One-pot prepared mesoporous silica SBA-15-like monoliths with embedded Ni particles as selective and stable catalysts for methane dry reforming

被引：85

作者：

Daoura, Oscar ^{[1
,2
]}

Fornasieri, Giulia ^{[3
]}

Boutros, Maya ^{[1
]}

El Hassan, Nissrine ^{[4
]}

Beaunier, Patricia ^{[2
]}

Thomas, Cyril ^{[2
]}

Selmane, Mohamed ^{[5
]}

Miche, Antoine ^{[2
]}

Sassoye, Capucine ^{[6
]}

Ersen, Ovidiu ^{[7
]}

Baaziz, Walid ^{[7
]}

Massiani, Pascale ^{[2
]}

Bleuzen, Anne ^{[3
]}

Launay, Franck ^{[2
]}

机构：

[1] Lebanese Univ, Fac Sci 2, Lab Chim Phys Mat LCPM PR2N, Campus Fanar,BP 90696, Jdeideh, Lebanon

[2] Sorbonne Univ, Lab Reactivite Surface LRS, UMR 7197 CNRS, Campus Pierre & Marie Curie,4 Pl Jussieu, F-75005 Paris, France

[3] Univ Paris Saclay, Inst Chim Mol & Mat Orsay ICMMO, UMR 8182 CNRS, F-91405 Orsay, France

[4] Univ Balamand, Dept Chem Engn, POB 33, Amioun El Koura, Lebanon

[5] Sorbonne Univ, Inst Mat Paris Ctr IMPC, FR 2482CNRS, Campus Pierre & Marie Curie,4 Pl Jussieu, F-75005 Paris, France

[6] Sorbonne Univ, Lab Chim Matiere Condensee Paris LCMCP, UMR 7574 CNRS, Campus Pierre & Marie Curie,4 Pl Jussieu, F-75005 Paris, France

[7] Univ Strasbourg, Inst Phys & Chim Mat Strasbourg IPCMS, UMR 7504 CNRS, 23 Rue Loess,BP43, F-67034 Strasbourg 2, France

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2021年 / 280卷

基金：

欧盟第七框架计划;

关键词：

Dispersion; Mesoporous silica; Dry reforming; Stability; NiO clusters; CARBON-DIOXIDE; HIGHLY EFFICIENT; CO2; SHELL; COKE; CH4; CONFINEMENT; NI/SBA-15; STABILITY; MECHANISM;

D O I：

10.1016/j.apcatb.2020.119417

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ni@SBA-15 monoliths with up to 5 wt.% of Ni were successfully synthetized by means of an original and easy one-pot sol-gel method. Transmission Electron Microscopy (TEM), X-ray Photoelectron Spectroscopy (XPS), Temperature-Programmed Reduction (TPR), Pair Distribution Function (PDF) and X-Ray Diffraction (XRD) were used for the structural characterization of the samples. After H-2-reduction, those solids exhibited small Ni degrees particles (between 1-3 nm) highly dispersed (one of the highest dispersion reported in the literature to date for 5 wt.% Ni/Silica materials) in strong interaction with the silica support. Scanning Transmission Electron Microscopy in the High Angle Annular Dark Field (STEM/HAADF) mode, chemical mapping by Energy Dispersive X-Ray (EDX) spectroscopy and electron tomography in STEM-HAADF mode highlighted the presence of Ni particles homogeneously distributed, especially in the mesopores. Such confined Ni nanoparticles were shown to be very selective and stable in the dry reforming of methane.

引用

页数：13

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