Methane dry reforming with CO2 over ceria supported Ni catalyst prepared by reverse microemulsion synthesis

Rashid, Muhammad Usman; Daud, Wan Mohd Ashri Wan; Mohidem, Nur Atikah; Mohamad, Mardawani; Akhtar, Javaid; Azam, Muhammad; Miran, Waheed

doi:10.1016/j.fuel.2022.123433

Cited by 14 publications

(2 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the N 2 adsorption–desorption isotherms and pore size distribution plots of Ni/CeO 2 catalysts are displayed in Figure c,d, respectively. According to the IUPAC technical report, all isotherm curves present a representative IV-type loop with a typical H 3 -type hysteresis loop between the adsorption and desorption branches, , suggesting the existence of mesoporosity in the catalysts, which is also verified by the pore size distribution plots (Figure d). As shown in Table , the BET specific surface areas are calculated to be 23.89, 15.04, and 16.97 m 2 ·g –1 for Ni/CeO 2 -P, Ni/CeO 2 -S, and Ni/CeO 2 -H, respectively.…”

Section: Results and Discussionsupporting

confidence: 58%

Synthesis of the CeO₂ Support with a Honeycomb-Lantern-like Structure and Its Application in Dry Reforming of Methane Based on the Surface Spatial Confinement Strategy

Zhang

Gao

et al. 2023

J. Phys. Chem. C

View full text Add to dashboard Cite

Dry reforming of methane has received considerable interest as one of the most efficient thermocatalysis routes to coconvert two greenhouse gases (CO 2 and CH 4 ) into syngas (CO and H 2 ), requiring a robust catalyst for extensive application. CeO 2 with a honeycomb-lantern-like structure is fabricated by a facile template-free solvothermal process, followed by calcination, and the nickel-active component is confined on the surface of the honeycomb-lantern-like CeO 2 support (namely, Ni/CeO 2 -H) and employed in dry reforming of methane. The catalytic performance of the prepared sample is evaluated in a fixed-bed tubular reactor, and the CH 4 and CO 2 conversions could reach 83.94 and 82.81% at 800 °C, respectively. Meanwhile, the Ni/CeO 2 -H catalysts are thoroughly characterized using X-ray diffraction, N 2 adsorption− desorption, scanning electron microscopy, H 2 temperature-programmed reduction, CO 2 temperature-programmed desorption, X-ray photoelectron spectroscopy, thermogravimetric analysis, and CO 2 temperature-programmed oxidation (CO 2 -TPO), and the results demonstrate the enhancing effect of spatial confinement for the honeycomb-lantern-like structure. Moreover, the kinetics studies reveal that Ni/CeO 2 -H has the lowest activation energy (97.61 kJ/mol) among these Ni/CeO 2 catalyst samples, which can facilitate its excellent catalytic performance effectively. Based on the semiempirical power rate equation, the reaction orders of CH 4 and CO 2 for Ni/CeO 2 -H are 0.60 and 0.17, respectively. Furthermore, the activation energy of coke gasification for the spent Ni/CeO 2 -H catalyst is investigated and determined by the CO 2 -TPO technique on the basis of extrapolating the Wigner−Polanyi equation.

show abstract

Section: Results and Discussionsupporting

confidence: 58%

Synthesis of the CeO₂ Support with a Honeycomb-Lantern-like Structure and Its Application in Dry Reforming of Methane Based on the Surface Spatial Confinement Strategy

Zhang

Gao

et al. 2023

J. Phys. Chem. C

View full text Add to dashboard Cite

show abstract

“…An entrapped enzyme is more stable than a physically adsorbed enzyme. Entrapment immobilisation is less difficult to produce than covalent bonding, although enzyme activity is increased or preserved [56][57][58].…”

Section: Entrapment or Encapsulationmentioning

confidence: 99%

Recent Advances in Enzyme Immobilisation Strategies: An Overview of Techniques and Composite Carriers

Mohidem,

Mohamad,

Rashid

et al. 2023

J. Compos. Sci.

Self Cite

View full text Add to dashboard Cite

For over a century, enzyme immobilisation has been proven to be a superior strategy to improve catalytic activity and reusability and ensure easy separation, easy operation, and reduced cost. Enzyme immobilisation allows for an easier separation of the enzyme from the reaction mixture, thus simplifying downstream processing. This technology protects the enzyme from degradation or inactivation by harsh reaction conditions, making it more robust and suitable to be used in various applications. Recent strategies of immobilisation methods, such as adsorption, cross-linking, entrapment or encapsulation, and covalent bonding, were critically reviewed. These strategies have shown promising results in improving enzyme stability, activity, and reusability in various applications. A recent development in enzyme immobilisation in nanomaterials and agrowaste renewable carriers is underlined in the current review. Furthermore, the use of nanomaterials and agrowaste carriers in enzyme immobilisation has gained significant attention due to their unique properties, such as high surface area, high mass transfer, biocompatibility, and sustainability. These materials offer promising outcomes for developing more efficient and sustainable immobilised enzymes. This state-of-the-art strategy allows for better control over enzyme reactions and enhances their reusability, leading to more cost-effective and environmentally friendly processes. The use of renewable materials also helps to reduce waste generation and promote the utilisation of renewable resources, further contributing to the development of a circular economy.

show abstract

Catalytic performance of NixCoy catalysts supported on honeycomb-lantern-like CeO2 for dry reforming of methane: Synergistic effect and kinetic study

Li,

Wang,

et al. 2024

Chemical Engineering Science

View full text Add to dashboard Cite

Methane dry reforming with CO2 over ceria supported Ni catalyst prepared by reverse microemulsion synthesis

Cited by 14 publications

References 56 publications

Synthesis of the CeO₂ Support with a Honeycomb-Lantern-like Structure and Its Application in Dry Reforming of Methane Based on the Surface Spatial Confinement Strategy

Synthesis of the CeO₂ Support with a Honeycomb-Lantern-like Structure and Its Application in Dry Reforming of Methane Based on the Surface Spatial Confinement Strategy

Recent Advances in Enzyme Immobilisation Strategies: An Overview of Techniques and Composite Carriers

Catalytic performance of NixCoy catalysts supported on honeycomb-lantern-like CeO2 for dry reforming of methane: Synergistic effect and kinetic study

Contact Info

Product

Resources

About

Methane dry reforming with CO2 over ceria supported Ni catalyst prepared by reverse microemulsion synthesis

Cited by 14 publications

References 56 publications

Synthesis of the CeO2 Support with a Honeycomb-Lantern-like Structure and Its Application in Dry Reforming of Methane Based on the Surface Spatial Confinement Strategy

Synthesis of the CeO2 Support with a Honeycomb-Lantern-like Structure and Its Application in Dry Reforming of Methane Based on the Surface Spatial Confinement Strategy

Recent Advances in Enzyme Immobilisation Strategies: An Overview of Techniques and Composite Carriers

Catalytic performance of NixCoy catalysts supported on honeycomb-lantern-like CeO2 for dry reforming of methane: Synergistic effect and kinetic study

Contact Info

Product

Resources

About

Synthesis of the CeO₂ Support with a Honeycomb-Lantern-like Structure and Its Application in Dry Reforming of Methane Based on the Surface Spatial Confinement Strategy

Synthesis of the CeO₂ Support with a Honeycomb-Lantern-like Structure and Its Application in Dry Reforming of Methane Based on the Surface Spatial Confinement Strategy