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Nafion-Incorporated Silicate Structured Nanocomposite Mesoporous Catalysts for Dimethyl Ether Synthesis
Date
2010-08-04
Author
Ciftci, Aysegul
Sezgi, Naime Aslı
Doğu, Timur
Metadata
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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Being chemically and thermally stable, Nation resin is considered to be an attractive solid acid catalyst. Although it has high acid strength and the ability to catalyze a wide range of reactions, the catalytic activity of Nation is limited, because of its very low specific surface area. In this study, mesoporous Nafion-silica nanocomposites were developed by following a one-pot acidic hydrothermal synthesis procedure. Synthesized catalysts were determined to have well-dispersed structures with high surface area values (595-792 m(2)/g) and strong Bronsted, as well as Lewis, acid sites. The activities of these novel catalysts were tested in dimethyl ether synthesis from methanol in a flow system. The effects of modifications in the synthesis procedure and Nafion loading showed that the material synthesized from a solution containing a Nafion/silica weight ratio of 0.15 and refluxed with a 2 M sulfuric acid-ethanol (SAE) mixture for surfactant removal was the best catalyst for this reaction. Production of the green transportation fuel alternate dimethyl ether (DME) was achieved with this catalyst at very high yields with almost 100% DME selectivity at >180 degrees C.
Subject Keywords
Solid Acid Catalysis
,
Molecular-Sieves
,
Dehydration
,
Methanol
,
Dme
,
Ethylene
,
Ethanol
URI
https://hdl.handle.net/11511/32644
Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
DOI
https://doi.org/10.1021/ie9015667
Collections
Graduate School of Natural and Applied Sciences, Article
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A. Ciftci, N. A. Sezgi, and T. Doğu, “Nafion-Incorporated Silicate Structured Nanocomposite Mesoporous Catalysts for Dimethyl Ether Synthesis,”
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
, pp. 6753–6762, 2010, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32644.