Cyclic Oxygenates: A New Class of Second-Generation Biofuels for Diesel Engines?†

Boot, M; Frijters, P; Luijten, C; Somers, B; Baert, R; Donkerbroek, A; Klein-Douwel, RJH; Dam, N

HERO ID

404898

Reference Type

Journal Article

Year

2008

HERO ID 404898
In Press No
Year 2008
Title Cyclic Oxygenates: A New Class of Second-Generation Biofuels for Diesel Engines?†
Authors Boot, M; Frijters, P; Luijten, C; Somers, B; Baert, R; Donkerbroek, A; Klein-Douwel, RJH; Dam, N
Journal Energy and Fuels
Volume 23
Issue 4
Page Numbers 1808-1817
Abstract Combustion behavior of various oxygenated fuels has been studied in a DAF heavy-duty (HD) direct-injection (DI) diesel engine. From these fuels, it is well-known that they lead to lower particle (PM) emissions; however, for a given fuel oxygen mass fraction, there are significant differences in PM reduction. Although this can be traced back to the specific molecular structure of the oxygenate in question, no consensus can be found in the literature as to the explanation hereof. In this study, the sooting tendency (smoke number) of three oxygenates [viz., tripropylene glycol methyl ether (TP), dibutyl maleate (DB), and cyclohexanone (X1)] was compared to that of commercial diesel fuel (EN590, D). The results suggest that the cetane number (CN) (i.e., fuel reactivity) may play an important role. More specifically, the low reactive oxygenate X1, with its cyclic carbon chain, was found to perform exceptionally well compared to the more reactive linear and branched oxygenates DB and TP, respectively. Cyclic oxygenates are abundant in nature. Cellulose, the most common organic compound on earth, is the best-known example. Although it is not trivial, liquid cyclic oxygenates can be made from lignocellulosic biomass. Particularly, the production of C6 oxygenates (e.g., guaiacol, cyclohexanone, phenol, etc.), which can be derived from lignin, is the subject of current investigation. Fuels produced from such biomass (e.g., plant waste or the nonedible part of plants) are referred to as second-generation biofuels and are expected to play a pivotal role in the near future.
Doi 10.1021/ef8003637
Wosid WOS:000265439000090
Is Certified Translation No
Dupe Override No
Is Public Yes
Keyword Fuel technology; Fuels; Emissions; biofuels; Biomass; Diesel engines; Phenols; Combustion; 2008)
Is Qa No