Influence of the preparation method in the metal-support interaction and reducibility of Ni-Mg-Al based catalysts for methane steam reforming

Azancot, Lola; Bobadilla, Luis F.; Santos, J.L.; Córdoba, J.M.; Centeno, M.A.; Odriozola, J.A.

doi:10.1016/j.ijhydene.2019.05.167

Cited by 68 publications

(15 citation statements)

References 51 publications

(55 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These results were related to metal dispersion, the highest dispersion was, in fact, obtained with 0.1 wt % loading of platinum. Azancot et al studied the effect of the preparation method of Ni-Mg-Al based catalysts on the activity in methane steam reforming [43]. The catalysts were prepared by means of three techniques, for the impregnation of γ-alumina with magnesium nitrate and nickel nitrate, for the coprecipitation-impregnation method, in which the magnesium and aluminum nitrates were coprecipitated and, subsequently, impregnated with nickel nitrate, finally for coprecipitation of the three metal nitrates.…”

Section: Polymetallic Catalysts Promotersmentioning

confidence: 99%

A Short Review on Ni Based Catalysts and Related Engineering Issues for Methane Steam Reforming

2020

View full text Add to dashboard Cite

Hydrogen is an important raw material in chemical industries, and the steam reforming of light hydrocarbons (such as methane) is the most used process for its production. In this process, the use of a catalyst is mandatory and, if compared to precious metal-based catalysts, Ni-based catalysts assure an acceptable high activity and a lower cost. The aim of a distributed hydrogen production, for example, through an on-site type hydrogen station, is only reachable if a novel reforming system is developed, with some unique properties that are not present in the large-scale reforming system. These properties include, among the others, (i) daily startup and shutdown (DSS) operation ability, (ii) rapid response to load fluctuation, (iii) compactness of device, and (iv) excellent thermal exchange. In this sense, the catalyst has an important role. There is vast amount of information in the literature regarding the performance of catalysts in methane steam reforming. In this short review, an overview on the most recent advances in Ni based catalysts for methane steam reforming is given, also regarding the use of innovative structured catalysts.

show abstract

Section: Polymetallic Catalysts Promotersmentioning

confidence: 99%

A Short Review on Ni Based Catalysts and Related Engineering Issues for Methane Steam Reforming

2020

View full text Add to dashboard Cite

show abstract

“…Meanwhile, the metal-support interaction can also greatly affect various features of the catalyst, such as the dispersion, particle size, and metal-support interface, which will further influence the catalytic activity, coke-resistant property, and sintering-proof performances of the catalyst (Bu et al, 2020). Besides, the instinct properties of the support, such as acid-base property and redox property, also influence the activation process of CO 2 , which will further reduce the possibility of the side reactions (Silveira et al, 2017;Azancot et al, 2019). Various materials, such as metal oxides, silica, composite metal oxides, ordered mesoporous materials, zeolites, and carbon materials, have been widely investigated as the supports of Ni-based catalysts toward CRM reaction, which will be presented in the following text.…”

Section: Ni-based Catalysts With Different Supportsmentioning

confidence: 99%

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

Chen

et al. 2020

Front. Chem.

View full text Add to dashboard Cite

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.

show abstract

“…Hence adding promoters into nickel can hinder coke formation and reduce sintering possibilities. Promoters' addition has been broadly studied and is a subject of interest for many researchers 16‐18 .…”

Section: Introductionmentioning

confidence: 99%

Electrophoretic coating for steam methane micro‐reformer: Optimum voltage and time, channel design, and substrate type

Mohammadnezami

Irankhah

2021

Int J Energy Res

View full text Add to dashboard Cite

Summary Following our previous simulation study, in this study manufacturing of previously simulated micro‐reformer was carried out in order to study intensifying steam methane reforming. SUS 310 was selected as the base material and a copper gasket was used for sealing. Because of simplicity and being straightforward, the electrophoretic deposition method was used for the first time to coat a commercial Nickel‐based reforming catalyst onto reaction plates. All reaction plates had the dimensions of 21 × 20 mm and at most 3 mm depth. S310 was used for anode and S304 for cathode. Reduction of catalyst was performed at 650°C. Five cm quartz packing was used to preheat feed before entering the micro‐reformer. In the first part, after investigating important variables of voltage and coating time in the range of 1 to 4 minutes and 100 to 140 V, optimum conditions were found to be 120 V and 1.5 minute, respectively, which gave 5.1 mg/cm2 surface density. At optimum condition, micro‐reformer had better performance than packed‐bed reactor even at low weight hourly space velocities. In the second part of the study, three channel designs, that is, parallel, splitting‐jointing, and pin‐hole were designed, manufactured, and mounted into the micro‐reformer. Based on specific methane conversion, splitting‐jointing had marginally better performance than parallel channels. This finding was contrary to the simulation results. This difference originates from two reasons: (a) monolayer assumption in the simulation was not real because of inherent porosity in the EPD coated layer; (b) a gap of 0.2 mm between the micro‐reformer casing and the reaction plate would appear if temperature exceeded 650°C and this gap caused flow by pass‐through channels. At the third and final part, copper substrate was coated and compared with S310 substrate. Results did not show so much better methane conversion because dimension were very small, which means temperature along the depth or length did not vary considerably. Stability analysis, reducing the channel sizes, redesigning the micro‐reformer to add endothermic reaction (such as methane catalytic combustion) section will be our next studies.

show abstract

Influence of the preparation method in the metal-support interaction and reducibility of Ni-Mg-Al based catalysts for methane steam reforming

Cited by 68 publications

References 51 publications

A Short Review on Ni Based Catalysts and Related Engineering Issues for Methane Steam Reforming

A Short Review on Ni Based Catalysts and Related Engineering Issues for Methane Steam Reforming

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

Electrophoretic coating for steam methane micro‐reformer: Optimum voltage and time, channel design, and substrate type

Contact Info

Product

Resources

About