Pyrolysis of ethyl esters in a micro-reactor

Ellison, Barney

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https://hdl.handle.net/2142/104406 Copy

Description

Title

Pyrolysis of ethyl esters in a micro-reactor

Author(s)

Ellison, Barney

Contributor(s)

• Labbe, Nicole
• Daily, John W.
• Porterfield, Jessie P.
• Rogers, Cory

Issue Date

2019-06-18

Keyword(s)

Dynamics and kinetics

Abstract

The nascent steps in the pyrolysis of ethyl esters have been studied in a set of heated micro-reactors. We have examined the thermal decomposition of ethyl propionate, \ce{CH3CH2COOCH2CH3}, a model for biofuels. The micro-reactors are small (roughly 1\,mm ID x 3\,cm long) silicon carbide tubes; transit times through the reactors are about 100\,$\mu$sec. Temperatures in the micro-reactors can be as high as 1700\,K and pressures are typically 100\,Torr. The products of pyrolysis are identified by a combination of 118.2\,nm photoionization mass spectrometry and matrix isolation infrared absorption spectroscopy. We find there are two major pathways for ethyl propionate decomposition. These are: \ce{CH3CH2COOCH2CH3 -> CH3CH2COOH + CH2=CH2} and \ce{CH3CH2COOCH2CH3 -> CH3CH=C=O + CH3CH2OH}. The nascent pyrolysis products undergo further, extensive fragmentation in the reactor.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Permalink

http://hdl.handle.net/2142/104406

DOI

https://doi.org/10.15278/isms.2019.TF07

Copyright and License Information

Copyright 2019 Barney Ellison

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