Abstract
The influence of pseudo-boehmite binder on the catalytic properties of dealuminated mordenite (MOR) catalyst for Friedel–Crafts alkylation was investigated. Solid-state 27Al MAS NMR spectroscopy, temperature-programmed desorption of ammonia (NH3-TPD), BET surface area measurement and catalyst particle mechanical strength were used to characterize the catalysts. It was observed that the addition of pseudo-boehmite binder results in improvement in terms of pore size distribution and its mechanical strength. Furthermore, the dredged pore path of MOR was not destroyed although the acid amount and acid type were adjusted properly when the modified MOR was calcinated. Among these catalysts studied, the catalyst bound with 10 wt% pseudo-boehmite binder showed the best catalytic performance in terms of yield and stability, which can be attributed to its maximum medium strong acid amount and its structural properties which is favorable for fast diffusion of products.
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The authors are grateful to the financial supports of National Natural Science Foundation of China (Grant No. 21306023, 21376051, 21106017), Natural Science Foundation of Jiangsu Province of China (Grant No. BK20131288), Fund Project for Transformation of Scientific and Technological Achievements of Jiangsu Province of China (Grant No. BA2011086), Key Program for the Scientific Research Guiding Found of Basic Scientific Research Operation Expenditure of Southeast University (Grant No. 3207043101) and Instrumental Analysis Fund of Southeast University.
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Sheng, X., Zhou, Y., Kong, J. et al. Influence of pseudo-boehmite binder modified dealuminated mordenite on Friedel–Crafts alkylation. J Porous Mater 22, 179–185 (2015). https://doi.org/10.1007/s10934-014-9884-6
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DOI: https://doi.org/10.1007/s10934-014-9884-6