Fe–Ce–Al Catalysts for Decomposition of Methane to High Purity Hydrogen and High-Value Carbon DOI
Dwi Hantoko, Wasim Ullah Khan, Aprizon Putra

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2024, Volume and Issue: 63(44), P. 18869 - 18878

Published: Oct. 28, 2024

Catalytic methane decomposition is a promising technique for COx-free hydrogen production and carbon nanomaterials. In this research, iron-supported catalysts, prepared by successive wetness impregnation, were studied at 700 °C. The results showed that Fe0 turned out to be the active site greater metal–support interaction led formation of iron aluminate (FeAl2O4), both which played role in catalytic activity performance. 30Fe/Ce–Al catalyst performed best terms maximum conversion (76%) rate (1.04 mol/gMetal/s/surface area). observation also suggested 10Fe/Ce–Al significantly deactivated due metal particle agglomeration, as evidenced negligible weight loss thermogravimetric analysis. contrast, 20Fe/Ce–Al catalysts from agglomeration deposition. surface morphology analysis spent indicated deposited was multiwalled nanotubes followed base-growth mechanism.

Language: Английский

Development of a novel method to synthesize Ni/SiO2.MgO catalysts using EDTA as a chelating agent for the methane decomposition process DOI

Shahla Karimi,

Fereshteh Meshkani, Mehran Rezaei

et al.

Powder Technology, Journal Year: 2024, Volume and Issue: 443, P. 119896 - 119896

Published: May 21, 2024

Language: Английский

Citations

22
The effect of catalyst particle size and temperature on CNT growth on supported Fe catalysts during methane pyrolysis DOI Creative Commons

Jing Shen,

Jason S. Olfert,

Ehsan Abbasi-Atibeh

et al.

Catalysis Today, Journal Year: 2025, Volume and Issue: unknown, P. 115275 - 115275

Published: March 1, 2025

Language: Английский

Citations

2
Co-Ni on zirconia and titania catalysts for methane decomposition to hydrogen and carbon nanomaterials: The role of metal-support interactions DOI
Wasim Ullah Khan, Dwi Hantoko, Idris A. Bakare

et al.

Fuel, Journal Year: 2024, Volume and Issue: 369, P. 131675 - 131675

Published: April 15, 2024

Language: Английский

Citations

12
Catalytic Hydrothermal Liquefaction of Grape Pomace Using Ni–ZrO2–MSS and Ni–HZSM5 in a Water–Crude Glycerol Cosolvent DOI Creative Commons
Shahin Mazhkoo,

Omid Norouzi,

Omid Pourali

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: unknown

Published: March 23, 2025

This study focused on the catalytic hydrothermal liquefaction (HTL) of grape pomace using Ni–HZSM5 and Ni–ZrO2–modified steel slag (MSS) catalysts, employing a water-crude glycerol cosolvent. The research aimed to understand how temperature, solvent ratios, crude composition affect biocrude yield properties, evaluate stability regenerated catalysts. results revealed that when fatty acids/glycerides-rich was used, highest 76 wt %, HHV 41 MJ/kg, H/C ratio 1.81, energy recovery 90.9% achieved at 320 °C with 75% concentration in Catalytic HTL significantly reduced acid content by 44%. Although Ni–ZrO2–MSS increased from 44.07 49.97 it promoted production acids esters biocrude. TGA refinery cut showed both catalysts enhance diesel production, yielding fraction (41.24%) compared (37.51%) noncatalytic process (33.56%). Moreover, heavier fractions, such as residual fuel oil bitumen. While modification enhanced BET surface area raw 4.04 49.61 m2/g Ni–ZrO2–MSS, catalyst after dropped 15.88 m2/g, aligning decreased H2 uptake, indicating loss active sites. Similarly, 522.25 387.37 HTL, while pore volume 0.2095 0.3425 cm3/g. However, spent displayed an increase uptake (269.49 μmol/g) shift reduction peaks higher temperatures, suggesting creation new sites or changes dispersion NiO species during reaction. TPO graphs confirm presence coke intermediate structure between amorphous graphitic carbon.

Language: Английский

Citations

0
Role of MgO in Al2O3‐supported Fe catalysts for hydrogen and carbon nanotubes formation during catalytic methane decomposition DOI Creative Commons

Mohammed O. Bayazed,

Ahmed S. Al‐Fatesh, Anis H. Fakeeha

et al.

Energy Science & Engineering, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 1, 2024

Abstract Catalytic methane decomposition is a promising technology for reducing the reliance on fossil fuels and mitigating effects of climate change by producing clean hydrogen value‐added carbon without emission greenhouse gases. The aim study was to investigate use Al 2 O 3 ‐modified MgO doped iron‐based catalysts catalytic methane. were synthesized using impregnation method characterized various analysis techniques, including Brunauer, Emmett, Teller, temperature programmed reduction, oxidation, X‐ray diffraction, thermal gravimetric analysis, Raman, scanning electron microscopy, transmission microscopy. activity tested in packed‐bed reactor with gas flow rate 20 mL/min at 800°C. investigation focuses influence incorporating magnesium into alumina concentration ranging from (20%–70%), where higher levels improve creating more active sites, positively impacting decomposition. Enhanced catalyst reducibility increased particle dispersion lead improved properties despite reduced surface area. FA70M FA63M exhibited almost same characteristics highest stability conversion among investigated, reaching 87% 85% 800°C 120 min. Moreover, both showed yields 86% 85%, respectively. introduction further total yield 103% FA 39% FM 114% 120% respective (FA70M FA63M). During reaction, nanotubes varying diameters produced. Higher iron loading resulted positive trend.

Language: Английский

Citations

3
Fe–Ce–Al Catalysts for Decomposition of Methane to High Purity Hydrogen and High-Value Carbon DOI
Dwi Hantoko, Wasim Ullah Khan, Aprizon Putra

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2024, Volume and Issue: 63(44), P. 18869 - 18878

Published: Oct. 28, 2024

Catalytic methane decomposition is a promising technique for COx-free hydrogen production and carbon nanomaterials. In this research, iron-supported catalysts, prepared by successive wetness impregnation, were studied at 700 °C. The results showed that Fe0 turned out to be the active site greater metal–support interaction led formation of iron aluminate (FeAl2O4), both which played role in catalytic activity performance. 30Fe/Ce–Al catalyst performed best terms maximum conversion (76%) rate (1.04 mol/gMetal/s/surface area). observation also suggested 10Fe/Ce–Al significantly deactivated due metal particle agglomeration, as evidenced negligible weight loss thermogravimetric analysis. contrast, 20Fe/Ce–Al catalysts from agglomeration deposition. surface morphology analysis spent indicated deposited was multiwalled nanotubes followed base-growth mechanism.

Language: Английский

Citations

1