Measurement of pressure effects of n-hexadecane cracking rates
Experiments designed to determine the possible role of pressure in governing the kinetics of n-hexadecane (n-C{sub l6}) cracking reactions were conducted in Dickson-type autoclaves at temperatures from 300 to 370C at pressures from 150 to 600 bars. Good agreement with published reaction kinetics was obtained at temperatures {le}350C. Values determined at lower temperatures indicate slower rates than predicted from earlier experiments and show a distinct induction period at 300C. Activation energy determined for this reaction is about 60 kcal/mole at T > 330C, but it may exceed 70 kcal/mole at lower temperatures. Product hydrocarbon compounds lighter than n-C{sub 16} seem to follow the single, first order reaction kinetics shown by the disappearance of n-C{sub 16}. Hydrocarbons larger than n-C{sub l6,} however, seem to follow a serial reaction of generation and subsequent destruction (including conversion to solid products) at high percentage conversion. Limited data suggest that the cracking rate of n-C{sub 16} may have a small dependence on pressure.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 10142905
- Report Number(s):
- UCRL-JC-110681; CONF-920815-19; ON: DE93009229
- Resource Relation:
- Conference: 204. American Chemical Society (ACS) national meeting,Washington, DC (United States),23-28 Aug 1992; Other Information: PBD: Jun 1992
- Country of Publication:
- United States
- Language:
- English
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