TY - JOUR
T1 - The fabrication of Ga2O3/ZSM-5 hollow fibers for efficient catalytic conversion of n-Butane into light olefins and aromatics
AU - Han, Jing
AU - Jiang, Guiyuan
AU - Han, Shanlei
AU - Liu, Jia
AU - Zhang, Yaoyuan
AU - Liu, Yeming
AU - Wang, Ruipu
AU - Zhao, Zhen
AU - Xu, Chunming
AU - Wang, Yajun
AU - Duan, Aijun
AU - Liu, Jian
AU - Wei, Yuechang
N1 - Publisher Copyright:
© 2016 by the authors; licensee MDPI, Basel, Switzerland.
PY - 2016/1/15
Y1 - 2016/1/15
N2 - 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.
AB - 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.
KW - Bifunctional catalyst
KW - Catalytic conversion
KW - GaO
KW - N-butane
KW - ZSM-5 hollow fiber
UR - http://www.scopus.com/inward/record.url?scp=84955251371&partnerID=8YFLogxK
U2 - 10.3390/catal6010013
DO - 10.3390/catal6010013
M3 - Article
AN - SCOPUS:84955251371
SN - 2073-4344
VL - 6
JO - Catalysts
JF - Catalysts
IS - 1
M1 - 13
ER -