Accession Number:

AD0844671

Title:

Vaporizing and Endothermic Fuels for Advanced Engine Application. Part 2. Studies of Thermal and Catalytic Reactions, Thermal Stabilities, and Combustion Properties of Hydrocarbon Fuels

Descriptive Note:

Technical rept. Jun 1967-Jun 1968

Corporate Author:

SHELL DEVELOPMENT CO EMERYVILLE CA

Report Date:

1968-09-01

Pagination or Media Count:

362.0

Abstract:

Investigation of the feasibility of using endothermic reactions of hydrocarbons to augment the latent and sensible heat of fuels for cooling engines operating under a high mach number regime is continuing. The dehydrogenation of Decalin over a platinumAl2O3 catalyst has been studied extensively on a laboratory scale covering the temperature region up to 1200F and pressures to 10 atms, in order to provide kinetic data for the construction of a mathematical model. Production of catalysts have turned up a number of the 536 catalysts examined that are more active than the standard PtAl2O3 catalyst, but no breakthrough in either activity or cost has been achieved. Further testing has shown that catalysts which demonstrate improved activity with MCH do the same with Decalin and has confirmed the observation that improved catalyst stability is associated with small pore size. Heat transfer studies in a simulated single tube fuel system have confirmed the mathematical model for the catalytic dehydrogenation of MCH up to a heat flux of 600,000 Btuhrsq ft. The thermodynamic and transport properties of trans-Decalin, Shelldyne and JP-7 and a bibliography of recent literature of interest are included.

Subject Categories:

  • Organic Chemistry
  • Combustion and Ignition
  • Fuels

Distribution Statement:

APPROVED FOR PUBLIC RELEASE