Temperature hysteresis in dry reforming of methane on Ni/SBA-15 catalyst: Low temperature activity originated from the synergy of Ni0 and carbon nanotubes

Wang, Shenghong; Wang, Ye; Yao, Lu; Hu, Changwei

doi:10.1016/j.apcatb.2023.122756

Cited by 17 publications

(6 citation statements)

References 52 publications

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“…For the olefin oligomerization reactions, the active sites of the NiHBET catalyst could be Brønsted-acid, Lewis-acid sites, and nickel ions. 29,42 Function of reactive oxygen species in Fe-HP biomass pretreatment process This work confirmed that the iron ion-catalyzed hydrogen peroxide pretreatment (Fe-HP pretreatment) can significantly improve the enzymatic hydrolysis, fermentation and jet-fuel synthesis using straw. Hydrogen peroxide is a highly active oxidant that may produce reactive oxygen species (ROS) and promote the biodegradation or deconstruction of lignocellulose.…”

Section: Influence Of Other Biomass Pretreatment Parameters On Enzymo...supporting

confidence: 57%

Iron ion catalyzed hydrogen peroxide pretreatment for bio‐jet fuel production from straw biomass

Zhu,

Zhang,

et al. 2024

J of Chemical Tech & Biotech

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BACKGROUNDThe development of efficient and green pretreatment pathway is of great significance for promoting biofuel production from lignocellulosic waste. The purpose of this work was to evaluate that iron ion‐catalyzed hydrogen peroxide pretreatment can be used as an environmentally friendly pretreatment way for bio‐jet fuel production using straw.RESULTSThe effects of iron ion‐catalyzed hydrogen peroxide pretreatment (Fe‐HP) on the enzymatic hydrolysis, fermentation and bio‐jet fuel production using straw were investigated. It was found that the iron ion‐catalyzed hydrogen peroxide pretreatment significantly improved the enzymatic hydrolysis and fermentation efficiency of straw biomass. Subsequently, the directional catalytic transformation of straw‐derived fermentation broth to bio‐jet fuels was achieved using a dual functional catalyst (HSAPO34/NiHBET). High conversion (94.9%) and good jet‐fuel selectivity (77.3%) were obtained in the conversion process of straw. On account of the biomass characterization and the analysis of reactive oxygen species during the Fe‐HP pretreatment, the role and mechanism of the Fe‐HP pretreatment was addressed.CONCLUSIONThe Fe‐HP pretreatment can be used as an environmentally friendly pretreatment way for jet fuel production from straw biomass. Fe‐HP pretreatment increased sugar yield and sugar concentration during enzymatic hydrolysis, which was beneficial for subsequent fermentation and bio‐jet fuel production. The reactive oxygen species take a prominent role in the Fe‐HP pretreatment of lignocellulose. © 2024 Society of Chemical Industry (SCI).

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Section: Influence Of Other Biomass Pretreatment Parameters On Enzymo...supporting

confidence: 57%

Iron ion catalyzed hydrogen peroxide pretreatment for bio‐jet fuel production from straw biomass

Zhu,

Zhang,

et al. 2024

J of Chemical Tech & Biotech

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“…They proved that the synergistic interaction between Mo 2 C nanoparticles and carbon layers is the primary source of electrocatalytic activity. Wang et al also found that the synergetic effect of metal and carbon nanotubes leads to the stable activity of Ni 0 [51]. Pores with larger sizes are favorable for adsorbing substrates, transferring intermediates, and desorbing products, especially for large-sized molecules.…”

Section: The Conversion Of Palmitic Acid Over Molybdenum Carbide Cata...mentioning

confidence: 98%

Regulating the Hydrodeoxygenation Activity of Molybdenum Carbide with Different Diamines as Carbon Sources

Zhou,

Yang,

et al. 2024

Catalysts

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The hydrodeoxygenation (HDO) of renewable fats or fatty acids into alkanes is a powerful measure to address energy and environmental crises. Molybdenum carbide-based catalysts are promising due to their platinum-like noble metal electronic properties. In this paper, Mo2C catalysts were prepared by one-step carbonization of amine molybdenum oxide (AMO) precursors using diamines with different carbon chain lengths as ligands. The physical and chemical properties and the HDO catalytic activity of the catalysts were investigated. The results indicate that as the carbon chain of diamines in the precursor increases, the carbon content of the catalysts in the surface and bulk phase increases. The Mo2C-12 catalyst exhibited excellent catalytic performance, with a palmitic acid conversion rate of 100% and an alkane selectivity of 96.6%, which are attributed to the smallest particle size, largest pore size, and synergistic effect of carbon. This work provides a simple and safe method for regulating the surface properties of Mo2C catalysts.

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“…However, the mechanism of its occurrence is still unclear. Wang et al [27] studied the hysteresis phenomenon of the Ni/SBA-15 catalyst in the DRM reaction and deeply analyzed the reasons and mechanisms behind this phenomenon (Figure 3). The ignition temperature (T ign ) is 425 • C, and the text temperature is 295 • C. At temperatures below T ign , the surface Ni 0 is oxidized to NiO by CO 2 or O in the support, making the reaction difficult to proceed.…”

Section: Catalyst Deactivation Mechanismmentioning

confidence: 99%

“…When the reaction temperature is higher than T ign , carbon nanotubes generated by methane cracking form a unique catalyst structure with surface Ni, which promotes the catalyst to still have catalytic activity at temperatures lower than T ign . When it is below Text (the activity decreases to 0% at Text), CH 4 cannot continue to reduce NiO, the cycle between the NiO and Ni is broken, and the catalyst is deactivated [27] (Figure 3).…”

Section: Catalyst Deactivation Mechanismmentioning

confidence: 99%

Research Progress on Stability Control on Ni-Based Catalysts for Methane Dry Reforming

Wei,

Shi

2024

Methane

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CO2 reforming of CH4 (DRM) utilizes the greenhouse gases of CH4 and CO2 to obtain the synthesis gas, benefiting the achievement of carbon neutrality. However, the deactivation of Ni-based catalysts caused by sintering and carbon deposition limits the industrial application. Focusing on stability improvement, this review first summarizes the reaction mechanism and deactivation mechanism in DRM and then discusses the impact of catalyst active components, supports, and interfacial structure. Finally, we propose the design direction of stable Ni-based catalysts towards DRM, providing guidance for the future development of catalysts suitable for industrial production.

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Temperature hysteresis in dry reforming of methane on Ni/SBA-15 catalyst: Low temperature activity originated from the synergy of Ni0 and carbon nanotubes

Cited by 17 publications

References 52 publications

Iron ion catalyzed hydrogen peroxide pretreatment for bio‐jet fuel production from straw biomass

Iron ion catalyzed hydrogen peroxide pretreatment for bio‐jet fuel production from straw biomass

Regulating the Hydrodeoxygenation Activity of Molybdenum Carbide with Different Diamines as Carbon Sources

Research Progress on Stability Control on Ni-Based Catalysts for Methane Dry Reforming

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