Highly active and stable Co3O4 catalyst for the Low-temperature oxidative dehydrogenation of propane

Wang, Lei; Ao, Chengcheng; Zhai, Yitong; Feng, Bo; Duan, Junrui; Qian, Shen‐En; Zhao, Wei; Zhang, Peng; Liu, Fuyi

doi:10.1016/j.inoche.2019.107725

Cited by 10 publications

(2 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The TEM images of Figure 2e,f also illustrate that The N 2 isotherms in Figure S2a belong to type IV with a typical H3-type hysteresis loop characterized by the inflection point B at a P/P 0 of 0.05−0.10 and adsorption hysteresis in the high-pressure region due to capillary condensation. 44 The bare CuO nanowire support has a higher BET specific surface area (9.72 m 2 g −1 ) than other catalysts containing various transition metals since the doped metals are dispersed on the nanowires in the form of agglomerated nanoparticles that occupy adsorption sites or block surface pores, leading to a decrease in surface area. 19,27 3.2.…”

Section: Resultsmentioning

confidence: 99%

Flame In Situ Synthesis of Metal-Anchored CuO Nanowires for CO Catalytic Oxidation and Kinetic Analysis

Wang

et al. 2021

ACS Appl. Energy Mater.

Self Cite

View full text Add to dashboard Cite

Flame in situ synthesis is regarded as a facile technique to fabricate onedimensional (1D) nanomaterials with the advantages of simple operation, shorter duration, and scale production. This work reports the flame synthesis of transition metal (Ce,Fe)anchored CuO nanowires on a copper substrate for CO catalytic oxidation. Thermal compressive stresses encourage the CuO nanowires to grow vertically along the grain boundaries, and the metal oxides are nucleated and embedded along the nanowires due to pyrolysis. We examined the catalytic performance of the as-grown catalysts toward CO oxidation, and the results showed that the CeFe-Cu catalyst exhibits outstanding activity near full conversion at 180 °C. With a reaction rate per unit mass of 1.38 mol g cat −1 s −1 and activation energy of 43.54 kJ mol −1 , the high activity of the CeFe-Cu catalyst benefits from the synergistic effects of Ce-Fe incorporation. Furthermore, the CeFe-Cu catalyst displays stable cycling performance over five runs and excellent stability in isothermal long-term catalysis tests at 140 °C. Kinetic analysis gives the rate equations for CO oxidation over the Ce-Cu, Fe-Cu, and CeFe-Cu catalysts and reveals the influential role of chemisorbed CO and lattice oxygen in the reaction. The catalytic oxidation of CO undergoes two reduction−oxidation steps as corroborated by the Mars Van Krevelen (MVK) model, and oxygen vacancies are crucial to facilitating the deep oxidation of CO, as confirmed by XPS. Meanwhile, combined with in situ Raman analysis, a reasonable mechanism is proposed. This work provides a fast method of designing 1D hybrid nanostructures for the abatement of carbon monoxide from exhaust gas emissions.

show abstract

Section: Resultsmentioning

confidence: 99%

Flame In Situ Synthesis of Metal-Anchored CuO Nanowires for CO Catalytic Oxidation and Kinetic Analysis

Wang

et al. 2021

ACS Appl. Energy Mater.

Self Cite

View full text Add to dashboard Cite

show abstract

“…[16][17][18][19][20][21] Among these new non-precious and nontoxic metal catalysts, the environmental friendly cobalt-based catalysts have attracted much attention due to their high activity in CÀ H bond activation of alkanes and selectivity for olefin products. [22][23][24][25][26][27][28] However, there is still coke existing for these catalysts during the reaction process even under the protection of hydrogen, and the Al 2 O 3 materials with strong acidity is commonly used as the support of the active metal species, which will easily induce the dissociation of CÀ C bond in propane and generate undesirable side products during the high temperature reaction process. [29] Therefore, it is necessary to find a proper way to overcome these problems.…”

Section: Introductionmentioning

confidence: 99%

Efficient Non‐Precious Metal Catalyst for Propane Dehydrogenation: Atomically Dispersed Cobalt‐nitrogen Compounds on Carbon Nanotubes

et al. 2021

View full text Add to dashboard Cite

A hybrid catalyst comprising atomically dispersed cobalt-nitrogen compounds anchoring on oxidized carbon nanotubes (OCNTs) is prepared and applied in propane dehydrogenation (PDH) reactions. The proposed non-precious catalyst exhibits high initial conversion (~20 %) and excellent selectivity of propene (> 95 %), which is superior to those of metal-free nanocarbon and some metal-based catalysts. The chemical composition and structure of the proposed hybrid catalysts are elucidated by a series of characterizations and control experiments with a single component. These characterization results combined with the kinetic analysis indicate that the catalytic activity mainly originates from the cobalt-nitrogen (CoÀ N) species supported on the OCNT surface. The present work sheds light on the structure-function relationships of CoN catalysts, paving the way to develop nonprecious catalysts for PDH reactions.

show abstract

A step forward in the preparation of V–Mg–O catalysts for oxidative dehydrogenation of propane

Vedyagin

Mishakov

Ilyina

2020

J Sol-Gel Sci Technol

View full text Add to dashboard Cite

Highly active and stable Co3O4 catalyst for the Low-temperature oxidative dehydrogenation of propane

Cited by 10 publications

References 36 publications

Flame In Situ Synthesis of Metal-Anchored CuO Nanowires for CO Catalytic Oxidation and Kinetic Analysis

Flame In Situ Synthesis of Metal-Anchored CuO Nanowires for CO Catalytic Oxidation and Kinetic Analysis

Efficient Non‐Precious Metal Catalyst for Propane Dehydrogenation: Atomically Dispersed Cobalt‐nitrogen Compounds on Carbon Nanotubes

A step forward in the preparation of V–Mg–O catalysts for oxidative dehydrogenation of propane

Contact Info

Product

Resources

About