Qing Wen, Jun Shen, Rafal Gieleciak, Kirk H. Michaelian, Jurandir H. Rohling, Nelson G. C. Astrath e Mauro L. Baesso

International Journal of Thermophysics – Volume: 35; Issue: 5; Pages: 930-941; DOI: 10.1007/s10765-014-1604-6

Temperature coefficients of the refractive index (dn/dT) in the 25∘C to 35∘C temperature interval for hydrocarbon mixtures containing as many as 14 compounds were investigated in this work. The measured −dn/dT of the mixtures were compared with calculations based on the values for each compound and their concentrations. Differences of about 1 % between measured and calculated values were observed for all mixtures. The additivity of −dn/dT for these hydrocarbons enables preparation of surrogate fuels that are formulated to have properties like those of specific diesel fuels.