High temperature pyrolysis of C1 to C4 hydrocarbons

Abstract

The pyrolysis of nine hydrocarbons at 1200°has been studied. The main products, which were the same for all hydrocarbons studied, were 1,3-cyclopentadiene, benzene, toluene, phenylacetylene, styrene, indene, and naphthalene. Twenty-three minor products were identified. The distribution of products can be accounted for in terms of polymerization of acetylene, produced by the pyrolysis of the hydrocarbon, and the addition of CH2 or CH3 to some of the acetylene polymers.

The Pyrolysis of Cumene, p-Cymene, and α-Methylstyrene at 800 °C

“…However, the amount is not substantial enough to support a methyl rearrangement mechanism. The magnitude of the yields of toluene and p-xylene observed in this work is generally found in the high-temperature pyrolysis of most organic materials (6)(7)(8).…”

Direct Aromaization of Methane

“…Thermal activation leading to acetylene has been practiced commercially for decades (VViessermel, 1978). This reaction occurs at about 14OO0C, and reports exist of reaction at lower temperatures leading to aromatics (Sanchez, 1966;Friedman, 1970 (Deryaguin and Fedoseev, 1973;Murata, 1989).…”

What was the role of submarine hot springs in the origin of life?

“…In addition, making polymers is not equivalent to synthesizing a living organism. Pyrolysis reactions played a role in the prebiotie synthesis of aromatic hydrocarbons (Friedmann et al, 1970), phenylalanine, tyrosine (Friedmann and Miller, 1969) and tryptophan (Friedmann et al, 1971). However, these pyrolysis reactions are at higher temperatures (800-1200 * C) in the gas phase and involve the rapid quenching of the reaction (Miller et al, 1976).…”