Methane Pyrolysis Stimulated by Admixture of Atomic Hydrogen: 1. An Experimental Study

Methane Pyrolysis Stimulated by Admixture of Atomic Hydrogen: 2. Mechanism Analysis and Kinetics Calculation

“…(1) Numerical simulation of the reaction kinetics demonstrated that thermal pyrolysis at low temperatures (1800 K or lower) follows the radical chain mechanism with short chains (a chain length of 2-3) and, consequently, the admixture of atomic hydrogen significantly increases the rate of the process, as observed experimentally [1].…”

“…The chain length of the methane degradation process (reactions (7)-(9)) can be calculated by the equation This quantity is equal to 1.5-2. The rate of methane conversion through this chain is comparable with the rate of methane thermal decomposition in reaction (1).…”

“…To draw conclusions concerning the kinetics and mechanism of methane conversion, let us analyze the product composition in the first two sets of experiments [1] with a relatively high energy input of 3-4 eV per methane molecule. We use the following method of analysis [2]: plotting the fractions of individual complex hydrocarbons (ethane, ethylene, and acetylene) as functions of conversion.…”

“…An experimental study of this process was reported in [1]. In this work, we analyzed the experimental results in order to determine the reaction mechanism and theoretically calculated the kinetics of methane pyrolysis stimulated by the addition of radicals.…”

“…The experimental apparatus and procedure was described in detail previously [1]. In the test process, radicals acted as both a heat-transfer agent and a reactant.…”