Recent Progress on Ni-Based Catalysts in Partial Oxidation of Methane to Syngas

Abstract

The partial oxidation of methane (POM) to syngas has attracted the attentions of scientists in the recent 20-30 years due to the depletion of methane and its obvious advantages. Ni-based catalysts were most widely employed in the POM because of their comparable catalytic performance with noble metal-based catalysts as well as their cheap prices. However, Ni-based catalysts were suffered from carbon deposition and sintering which were the main reasons for catalyst deactivation. Therefore it's necessary to improve the abilities of Ni-based catalysts to resist carbon deposition and sintering. In this review, types of Ni-based catalysts that could be used in the POM to syngas are reviewed and at last, the future of Ni-based catalysts in the POM is discussed.

Monolithic Ni–MOx/Ni-foam (M = Al, Zr or Y) catalysts with enhanced heat/mass transfer for energy-efficient catalytic oxy-methane reforming

“…Most efforts have been made on improvement of anti-sintering and -coke Ni-based catalyst, for instance, by adding promoters (alkali, alkali earth, and rare earth metal oxides) or/and utilizing different supports (Al 2 O 3 , ZrO 2 , SiO 2 , La 2 O 3 and Y 2 O 3 ) [8][9][10][11]. The formation of 'hotspots' in the catalyst bed is considered as the one of the main causes for the Ni-sintering and carbon deposition [12]. Thus, to develop a novel catalyst system combining excellent catalytic performance with enhanced heat transfer is a promising strategy to overcome these major drawbacks.…”

Effect of Ni(111) surface alloying by Pt on partial oxidation of methane to syngas: A DFT study

“…Although a wide range of heterogeneous catalysts have been applied to the POM reaction, Ni-based catalysts are generally believed to be the most promising candidate in future industry application owing to moderate cost and good catalytic performance comparable to that of noble metals [7,[13][14][15]. Nevertheless, Ni-based catalysts are very likely to suffer rapid deactivation under POM reaction conditions as a result of loss and sintering of Ni as well as carbon deposition on metal surface.…”

A novel LaGa 0.65 Mg 0.15 Ni 0.20 O 3–δ perovskite catalyst with high performance for the partial oxidation of methane to syngas

“…We tested the LGMN perovskite as the POM catalyst based on its high phase stability at low oxygen partial pressures [13,14]. Hopefully, the partial replacement of Ni by more robust elements like Mg and Ga would improve the stability while still maintaining the high catalytic properties.…”