Effects of the reducing gas atmosphere on performance of FeCeNa catalyst for the hydrogenation of CO2 to olefins

Zhang, Zhenzhou; Liu, Yangyang; Jia, Lei; Sun, Chao; Chen, Baojian; Liu, Rui; Tan, Yisheng; Tu, Weifeng

doi:10.1016/j.cej.2021.131388

Cited by 28 publications

(11 citation statements)

References 48 publications

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“…As a result, they are better suited for use in existing internal combustion engines as blending fractions or even as pure fuels. In addition, strong alcohols like ethanol and butanol are great precursors for short-chain (C 2 -C 4 ) olefins [170], which, when manufactured very selectively through alcohol dehydration under relatively uncomplicated reaction conditions, can be added to the value chains already in place. Overviews on the catalytic hydrogenation of CO 2 have been published in earlier surveys of the literature [171].…”

Section: Mechanism Of Conversionmentioning

confidence: 99%

Oxygenated Hydrocarbons from Catalytic Hydrogenation of Carbon Dioxide

2023

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Once fundamental difficulties such as active sites and selectivity are fully resolved, metal-free catalysts such as 3D graphene or carbon nanotubes (CNT) are very cost-effective substitutes for the expensive noble metals used for catalyzing CO2. A viable method for converting environmental wastes into useful energy storage or industrial wealth, and one which also addresses the environmental and energy problems brought on by emissions of CO2, is CO2 hydrogenation into hydrocarbon compounds. The creation of catalytic compounds and knowledge about the reaction mechanisms have received considerable attention. Numerous variables affect the catalytic process, including metal–support interaction, metal particle sizes, and promoters. CO2 hydrogenation into different hydrocarbon compounds like lower olefins, alcoholic composites, long-chain hydrocarbon composites, and fuels, in addition to other categories, have been explained in previous studies. With respect to catalyst design, photocatalytic activity, and the reaction mechanism, recent advances in obtaining oxygenated hydrocarbons from CO2 processing have been made both through experiments and through density functional theory (DFT) simulations. This review highlights the progress made in the use of three-dimensional (3D) nanomaterials and their compounds and methods for their synthesis in the process of hydrogenation of CO2. Recent advances in catalytic performance and the conversion mechanism for CO2 hydrogenation into hydrocarbons that have been made using both experiments and DFT simulations are also discussed. The development of 3D nanomaterials and metal catalysts supported on 3D nanomaterials is important for CO2 conversion because of their stability and the ability to continuously support the catalytic processes, in addition to the ability to reduce CO2 directly and hydrogenate it into oxygenated hydrocarbons.

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Section: Mechanism Of Conversionmentioning

confidence: 99%

Oxygenated Hydrocarbons from Catalytic Hydrogenation of Carbon Dioxide

2023

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“…The effect of the iron catalysts doping with Cu, V, Zn, Mg, N and Ce was also investigated [11,45,[86][87][88][89][90][91][92]. For example, enhanced light olefin production was observed after nitrogen doping of the Fe catalysts supported on carbon nanotubes [11].…”

Section: Others Promotorsmentioning

confidence: 99%

“…The effect of the reducing atmosphere (CO versus H 2 ) on the efficiency of 3%CeFeNa catalyst toward olefin formation was investigated by Zhang et al [90]. It was found that the catalytic performance strongly depends on the presence of CO and H 2 in the gas atmosphere (Figure 10).…”

Section: Others Promotorsmentioning

confidence: 99%

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Catalysts for the Conversion of CO2 to Low Molecular Weight Olefins—A Review

et al. 2021

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There is a large worldwide demand for light olefins (C2=–C4=), which are needed for the production of high value-added chemicals and plastics. Light olefins can be produced by petroleum processing, direct/indirect conversion of synthesis gas (CO + H2) and hydrogenation of CO2. Among these methods, catalytic hydrogenation of CO2 is the most recently studied because it could contribute to alleviating CO2 emissions into the atmosphere. However, due to thermodynamic reasons, the design of catalysts for the selective production of light olefins from CO2 presents different challenges. In this regard, the recent progress in the synthesis of nanomaterials with well-controlled morphologies and active phase dispersion has opened new perspectives for the production of light olefins. In this review, recent advances in catalyst design are presented, with emphasis on catalysts operating through the modified Fischer–Tropsch pathway. The advantages and disadvantages of olefin production from CO2 via CO or methanol-mediated reaction routes were analyzed, as well as the prospects for the design of a single catalyst for direct olefin production. Conclusions were drawn on the prospect of a new catalyst design for the production of light olefins from CO2.

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“…For the CO 2 conversion via methanol mediated route (CO 2 -MTH), the first step involves the exothermic reaction of CO 2 hydrogenation to methanol, followed by the methanol to hydrocarbons such as esters, 14 olefins (MTO) 31 and aromatics (MTA). 26,32 Although the catalyst activity for CO 2 hydrogenation to methanol has been remarkably improved in recent years, the maximum CO 2 conversion is typically limited by the thermodynamic equilibrium described in eqn (3) and (4).…”

Section: Introductionmentioning

confidence: 99%