TY - JOUR
T1 - Characterization of deposits formed on diesel injectors in field test and from thermal oxidative degradation of n-hexadecane in a laboratory reactor
AU - Venkataraman, Ramya
AU - Eser, Semih
N1 - Funding Information:
This work was part of the study on the 'Characterization of Deposits formed from the Pyrolytic and Oxidative Degradation of Jet Fuel and Diesel'. The authors are grateful to the contributions of the following people: Prof. L. Radovic, Dr. S. Pisupati and Prof. B. Santoro for their feedback and comments on the study; Josh Maeir and Dr. T. Clark at the Materials Research Institute at Penn State University for carrying out the HRTEM analysis of the samples; Arun Ram Mohan at The Energy Institute at Penn State University for providing MOCVD coated specimens for the study on jet fuel; Nicole Wonderling at the Materials Research Institute at Penn State for carrying out XRD analysis of samples from jet fuel; Rolls-Royce Corp. Indianapolis for funding Ramya Venkataraman's Ph. D. study.
PY - 2008
Y1 - 2008
N2 - Solid deposits from commercially available high-pressure diesel injectors (HPDI) were analyzed to study the solid deposition from diesel fuel during engine operation. The structural and chemical properties of injector deposits were compared to those formed from the thermal oxidative stressing of a diesel fuel range model compound, n-hexadecane at 160°C and 450 psi for 2.5 h in a flow reactor. Both deposits consist of polyaromatic compounds (PAH) with oxygen moieties. The similarities in structure and composition of the injector deposits and n-hexadecane deposits suggest that laboratory experiments can simulate thermal oxidative degradation of diesel in commercial injectors. The formation of PAH from n-hexadecane showed that aromatization of straight chain alkanes and polycondensation of aromatic rings was possible at temperatures as low as 160°C in the presence of oxygen. A mechanism for an oxygen-assisted aromatization of cylcoalkanes is proposed.
AB - Solid deposits from commercially available high-pressure diesel injectors (HPDI) were analyzed to study the solid deposition from diesel fuel during engine operation. The structural and chemical properties of injector deposits were compared to those formed from the thermal oxidative stressing of a diesel fuel range model compound, n-hexadecane at 160°C and 450 psi for 2.5 h in a flow reactor. Both deposits consist of polyaromatic compounds (PAH) with oxygen moieties. The similarities in structure and composition of the injector deposits and n-hexadecane deposits suggest that laboratory experiments can simulate thermal oxidative degradation of diesel in commercial injectors. The formation of PAH from n-hexadecane showed that aromatization of straight chain alkanes and polycondensation of aromatic rings was possible at temperatures as low as 160°C in the presence of oxygen. A mechanism for an oxygen-assisted aromatization of cylcoalkanes is proposed.
UR - https://www.scopus.com/pages/publications/65349175825
UR - https://www.scopus.com/pages/publications/65349175825#tab=citedBy
U2 - 10.1186/1752-153X-2-25
DO - 10.1186/1752-153X-2-25
M3 - Article
C2 - 19091086
AN - SCOPUS:65349175825
SN - 1752-153X
VL - 2
JO - Chemistry Central Journal
JF - Chemistry Central Journal
IS - 1
M1 - 25
ER -