scholarly journals Hydrogen-free hydrogenation of nitrobenzene via direct coupling with cyclohexanol dehydrogenation over ordered mesoporous MgO/SBA-15 supported Cu nanoparticles

RSC Advances ◽  
2020 ◽  
Vol 10 (64) ◽  
pp. 38755-38766 ◽  
Author(s):  
Ravi Kumar Marella ◽  
Venkata Rao Madduluri ◽  
Sivarama Krishna Lakkaboyana ◽  
Marlia M. Hanafiah ◽  
Sarala Yaaratha
Keyword(s):  
Direct Coupling ◽  
Cu Nanoparticles ◽  
Cyclohexanol Dehydrogenation ◽  
Ordered Mesoporous

Coupling of nitrobenzene and cyclohexanol over mesoporous Cu/MgO-SBA15 exhibited better conversion of 89% cyclohexanol, 82% nitrobenzene with remarkable yields of cyclohexanone (83%) and aniline (75%). The catalyst has stable activity up to 30 h.

scholarly journals Dehydrogenation of bioethanol using Cu nanoparticles supported on N‐doped ordered mesoporous carbon

ChemCatChem ◽  
2020 ◽  
Vol 12 (22) ◽  
pp. 5644-5655
Author(s):  
Rouzana Pulikkal Thumbayil ◽  
David Benjamin Christensen ◽  
Jerrik Mielby ◽  
Søren Kegnæs
Keyword(s):  
Mesoporous Carbon ◽  
Ordered Mesoporous Carbon ◽  
Cu Nanoparticles ◽  
Ordered Mesoporous

scholarly journals Cover Feature: Dehydrogenation of bioethanol using Cu nanoparticles supported on N‐doped ordered mesoporous carbon (ChemCatChem 22/2020)

ChemCatChem ◽  
2020 ◽  
Vol 12 (22) ◽  
pp. 5571-5571
Author(s):  
Rouzana Pulikkal Thumbayil ◽  
David Benjamin Christensen ◽  
Jerrik Mielby ◽  
Søren Kegnæs
Keyword(s):  
Mesoporous Carbon ◽  
Ordered Mesoporous Carbon ◽  
Cu Nanoparticles ◽  
Ordered Mesoporous

scholarly journals Testing PtCu Nanoparticles Supported on Highly Ordered Mesoporous Carbons CMK3 and CMK8 as Catalysts for Low-Temperature Fuel Cells

Catalysts ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 724
Author(s):  
Julia Garcia-Cardona ◽  
Francisco Alcaide ◽  
Enric Brillas ◽  
Ignasi Sirés ◽  
Pere L. Cabot
Keyword(s):  
Photoelectron Spectroscopy ◽  
Reduction Reaction ◽  
Binding Energies ◽  
Cyclic Voltammograms ◽  
Mesoporous Carbons ◽  
Cu Nanoparticles ◽  
Ordered Mesoporous Carbons ◽  
X Ray ◽  
Surface Areas ◽  
Ordered Mesoporous

Pt(Cu) nanoparticles supported on CMK3 and CMK8 ordered mesoporous carbons (OMCs) have been synthesized by electroless deposition of Cu followed by galvanic exchange with Pt. The structural characterization by high-resolution transmission electron microscopy and X-ray diffraction showed the formation of Pt(Cu) nanoparticles of 4–5 nm, in which PtCu alloys with contracted fcc Pt lattice and 70–80 at.% Pt was identified. The X-ray photoelectron spectroscopy analyses indicated that the Pt(Cu) nanoparticles were mainly composed of a PtCu alloy core covered by a Pt-rich shell, in agreement with the steady cyclic voltammograms, which did not show any Cu oxidation peaks. Electroactive surface areas up to about 70 m2 gPt−1 were obtained. The onset potentials for CO oxidation and the oxygen reduction reaction were more negative and positive, respectively, as compared to Pt/C, thus indicating higher activity of these Pt(Cu) catalysts with respect to the latter. Based on the corresponding binding energies, these better activities were attributed to the favorable geometric and ligand effects of Cu on Pt, which were able to reduce the adsorption energy of the intermediates on Pt. Pt(Cu)/CMK3 showed competitive mass and specific activities, as well as better stability than Pt/C.

Fabrication and Excellent Catalytic Performance of Three-dimensional Ordered Mesoporous Molybdenum Oxides

2014 ◽  
Vol 29 (2) ◽  
pp. 124-130 ◽  
Author(s):  
Yu-Cheng DU ◽  
Guang-Wei ZHENG ◽  
Qi MENG ◽  
Li-Ping WANG ◽  
Hai-Guang FAN ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Catalytic Performance ◽  
Molybdenum Oxides ◽  
Ordered Mesoporous ◽  
Excellent Catalytic Performance
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