Acetylene pyrolysis product distribution

Product Distribution in the Rapid Pyrolysis of Biomass/Lignin for Production of Acetylene... 

Novel industrial applications may evolve from continuous wave (CW) CO 2 laser-driven homogeneous pyrolysis of hydrocarbons (e.g. C4Hlo n-heptane % which seems to be advantageous over conventional pyrolysis methods For example, the CW CO2 laser SF -sensitized decomposition of cyclohexane in the gas phase yields mainly ethene and 1,3-butadiene (equation 7). The product distribution is almost invariable with the extent of conversion and different from conventional pyrolysis No acetylene is formed... 

The thermal decomposition of propylene involves a series of primary and secondary reactions leading to a complex mixture of products. Studies showed that the distribution of pyrolysis products varies considerably with the pyrolysis conditions and the type of reactor used. There is agreement among the studies on propylene pyrolysis that the three major products of pyrolysis are methane, ethylene, and hydrogen. However, there is disagreement on the types and amounts of minor or secondary product species. Ethane, butenes, acetylene, methylacetylene, allene, and heavier aromatic components are reported in different studies, Laidler and Wojciechowski (1960), Kallend, et al. (1967), Amano and Uchiyama (1963), Sakakibara (1964), Sims, et al. (1971), Kunugi, et al. (1970), Mellouttee, et al. (1969), conducted at different conversion and temperature levels. Carbon was also reported as a product in the early work of Hurd and Eilers (1943) and in the more recent work of Sims, et al. (1971). 

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