Enhanced Methane Reforming Activity of a Hydrothermally Synthesized Codoped Perovskite Catalyst

Khazaal, Majida Hameed; Staniforth, John Z.; Alfatlawi, Zainab A.; Ormerod, R. Mark; Darton, Richard J.

doi:10.1021/acs.energyfuels.8b02848

Cited by 15 publications

(13 citation statements)

References 25 publications

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“…However, very high temperature will lead to secondary polymerization. This phenomenon is similar to the effect of temperature on syringaldehyde yield in the ionic liquid system. − The lignin conversion system reaches the best temperature of 160 °C. The yields of other products in the reaction are shown in Table .…”

Section: Resultssupporting

confidence: 66%

Preparation of Syringaldehyde from Lignin by Catalytic Oxidation of Perovskite-Type Oxides

Zhu

Zhang

et al. 2020

ACS Omega

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The influence of different reaction conditions on the yield of syringaldehyde was studied by using perovskite oxide as the catalyst. The optimal reaction conditions are as follows: 0.60 g of dealkali lignin, 0.60 g of 5 wt % theta ring-loaded LaFe 0.2 Cu 0.8 O 3 catalyst, 30 mL of 1.0 mol/L NaOH solution, 160 °C reaction temperature, 0.80 MPa O 2 pressure, and 2.5 h reaction time. Under these conditions, the highest syringaldehyde yield was 10.00%. The recycling performance of the catalyst was studied. It was found by XRD analysis that the catalyst maintained high catalytic activity after four times of use.

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Section: Resultssupporting

confidence: 66%

Preparation of Syringaldehyde from Lignin by Catalytic Oxidation of Perovskite-Type Oxides

Zhu

Zhang

et al. 2020

ACS Omega

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“…On the other hand, the modification of the catalyst can achieve the purpose of reducing or not forming carbon deposition from the point of view of kinetics. 122,123 Alloying the active metal with another metal has been an effective way of improving the catalyst stability. 124 2.3.…”

Section: Basics Of Dry Reforming Of Methanementioning

confidence: 99%

Optimization of Ni-Based Catalysts for Dry Reforming of Methane via Alloy Design: A Review

Huang

Tian

et al. 2022

Energy Fuels

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The dry reforming of methane (DRM) reaction, which converts two greenhouse gases, CO 2 and CH 4 , into valuable syngas, offers a promising route to carbon sequestration. Nibased catalysts have been widely used for DRM due to the high activity, low cost, and high feasibility. Nevertheless, the rapid deactivation of Ni-based catalysts caused by carbon deposition and/or active metal sintering is the main drawback for large-scale application. In addition, its high energy demand poses additional difficulties due to the heat-absorbing nature of the reaction. The design of bimetallic alloy catalysts has been considered as an effective strategy to improve the activity and stability of Ni-based catalysts. This paper reviews recent advances in Ni-based bimetallic catalysts for DRM processes, which mainly focus on the synergistic effects of the two elements, the role of the second metal, and the reaction mechanism induced by different active species. Finally, the outlook for the development of high-performance catalysts for DRM is proposed. The discussions in the present work may provide helpful information to researchers in the CO 2 conversion fields to optimize catalyst design.

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“…With the increasing potential reserves proven, methane (CH 4 ) conversion and utilization have gradually been given great attention to lab research and industrial applications. − However, the efficient activation of CH 4 remains a great challenge as a result of the high bond energy (439 kJ mol –1 ) and low polarizability of C–H bonds. Nowadays, the main industrial utilization of CH 4 is for hydrogen production, including high-temperature steam methane reforming at 700–1000 °C (SMR, CH 4 + H 2 O → 3H 2 + CO; Δ H 298 K = +206 kJ mol –1 ) and the subsequent low-temperature water–gas shift reaction below 300 °C (CO + H 2 O → H 2 + CO 2 ; Δ H 298 K = −41 kJ mol –1 ). , Although low-temperature steam reforming technologies based on alcohols (methanol, ethanol, and glycerol) have been reported, − a vast majority of current industrial hydrogen is still produced through the high-temperature SMR route as a result of the abundant reserves of methane. , High reaction temperatures will lead to massive energy inputs and carbon-deposition-induced deactivation through side reactions. − The development of advanced SMR driven by sustainable energy inputs at mild conditions has become a current research hotspot.…”

Section: Introductionmentioning

confidence: 99%

Light-Driven Hydrogen Production from Steam Methane Reforming via Bimetallic PdNi Catalysts Derived from Layered Double Hydroxide Nanosheets

et al. 2022

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Steam methane reforming is one of the primary industrial hydrogen sources but depends upon high temperatures to activate the inert C−H bonds in methane, motivating novel methods to achieve more sustainable methane activation and hydrogen production. Here, we prepared a PdNi bimetallic catalyst derived from layered double hydroxides for light-driven steam methane reforming, achieving a hydrogen production rate of 82.9 mmol g −1 h −1 at 300 °C under xenon lamp illumination. Outdoor condensed sunlight irradiation further delivered a hydrogen production rate of up to 260.9 mmol g −1 h −1 . Both temperature-programmed desorption and density functional theory calculations indicated that Pd doping enhances the adsorption and activation of inert methane molecules, promoting hydrogen production via the reforming process. These results provide a reference for the direct utilization of solar energy to produce hydrogen from earth-abundant natural gas and water sources.

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Enhanced Methane Reforming Activity of a Hydrothermally Synthesized Codoped Perovskite Catalyst

Cited by 15 publications

References 25 publications

Preparation of Syringaldehyde from Lignin by Catalytic Oxidation of Perovskite-Type Oxides

Preparation of Syringaldehyde from Lignin by Catalytic Oxidation of Perovskite-Type Oxides

Optimization of Ni-Based Catalysts for Dry Reforming of Methane via Alloy Design: A Review

Light-Driven Hydrogen Production from Steam Methane Reforming via Bimetallic PdNi Catalysts Derived from Layered Double Hydroxide Nanosheets

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