Tailoring lattice oxygen triggered NiO/Ca9Co12O28 catalysts for sorption-enhanced renewable hydrogen production

Sun, Zhao; Shi, Weizhi; Chen, Pei; Russell, Christopher K.; Cheng, Dongfang; Sun, Zhiqiang; Gong, Jinlong

doi:10.1016/j.apcatb.2022.121642

Cited by 20 publications

(4 citation statements)

References 59 publications

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“…2b). 62 This indicates the existence of surface Ni species in the form of Ni 0 aer hydrogen reduction, which play a catalytic role in methane decomposition. The peaks at 855.7 eV and 874.4 eV may be the Ni species of Ni +d (0 < d < 2).…”

Section: Structure Identication and Mechanism Revelationmentioning

confidence: 96%

Reinforcing hydrogen and carbon nanotube co-production via Cr–O–Ni catalyzed methane decomposition

Sun,

Gong,

Cheng

et al. 2024

J. Mater. Chem. A

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Section: Structure Identication and Mechanism Revelationmentioning

confidence: 96%

Reinforcing hydrogen and carbon nanotube co-production via Cr–O–Ni catalyzed methane decomposition

Sun,

Gong,

Cheng

et al. 2024

J. Mater. Chem. A

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“…[9][10][11] Nevertheless, Ni-based catalysts are easily deactivated due to sintering, agglomeration, and coke deposition. [12,13] The stability of a catalyst is a matter of life and death in various materials. Therefore, new-generation catalysts with great activity and stability are urgently required.…”

Section: Introductionmentioning

confidence: 99%

Modulating Mxene‐Derived Ni‐Mo_m‐Mo_2‐mTiC₂T_x Structure for Intensified Low‐Temperature Ethanol Reforming

Shi,

Zhang,

et al. 2023

Advanced Energy Materials

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The technology of steam reforming of bioethanol has drawn great attention to green hydrogen production. However, catalyst deactivation has always been a significant obstacle to its applications. Here, a series of yNi/Mo2TiC2Tx (yNi/MTC) materials are tailored as robust catalysts for highly efficient long‐term ethanol reforming. The results reveal that hydrogen utilization efficiency of up to 95.6% and almost total ethanol conversion can be achieved at 550 °C using a 10Ni/MTC‐72h catalyst. Moreover, this catalyst has remarkable stability without obvious deactivation after 100 h of bioethanol reforming, which can be attributed to the formation of a Ni─Mo alloy and the strong interaction of the Ni‐Mom‐Mo2‐mTiC2Tx structure. The FTIR‐MS studies demonstrate the superiority of the 10Ni/MTC‐72h catalyst for reinforcing low‐temperature bioethanol activation, as verified by the faster conversion of acetate species than with Ni/Al2O3. The adsorption energies of ethanol on the surface of Ni (−1.07 eV) and Ni/MTC (−1.46 eV) are compared by density functional theory calculations and show the superiority of the Ni/MTC catalyst for activating ethanol during steam reforming. This study provides new implications for highly stabilized Ni‐Mom‐Mo2‐mTiC2Tx construction, which is expected to substantially promote the development and application of bioethanol‐to‐hydrogen production technologies.

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“…18 The transfer of oxygen is achieved by continuous cycles of oxygen carriers between two redox reactions. 19,20 The CLOCM system consists of two parts: a fuel reactor and an air reactor, as shown in Figure 1 oxygen in the oxygen carrier is used to provide reactive oxygen for methane activation, while the oxygen carrier promotes C− C long-chain growth to generate target products. The reduced oxygen carrier is oxidized to restore oxygen species by air in the air reactor and then recirculates back to the fuel reactor.…”

Section: Introductionmentioning

confidence: 99%

“…To solve this problem, chemical looping oxidation coupling of methane (CLOCM) was proposed. , Unlike the conventional OCM reaction, elemental oxygen is supplied by the oxygen carriers in the CLOCM reaction . The transfer of oxygen is achieved by continuous cycles of oxygen carriers between two redox reactions. , The CLOCM system consists of two parts: a fuel reactor and an air reactor, as shown in Figure . The lattice oxygen in the oxygen carrier is used to provide reactive oxygen for methane activation, while the oxygen carrier promotes C–C long-chain growth to generate target products.…”

Section: Introductionmentioning

confidence: 99%

Plasma-Assisted Chemical Looping Oxidative Coupling of Methane over LaMnO₃ at 400 °C

Liu

Wang

et al. 2022

Energy Fuels

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Chemical looping oxidative coupling of methane (CLOCM) is a promising method for the direct conversion of methane to produce C 2+ hydrocarbons. However, high reaction temperatures (800−900 °C) are required to ensure high redox activity, leading to the server sintering of oxygen carriers. Here, we report plasma-assisted chemical looping oxidative coupling of methane and investigate its performance under mild conditions (100−400 °C). The results demonstrate that the plasma-assisted CLOCM reaction can be initiated at temperatures as low as 100 °C. Particularly, LaMnO 3 shows a high CH 4 conversion of 35.33% and a C 2+ yield of 12.26% at 400 °C. The performance merely decreased after 20 redox cycles. A mechanistic study implies that the high-performance results from plasma generate high-energy electrons (1−20 eV) to activate methane (4.3 eV) at low temperatures and to increase the electron vacancies on the surface of the oxygen carrier for binding oxygen species, inhibiting methane overoxidation. We hope that the promotion effect of plasma can be extended to enable more fuel conversion processes under mild conditions.

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Tailoring lattice oxygen triggered NiO/Ca9Co12O28 catalysts for sorption-enhanced renewable hydrogen production

Cited by 20 publications

References 59 publications

Reinforcing hydrogen and carbon nanotube co-production via Cr–O–Ni catalyzed methane decomposition

Reinforcing hydrogen and carbon nanotube co-production via Cr–O–Ni catalyzed methane decomposition

Modulating Mxene‐Derived Ni‐Mo_m‐Mo_2‐mTiC₂T_x Structure for Intensified Low‐Temperature Ethanol Reforming

Plasma-Assisted Chemical Looping Oxidative Coupling of Methane over LaMnO₃ at 400 °C

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Tailoring lattice oxygen triggered NiO/Ca9Co12O28 catalysts for sorption-enhanced renewable hydrogen production

Cited by 20 publications

References 59 publications

Reinforcing hydrogen and carbon nanotube co-production via Cr–O–Ni catalyzed methane decomposition

Reinforcing hydrogen and carbon nanotube co-production via Cr–O–Ni catalyzed methane decomposition

Modulating Mxene‐Derived Ni‐Mom‐Mo2‐mTiC2Tx Structure for Intensified Low‐Temperature Ethanol Reforming

Plasma-Assisted Chemical Looping Oxidative Coupling of Methane over LaMnO3 at 400 °C

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About

Modulating Mxene‐Derived Ni‐Mo_m‐Mo_2‐mTiC₂T_x Structure for Intensified Low‐Temperature Ethanol Reforming

Plasma-Assisted Chemical Looping Oxidative Coupling of Methane over LaMnO₃ at 400 °C