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Title: Measuring the effectiveness of high-performance Co-Optima biofuels on suppressing soot formation at high temperature

Abstract

Soot emissions in combustion are unwanted consequences of burning hydrocarbon fuels. The presence of soot during and following combustion processes is an indication of incomplete combustion and has several negative consequences including the emission of harmful particulates and increased operational costs. Efforts have been made to reduce soot production in combustion engines through utilizing oxygenated biofuels in lieu of traditional nonoxygenated feedstocks. The ongoing Co-Optimization of Fuels and Engines (Co-Optima) initiative from the US Department of Energy (DOE) is focused on accelerating the introduction of affordable, scalable, and sustainable biofuels and high-efficiency, low-emission vehicle engines. The Co-Optima program has identified a handful of biofuel compounds from a list of thousands of potential candidates. In this study, a shock tube was used to evaluate the performance of soot reduction of five high-performance biofuels downselected by the Co-Optima program. Current experiments were performed at test conditions between 1,700 and 2,100 K and 4 and 4.7 atm using shock tube and ultrafast, time-resolve laser absorption diagnostic techniques. The combination of shock heating and nonintrusive laser detection provides a state-of-the-art test platform for high-temperature soot formation under engine conditions. Soot reduction was found in ethanol, cyclopentanone, and methyl acetate; conversely, an α-diisobutylene and methylmore » furan produced more soot compared to the baseline over longer test times. For each biofuel, several reaction pathways that lead towards soot production were identified. The data collected in these experiments are valuable information for the future of renewable biofuel development and their applicability in engines.« less

Authors:
; ; ; ; ; ; ; ORCiD logo
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1597120
Grant/Contract Number:  
EE0007984; EE0007982
Resource Type:
Published Article
Journal Name:
Proceedings of the National Academy of Sciences of the United States of America
Additional Journal Information:
Journal Name: Proceedings of the National Academy of Sciences of the United States of America; Journal ID: ISSN 0027-8424
Publisher:
Proceedings of the National Academy of Sciences
Country of Publication:
United States
Language:
English

Citation Formats

Barak, Samuel, Rahman, Ramees K., Neupane, Sneha, Ninnemann, Erik, Arafin, Farhan, Laich, Andrew, Terracciano, Anthony C., and Vasu, Subith S. Measuring the effectiveness of high-performance Co-Optima biofuels on suppressing soot formation at high temperature. United States: N. p., 2020. Web. doi:10.1073/pnas.1920223117.
Barak, Samuel, Rahman, Ramees K., Neupane, Sneha, Ninnemann, Erik, Arafin, Farhan, Laich, Andrew, Terracciano, Anthony C., & Vasu, Subith S. Measuring the effectiveness of high-performance Co-Optima biofuels on suppressing soot formation at high temperature. United States. doi:10.1073/pnas.1920223117.
Barak, Samuel, Rahman, Ramees K., Neupane, Sneha, Ninnemann, Erik, Arafin, Farhan, Laich, Andrew, Terracciano, Anthony C., and Vasu, Subith S. Mon . "Measuring the effectiveness of high-performance Co-Optima biofuels on suppressing soot formation at high temperature". United States. doi:10.1073/pnas.1920223117.
@article{osti_1597120,
title = {Measuring the effectiveness of high-performance Co-Optima biofuels on suppressing soot formation at high temperature},
author = {Barak, Samuel and Rahman, Ramees K. and Neupane, Sneha and Ninnemann, Erik and Arafin, Farhan and Laich, Andrew and Terracciano, Anthony C. and Vasu, Subith S.},
abstractNote = {Soot emissions in combustion are unwanted consequences of burning hydrocarbon fuels. The presence of soot during and following combustion processes is an indication of incomplete combustion and has several negative consequences including the emission of harmful particulates and increased operational costs. Efforts have been made to reduce soot production in combustion engines through utilizing oxygenated biofuels in lieu of traditional nonoxygenated feedstocks. The ongoing Co-Optimization of Fuels and Engines (Co-Optima) initiative from the US Department of Energy (DOE) is focused on accelerating the introduction of affordable, scalable, and sustainable biofuels and high-efficiency, low-emission vehicle engines. The Co-Optima program has identified a handful of biofuel compounds from a list of thousands of potential candidates. In this study, a shock tube was used to evaluate the performance of soot reduction of five high-performance biofuels downselected by the Co-Optima program. Current experiments were performed at test conditions between 1,700 and 2,100 K and 4 and 4.7 atm using shock tube and ultrafast, time-resolve laser absorption diagnostic techniques. The combination of shock heating and nonintrusive laser detection provides a state-of-the-art test platform for high-temperature soot formation under engine conditions. Soot reduction was found in ethanol, cyclopentanone, and methyl acetate; conversely, an α-diisobutylene and methyl furan produced more soot compared to the baseline over longer test times. For each biofuel, several reaction pathways that lead towards soot production were identified. The data collected in these experiments are valuable information for the future of renewable biofuel development and their applicability in engines.},
doi = {10.1073/pnas.1920223117},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {2}
}

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