Non-thermal plasma assisted synthesis and physicochemical characterizations of Co and Cu doped Ni/Al2O3 nanocatalysts used for dry reforming of methane

Rahemi, Nader; Haghighi, Mohammad; Babaluo, Ali Akbar; Jafari, Mahdi Fallah; Khorram, Sirous

doi:10.1016/j.ijhydene.2013.08.084

Cited by 95 publications

(47 citation statements)

References 35 publications

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“…It is noteworthy that the sample possessed pore diameters greater than 2 nm revealing that it is mesoporous material. The prepared nanocatalyst has very high surface area, and two ways were proposed for influence of a higher surface area on the catalytic activity: (a) formation of the highly dispersed active phase; and (b) easy accessibility of the reactants to surfaces [44].…”

Section: Bet and Bjh Analysis Of Ctz-400 As The Best Catalystmentioning

confidence: 99%

Influence of calcination temperature on the activity of mesoporous CaO/TiO2–ZrO2 catalyst in the esterification reaction

2018

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In the present study, the effect of calcination temperature on the structure and performance of mesoporous CaO/TiO 2 -ZrO 2 catalyst fabricated by sol-gel method used in the esterification reaction was assessed. Then, CaO/TiO 2 catalyst was also synthesized via the same method to evaluate the effect of zirconia cations on its properties and activity. The samples were characterized by X-ray Diffraction (XRD), Fourier transmittance infra-red (FT-IR), Brunauer-Emmett-Teller (BET)-BarrettJoyner-Halenda (BJH), scanning electron microscope (SEM) and transmission electron microscopy (TEM) analyses. Moreover, Hammett indicator method was utilized to assess the acidity and basicity of the samples. It was found that zirconium was clearly incorporated in CaO/TiO 2 lattice and transformed that from amorphous phase to crystalline structure. In addition, the basicity and acidity of CaO/TiO 2 was clearly increased by zirconia loading. Evaluation of the samples' activity presented that CaO/TiO 2 catalyst exhibit no activity in the esterification reaction, while all CaO/TiO 2 -ZrO 2 catalysts showed high ability to convert oleic acid to its ester. Moreover, the catalyst calcined at 400 °C showed the highest activity in the esterification reaction with desirable properties such as high crystallinity, acidity, basicity and surface area along with well-distribution of particle size and pore size. The best catalyst converted around 90% of oleic acid to ester at optimized conditions of 150 °C, 12:1 molar ratio of methanol/oleic acid, 3 wt% of catalyst for 4 h of reaction time. Moreover, the sample was successfully used for five runs without significant reduction in activity that makes it a suitable choice as a catalyst for industrial applications.

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Section: Bet and Bjh Analysis Of Ctz-400 As The Best Catalystmentioning

confidence: 99%

Influence of calcination temperature on the activity of mesoporous CaO/TiO2–ZrO2 catalyst in the esterification reaction

2018

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“…Therefore, the synthesis method can improve the catalytic performance [2,4,10,11]. In recent researches, due to the drawbacks of conventional methods like impregnation, precipitation, sol-gel, and hydrothermal [12][13][14], the great attentions have been paid to utilize the modern methods such as sonochemical, plasma and microwave [1,2,4,11,15].…”

Section: Introductionmentioning

confidence: 99%

“…In recent researches, due to the drawbacks of conventional methods like impregnation, precipitation, sol-gel, and hydrothermal [12][13][14], the great attentions have been paid to utilize the modern methods such as sonochemical, plasma and microwave [1,2,4,11,15]. Particles size uniformity was very weak in impregnation and precipitation methods [16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…http Biogas reforming and dry reforming of methane (DRM) is a significant process for hydrogen and syngas production with H 2 /CO molar ratio of 1, which is the ideal ratio for production of oxygenated compounds and Fischer-Tropsch synthesis [18,26,31]. However, there are barriers against industrial application of DRM process like coke deposition, sintering of particles and spinel formation [2,11,26,[32][33][34][35][36]. Based on the past studies, zeolites can produce cobalt spinel because zeolites are porous, hydrated alumina-silicates and have potential to produce CoAl 2 O 4 and Co 2 SiO 4 at the suitable conditions [37,38].…”

Section: Introductionmentioning

confidence: 99%

“…Based on the past studies, zeolites can produce cobalt spinel because zeolites are porous, hydrated alumina-silicates and have potential to produce CoAl 2 O 4 and Co 2 SiO 4 at the suitable conditions [37,38]. Therefore, many studies focused on production of an active and stable catalyst at last decades [2,4,11,26,32,33,39,40].…”

Section: Introductionmentioning

confidence: 99%

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Dry reforming of methane over nanostructured Co/Y catalyst for hydrogen production: Effect of ultrasound irradiation and Co-loading on catalyst properties and performance

Abdollahifar

Haghighi

Sharifi

2015

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Unbounding the Future: Designing NiAl‐Based Catalysts for Dry Reforming of Methane

Zhang,

Zhao,

Song

et al. 2024

Chemistry An Asian Journal

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Dry reforming of methane (DRM), the catalytic conversion of CH4 and CO2 into syngas (H2 + CO), is an important process closely correlated to the environment and chemical industry. NiAl‐based catalysts have been reported to exhibit excellent activity, low cost, and environmental friendliness. At the same time, the rapid deactivation caused by carbon deposition, Ni sintering, and phase transformation exerts great challenges for its large‐scale applications. This review summarizes the recent advances in NiAl‐based catalysts for DRM, particularly focusing on the strategies to construct efficient and stable NiAl‐based catalysts. Firstly, the thermodynamics and elementary steps of DRM, including the activation of reactants and coke formation and elimination, are summarized. The roles of Al2O3 and its mixed oxides as the support, and the influences of the promoters employed in NiAl‐based catalysts over the DRM performance, are then illustrated. Finally, the design of anti‐coking and anti‐sintering NiAl‐based catalysts for DRM is suggested as feasible and promising by tailoring the structure and states of Ni and the modification of Al‐based supports including small Ni size, high Ni dispersion, proper basicity, strong metal‐support interaction (SMSI), active oxygen species as well as high phase stability.

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Non-thermal plasma assisted synthesis and physicochemical characterizations of Co and Cu doped Ni/Al2O3 nanocatalysts used for dry reforming of methane

Cited by 95 publications

References 35 publications

Influence of calcination temperature on the activity of mesoporous CaO/TiO2–ZrO2 catalyst in the esterification reaction

Influence of calcination temperature on the activity of mesoporous CaO/TiO2–ZrO2 catalyst in the esterification reaction

Dry reforming of methane over nanostructured Co/Y catalyst for hydrogen production: Effect of ultrasound irradiation and Co-loading on catalyst properties and performance

Unbounding the Future: Designing NiAl‐Based Catalysts for Dry Reforming of Methane

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