Journal
CATALYSIS TODAY
Volume 233, Issue -, Pages 8-13Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cattod.2014.02.007
Keywords
ZSM-5; Methanol to aromatics: Fluidized bed; reactor; Yield; Selectivity
Funding
- National 863 Program of China [2012AA051003]
- NSFC [21376135, 51236004]
Ask authors/readers for more resources
Conversion of methanol to aromatics (MTA) was conducted over a fresh or a spent Zn/ZSM-5 catalyst in single stage fluidized bed (SSFB) and two stage fluidized bed (TSFB). Sampling at different stages of TSFB and operation in the temperature range of 250, 275, 300, 325, 350, 380 and 475 degrees C revealed the consecutive reaction mode from methanol to DME, C-1-C-4 hydrocarbons, C5+ nonaromatics to aromatics finally. High weight ratio of para-xylene (PX) in xylene in wide temperature range suggested that PX was the primary product of MTA, and other xylenes are produced by the iosmerization of PX. Other aromatics such as benzene, toluene and trimethylbenzene are finally produced by the dealkylation, alkylation or disproportionation of xylene. The adoption of TSFB reactor was effective to increase the yield of aromatics, compared to that using SSFB, due to the inhibition of backmixing of gases. Combination of TSFB and highly active catalyst with strong acids was effective to get high yield of aromatics under high space velocity of methanol. (C) 2014 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available