Shock Tube Measurements of Ignition Delay Times for the Butanol Isomers Using the Constrained-Reaction-Volume Strategy

• Published in: International journal of chemical kinetics Vol. 46; no. 8; pp. 433 - 442
• Main Authors: BEC, I. L. R., ZHU, Y., DAVIDSON, D. F., HANSON, R. K.
• Format: Journal Article
• Language: English; French; German
• Published: Hoboken Blackwell Publishing Ltd 01.08.2014; Wiley Subscription Services, Inc
• ISSN: 0538-8066; 1097-4601
• DOI: 10.1002/kin.20859

ABSTRACT Ignition delay times of sec‐, iso‐, and tert‐butanol were measured behind reflected shock waves using both conventional operation and a new constrained‐reaction‐volume (CRV) strategy. This CRV filling method constrains the volume of reactive gases, thereby producing near‐constant‐pressure test conditions for reflected shock measurements. The initial reflected shock conditions cover temperatures ranging from 828 to 1095 K, pressures near 20 atm and an equivalence ratio of 1.0 in air mixtures. Additional data were also collected at 30 atm and at φ = 0.5 for iso‐butanol/O2/N2 mixtures. At 20 atm and φ = 1.0, the ignition delay time increases for the isomers in the following order: n‐butanol, iso‐butanol and sec‐butanol, and tert‐butanol. Modeling of all collected data using the Vasu and Sarathy (Energy Fuel 2013, 27, 7072–7080) mechanism showed overall good agreement with the experimental data.