Recent Progresses in the Design and Fabrication of Highly Efficient Ni-Based Catalysts With Advanced Catalytic Activity and Enhanced Anti-coke Performance Toward CO2 Reforming of Methane

Abstract

CO 2 reforming of methane (CRM) can effectively convert two greenhouse gases (CO 2 and CH 4) into syngas (CO + H 2). This process can achieve the efficient resource utilization of CO 2 and CH 4 and reduce greenhouse gases. Therefore, CRM has been considered as a significantly promising route to solve environmental problems caused by greenhouse effect. Ni-based catalysts have been widely investigated in CRM reactions due to their various advantages, such as high catalytic activity, low price, and abundant reserves. However, Ni-based catalysts usually suffer from rapid deactivation because of thermal sintering of metallic Ni active sites and surface coke deposition, which restricted the industrialization of Ni-based catalysts toward the CRM process. In order to address these challenges, scientists all around the world have devoted great efforts to investigating various influencing factors, such as the option of appropriate supports and promoters and the construction of strong metal-support interaction. Therefore, we carefully summarized recent development in the design and preparation of Ni-based catalysts with advanced catalytic activity and enhanced anti-coke performance toward CRM reactions in this review. Specifically, recent progresses of Ni-based catalysts with different supports, additives, preparation methods, and so on, have been summarized in detail. Furthermore, recent development of reaction mechanism studies over Ni-based catalysts was also covered by this review. Finally, it is prospected that the Ni-based catalyst supported by an ordered mesoporous framework and the combined reforming of methane will become the future development trend.

Influence of Highly Stable Ni2+ Species in Ni Phyllosilicate Catalysts on Selective Hydrogenation of Furfural to Furfuryl Alcohol

“…Nickel is one of the most frequently used metals in a wide variety of industrial manufacturing. Silica-supported nickel catalysts (Ni/SiO 2 ) are used extensively in catalytic reactions due to their low cost, high specific surface area, easy functionalization, and controllable morphology/adjustable pore structures. − However, Ni/SiO 2 usually suffers from a weak interaction between nickel species and silica supports, which is a significant drawback that can cause leaching of nickel species during a liquid phase reaction as well as agglomeration and sintering of nickel under a high thermal treatment and reaction process, leading to low catalytic activity, deactivation of catalyst, and poor stability. Several efficient strategies have been reported to improve nickel dispersion and enhance the metal–support interaction such as the addition of various promoters such as La 2 O 3 and V 2 O 5 , the formation perovskite and hydrotalcite structures, , the modification of the support and developed preparation methods to enhance the metal–support interaction and inhibit the catalyst agglomeration such as molecular layer deposition, and the construction of nickel-based catalysts with a confinement effect like mesostructured cellular foam .…”

Emerging natural and tailored perovskite-type mixed oxides–based catalysts for CO2 conversions

“…Therefore, the efficient utilization of methane, especially the reforming of carbon dioxide, has attracted widespread attention. Simultaneously, the greenhouse gases (GHG) methane and carbon dioxide are the main "culprits" of global warming, their efficient use has always been a research focus (Wang et al, 2016;Wu et al, 2020). CO 2 reforming of CH 4 is also called dry reforming of CH 4 (DRM) due to not involving water in reactants, and it is an extremely endothermic reaction (Eq.…”

Boosting Conversion of CO2 to Light Olefins over MgO-Promoted ZnZrO/SAPO-34 Bifunctional Catalyst

“…It has been demonstrated that one of the keys to CO 2 conversion was the activation of CO 2 and alkaline-earth metal can improve the CO 2 adsorption capacity. 19 In the alkaline-earth metal, MgO is extensively used as a Lewis alkaline support to boost the adsorption and activation of CO 2 20 and magnesium oxides with high dispersion can form metal carbonate species with CO 2 . It is suggested that Mg-ZnZrO with SAPO-34 might demonstrate high catalytic activity and selectivity for CO 2 hydrogenation to C 2 = −C 4…”

“…However, its CO 2 conversion rate and C 2 = –C 4 = yield still needs to be improved. It has been demonstrated that one of the keys to CO 2 conversion was the activation of CO 2 and alkaline-earth metal can improve the CO 2 adsorption capacity . In the alkaline-earth metal, MgO is extensively used as a Lewis alkaline support to boost the adsorption and activation of CO 2 and magnesium oxides with high dispersion can form metal carbonate species with CO 2 .…”