Advances in catalytic conversion of methane and carbon dioxide to highly valuable products

Cai, Xiaoyu; Hu, Yun Hang

doi:10.1002/ese3.278

Cited by 114 publications

(76 citation statements)

References 298 publications

(554 reference statements)

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“…Plenty of reviews have been published on pure thermo‐ or pure photocatalytic CO 2 reduction, but only a few have focused on the integration of thermo‐ and photocatalytic processes for CO 2 reduction . Very recently, Ozin and co‐workers summarized the physical principles of photothermal catalysis in CO 2 reduction, but was limited to catalytic systems that could simultaneously generate heat and catalyze reactions under illumination with light .…”

Section: Introductionmentioning

confidence: 99%

Coupling of Solar Energy and Thermal Energy for Carbon Dioxide Reduction: Status and Prospects

2020

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Enormous efforts have been devoted to the reduction of carbon dioxide (CO2) by utilizing various driving forces, such as heat, electricity, and radiation. However, the efficient reduction of CO2 is still challenging because of sluggish kinetics. Recent pioneering studies from several groups, including us, have demonstrated that the coupling of solar energy and thermal energy offers a novel and promising strategy to promote the activity and/or manipulate selectivity in CO2 reduction. Herein, we clarify the definition and principles of coupling solar energy and thermal energy, and comprehensively review the status and prospects of CO2 reduction by coupling solar energy and thermal energy. Catalyst design, reactor configuration, photo‐mediated activity/selectivity, and mechanism studies in photo‐thermo CO2 reduction will be emphasized. The aim of this Review is to promote understanding towards CO2 activation and provide guidelines for the design of new catalysts for the efficient reduction of CO2.

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Section: Introductionmentioning

confidence: 99%

Coupling of Solar Energy and Thermal Energy for Carbon Dioxide Reduction: Status and Prospects

2020

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“…The catalytic materials that exhibit high catalytic activity for this reaction are usually based on noble metals including Pt, Pd, Ru, and Rh. 4 Non-noble metals that have shown promising catalytic activity include Ni 5,6 and Co. 7 Ni has been the most widely studied non-noble metal catalyst due its promising performance and lower cost compared to noble metals. Bimetallic catalytic systems have also been studied and have often shown enhanced catalytic performance compared to their single metal counterparts.…”

Section: Introductionmentioning

confidence: 99%

Enhanced selectivity of syngas in partial oxidation of methane: A new route for promising Ni‐alumina catalysts derived from Ni/ γ‐AlOOH with modified Ni dispersion

et al. 2020

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Partial oxidation of methane was studied over new Ni nanocatalysts prepared from Ni-impregnated γ-AlOOH, which were compared with their counterparts derived from impregnated γ-Al 2 O 3 and α-Al 2 O 3. The prepared catalysts were characterized by powder X-ray diffraction (XRD), N 2-sorption, H 2-temperatue programmed reduction, scanning electron microscopy, transmission electron microscopy, thermal gravimetric analysis, CO 2-and NH 3-temperatureprogrammed desorption, Raman spectroscopy, CO chemisorption, and diffuse reflectance infrared Fourier transform spectroscopy of adsorbed CO. Employing γ-AlOOH as the support precursor resulted in significantly improved textural properties and catalytic activity. The structure of the support precursor and its surface properties showed a strong influence on the type of Ni active species and their interactions with the support. γ-AlOOH-derived catalysts showed NiO as the dominant Ni species when calcined at 500 C to 650 C, while NiAl 2 O 4 became the sole phase at higher temperatures. On the other hand, mixtures of NiO and NiAl 2 O 4 formed over γ-Al 2 O 3 , calcined before impregnation, regardless of the precalcination temperature. All γ-AlOOHderived catalysts showed higher specific surface areas compared to their counterparts derived from impregnated γ-Al 2 O 3. Upon calcination at moderate temperatures, γ-AlOOH-derived catalysts also showed modified textural and morphological properties of the Ni active particles, including higher Ni dispersion, larger metal surface area, and smaller Ni crystallites. The support precursor and the pretreatment conditions showed a strong influence on the catalytic performance, which was referred to their significant effect on the type of the Ni species and interactions with the support. All catalysts showed higher catalytic activity than the α-Al 2 O 3-derived catalyst, with CH 4 conversion between 86% and 88.5% at 700 C. While γ-AlOOHand γ-Al 2 O 3-derived catalysts calcined at 650 C showed a stable CH 4 conversion around 88%, and higher syngas

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“…However, it is also important that the catalyst be able to discriminate between the strong C-H bonds in methane and the relatively weak C-H bonds in higher order hydrocarbons [5]. Therein lies a key problem in synthesizing higher order olefins from natural gas rather than using conventional methods such as cracking: adding carbons to a growing chain becomes increasingly difficult with each elongation.…”

Section: Use Of Natural Gas As a Feedstockmentioning

confidence: 99%

“…There are three main categories of pathways demonstrated thus far for the activation of methane to form higher order products: syngas production, oxidative methane coupling, and direct conversion to said value-added chemicals [5]. Syngas, a mixture primarily consisting of hydrogen and carbon monoxide, has long been a highly researched topic as an intermediate for natural gas conversion and can be derived from a variety of cheap and environmentally friendly sources including natural gas, biomass, and industrial waste.…”

Section: Use Of Natural Gas As a Feedstockmentioning

confidence: 99%

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Review of Established and Emergent Methods for the Production of C4 Olefins

Koval¹

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Review of Established and Emergent Methods for the Production of C4 Olefins James Koval Current production of C4 olefins is dominated by naphtha cracking and butane dehydrogenation, but significant research interest is developing in alternate feedstocks due to an abundance of inexpensive natural gas and bioethanol. The current C4 olefin production methods are costly, make use of already-depleted petroleum resources, and are often hazardous to workers, which forms the impetus for investigation into alternative methods and assessment of their viability as a future means of olefin production. Methods of natural gas conversion to higher order hydrocarbons are discussed, including Fischer-Tropsch synthesis and oxidative methane coupling, each of which could form the first step in a hypothetical natural gas-to-olefins process. The historically common Lebedev, Ostromislensky, and Fripiat methods for 1,3-butadiene production from ethanol feedstocks are described and analyzed, although these processes largely fell out of favor in the decades following World War II in favor of sources derived from naphtha cracking. Another well-known process involving C4 olefins, olefin metathesis, is considered, although the reaction is more commonly used to produce propylene. Biological processes are discussed as well, including the well-known production of bioethanol from sugars and starches, and also more novel processes such as an effort to use genetically engineered microorganisms to produce specific intermediates for olefin production, and in some cases, direct olefin production from these organisms. Finally, several promising schemes are identified and analyzed, in an attempt to compare their potential viability in key areas. Two of the most promising emergent methods today identified in this review are the bio-catalyzed production of 1,4-butanediol and/or butadiene using E. coli, and a microwave radiation-assisted scheme in which methane is selectively dimerized twice to form 1-butene.

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Advances in catalytic conversion of methane and carbon dioxide to highly valuable products

Cited by 114 publications

References 298 publications

Coupling of Solar Energy and Thermal Energy for Carbon Dioxide Reduction: Status and Prospects

Coupling of Solar Energy and Thermal Energy for Carbon Dioxide Reduction: Status and Prospects

Enhanced selectivity of syngas in partial oxidation of methane: A new route for promising Ni‐alumina catalysts derived from Ni/ γ‐AlOOH with modified Ni dispersion

Review of Established and Emergent Methods for the Production of C4 Olefins

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