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- Title
Mechanistic insights into methanol-to-olefin reaction on an α-Mn<sub>2</sub>O<sub>3</sub> nanocrystal catalyst.
- Authors
Xu, Jing; Ouyang, Like; Luo, Yan; Xu, Xi-Meng; Yang, Zhen; Zhang, Chengxi; Gong, Jinlong; Han, Yi-Fan
- Abstract
The synthesis and utilization of an α-Mn2O3 nanocrystal catalyst for methanol-to-olefin reaction is described. A methanol conversion of 35% and a maximum selectivity of 80% toward ethylene were obtained at 250°C. In particular, formaldehyde, a primary intermediate for the reaction, was used to produce ethylene via a coupling reaction. A conversion of 45% and a selectivity of 66% to ethylene were achieved at 150°C in a formaldehyde stream. In situ diffuse reflectance infrared Fourier transform spectra reveal the formation of the surface CH2-containing species during reaction, which implies that the main pathway for formaldehyde coupling is probably through interactions of those intermediates. In addition, the weakly adsorbed oxygen on the α-Mn2O3 nanocrystal surface was found to play an important role in this reaction. © 2012 American Institute of Chemical Engineers AIChE J, 2012
- Subjects
METHANOL; CHEMICAL reactions; ALKENES; MANGANESE oxides; NANOCRYSTALS; CATALYSTS; ETHYLENE industry; FORMALDEHYDE
- Publication
AIChE Journal, 2012, Vol 58, Issue 11, p3474
- ISSN
0001-1541
- Publication type
Article
- DOI
10.1002/aic.13725