1. 毕业设计（论文）的内容和要求
1.了解DD3R分子筛膜的基本结构；2.了解DD3R分子筛膜的其他用途；3.掌握DD3R分子筛膜分离He/CH4的原理；3.探究DD3R分子筛膜在He/CH4分离性能。
2. 参考文献
1. Gascon, J.; Blom, W.; van Miltenburg, A.; Ferreira, A.; Berger, R.; Kapteijn, F., Accelerated synthesis of all-silica DD3R and its performance in the separation of propylene/propane mixtures. Microporous Mesoporous Mater 2008, 115 (3), 585-593.2. Crawford, P. G. Zeolite membranes for the separation of krypton and xenon from spent nuclear fuel reprocessing off-gas. Georgia Institute of Technology, 2013.3. Denning, S.; Lucero, J.; Koh, C. A.; Carreon, M. A., Chabazite Zeolite SAPO-34 Membranes for He/CH4 Separation. ACS Materials Letters 2019, 1 (6), 655-659.4. Wang, X.; Zhang, Y.; Wang, X.; Andres-Garcia, E.; Du, P.; Giordano, L.; Wang, L.; Hong, Z.; Gu, X.; Murad, S.; Kapteijn, F., Xenon Recovery by DD3R Zeolite Membranes: Application in Anaesthetics. Angew Chem Int Ed 2019, 58 (43), 15518-15525.5. Kuhn, J.; Castillo-Sanchez, J. M.; Gascon, J.; Calero, S.; Dubbeldam, D.; Vlugt, T. J. H.; Kapteijn, F.; Gross, J., Adsorption and diffusion of water, methanol, and ethanol in all-silica DD3R: Experiments and simulation. J Phys Chem C 2009, 113 (32), 14290-14301.6. Jee, S. E.; Sholl, D. S., Carbon dioxide and methane transport in DDR zeolite: Insights from molecular simulations into carbon dioxide separations in small pore zeolites. J Am Chem Soc 2009, 131 (22), 7896-7904.7. Himeno, S.; Tomita, T.; Suzuki, K.; Yoshida, S., Characterization and selectivity for methane and carbon dioxide adsorption on the all-silica DD3R zeolite. Microporous Mesoporous Mater 2007, 98 (1), 62-69.8. Zhu, W.; Kapteijn, F.; Moulijn, J. A.; Jansen, J. C., Selective adsorption of unsaturated linear C4 molecules on the all-silica DD3R. Phys Chem Chem Phys 2000, 2 (8), 1773-1779.
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