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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 HanState Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, ChinaGuiyuan JiangState Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, ChinaShanlei HanState Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, ChinaJia LiuState Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, ChinaYaoyuan ZhangState Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, ChinaYeming LiuState Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, ChinaRuipu WangState Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, ChinaZhen ZhaoState Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, ChinaChunming XuState Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, ChinaYajun WangState Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, ChinaAijun DuanState Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, ChinaJian LiuState Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, ChinaYuechang WeiState Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China

2016en

ABI

Annotatsiya

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 Ga2O3/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.

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Identifikatorlar

DOI: 10.3390/catal6010013

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