Effect of support materials on the performance of Ni-based catalysts in tri-reforming of methane

Kumar, Rohit; Kumar, K.D.P. Lakshmee; Choudary, Nettem V.; Pant, Kamal Kishore

doi:10.1016/j.fuproc.2018.12.018

Cited by 87 publications

(60 citation statements)

References 54 publications

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“…The samples were then stable between 90-300 °C before disintegration and weigh loss occurred rabidly between 300-400 °C. The results of TGA obtained in our study were in good agreement of those reported in Bhatt 29 and Kumar 22 . In the case of SIFSIX-3-Ni, steep degradation and mass loss occurred at a lower temperature compared to the two other sorbents namely at 245 °C.…”

Section: Ftir Ftir Spectroscopy Assists In Understanding the Interacsupporting

confidence: 92%

“…After this temperature, decomposition of the residual template on the wall surface can take place. Kumar 22,28 reported similar trends for SIFSIX-3-Ni and showed that the samples were stable around a temperature of 250 °C after 10% initial weight change.…”

Section: Ftir Ftir Spectroscopy Assists In Understanding the Interacmentioning

confidence: 68%

“…Such properties are significant in the understanding of the interactions and separation applications of such materials amongst other properties such as the chemical structure. Accordingly, a large number of studies reported on the control of the porous structure of such sorbents via different synthesis routes, physical and chemical alterations of the structure 21,22,24,30,31 . Figure 6(a) shows indicated a type I IUPAC classification indicating a dominant microporous structure 32 compared to a classical IV shaped isotherm for the SBA-15 sorbent.…”

Section: Ftir Ftir Spectroscopy Assists In Understanding the Interacmentioning

confidence: 99%

“…SIFSIX-3-Ni has been reported to have excellent CO 2 removal, stability up to 80% relative humidity and in the presence of other sour gases such as H 2 S. All such activity has been investigated at trace CO 2 concentrations (400 ppm) and low pressures not exceeding 1 bar. NbOFFIVE-1-Ni has also been reported to have superior CO 2 uptakes 27.6 cm 3 g −1 at low CO 2 concentration and system pressures not exceeding 3 mbar 22 .…”

mentioning

confidence: 99%

“…It is evident that a new generation of physisorbents are urgently needed to address the carbon capture applications. Hybrid ultramicroscopic materials have emerged thanks to a crystal engineering approach that enabled systematic study of a previously underexplored class of physisorbents 21,22 . Moreover, they can be synthesized from very cheap starting organic ligands (e.g.…”

mentioning

confidence: 99%

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Solid Sorbents as a Retrofit Technology for CO2 Removal from Natural Gas Under High Pressure and Temperature Conditions

Khraisheh

Almomani

Walker

2020

Sci Rep

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The capture of CO2 under high pressure and temperature is challenging and is required in a number for industrial applications including natural gas processing. In this work, we examine the use of benchmark hybrid ultraporous materials HUMs for their potential use in CO2 adsorption processes under high-pressure conditions, with three varying temperatures (283, 298 and 318 K). NbOFFOVE-1-Ni and SIFSIX-3-Ni were the selected HUMs given their established superior CO2 capacity under low pressure (0–1 bar). Both are microporous with highly ordered crystalline structures as compared to the mesoporous hexagonal silica (Santa Barbara Anhydrous-15 (SBA-15)). SBA-15 was previously tested for both low and high-pressure applications and can serve as a benchmark in this study. Sorbent characterization using XRD, SEM, FTIR and N2 adsorption were conducted to assure the purity and structure of the sorbents. TGA analysis were conducted to establish the thermal stability of the sorbents under various temperatures. High-pressure CO2 adsorption was conducted from 0–35 bar using magnetic suspension balance (Rubotherm). Although the SBA-15 had the highest surface (527 m3/g) are of the three adsorbents, the CO2 adsorption capacity (0.42 mmol/g) was an order of magnitude less than the studies HUMs with SIFSIX-3-Ni having 2.6 mmol/g, NbOFFIVE-1-Ni achieving 2.5 mmol/g at 298 K. Multistage adsorption isotherms were obtained at different pressures. In addition, results indicate that electrostatics in HUMs are most effective at improving isosteric heat of adsorption Qst and CO2 uptake. Higher temperatures had negative effect on adsorption capacity for the HUMs and SBA-15 at pressures between 7–9 bar. In SAB-15 the effect of temperature is reversed in what is known as a cross over phenomena.

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Section: Ftir Ftir Spectroscopy Assists In Understanding the Interacsupporting

confidence: 92%

Section: Ftir Ftir Spectroscopy Assists In Understanding the Interacmentioning

confidence: 68%

Section: Ftir Ftir Spectroscopy Assists In Understanding the Interacmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Solid Sorbents as a Retrofit Technology for CO2 Removal from Natural Gas Under High Pressure and Temperature Conditions

Khraisheh

Almomani

Walker

2020

Sci Rep

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Development of a Trireforming Fluidized‐Bed Reactor with a Hydrogen Permselective Membrane

Osat

Shojaati

2022

Chem Eng & Technol

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Three models were developed for a conventional fluidized‐bed reactor and a cocurrent and a countercurrent membrane fluidized‐bed reactor for methane trireforming. Firstly, the effects of the operating parameters on the reactor performance were assessed. Then, a single‐objective optimization was established. Finally, a membrane was added to the reactor to improve the reactor performance. The simulated results illustrate that the reaction rates are highest near the reactor entrance due to the high volume fraction of the dispersed phase and the existence of a hot zone. Moreover, the optimization process indicates that the maximum H2 yield in the conventional fluidized‐bed reactor is obtained when the inlet temperature, inlet flow rate, and H2O/CH4 ratio, are 804 °C, 3.6 × 105 L h−1, and 2.5, respectively.

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Synthesis of Novel Catalysts for Carbon Dioxide Conversion to Products of Value

Okonkwo

Biswas

2021

Catalysis for Clean Energy and Environmental Sustainability

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Effect of support materials on the performance of Ni-based catalysts in tri-reforming of methane

Cited by 87 publications

References 54 publications

Solid Sorbents as a Retrofit Technology for CO2 Removal from Natural Gas Under High Pressure and Temperature Conditions

Solid Sorbents as a Retrofit Technology for CO2 Removal from Natural Gas Under High Pressure and Temperature Conditions

Development of a Trireforming Fluidized‐Bed Reactor with a Hydrogen Permselective Membrane

Synthesis of Novel Catalysts for Carbon Dioxide Conversion to Products of Value

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