Catalytic carbon dioxide hydrogenation to methane: A review of recent studies

Su, Xiong; Xu, Jinghua; Liang, Bo; Duan, Hongmin; Hou, Baolin; Huang, Yanqiang

doi:10.1016/j.jechem.2016.03.009

Cited by 328 publications

(218 citation statements)

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“…The second path includes the direct hydrogenation of CO2 to CH4, without formation of any CO intermediate ( Figure 2). As said above, numerous reviews exist on this argument (i.e., mechanistic aspects, reactor type modeling, simulation); therefore, it is outside the scope of the present paper [10,11]. The first part of the paper is dedicated to noble metal catalysts.…”

Section: Introductionmentioning

confidence: 99%

“…Several studies [1][2][3][4][5][6][7][8][9] and recent reviews [10][11][12][13][14] have focused on the methanation reaction, mainly due to its important implications for energy and the environment. Methanation processes produce methane (Substitute or Synthetic Natural Gas, SNG) from hydrogen and CO x .…”

Section: Introductionmentioning

confidence: 99%

“…The methanation of CO 2 is an exothermic reaction (Equation (1)), typically operating between 200 • C and 450 • C, depending on the catalyst and experimental conditions [8,10]. Although several papers have been published on the subject in the recent past, no general consensus exists on the reaction's operating mechanism, mainly due to the uncertainty in determining the intermediate compound involved in the rate determining step [10,11].…”

Section: Introductionmentioning

confidence: 99%

“…Catalysts 2017, 7, 59 2 of 27 reaction's operating mechanism, mainly due to the uncertainty in determining the intermediate compound involved in the rate determining step [10,11]. The first and most popular path considers the conversion of CO2 to CO, which, in turn, is hydrogenated to CH4 by the same mechanism involved in CO methanation.…”

Section: Introductionmentioning

confidence: 99%

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Supported Catalysts for CO2 Methanation: A Review

et al. 2017

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CO 2 methanation is a well-known reaction that is of interest as a capture and storage (CCS) process and as a renewable energy storage system based on a power-to-gas conversion process by substitute or synthetic natural gas (SNG) production. Integrating water electrolysis and CO 2 methanation is a highly effective way to store energy produced by renewables sources. The conversion of electricity into methane takes place via two steps: hydrogen is produced by electrolysis and converted to methane by CO 2 methanation. The effectiveness and efficiency of power-to-gas plants strongly depend on the CO 2 methanation process. For this reason, research on CO 2 methanation has intensified over the last 10 years. The rise of active, selective, and stable catalysts is the core of the CO 2 methanation process. Novel, heterogeneous catalysts have been tested and tuned such that the CO 2 methanation process increases their productivity. The present work aims to give a critical overview of CO 2 methanation catalyst production and research carried out in the last 50 years. The fundamentals of reaction mechanism, catalyst deactivation, and catalyst promoters, as well as a discussion of current and future developments in CO 2 methanation, are also included.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Supported Catalysts for CO2 Methanation: A Review

et al. 2017

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“…The selective hydrogenation of multiple carbon-carbon bonds, nitroarenes, carbonyl compounds, and/or benzene rings is an important industrial process for the purification of alkene streams from petroleum cracking or to produce value-added chemicals [141][142][143][144][145]. Supported noble metals, particularly Pt [143,146,147], Pd [148][149][150], and Ru [147,[151][152][153], are highly active catalysts for hydrogenation reactions.…”

Section: Hydrogenation Reactionsmentioning

confidence: 99%

Graphitized nanocarbon-supported metal catalysts: synthesis, properties, and applications in heterogeneous catalysis

Huang

2017

Sci. China Mater.

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Graphitized nanocarbon materials can be an ideal catalyst support for heterogeneous catalytic systems. Their unique physical and chemical properties, such as large surface area, high adsorption capacity, excellent thermal and mechanical stability, outstanding electronic properties, and tunable porosity, allow the anchoring and dispersion of the active metals. Therefore, currently they are used as the key support material in many catalytic processes. This review summarizes recent relevant applications in supported catalysts that use graphitized nanocarbon as supports for catalytic oxidation, hydrogenation, dehydrogenation, and C-C coupling reactions in liquid-phase and gas-solid phase-reaction systems. The latest developments in specific features derived from the morphology and characteristics of graphitized nanocarbon-supported metal catalysts are highlighted, as well as the differences in the catalytic behavior of graphitized nanocarbon-supported metal catalysts versus other related catalysts. The scientific challenges and opportunities in this field are also discussed. Keywords: nanocarbon materials; graphitized carbon supports; metal catalysts; hetergeneous catalysis INTRODUCTIONCarbon combines its atoms in diverse hybridization states (sp, sp 2 , sp 3 ) to form a variety of polymorphs. These are composed entirely of carbon but have different physical structures and different names, including diamond, graphite, fullerenes, and carbines, among others [1][2][3][4][5]. Because these various and versatile allotropes produce materials with a large range of properties, carbon materials can be used in a number of technological processes, including high-tech catalytic ones [6][7][8][9][10].In heterogeneous catalysis, carbon material plays wellestablished and important roles in a wide range of applications, both as catalyst in its own right and as a unique support material [11][12][13][14][15]. The chemical stability of carbon supports in some specifically aqueous phase biomass conversion surpasses that of metal oxide materials; in addition, carbon materials present other common and key advantages as support materials for catalysis [1,5]. From the point of physical structure, porous carbon can be prepared in different forms (granules, cloth, fibers, pallets, etc.). Due to its chemical properties, carbon structure is resistant to both acidic and basic media. The structure of carbon is stable at high temperature (even above 1023 K under inert atmosphere). The hydrophilic/ hydrophobic nature of carbon can be easily modified. Active metals on the support can be easily reduced. For the purposes of industrial economy and environment, the active phase can be easily recovered. Conventional carbon supports are lower-cost and more easily available than other conventional supports. Although several kinds of carbon materials have been studied, active carbon (AC) [12,[16][17][18][19] and, to a lesser extend, carbon black [20][21][22][23] have long been the most commonly used carbon supports. AC is an amorphous solid prepa...

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