Effects of alloying for steam or dry reforming of methane: a review of recent studies

Abstract

A survey on the catalytic nature of Ni-based alloy catalysts in recent years provides a direction for future catalyst development.

Modification Strategies of Ni-Based Catalysts with Metal Oxides for Dry Reforming of Methane

“…In recent years, reviews on the catalysts for the DRM reaction mainly focus on specific metal or support materials, such as Ni-based catalysts [34], transition metal catalysts [35], Ni/Al 2 O 3 catalysts [36], silica-based catalysts [37], Lanthanoid-containing Ni-based catalysts [38], metal carbides [39] and alloy catalysts [40]. Very few works are focused on the applications of metal oxides in Ni-based catalysts relating to the modification impacts on the size, morphology, surface, and interface properties that are based on the catalytic activities and anti-deactivation behaviors in the DRM reaction; therefore, this review summarizes the state-of-art developments of Ni-based catalysts regarding the modification strategies (support confinement, metal-support interaction, oxygen defects, and surface acidity/basicity) of metal oxides (basic oxides, rare earth metal oxides, transition metal oxides, and mixed oxides) on the activity, selectivity, stability, and deactivation resistance in the DRM reaction.…”

Bimetallic NiFe Nanoparticles Supported on CeO2 as Catalysts for Methane Steam Reforming

“…Another strategy to enhance the catalytic activity and stability of Ni-based catalysts is to form bimetallic alloys. , Noble metals such as Pt, Pd, Ir, Ru, and Rh have been used to enhance the physicochemical properties of Ni. ,− Early works showed that small amounts of Rh (0.05–0.2%) improved the activity of a Ni/Al 2 O 3 catalyst leading to higher Ni dispersion and reducibility . Noble metals are very effective at activating H 2 molecules and increasing the reducibility of NiO via hydrogen spillover, which can lead to the self-reduction, i.e., self-activation of Ni-based catalysts. − This property is also important to keep Ni reduced during the reforming reaction.…”

A new automated synthesis of a coke-resistant Cs-promoted Ni-supported nanocatalyst for sustainable dry reforming of methane

“…[1][2][3] Until now, although the synthesis technology of supported catalysts has been signicantly improved, the discovery of reliable synthetic methods and advanced tools for highly uniform catalysts remains a challenge. [4][5][6] Dry reforming of methane (DRM) is becoming increasingly important as an eco-friendly process to produce syngas (CO and H 2 ) from greenhouse gases (CH 4 and CO 2 ). 7,8 However, for commercialization, the low stability for carbon deposition, which hinders the accessibility of catalytically active sites by reacting substances, is a critical problem, especially for long periods and under very harsh reaction conditions.…”

“…1–3 Until now, although the synthesis technology of supported catalysts has been significantly improved, the discovery of reliable synthetic methods and advanced tools for highly uniform catalysts remains a challenge. 4–6…”