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Partial oxidation of ethanol to acetaldehyde over surface-modified single-walled carbon nanotubes

Paper ID Volume ID Publish Year Pages File Format Full-Text
40146 45845 2014 10 PDF Available
Title
Partial oxidation of ethanol to acetaldehyde over surface-modified single-walled carbon nanotubes
Abstract

•Surface-modified SWCNTs were used as catalysts for partial oxidation of ethanol.•Functional groups were introduced on the SWCNTs by pretreatment in O2/He.•SWCNTs catalyst showed high catalytic activity and selectivity to acetaldehyde.•Catalytic activity was strongly influenced by SWCNTs pretreatment temperature.•Ketonic functionalities (CO) are the species that regulate catalytic activity.

The catalytic activity of surface-modified single-walled carbon nanotubes (SWCNTs) for partial oxidation processes was tested. A battery of characterization techniques including temperature programmed desorption (TPD) Fourier transform infrared (FTIR), and X-ray photoelectron spectroscopy (XPS) were used to probe the degree and type of oxygen bearing functional groups introduced on the nanotube surface and responsible for catalytic activity. Raman and optical absorption spectroscopy and temperature programmed oxidation (TPO), were used to probe the SWCNTs structure before and after reaction to monitor structural changes that take place during partial oxidation of ethanol to acetaldehyde. The results indicate a strong link between ketonic surface groups (CO) on the SWCNTs surface and its catalytic activity for partial oxidation processes.

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Keywords
Ethanol; Partial oxidation; SWCNT; Optical absorption; FTIR; Raman; TPO; TPD; XPS.
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Partial oxidation of ethanol to acetaldehyde over surface-modified single-walled carbon nanotubes
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 469, 17 January 2014, Pages 8–17
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
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Price after discount Only $4.95
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Full-text PDF Download
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