Facile synthesis of palladium incorporated NiCo2O4 spinel for low temperature methane combustion: Activate lattice oxygen to promote activity

Wang, Ting; Qiu, Lishushi; Li, Haiyan; Zhang, Chao; Sun, Yuanmiao; Xi, Shibo; Ge, Jingjie; Xu, Zhichuan J.; Wang, Chuan

doi:10.1016/j.jcat.2021.10.018

Cited by 32 publications

(25 citation statements)

References 57 publications

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Section: Catalystsmentioning

confidence: 99%

“…Various bimetallic catalysts exhibited higher stability than Pd catalysts in the presence of water vapor and showed stability after a long process of mild aging treatment. 60,63,69,140−142 Some special structures showed superior water-resistant ability, including Pd-NiCo 2 O 4 catalyst with Pd inserted into the NiCo 2 O 4 lattice, 143 Pt-Pd/CeO 2 bimetallic catalyst prepared by ballmilling with mushroom-like structure of Pt-Pd phase in the aged catalyst, 140 and Pd catalysts encapsuled in a core−shell structure. 144,145 Addition of extra water adsorbent was also a method to enhance water resistance.…”

Section: H 2 Omentioning

confidence: 99%

“…Note that some extra active sites could be generated via interactions between active sites and the support. − Xiong et al investigated Pd-Co 2 MO 4 catalysts (M = Mn, Co, and Al) with Pd incorporated into MCo 2 O 4 spinel. The range of catalytic activity for methane combustion was Pd-Co 2 MnO 4 > Pd-Co 3 O 4 > Co 2 MnO 4 > Co 3 O 4 ≫ Pd-Co 2 AlO 4 ≈ Co 2 AlO 4 .…”

Section: Catalystsmentioning

confidence: 99%

“…This difference originated from the different extent of lattice distortion caused by Pd doping and thus led to variations in both active surface oxygen and the Pd-PdO redox cycle. Wang et al also discovered that the embedded Pd species in NiCo 2 O 4 facilitated the formation and exposure of more Co 3+ species in the spinel, which became extra active species for catalytic combustion of methane.…”

Section: Catalystsmentioning

confidence: 99%

“…Meanwhile, some preparation methods also changed the way that active compounds loaded on the supports. Wang et al investigated the synthesis of Pd-NiCo 2 O 4 via a one-pot thermal decomposition method with Pd embedded in the lattice of NiCo 2 O 4 spinel for catalytic combustion of methane (Figure ). It was found that Pd partly inserted into the spinel structure of NiCo 2 O 4 via substituting octahedrally coordinated Ni 3+ and Co 3+ species, which made the O p-band center closer to the Fermi level and weakened the blockage of active NiCo 2 O 4 sites.…”

Section: Catalystsmentioning

confidence: 99%

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Catalytic Combustion of Methane: From Mechanism and Materials Properties to Catalytic Performance

et al. 2022

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Catalytic combustion of methane is a promising way of eliminating fugitive methane emissions to meet the rising requirement of the wide application of natural gas vehicles. The performance of catalysts for methane combustion has been found to be significantly affected by the variety of lattice defects, oxygen vacancies, and metal−support interactions which are connected with the category, morphology, and crystal type of both active components and supports. Choices of additives and preparation methods also play important roles in the catalytic combustion of methane. In this Review, we highlight the recent progress in the development and understanding of catalytic combustion of methane. Distinct mechanisms regarding catalytic combustion of methane, including the Langmuir−Hinshelwood mechanism, the Eley−Rideal mechanism, and the Mars−van Krevelen mechanism, are first discussed. The effects of active components, supports, additives, and preparation methods on the properties of catalysts for methane combustion are then analyzed. From a practical point of view, the effects of the components of exhaust gas, which include carbon dioxide, water, sulfur compounds, and nitrogencontaining compounds, are also discussed. Finally, we provide a summary regarding the current situation and future prospects for the catalytic combustion of methane.

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Section: Catalystsmentioning

confidence: 99%

Section: H 2 Omentioning

confidence: 99%

Section: Catalystsmentioning

confidence: 99%

Section: Catalystsmentioning

confidence: 99%

Section: Catalystsmentioning

confidence: 99%

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Catalytic Combustion of Methane: From Mechanism and Materials Properties to Catalytic Performance

et al. 2022

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Photodriven Methane Conversion on Transition Metal Oxide Catalyst: Recent Progress and Prospects

Wang,

Shi,

Zhao

et al. 2023

Advanced Science

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Methane as the main component in natural gas is a promising chemical raw material for synthesizing value‐added chemicals, but its harsh chemical conversion process often causes severe energy and environment concerns. Photocatalysis provides an attractive path to active and convert methane into various products under mild conditions with clean and sustainable solar energy, although many challenges remain at present. In this review, recent advances in photocatalytic methane conversion are systematically summarized. As the basis of methane conversion, the activation of methane is first elucidated from the structural basis and activation path of methane molecules. The study is committed to categorizing and elucidating the research progress and the laws of the intricate methane conversion reactions according to the target products, including photocatalytic methane partial oxidation, reforming, coupling, combustion, and functionalization. Advanced photocatalytic reactor designs are also designed to enrich the options and reliability of photocatalytic methane conversion performance evaluation. The challenges and prospects of photocatalytic methane conversion are also discussed, which in turn offers guidelines for methane‐conversion‐related photocatalyst exploration, reaction mechanism investigation, and advanced photoreactor design.

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Interfacial Electron Engineering of PdSn‐NbN/C for Highly Efficient Cleavage of the C–C Bonds in Alkaline Ethanol Electrooxidation

Ye,

Sheng,

Zhang

et al. 2023

Small

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The splitting of the C–C bonds of ethanol remains a key issue to be addressed, despite tremendous efforts made over the past several decades. This study highlights the enhancement mechanism of inexpensive NbN‐modified Pd1Sn3‐NbN/C towards the C–C bonds cleavage for alkaline ethanol oxidation reaction (EOR). The optimal Pd1Sn3‐NbN/C delivers a catalytic activity up to 43.5 times higher than that of commercial Pd/C and high carbonate selectivity (20.5%) toward alkaline EOR. Most impressively, the Pd1Sn3‐NbN/C presents good durability even after 25 200 s of chronoamperometric testing. The enhanced catalytic performance is mainly due to the interfacial interaction between PdSn and NbN, demonstrated by multiple structural characterization results. In addition, in situ ATR‐SEIRAS (Attenuated total reflection‐surface enhanced infrared absorption spectroscopy) results suggest that NbN facilitates the C–C bonds cleavage towards the alkaline EOR, followed by the enhanced OH adsorption to promote the subsequent oxidation of C1 intermediates after doping Sn. DFT (density functional theory) calculations indicate that the activation barriers of the C–H bond cleavage in CH3CH2OH, CH3CHOH, CH3CHO, CH3CO, CH2CO, and the C–C bond cleavage in CH3CO, CH2CO, CHCO are evidently reduced and the removal of adsorbed CH3CO and CO becomes easier on the PdSn‐NbN/C catalyst surface.

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Facile synthesis of palladium incorporated NiCo2O4 spinel for low temperature methane combustion: Activate lattice oxygen to promote activity

Cited by 32 publications

References 57 publications

Catalytic Combustion of Methane: From Mechanism and Materials Properties to Catalytic Performance

Catalytic Combustion of Methane: From Mechanism and Materials Properties to Catalytic Performance

Photodriven Methane Conversion on Transition Metal Oxide Catalyst: Recent Progress and Prospects

Interfacial Electron Engineering of PdSn‐NbN/C for Highly Efficient Cleavage of the C–C Bonds in Alkaline Ethanol Electrooxidation

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