Study of stability of Ni/MgO/γ-Al2O3 catalyst prepared by plasma for CO2 reforming of CH4

Methane dry reforming on Ni/La2Zr2O7 treated by plasma in different atmospheres

“…They concluded that treating the catalysts with low temperature non-thermal plasma can prevent the growth of Ni crystals effectively during the reduction process. In addition, the interaction between MgO and Ni can be enhanced, which improves the basicity of the catalysts, thus mitigating the decomposition of CH 4 and improving the activation of CO 2 [17,18].…”

“…Our group has formerly studied Sn and Co modified Ni/Al 2 O 3 catalysts for methane reforming and found that both can promote the interaction between Ni and was ascribed to the formation of smaller Ni particles and more basic sites but with weaker basicity. Both Estifaee and Xu's groups [17,18] investigated the effect of plasma on the structure, reactivity and stability of the Ni/MgO/γ -Al 2 O 3 catalysts, which also has an evident impact on the activity and coke resistance for methane dry reforming over the catalysts. They concluded that treating the catalysts with low temperature non-thermal plasma can prevent the growth of Ni crystals effectively during the reduction process.…”

Sustainable technologies for the reclamation of greenhouse gas CO2

“…Ni/MgO/g-Al 2 O 3 was prepared by atmospheric pressure cold plasma (Xu et al, 2013). The plasma reduction endued the catalyst with smaller primal Ni crystals by its atomic hydrogen effect at the relatively low temperature and short time, which can prevent the growth of Ni crystals during the reduction process; MgO promoter made for "freezing" Ni crystals by the interaction between MgO and Ni, and this interaction can not only suppress the agglomeration of Ni crystals during the reaction process, but mitigate the decomposition of CH 4 and improve the activation of CO 2 .…”

Development of Ni-Based Catalysts Derived from Hydrotalcite-Like Compounds Precursors for Synthesis Gas Production via Methane or Ethanol Reforming

“…To successfully prepare Ni-based catalysts from HTLc precursors and to achieve the optimal catalytic performances, as the active metallic component, the content of Ni in The schematic of catalyst reduction process by atmospheric cold plasma jet. Reproduced from [68] with permission of Elsevier. Copyright 2013.…”

“…Similar results were also achieved for Zhang et al [24], who prepared Ni/Co catalyst derived from HTLc precursors with decomposition and reduction process performed by H2/Ar atmospheric plasma jet. Xu et al [68] prepared Ni(NO3)2/MgO/γ-Al2O3 precursor by impregnation method and the precursor was then treated via two ways for the subsequent calcination and reduction processes: one was decomposition and reduction by direct atmospheric cold plasma jet (as shown in Figure 3) and the other was calcination at 550 °C for 4 h and reduction at 750 °C for 2 h as the conventional method. With the aid of the mixed beneficial effects of plasma reduction and MgO addition, the catalyst treated by cold plasma jet presented better catalytic performance in methane reforming of carbon dioxide.…”