Highly efficient electrochemical reforming of CH
            <sub>4</sub>
            /CO
            <sub>2</sub>
            in a solid oxide electrolyser

Lu, Jinhai; Zhu, Changli; Pan, Changchang; Lin, Wenbin; Lemmon, John P.; Chen, Fanglin; Li, Chunsen; Xie, Kui

doi:10.1126/sciadv.aar5100

Cited by 155 publications

(78 citation statements)

References 36 publications

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“…However,i tw as hard to determine whether the Ni 2 + were loaded by doping or ion exchange in theset wo samples. 1 HNMR spectra happened to be able to further clarify the introduction of Ni 2 + in Ni 2 + -CSH-Dop and Ni 2 + -CSH-Iex according to the signals of silanol groups (Si-OH). (Figure 9) In 1 HNMR spectra of ACS and CSH, the chemical shift at 1.29 ppm could be attributedt ot he signal of the terminal Hi n Si-OH.…”

Section: G)mentioning

confidence: 99%

“…The dry reforming of CH 4 (DRM) with CO 2 hasb een considered as an effective method to convert CH 4 into syngas. [1] This reaction pathway is not only beneficial for the reduction of greenhouse gases such as CH 4 and CO 2 ,b ut also capable of producing syngasw ith H 2 /CO ratio desired by the downstream industrial process. [2] Although the great value of DRM reaction in environmentp rotection and industrial applications has been recognized by many people, the development of metal catalysts for this reaction still requires more attentionc onsidering the large number of side reactions and the highly endothermic feature in the DRM process.…”

Section: Introductionmentioning

confidence: 99%

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Highly Dispersed Ni Nanoparticles on Anhydrous Calcium Silicate (ACS) Nanosheets for Catalytic Dry Reforming of Methane: Tuning the Activity by Different Ways of Ni Introduction

Sheng

Zeng

Pang

et al. 2019

Chemistry An Asian Journal

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Three kinds of nickel-loaded anhydrous calcium silicate nanocatalysts( ACS), including Ni-ACS-Dop, Ni-ACS-Iex and Ni-ACS-Im, were prepared by introducing Ni species through doping in the synthesis of calcium silicate hydrate (CSH) nanosheets, ion-exchange with premade CSH nanosheets and deposition on calcined ACS nanosheets, respectively.A lthough Ni speciesw ere introduced in different ways, all the Ni-ACS catalysts showed similarc hemical compositions and microstructures, where Ni nanoparticles were highly dispersed on the ultrathin ACS nanosheets with a large surface area and good thermal stability.H owever,t he differences in the way of Ni introduction did produce Ni with differente lectronic states. The Ni-ACS-Iex catalyst with "surface Ni" as ad ominant form had more electrons enriched on the surface of Ni, which led to the highest activity in the dry reforming of methane (DRM) reaction among the three catalysts, whereas the Ni-ACS-Dop catalystw ith "lattice Ni" as adominant form showed an electron-deficient property and lowesta ctivity.D ifferent from the introduction of a more favourablen anostructure or chemical component to the catalyst system, this work controlled the chemical environment of metal precursorsa nd created metal catalysts with ap referred surfacee lectronic state during synthesis, which could be an ew strategy to improvet he catalytic activity.

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Section: G)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Highly Dispersed Ni Nanoparticles on Anhydrous Calcium Silicate (ACS) Nanosheets for Catalytic Dry Reforming of Methane: Tuning the Activity by Different Ways of Ni Introduction

Sheng

Zeng

Pang

et al. 2019

Chemistry An Asian Journal

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“…It has been reported that exsolved particles are more resilient to agglomeration and coking as compared to the deposited analogues due to the partial embedment of exsolved particles on the perovskite surface. A stronger metal‐support interface is created via the anchoring of exsolved particles on the parent perovskite . Thus, exsolution may be regarded as an elegant one‐step method to grow pinned, coking‐resistant, and socketed particles.…”

Section: Introductionmentioning

confidence: 97%

“…A stronger metal-support interface is created via the anchoring of exsolved particles on the parent perovskite. [61,62] Thus, exsolution may be regarded as an elegant one-step method to grow pinned, coking-resistant, and socketed particles.…”

Section: Introductionmentioning

confidence: 99%

Development of Co Supported on Co−Al Spinel Catalysts from Exsolution of Amorphous Co−Al Oxides for Carbon Dioxide Reforming of Methane

et al. 2019

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In this study, redox exsolution method was used to synthesize Co/Co−Al spinel for dry reforming. The aim is to improve metal‐support interaction, which enhances the catalyst's stability and minimizes carbon deposition. The synthesized catalysts were observed as Co embedded on Co deficient CoAl2O4‐like spinel (denoted as Co−Al spinel). The reduction temperature was optimized at 750 °C. Investigations on the effect of Co loading revealed that optimum Co loading is needed to control the Co particle size, providing balance between limiting carbon deposition rate and preventing dissolution of Co into the support. The best performing catalyst, Co‐15, in which the molar ratio of Co and Al is 15 : 85 produced a stable 81.5 % and 87.4 % conversions for CH4 and CO2 continuously over 24 h of reaction time with 13.51 wt% of carbon deposition. The strong metal‐support interaction of Co and Co−Al spinel in Co‐15 stabilizes and prevents the sintering of Co particles, enhancing the efficiency for dry reforming reaction.

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“…[6] Recently,e lectrochemical conversion of alkanes based on solid oxide electrolysis cells (SOECs) has been investigated intensively. [7] With alkane fed to the anode,t he amount of oxygen species involved in oxidative dehydrogenation reaction is controlled electrochemically,s ot he coke formation and deep oxidation can be inhibited by adjusting as uitable current. [8] Theh igh oxidative dehydrogenation activity can be achieved by surface decoration of anode materials,which is efficient to tune the electronic structure and density of state (DOS) of the interfacial atoms,and regulate the surface oxygen species and adsorption free energy.…”

mentioning

confidence: 99%

Interfacial Enhancement by γ‐Al₂O₃ of Electrochemical Oxidative Dehydrogenation of Ethane to Ethylene in Solid Oxide Electrolysis Cells

et al. 2019

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Oxidative dehydrogenation of ethane (ODE) is limited by the facile deep oxidation and potential safety hazards.N ow,e lectrochemical ODE reaction is incorporated into the anode of as olid oxide electrolysis cell, utilizing the oxygen species generated at anode to catalytically convert ethane.B yi nfiltrating g-Al 2 O 3 onto the surface of La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-d -Sm 0.2 Ce 0.8 O 2-d (LSCF-SDC) anode,t he ethylene selectivity reaches as high as 92.5 %, while the highest ethane conversion is up to 29.1 %a t6 00 8 8Cw ith optimized current and ethane flowr ate.D ensity functional theory calculations and in situ X-ray photoelectron spectroscopy characterizations reveal that the Al 2 O 3 /LSCF interfaces effectively reduce the amount of adsorbed oxygen species,leading to improved ethylene selectivity and stability,a nd that the formation of Al-O-Fea lters the electronic structure of interfacial Fe center with increased density of state around Fermi level and downshift of the empty band, whichenhances ethane adsorption and conversion.Asabasic raw material in the petrochemical industry, ethylene is mainly produced by steam cracking and fluid catalytic cracking of naphtha. [1] With the ever-increasing demand for ethylene and the discovery of ah uge amount of shale gas, [2] thed ehydrogenation of ethane has ignited extensive research owing to its high selectivity and economic competitiveness. [3] Non-oxidative dehydrogenation of ethane to ethylene is limited thermodynamically and generally performed at high temperatures to achieve ahigh conversion, which is always accompanied with the unwanted side reactions producing coke. [4] While oxidative dehydrogenation of ethane (ODE) can overcome the thermodynamic limitation and operate at low temperatures,a nd the presence of oxygen can efficiently depress the coke formation. [5] However,t he possible deep oxidation of hydrocarbons would reduce the ethylene selectivity,and the mixture of ethane and oxygen is ap otential safety hazard. [6] Recently,e lectrochemical conversion of alkanes based on solid oxide electrolysis cells (SOECs) has been investigated intensively. [7] With alkane fed to the anode,t he amount of oxygen species involved in oxidative dehydrogenation reaction is controlled electrochemically,s ot he coke formation and deep oxidation can be inhibited by adjusting as uitable current. [8] Theh igh oxidative dehydrogenation activity can be achieved by surface decoration of anode materials,which is efficient to tune the electronic structure and density of state (DOS) of the interfacial atoms,and regulate the surface oxygen species and adsorption free energy. [9] Herein, electrochemical ODE reaction is incorporated into the anode of as olid oxide CO 2 electrolysis cell ( Figure 1). [8] Thermodynamically,t he total energy demands for CO 2 electrolysis and dehydrogenation of ethane are significantly reduced by 36.5 %( Supporting Information, Figure 1. The coupling of electrochemical ODE and CO 2 electrolysis into aS OEC and TEM image of LSCF-SDC anode infiltrated...

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Highly efficient electrochemical reforming of CH ₄ /CO ₂ in a solid oxide electrolyser

Abstract: Electrochemical reforming of CH4/CO2 is demonstrated in a solid oxide electrolyser.

Cited by 155 publications

References 36 publications

Highly Dispersed Ni Nanoparticles on Anhydrous Calcium Silicate (ACS) Nanosheets for Catalytic Dry Reforming of Methane: Tuning the Activity by Different Ways of Ni Introduction

Highly Dispersed Ni Nanoparticles on Anhydrous Calcium Silicate (ACS) Nanosheets for Catalytic Dry Reforming of Methane: Tuning the Activity by Different Ways of Ni Introduction

Development of Co Supported on Co−Al Spinel Catalysts from Exsolution of Amorphous Co−Al Oxides for Carbon Dioxide Reforming of Methane

Interfacial Enhancement by γ‐Al₂O₃ of Electrochemical Oxidative Dehydrogenation of Ethane to Ethylene in Solid Oxide Electrolysis Cells

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Highly efficient electrochemical reforming of CH 4 /CO 2 in a solid oxide electrolyser

Abstract: Electrochemical reforming of CH4/CO2 is demonstrated in a solid oxide electrolyser.

Cited by 155 publications

References 36 publications

Highly Dispersed Ni Nanoparticles on Anhydrous Calcium Silicate (ACS) Nanosheets for Catalytic Dry Reforming of Methane: Tuning the Activity by Different Ways of Ni Introduction

Highly Dispersed Ni Nanoparticles on Anhydrous Calcium Silicate (ACS) Nanosheets for Catalytic Dry Reforming of Methane: Tuning the Activity by Different Ways of Ni Introduction

Development of Co Supported on Co−Al Spinel Catalysts from Exsolution of Amorphous Co−Al Oxides for Carbon Dioxide Reforming of Methane

Interfacial Enhancement by γ‐Al2O3 of Electrochemical Oxidative Dehydrogenation of Ethane to Ethylene in Solid Oxide Electrolysis Cells

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Highly efficient electrochemical reforming of CH ₄ /CO ₂ in a solid oxide electrolyser

Interfacial Enhancement by γ‐Al₂O₃ of Electrochemical Oxidative Dehydrogenation of Ethane to Ethylene in Solid Oxide Electrolysis Cells