应用将需要催化剂的支持版本。 因此，该提案的重点是对简单ALCL3和ALBR3固体酸催化剂的支持版本的合成，表征和催化性能评估，以及源自HBR与支持的ALBR3固体酸催化剂的二元（L/B）固体超级酸催化剂。 该项目的成功完成将为更详细的机械研究以及支持和金属（M） - 黑甲（X）组合的优化奠定基础。 最终，支持的超酸催化剂技术可能代表了当前实践的有效且较低的资本成本替代方案，用于利用页岩气中的大量甲烷资源。该奖项由新兴领域和多学科活动的NSF/ENG办公室共同资助。