Introduction
The synthesis gas (syngas), a mixture of H2 and CO, is an
important raw material in the chemical industry and can be
manufactured from natural gas, coal, petroleum, biomass and
even from organic wastes [1]. Various H2/CO ratios of syngas
are required to synthesize different products, such as
ammonia, methanol, acetic acid, ethylene glycol and diesel
[2]. As a result of the lowest cost of the route to syngas and the
emphasis on the environmental situation [3,4], CO2 reforming
of CH4 has been considered to be a forward-looking method
during the past decade.
CH4 þ CO2/2CO þ 2H2 DH ¼ 247kJ=mol
However, on account of the chemical inertia of CO2 and CH4,
it is difficult to activate them to react effectively. In recent
IntroductionThe synthesis gas (syngas), a mixture of H2 and CO, is animportant raw material in the chemical industry and can bemanufactured from natural gas, coal, petroleum, biomass andeven from organic wastes [1]. Various H2/CO ratios of syngasare required to synthesize different products, such asammonia, methanol, acetic acid, ethylene glycol and diesel[2]. As a result of the lowest cost of the route to syngas and theemphasis on the environmental situation [3,4], CO2 reformingof CH4 has been considered to be a forward-looking methodduring the past decade.CH4 þ CO2/2CO þ 2H2 DH ¼ 247kJ=molHowever, on account of the chemical inertia of CO2 and CH4,it is difficult to activate them to react effectively. In recent
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