(5) For the second set of the testing samples, when the volume percentage concentration of methane reaches 10%, the practical concentrations of butane, ethylene, propylene, ethyne, carbon monoxide, and carbon dioxide are 0.

Mthunzi, "Synthesis of carbon nanotubes by catalytic decomposition of ethyne using Co-Zn-Al catalyst," International Journal of Nanotechnology and Applications, vol.

In this study, iron-nickel catalyst on aluminium oxide support, have been prepared as [3,17] catalysts for the synthesis of Multi-Walled carbon nanotubes (MWCNT) with ethyne (acetylene) as carbon source.

A mixture of inert gas, such as argon or krypton, and a reactive gas, such as methane, ethane, or ethyne with a hydrogen-nitrogen mixture, is used in the sputtering process.