Abstract
Two major green house gases (CO2 and CH4) can be converted into useful synthetic gas (H2 and CO) during dry reforming of methane (DRM) reaction, and a lot of scientific efforts has been made to develop efficient catalysts for dry reforming of methane (DRM). Noble metal-based catalysts can effectively assist DRM reaction, however they are not economically viable. Alternatively, non-noble based catalysts have been studied so far, and supported Ni catalysts have been considered as a promising candidate for DRM catalyst. Main drawback of Ni catalysts is its catalytic instability under operating conditions of DRM (>700 °C). Recently, it has been demonstrated that the appropriate choice of metal-oxide supports can address this issue since the chemical and physical of metal-oxide supports can prevent coke formation and stabilize the small Ni nanoparticles under harsh conditions of DRM operation. This mini-review covers the recent scientific findings on the development of supported Ni catalysts for DRM reaction, including the synthetic methods of supported Ni nanoparticles with high sintering resistance.
Highlights
Human have largely relied on fossil fuels as an energy source for the last centuries and a large amount of CO2 gas has been emitted into atmosphere by burning fossil fuels
CO2 can be considered as a possible carbon source in chemical industry and CO2 reforming of methane (CH4 ), which is often referred as dry reforming of methane (DRM), has been attracted much attention [8,9,10,11,12,13]
The DRM reaction over supported Ni catalyst mainly proceed via two steps: (1) decomposition of methane; and, (2) CO2 dissociation
Summary
Human have largely relied on fossil fuels as an energy source for the last centuries and a large amount of CO2 gas has been emitted into atmosphere by burning fossil fuels. It has been proved that an addition of small amount of noble metals into transition metal-based catalysts resulted in enhanced catalytic performances [9,16,17,18,19,20,21,22]. Small Ni nanoparticles (
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