Sorption Enhanced Mixed Matrix Membranes for Hydrogen (H₂) Purification and Carbon Dioxide (CO₂) Capture [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 660.2 General topics in chemical engineering
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Office of the Assistant Secretary of Energy for Fossil Energy ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2020
• Mô tả vật lý: Medium: ED : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 267921
• Chủ đề: 1. 01 coal, lignite, and peat; 2. 08 hydrogen; 3. 20 fossil-fueled power plants; 4. 36 materials science; 5. 37 inorganic, organic, physical, and analytical chemistry

Tóm tắt

 The technical objective of this project was to develop sorption enhanced mixed matrix membranes with H<
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  permeance of 500 gas permeance units (GPU) and H<
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 /CO<
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  selectivity of 30 at 150-200 �C. These membranes will be the central component in the design of membrane based systems for 90% capture of CO<
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  from coal-derived syngas, with 95% CO<
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  purity at a cost of electricity 30% less than baseline capture approaches. The unique approach in this proposal is to design crosslinked polymers containing Pd-based nanoparticles achieving strong H<
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  sorption and size sieving ability and thus H<
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 /CO<
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  selectivity. The specific objectives for each budget period (BP) are described below. BP 1: Identify polymer matrix with strong size sieving ability and palladium (Pd)-containing nanomaterials to prepare freestanding mixed matrix films with H<
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  permeability of 50 Barrer and H<
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 /CO<
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  selectivity of 30 at 150-200�C with simulated syngas. BP 2: Prepare and optimize thin film mixed matrix composite membranes materials with H<
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  permeance of 500 GPU and H<
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 /CO<
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  selectivity of 30 at 150-200 �C, and complete the modification of the membrane test unit for the field test in the BP 3. BP 3: Conduct a 20-day field test of the membranes with real syngas at Center for Advanced Energy Research (CAER) of the University of Kentucky (UKy). During the BP2, we have successfully prepared thin-film composite (TFC) membranes based on mixed matrix materials (MMMs) containing Pd nanoparticles in polymers, and demonstrated their superior and robust performance for H<
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  separation at 150 ? 225 �C. <
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 Production of the Pd based nanoparticles with a diameter of 4 nm has been scaled up to 200 mg/day. <
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 We have prepared TFC membranes with H<
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  permeance above 500 GPU and H<
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 /CO<
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  selectivity above 30 at temperatures up to 225 �C, which meet the targets for the BP2. <
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 We have conducted parametric studies of TFC membranes with a mixed gas containing H<
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 S and H<
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 O and demonstrated the stability of the membranes. <
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 We have established a new testing plan at the Center for Advanced Energy Studies (CAER) at the University of Kentucky because NCCC decided to shut down their gasifier.<
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  During this project, four Ph.D. students received the inter-disciplinary training and graduated, including Shailesh Konda, Maryam Omidvar, Deqiang Yin, and Lingxiang Zhu. One postdoctoral researcher (Dr. Liang Huang) and two Ph.D. students (Abhishek Kumar and Hien Nguyen) are involved in this project. The project leads to one provisional patent application, eight peer-reviewed articles, and one manuscript in preparation. The details are shown below.