Ni-SBA-15 Catalysts for Production of Hydrogen and Carbon Nanotubes

Srilatha, K.; Viditha, V.; Himabindu, V.

doi:10.1016/j.matpr.2015.10.069

Cited by 9 publications

(3 citation statements)

References 11 publications

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“…The pore size distribution depicted a well-defined peak for the catalyst and SBA-15 at similar pore diameter. This confirms that the pore network of the mesoporous SBA-15 is maintained after Ni-Bi metal oxide impregnation. , …”

Section: Resultsmentioning

confidence: 99%

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Oxidative Dehydrogenation of n-Butenes to 1,3-Butadiene over Ni-BiO_x Metal Oxides Supported on Mesoporous SBA-15

Tanimu

Al-Qathmi

Aitani

et al. 2023

Ind. Eng. Chem. Res.

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A Ni-BiO x /SBA-15 catalyst synthesized using a co-impregnation method was utilized for the oxidative dehydrogenation (ODH) of n-butenes (1butene and 2-butene) to 1,3-butadiene in a fixed-bed reactor. The layered structure of NiO/β-Bi 2 O 3 /Bi 2 SiO 5 /SBA-15 was confirmed using porosity, XRD, and H 2 -TPR measurements. The components of the structure interacted moderately to form an effectively active and selective NiO species as an ODH catalyst. Thermodynamic analysis results revealed the most favorable pathway for butene conversion; however, this catalyst kinetically favored the desired and efficient route of butene conversion via adsorption of butenes, abstraction of αhydrogen, and the formation of highly selective 1,3-butadiene. The selectivity of the oxygen species in the metal oxide system along the efficient route was sustained by co-feeding gas phase oxygen and increasing the reaction temperature. The catalyst comprising 14 wt % Ni-10 wt % Bi-O/SBA-15 exhibited a 2-butene conversion of 83% and a 1,3-butadiene selectivity of 89% at 400 °C and O 2 /C 4 = ratio = 4.0 mol/mol.

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Section: Resultsmentioning

confidence: 99%

“…This confirms that the pore network of the mesoporous SBA-15 is maintained after Ni-Bi metal oxide impregnation. 23,24 Furthermore, the PSD was divided into three sections to prudently study the influence of Ni and Bi loading on the SBA-15 support. The pore properties for SBA-15 and 14Ni-10Bi-O/ SBA-15 are shown in Table 2.…”

Section: Catalystmentioning

confidence: 99%

Oxidative Dehydrogenation of n-Butenes to 1,3-Butadiene over Ni-BiO_x Metal Oxides Supported on Mesoporous SBA-15

Tanimu

Al-Qathmi

Aitani

et al. 2023

Ind. Eng. Chem. Res.

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“…Compared with previous studies, the NiO catalyst prepared by this method achieved the maximum hydrogen yield (67%) at 900 C. In addition, the carbon products collected on NiO and Fe 2 O 3 catalysts were carbon nano chunks and multilayer graphene sheets, respectively. Srilatha et al 29 used SBA-15 as a catalyst support and investigated the influence of different Ni loading levels and reaction times on the hydrogen yield of methane decomposition. Their results showed that the hydrogen yield was low for Ni loadings above 50% and reaction time below 2 hours.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous production of hydrogen and carbon nanotubes from cracking of a waste cooking oil model compound over Ni‐Co / SBA ‐15 catalysts

Liu

2020

Int J Energy Res

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Hydrogen is considered an ideal energy carrier. However, the use of fossil fuels to produce hydrogen depletes natural resources and causes environmental problems. Therefore, there is an urgent need to find alternative raw materials and technologies for the production of hydrogen. Waste cooking oil (WCO) is a renewable energy source that has emerged as a potential raw material for hydrogen production. This study describes the production of hydrogen and carbon nanotubes (CNTs) by catalytic cracking of a WCO model compound (WCOMC) performed in a lab-scale fixed bed using Ni-Co/SBA-15 catalysts. The phase, structure and reduction properties of the catalyst were analysed by using different characterisation methods. The effects of the nickel-cobalt metal content and the reaction temperature on both the hydrogen production and the quality of the CNTs were investigated. The deposited carbonaceous products were characterised to analyse their external appearance, internal structure, oxidation stability and graphitisation degree. The results indicated that the catalyst containing 20% Ni and 30% Co showed the highest activity. When reaction temperature was 800 C, the instantaneous volume fraction of hydrogen was close to 43.5 vol% and the content of hydrogen in the gas product was close to 66.5 vol%. A few multi-walled CNTs having a small diameter and some CNTs with an open-topped structure were deposited on 10%Ni-40%Co/SBA-15 and 30%Ni-20%Co/SBA-15, respectively. Thermogravimetric analysis and Raman spectroscopic analysis indicated that all CNTs showed high oxidation stability and a high degree of graphitisation.

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0D, 1D, 2D, and 3D Soft and Hard Templates for Catalysis

Bütün¹,

Demirci²,

Yasar³

et al. 2017

Studies in Surface Science and Catalysis

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Ni-SBA-15 Catalysts for Production of Hydrogen and Carbon Nanotubes

Cited by 9 publications

References 11 publications

Oxidative Dehydrogenation of n-Butenes to 1,3-Butadiene over Ni-BiO_x Metal Oxides Supported on Mesoporous SBA-15

Oxidative Dehydrogenation of n-Butenes to 1,3-Butadiene over Ni-BiO_x Metal Oxides Supported on Mesoporous SBA-15

Simultaneous production of hydrogen and carbon nanotubes from cracking of a waste cooking oil model compound over Ni‐Co / SBA ‐15 catalysts

0D, 1D, 2D, and 3D Soft and Hard Templates for Catalysis

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Ni-SBA-15 Catalysts for Production of Hydrogen and Carbon Nanotubes

Cited by 9 publications

References 11 publications

Oxidative Dehydrogenation of n-Butenes to 1,3-Butadiene over Ni-BiOx Metal Oxides Supported on Mesoporous SBA-15

Oxidative Dehydrogenation of n-Butenes to 1,3-Butadiene over Ni-BiOx Metal Oxides Supported on Mesoporous SBA-15

Simultaneous production of hydrogen and carbon nanotubes from cracking of a waste cooking oil model compound over Ni‐Co / SBA ‐15 catalysts

0D, 1D, 2D, and 3D Soft and Hard Templates for Catalysis

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Product

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Oxidative Dehydrogenation of n-Butenes to 1,3-Butadiene over Ni-BiO_x Metal Oxides Supported on Mesoporous SBA-15

Oxidative Dehydrogenation of n-Butenes to 1,3-Butadiene over Ni-BiO_x Metal Oxides Supported on Mesoporous SBA-15