There has been great interest in recent years in highly efficient
utilization of natural gas (mainly methane) and in the reduction
of carbon dioxide in the atmosphere in view of environmental
protection as well as potential industrial applications.1−6
Herein, the catalytic process of CO2 reforming of methane
(CRM) provides one of the attractive and promising routes for
the effective use of CH4 and CO2 resources, which consumes
two greenhouse gases simultaneously to produce valuable
synthesis gas.1,2,6 The product mixture of this reaction has a
relatively lower H2/CO ratio (1/1) than those of steam
reforming (3/1) and partial oxidation (2/1) of methane, which
is more desirable for direct use as feedstock for oxo synthesis,
synthesis of oxygenates, etc.7−9 Furthermore, considering its
strong endothermic feature, this reforming process can also be
applied in chemical energy transmission systems to convert
inexpensive nuclear and solar energies into valuable chemical
energy.10,11 However, so far, no industrial practice has been
established for this catalytic reaction system, mainly due to the
absence of an effective and economic catalyst. Therefore,
developing efficient and economical catalysts remains a
challenging task encountered in current research.2