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Article

Nanostructured Nickel Aluminate as a Key Intermediate for the Production of Highly Dispersed and Stable Nickel Nanoparticles Supported within Mesoporous Alumina for Dry Reforming of Methane

by
Leila Karam
1,2,
Julien Reboul
1,
Nissrine El Hassan
2,
Jaysen Nelayah
3 and
Pascale Massiani
1,*
1
Sorbonne Université, Campus UPMC, CNRS UMR-7197, Laboratoire de Réactivité de Surface, 4 Place Jussieu, F-75005 Paris, France
2
Department of Chemical Engineering, Faculty of Engineering, University of Balamand, P.O. Box 33, Amioun, 33 El Koura, Lebanon
3
Laboratoire Matériaux et Phénomènes Quantiques, Université de Paris, CNRS, F-75013 Paris, France
*
Author to whom correspondence should be addressed.
Molecules 2019, 24(22), 4107; https://doi.org/10.3390/molecules24224107
Submission received: 2 October 2019 / Revised: 3 November 2019 / Accepted: 7 November 2019 / Published: 14 November 2019
(This article belongs to the Special Issue Microporous/Mesoporous Inorganic Materials)
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Abstract

Two routes of preparation of mesoporous Ni-alumina materials favoring the intermediate formation of nanostructured nickel-aluminate are presented. The first one involves an aluminum containing MOF precursor used as sacrificial template to deposit nickel while the second is based on a one-pot synthesis combined to an EISA method. As shown by a set of complementary techniques, the nickel-aluminate nanospecies formed after calcination are homogeneously distributed within the developed mesoporous alumina matrices whose porous characteristics vary depending on the preparation method. A special attention is paid to electron-microscopy observations using especially STEM imaging with high chemical sensitivity and EDS elemental mapping modes that help visualizing the extremely high nickel dispersion and highlight the strong metal anchoring to the support that persists after reduction. This leads to active nickel nanoparticles particularly stable in the reaction of dry reforming of methane.
Keywords: nickel aluminate; mesoporous alumina; heterogenous catalysis; MOF; HAADF; dry reforming of methane (DRM) nickel aluminate; mesoporous alumina; heterogenous catalysis; MOF; HAADF; dry reforming of methane (DRM)
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MDPI and ACS Style

Karam, L.; Reboul, J.; El Hassan, N.; Nelayah, J.; Massiani, P. Nanostructured Nickel Aluminate as a Key Intermediate for the Production of Highly Dispersed and Stable Nickel Nanoparticles Supported within Mesoporous Alumina for Dry Reforming of Methane. Molecules 2019, 24, 4107. https://doi.org/10.3390/molecules24224107

AMA Style

Karam L, Reboul J, El Hassan N, Nelayah J, Massiani P. Nanostructured Nickel Aluminate as a Key Intermediate for the Production of Highly Dispersed and Stable Nickel Nanoparticles Supported within Mesoporous Alumina for Dry Reforming of Methane. Molecules. 2019; 24(22):4107. https://doi.org/10.3390/molecules24224107

Chicago/Turabian Style

Karam, Leila, Julien Reboul, Nissrine El Hassan, Jaysen Nelayah, and Pascale Massiani. 2019. "Nanostructured Nickel Aluminate as a Key Intermediate for the Production of Highly Dispersed and Stable Nickel Nanoparticles Supported within Mesoporous Alumina for Dry Reforming of Methane" Molecules 24, no. 22: 4107. https://doi.org/10.3390/molecules24224107

APA Style

Karam, L., Reboul, J., El Hassan, N., Nelayah, J., & Massiani, P. (2019). Nanostructured Nickel Aluminate as a Key Intermediate for the Production of Highly Dispersed and Stable Nickel Nanoparticles Supported within Mesoporous Alumina for Dry Reforming of Methane. Molecules, 24(22), 4107. https://doi.org/10.3390/molecules24224107

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