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The Fabrication of Ga2O3/ZSM-5 Hollow Fibers for Efficient Catalytic Conversion of n-Butane into Light Olefins and Aromatics Jing Han, Guiyuan Jiang, Shanlei Han, Jia Liu, Yaoyuan Zhang, Yeming Liu, Ruipu Wang, Zhen Zhao, Chunming Xu, Yajun Wang, Aijun Duan, Jian Liu and Yuechang Wei Abstract: In this study, the dehydrogenation component of Ga2O3 was introduced into ZSM-5 nanocrystals to prepare Ga2O3/ZSM-5 hollow fiber-based bifunctional catalysts. The physicochemical features of as-prepared catalysts were characterized by means of XRD, BET, SEM, STEM, NH3-TPD, etc., and their performances for the catalytic conversion of n-butane to produce light olefins and aromatics were investigated. The results indicated that a very small amount of gallium can cause a marked enhancement in the catalytic activity of ZSM-5 because of the synergistic effect of the dehydrogenation and aromatization properties of Ga2O3 and the cracking function of ZSM-5. Compared with Ga2 O3 /ZSM-5 nanoparticles, the unique hierarchical macro-meso-microporosity of the as-prepared hollow fibers can effectively enlarge the bifunctionality by enhancing the accessibility of active sites and the diffusion. Consequently, Ga2O3/ZSM-5 hollow fibers show excellent catalytic conversion of n-butane, with the highest yield of light olefins plus aromatics at 600 ̋C by 87.6%, which is 56.3%, 24.6%, and 13.3% higher than that of ZSM-5, ZSM-5 zeolite fibers, and Ga2O3/ZSM-5, respectively. 1. Introduction Light olefins, including ethene, propene, butene, etc. are important basic chemical raw materials and the demand for them stays at a high level. Aromatic hydrocarbons, such as benzene, toluene, and xylene, are also significant materials for organic chemical production, which are widely used in the production of synthetic fiber, resin, and rubber. For the past few years, crude processing capacity of refinery continues to improve, resulting in the by-production of a large amount of C4 hydrocarbons. Among C4 hydrocarbons, many processes on the conversion of C4 alkenes have been reported, including catalytic cracking, disproportionation, etc. However, C4 alkanes, as important components of C4 hydrocarbons, due to their Reprinted from Catalysts. Cite as: Han, J.; Jiang, G.; Han, S.; Liu, J.; Zhang, Y.; Liu, Y.; Wang, R.; Zhao, Z.; Xu, C.; Wang, Y.; Duan, A.; Liu, J.; Wei, Y. The Fabrication of Ga2O3/ZSM-5 Hollow Fibers for Efficient Catalytic Conversion of n-Butane into Light Olefins and Aromatics. Catalysts 2016, 6, 13. 177PDF Image | Zeolite Catalysis
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