Hydrogen from Ethanol via Integrated Ceramic Microchannel Membrane Networks

方案编号：0730820PRINCIPAL研究员：Benjamin Wilhite研究所：康涅狄格州大学PROPOSAL标题：通过集成陶瓷微通道膜网络从乙醇中制氢本项目的目标是在陶瓷微通道集成网络内研究耦合催化乙醇水蒸气转化膜和催化水-气变换膜，每个膜都采用复合钯-催化膜。微米级液压直径的使用大大增加了膜的表面积，同时消除了流体内质量传输的限制。将多个分离的膜过程集成在一个单元中，可以进一步提高过程的集约性、便携性、可扩展性和能量密度。由此产生的膜装置将能够处理乙醇和水的混合物，并且只提供纯氢。这项拟议的研究提供了对多个综合分离过程之间相互作用的基本理解。将对多种低温和高温材料进行气体净化研究。将乙醇催化重整制氢与氢气提纯相结合，可以研究反应和提纯之间的相互作用，以及相应的高纯度氢气产生的表面和传输机理。拟议研究的更广泛影响是引入了一类新的集成陶瓷膜微通道网络，能够允许多个独立的膜过程在单个结构内相互作用和增强。这些膜微通道网络结合了微机械加工和陶瓷挤压的优点，同时消除了各自的净化障碍，并将发电与净化、系统复杂性和成本相结合。通过将该实验系统应用于燃料电池系统的氢气提取，旨在为替代能源技术和氢能基础设施的发展做出贡献。该项目的重点是努力提高微技术和陶瓷加工的利用率，以满足未来的能源需求，以提高反应堆的效率、便携性和销售性。将采用所述实验系统的修改版本来开发课堂和基于实验室的学习模块，向学生传授分离原理和基本原理。这一工作为未来将脱硫与水蒸气转化和水-气变换相结合的膜的开发奠定了基础。因此，拟议的研究不仅将有助于科学地了解集成膜系统中的运输问题，而且还将有助于继续开发清洁、零排放、可再生能源的未来。

PROPOSAL NUMBER: 0730820PRINCIPAL INVESTIGATOR: Benjamin Wilhite INSTITUTION: University of ConnecticutPROPOSAL TITLE: Hydrogen from Ethanol via Integrated Ceramic Microchannel Membrane NetworksThe objective of this project is to investigate coupling catalytic ethanol steam reforming membranes and catalytic water-gas-shift membranes, within an integrated network of ceramic microchannels, each employing composite palladium-catalyst membranes. Use of micron-scale hydraulic diameters greatly enhances membrane surface areas while simultaneously removing intra-fluid mass transport limitations. Integration of multiple separate membrane processes within a single unit allows further improvements in process intensification, portability, scalability and energy density. The resulting membrane device will be capable of processing ethanol-water mixtures and delivering only pure hydrogen. The proposed research provides fundamental understanding of interactions between multiple integrated separations processes. Gas purification studies will be performed for multiple low- and high-temperature materials. Coupling of catalytic reforming of ethanol to hydrogen with hydrogen purification enables investigation of the interplay between reaction and purification and corresponding surface and transport mechanisms for high-purity hydrogen generation. The broader impact of the proposed research is the introduction of a new class of integrated ceramic membrane microchannel networks, capable of allowing multiple separate membrane processes to interact and enhance each other within a single structure. These membrane microchannel networks combine advantages of micromachining and ceramics extrusion while removing respective barriers to purification and coupled generation with purification, system complexity and cost. By applying the experimental system to hydrogen extraction for fuel-cell systems, the research aims to contribute to the development of alternative energy technologies and hydrogen energy infrastucture. This project focuses on efforts to improve utilization of both microtechnology and ceramics processing in meeting future energy needs to improve reactor efficiency, portability and marketability. A modified version of the described experimental system will be employed for development of classroom and laboratory-based learning modules for teaching students about separations principles and fundamentals. This effort lays the groundwork for future development of membranes integrating desulfurization with steam reforming and water-gas-shift. Thus, the proposed research will contribute not only to scientific understanding of transport issues in integrated membrane systems, but also to the continued development of a clean, emission-free, renewable energy future.