ABSTRACT
In fact, considerable attention has been focused on the gasification of carbon deposition on catalysts by hydrocarbon decomposition to obtain more applicable production and regenerate the deactivated catalysts [5]. It is confirmed that deposited carbons could be gasified with steam or CO2 to syngas or CO [5-9]. Syngas is a important raw material for the process of gas-to-liquids (GTL) such as Fischer-Tropsch synthesis [10, 11], and CO is an indispensable chemical used
in carbonylations of methanol and acetylene, hydroformylation of alkenes, synthesis of phosgene or formation of metal carbonyls [5] [8]. Unfortunately, the carbon deposition on catalyst cannot be completely removed by steam or CO2 [5, 6] [9], and the carbon removal rate is very slow [9]. As a result, a gradual decrease in catalytic activity for methane decomposition was observed during the successive cycles [5, 6] [9-13]. Consequently, exploration of other novel alternative carbon removal routes is necessary [14, 15].
