Catalysis Today, Vol.279, 115-123, 2017
A binder-free fluidizable Mo/HZSM-5 catalyst for non-oxidative methane dehydroaromatization in a dual circulating fluidized bed reactor system
This work highlights the need for a two beds type of circulating fluidized bed reactor system and a binder free fluidizable Mo/HZSM-5 catalyst for processing non-oxidative methane dehydroaromatization. Also discussed is the process optimization by varying temperature, CH4 space velocity, the height of catalyst bed and the mean catalyst residence times in a CH4 convertor and the paired catalyst regenerator for the binder-free Mo/HZSM-5. Typical profiles of CH4 conversion and benzene yield versus time obtained under continuous catalyst regeneration mode are discussed to show the high activity and stability of the binder-free catalyst as well as its high resistance towards attrition at 1073 K and continuous circulation conditions. Recommendations to obtain an advanced binder-free Mo/HZAM-5 catalyst are made in improving the coking resistance, hydrogen regeneration activity and benzene formation activity of the binder-free catalyst. (C) 2016 Elsevier B.V. All rights reserved.
Keywords:Methane dehydroaromatization;Binder-free Mo/HZSM-5;Circulating fluidized bed;Operating parameters