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Mechanistic insights into methanol-to-olefin reaction on an α-Mn2O3 nanocrystal catalyst.
- Source :
- AIChE Journal; Nov2012, Vol. 58 Issue 11, p3474-3481, 8p
- Publication Year :
- 2012
-
Abstract
- The synthesis and utilization of an α-Mn<subscript>2</subscript>O<subscript>3</subscript> 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<superscript>°</superscript>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<superscript>°</superscript>C in a formaldehyde stream. In situ diffuse reflectance infrared Fourier transform spectra reveal the formation of the surface CH<subscript>2</subscript>-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-Mn<subscript>2</subscript>O<subscript>3</subscript> nanocrystal surface was found to play an important role in this reaction. © 2012 American Institute of Chemical Engineers AIChE J, 2012 [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00011541
- Volume :
- 58
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- AIChE Journal
- Publication Type :
- Academic Journal
- Accession number :
- 82211543
- Full Text :
- https://doi.org/10.1002/aic.13725