γ-Alumina-Supported Ni-Mo Carbides as Promising Catalysts for CO&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; Methanation

Yao, Lu; Wang, Ye; Gálvez, María Elena; Hu, Changwei; Costa, Patrick Da

doi:10.4236/mrc.2017.64010

Cited by 7 publications

(5 citation statements)

References 20 publications

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“…The fitted curves of the doublet 3d 3/2 and 3d 5/2 are indicated by the red and green lines, respectively, in Figure 4B,C. Coherently, the binding energy values of Mo ions in the 4 + and 6 + oxidation states in the samples are in good agreement with the literature data 54,59,60 . Lastly, Figure 4C shows the main doublet of S 2p located at binding energies of 161 and 163 eV are ascribed to the S 2p 3/2 and S 2p 1/2 , respectively 60‐62 …”

Section: Resultssupporting

confidence: 80%

“…The peak centered in the range of 855 to 860 eV is attributed to Ni 2p 3/2 and the peak centered in the range of 873 to 878 eV is ascribed to Ni 2p 1/2, which are corresponding to characteristic features of metallic Ni. The other two peaks centered at around 860 and 880 eV are considered as shake up type peaks of Ni 53‐56 . As seen in Figure 4A‐C, all the four characteristic peaks of metallic Ni are fitted well.…”

Section: Resultsmentioning

confidence: 79%

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Molybdenum compound cocatalyzed Ni‐based anode electrocatalysts for EOR in alkaline media

Kazan

2021

Int J Energy Res

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Summary In this study, Mo2C and MoS2 were used as cocatalyst for a non‐noble metal for the first time for ethanol electro‐oxidation reaction (EOR) in alkaline media. Anode electrocatalysts containing Nickel, Mo compound, and carbon support were synthesized at different weight ratios of Ni and Mo2C (or MoS2) while keeping the carbon support weight constant in each catalyst combination to investigate the best weight ratio among our range. Physical characterizations of the electrocatalysts were investigated by XRD, XPS, SEM‐EDS, EDAX, and TEM techniques. Electrochemical performance of the catalysts was studied via cyclic voltammetry (CV), linear sweep voltammetry (LSV), and chronoamperometry (CA) by using a home‐made electrochemical cell test system exhibiting similar alkaline direct ethanol fuel cell (ADEFC) architecture by giving the opportunity of using an anion exchange membrane. All of the Ni‐Mo2C/C and Ni‐MoS2/C at different weight ratios were shown better performance than pristine Ni and Ni/C. The highest current density was measured with Ni‐Mo2C/C‐2 (11.4 mA cm−2) anode catalyst, which exhibits the highest electrochemical reaction rate. The diffusion coefficient of the catalysts was calculated by using the data from linear LSV. CA experiment results showed that the tolerance for catalytic poisoning and durability of Ni‐Mo2C/C‐2 was better among all the electrocatalysts. Highlights Literature survey showed that Mo2C and MoS2 are promising co‐catalysts for EOR. However, there is a lack of study on the use of Mo2C or MoS2 as co‐catalyst with a non‐noble metal. Molybdenum compound containing transition metal‐based anode electro‐catalysts were synthesized for EOR in alkaline media. A home‐made electrochemical cell is designed to make the system more similar to an ADEFC system. The results of the electrochemical characterizations are showed that the Mo compound addition increased the catalytic activity and stability.

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Section: Resultssupporting

confidence: 80%

Section: Resultsmentioning

confidence: 79%

Molybdenum compound cocatalyzed Ni‐based anode electrocatalysts for EOR in alkaline media

Kazan

2021

Int J Energy Res

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“…Previous research showed that an alumina supported NiMo catalyst could be used to convert vegetable oil to alkanes and alkylbenzene [ 79 ]. In addition to that, alumina supported NiMo and CoMo catalysts are applicable as an effective deoxygenation catalyst to produce hydrocarbon products [ 80 ]. Nevertheless, the metal-based catalyst also resulted in the decrement of yield due to coke formation and high acidity.…”

Section: Catalysis In Catalytic Pyrolysis Of Triglyceride Feedstocksmentioning

confidence: 99%

Recent Advances of Triglyceride Catalytic Pyrolysis via Heterogenous Dolomite Catalyst for Upgrading Biofuel Quality: A Review

et al. 2023

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This review provides the recent advances in triglyceride catalytic pyrolysis using heterogeneous dolomite catalysts for upgrading biofuel quality. The production of high-quality renewable biofuels through catalytic cracking pyrolysis has gained significant attention due to their high hydrocarbon and volatile matter content. Unlike conventional applications that require high operational costs, long process times, hazardous material pollution, and enormous energy demand, catalytic cracking pyrolysis has overcome these challenges. The use of CaO, MgO, and activated dolomite catalysts has greatly improved the yield and quality of biofuel, reducing the acid value of bio-oil. Modifications of the activated dolomite surface through bifunctional acid–base properties also positively influenced bio-oil production and quality. Dolomite catalysts have been found to be effective in catalyzing the pyrolysis of triglycerides, which are a major component of vegetable oils and animal fats, to produce biofuels. Recent advances in the field include the use of modified dolomite catalysts to improve the activity and selectivity of the catalytic pyrolysis process. Moreover, there is also research enhancement of the synthesis and modification of dolomite catalysts in improving the performance of biofuel yield conversion. Interestingly, this synergy contribution has significantly improved the physicochemical properties of the catalysts such as the structure, surface area, porosity, stability, and bifunctional acid–base properties, which contribute to the catalytic reaction’s performance.

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“…Hence there is clear connection between the carbide structure and the enhanced CO2-methanation performance is deemed to be ascribed to the carburization process. Generally, carburisation enhances the basicity of the resulting Ni-Mo2C/Al2O3 catalyst and thus CO2 absorption/activation on its surface is favoured [70].…”

Section: Molybdenum Carbidementioning

confidence: 99%

Transition Metal Carbides (TMCs) Catalysts for Gas Phase CO2 Upgrading Reactions: A Comprehensive Overview

Zhang

Pastor‐Pérez

et al. 2020

Catalysts

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Increasing demand for CO2 utilization reactions and the stable character of CO2 have motivated interest in developing highly active, selective and stable catalysts. Precious metal catalysts have been studied extensively due to their high activities, but their implementation for industrial applications is hindered due to their elevated cost. Among the materials which have comparatively low prices, transition metal carbides (TMCs) are deemed to display catalytic properties similar to Pt-group metals (Ru, Rh, Pd, Ir, Pt) in several reactions such as hydrogenation and dehydrogenation processes. In addition, they are excellent substrates to disperse metallic particles. Hence, the unique properties of TMCs make them ideal substitutes for precious metals resulting in promising catalysts for CO2 utilization reactions. This work aims to provide a comprehensive overview of recent advances on TMCs catalysts towards gas phase CO2 utilization processes, such as CO2 methanation, reverse water gas shift (rWGS) and dry reforming of methane (DRM). We have carefully analyzed synthesis procedures, performances and limitations of different TMCs catalysts. Insights on material characteristics such as crystal structure and surface chemistry and their connection with the catalytic activity are also critically reviewed.

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γ-Alumina-Supported Ni-Mo Carbides as Promising Catalysts for CO<sub>2</sub> Methanation

Cited by 7 publications

References 20 publications

Molybdenum compound cocatalyzed Ni‐based anode electrocatalysts for EOR in alkaline media

Molybdenum compound cocatalyzed Ni‐based anode electrocatalysts for EOR in alkaline media

Recent Advances of Triglyceride Catalytic Pyrolysis via Heterogenous Dolomite Catalyst for Upgrading Biofuel Quality: A Review

Transition Metal Carbides (TMCs) Catalysts for Gas Phase CO2 Upgrading Reactions: A Comprehensive Overview

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