Crystallization of ZSM-5 zeolite under microgravity |
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| Affiliation: | 1. Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China;2. College of Light Chemical Industry and Material Engineering, Shunde Polytechnic, Foshan 528300, China;3. The University of Chinese Academy of Sciences, Beijing 100039, China;4. Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics, Guangzhou 510650, China;5. CAS Engineering Laboratory for Special Fine Chemicals, Guangzhou 510650, China;6. Incubator of Nanxiong CAS Co. Ltd., Nanxiong 512400, China;1. Anhui Engineering Laboratory of Agro-Ecological Big Data, Anhui University, Hefei 230601, China;2. Hefei Institute of Physical Science, Chinese Academy of Sciences, Hefei, 230031,China |
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| Abstract: | Crystal growth of ZSM-5 zeolite under microgravity was carried out using a Soviet reentry system. The space-grown zeolite was composed of grains of uniform shape and size (ca. 10 μm). Most of zeolite grains were linked with each other by the edge of the grain. The electron diffraction of each grain showed a single-crystal diffraction pattern, indicating the presence of well-crystallized zeolite crystal. The relatively large difference in the surface Al concentration existed between different crystals of the space-grown zeolite, as compared with the zeolite crystals synthesized in the ground with stirring. Based on these results, the crystals growth of zeolite in the microgravity environment was discussed. |
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