Experimental analysis of direct thermal methane cracking

Experimental investigation and thermo-chemical modeling of methane pyrolysis in a liquid metal bubble column reactor with a packed bed

“…Nevertheless, all catalysts suffer from deactivation [19e21], due to carbon deposition on the active sites or even mechanical abrasion of the catalyst [22]. Besides the deactivation of catalysts, the formation of solid carbon during the decomposition reaction, could result in reactor clogging [23,24]. An approach for the continuous decomposition of hydrocarbons avoiding these limitations is the utilization of liquid metals as a heat transfer fluid in a bubble column reactor.…”

Methane decomposition for carbon nanotube production: Optimization of the reaction parameters using response surface methodology

“…The carbon deposition persisted for up to ~30000 seconds (~8.5 hours) showing a superior catalyst activity, when compared to other studies (Abánades et al, 2011). However, the methane conversion decreases with the residence time as a consequence of carbon deposition, referred to as "cake formation".…”

“…However, the methane conversion decreases with the residence time as a consequence of carbon deposition, referred to as "cake formation". The formation of carbon plug reduces the accessibility and activity of the catalysts and therefore, regeneration of the catalysts is required for further catalytic activity (Abánades et al, 2011).…”

Natural Gas Decarbonization as Tool for Greenhouse Gases Emission Control

“…Direct thermal cracking can develop methane decomposition at relatively high temperatures (above 1,000 • C) with reasonable conversion rates, thereby providing suitable methane residence times into the reactor (Abánades et al, 2011) or very high temperatures (more than 1,500 • C, when reaction kinetics are very fast). There were even some proposals of a pilot-plant design for direct methane decomposition (Rodat et al, 2011).…”