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Article

Optimization of Synthesis Conditions of Ni/SBA-15 Catalysts: Confined Nanoparticles and Improved Stability in Dry Reforming of Methane

1
Department of Chemical Engineering, Faculty of Engineering, University of Balamand, Amioun P.O. Box 33, Lebanon
2
Laboratoire de Réactivité de Surface, Sorbonne Universités, UPMC Université Paris 06, UMR CNRS 7197, 4 Place Jussieu, 75005 Paris, France
*
Authors to whom correspondence should be addressed.
Catalysts 2021, 11(1), 44; https://doi.org/10.3390/catal11010044
Received: 23 November 2020 / Revised: 24 December 2020 / Accepted: 27 December 2020 / Published: 31 December 2020
Despite its economic and environmental advantages, the dry reforming of methane using supported Ni-based catalysts remains challenging due to problems of metal particle sintering and carbon deposition, which lead to loss in catalytic activity. In this study, different silica supports, containing 5 wt% nickel, were prepared and characterized by N2 sorption, XRD, TPR, and TEM/SEM, in addition to Raman and TGA/MS for the spent catalysts. Different synthesis conditions were thus varied, like nickel deposition method, nature of nickel precursor salt, conditions for thermal activation, and nature of support. The results showed that enhanced metal dispersion, good confinement, and efficient stabilization of the active phase inside the pores can be achieved by using a well-structured mesoporous support. Moreover, it was demonstrated that carbon resistance can be improved when small nickel particles are well confined inside the pores. The strategies that affect the final dispersion of nickel particles, their consequent confinement inside (or deposition outside) the mesopores and the resulting catalytic activity and stability include mainly the application of hydrothermal treatment to the support, the variation of the nature of nickel precursor salt, and the conditions for thermal activation. General guidelines for the preparation of suitable Ni-based catalysts highly active and stable for dry reforming of methane (DRM) are thus presented in this work. View Full-Text
Keywords: methane dry reforming; nickel; mesoporous support; internal/external particles; synthesis parameters; precursor salt methane dry reforming; nickel; mesoporous support; internal/external particles; synthesis parameters; precursor salt
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MDPI and ACS Style

Kaydouh, M.-N.; El Hassan, N.; Davidson, A.; Massiani, P. Optimization of Synthesis Conditions of Ni/SBA-15 Catalysts: Confined Nanoparticles and Improved Stability in Dry Reforming of Methane. Catalysts 2021, 11, 44. https://doi.org/10.3390/catal11010044

AMA Style

Kaydouh M-N, El Hassan N, Davidson A, Massiani P. Optimization of Synthesis Conditions of Ni/SBA-15 Catalysts: Confined Nanoparticles and Improved Stability in Dry Reforming of Methane. Catalysts. 2021; 11(1):44. https://doi.org/10.3390/catal11010044

Chicago/Turabian Style

Kaydouh, Marie-Nour, Nissrine El Hassan, Anne Davidson, and Pascale Massiani. 2021. "Optimization of Synthesis Conditions of Ni/SBA-15 Catalysts: Confined Nanoparticles and Improved Stability in Dry Reforming of Methane" Catalysts 11, no. 1: 44. https://doi.org/10.3390/catal11010044

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