Improved calculations of pore size distribution for relatively large, irregular slit-shaped mesopore structure

Huang, Baiyu; Bartholomew, Calvin H.; Woodfield, Brian F.

doi:10.1016/j.micromeso.2013.10.008

Cited by 83 publications

(41 citation statements)

References 42 publications

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“…The isotherms present a hysteresis link of H3 type at relative pressures (P/P 0 ) from 0.45 to 0.98, indicating that the materials exhibit both micro-and mesoporous features with slit-shape geometry (Table 1) [16].…”

Section: Resultsmentioning

confidence: 99%

Hydrothermal Stability of Ru/SiO2–C: A Promising Catalyst for Biomass Processing through Liquid-Phase Reactions

et al. 2016

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Abstract:In this work, structural and morphological properties of SiO 2 -C composite material to be used as support for catalysts in the conversion of biomass-derived oxygenated hydrocarbons, such as glycerol, were investigated in liquid water under various temperatures conditions. The results show that this material does not lose surface area, and the hot liquid water does not generate changes in the structure. Neither change in relative concentrations of oxygen functional groups nor in Si/C ratio due to hydrothermal treatment was revealed by X-ray photoelectron spectroscopy (XPS) analysis. Raman analysis showed that the material is made of a disordered graphitic structure in an amorphous silica matrix, which remains stable after hydrothermal treatment. Results of the hydrogenolysis of glycerol using a Ru/SiO 2 -C catalyst indicate that the support gives more stability to the active phase than a Ru/SiO 2 consisting of commercial silica.

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Section: Resultsmentioning

confidence: 99%

Hydrothermal Stability of Ru/SiO2–C: A Promising Catalyst for Biomass Processing through Liquid-Phase Reactions

et al. 2016

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“…The BET surfer intrument consist of two components namely the analyzer and the sample preparation degasser. The catalyst sample was degassed at 573 K in a vacuum for 3 h. The pore volume and pore diameters were estimated from the desorption section of the N 2 adsorption-desorption isotherm using modeled derived by Barrett, Joyner and Halenda (BJH) (Huang et al, 2014). The crystallinity of the catalyst was obtained from XRD difractograms which were collected on a RIGAKU miniflex 600 diffractograms using Cu Kα (λ=0.154 nm) radiation.…”

Section: Methodsmentioning

confidence: 99%

Hydrogen Production From catalytic reforming of greenhouse gases (CO<sub>2</sub> and CH<sub>4</sub>) Over Neodymiun (III) oxide supported Cobalt catalyst

Bamidele¹,

Uchechukwu²,

Osariemen³

et al. 2017

Journal of Applied Sciences and Environmental Management

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ABSTRACT:Hydrogen production from CO2 reforming of methane over 20wt%.Co/Nd2O3 has been investigated in a fixed bed stainless steel reactor. The 20wt%.Co/Nd2O3 catalyst was synthesized using wet impregnation method and characterized for thermal stability, textural property, crystallinity, morphology and nature of chemical bonds using techniques such as TGA, XRD, N2 adsorption-desorption, FESEM, EDX and FTIR. The CO2 reforming of methane was performed at feed ratio (CH4:CO2) between 0.1-1 and reaction temperature ranged 973-1023 K. The catalyst displayed good activity towards selectivity and yield of hydrogen as well as CO, a by product. The selectivity and yield of Hydrogen increases with feed ratio and reaction temperature. The 20wt%.Co/Nd2O3 catalyst displayed promising catalytic activity for hydrogen production with the highest yield and selectivity of 32.5% and 17.6% respectively. © JASEM https://dx.doi.org/10.4314/jasem.v21i6.9

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“…Pore volume was measured by the single point method using P/P0 = 0.990. Pore size distribution was calculated using the desorption branch of the isotherm according to a newly developed slit pore-geometry model [41].…”

Section: Nitrogen Adsorption/desorptionmentioning

confidence: 99%

Effect of Support Pretreatment Temperature on the Performance of an Iron Fischer–Tropsch Catalyst Supported on Silica-Stabilized Alumina

et al. 2018

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Abstract:The effect of support material pretreatment temperature, prior to adding the active phase and promoters, on Fischer-Tropsch activity and selectivity was explored. Four iron catalysts were prepared on silica-stabilized alumina (AlSi) supports pretreated at 700 • C, 900 • C, 1100 • C or 1200 • C. Addition of 5% silica to alumina made the AlSi material hydrothermally stable, which enabled the unusually high support pretreatment temperatures (>900 • C) to be studied. High-temperature dehydroxylation of the AlSi before impregnation greatly reduces FeO·Al 2 O 3 surface spinel formation by removing most of the support-surface hydroxyl groups leading to more effectively carbided catalyst. The activity increases more than four-fold for the support calcined at elevated temperatures (1100-1200 • C) compared with traditional support calcination temperatures of <900 • C. This unique pretreatment also facilitates the formation of ε -Fe 2.2 C rather than χ-Fe 2.5 C on the AlSi support, which shows an excellent correlation with catalyst productivity.

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Improved calculations of pore size distribution for relatively large, irregular slit-shaped mesopore structure

Cited by 83 publications

References 42 publications

Hydrothermal Stability of Ru/SiO2–C: A Promising Catalyst for Biomass Processing through Liquid-Phase Reactions

Hydrothermal Stability of Ru/SiO2–C: A Promising Catalyst for Biomass Processing through Liquid-Phase Reactions

Hydrogen Production From catalytic reforming of greenhouse gases (CO<sub>2</sub> and CH<sub>4</sub>) Over Neodymiun (III) oxide supported Cobalt catalyst

Effect of Support Pretreatment Temperature on the Performance of an Iron Fischer–Tropsch Catalyst Supported on Silica-Stabilized Alumina

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