A Single Pulse Shock Tube Study of Soot Formation from Benzene Pyrolysis,
KANSAS STATE UNIV MANHATTAN
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Vapor phase benzene diluted in argon has been pyrolyzed in a single pulse shock tube fitted with an in-line, fullport ball valve to facilitate post shock gas sampling. The disappearance of benzene has been shown to be second order with respect to benzene concentration. Product analyses have shown the major products to be acetylene and styrene with trace amounts of diacetylene, methane, vinylacetylene and toluene also detected. Gravimetric analysis of the solid residue has been achieved using a removable liner in the end section of the shock tube. Recovery of solid and gas species was found to be 85-95 of the original reactant mass with increasing temperature until c. 1900 K at which time the fractional soot yields remain constant at 0.8 to 2700 K.