Synthesis and functionalization of ordered mesoporous carbons supported Pt nanoparticles for hydroconversion of n-heptane

2018 ◽  
Vol 42 (17) ◽  
pp. 14517-14529 ◽  
Author(s):  
S. Said
Keyword(s):  
Reaction Pathway ◽  
Pt Nanoparticles ◽  
Mesoporous Carbons ◽  
Ordered Mesoporous Carbons ◽  
Ordered Mesoporous

Reaction pathway of n-heptane hydroconversion.

scholarly journals Electrochemical Behavior of Pt–Ru Catalysts Supported on Graphitized Ordered Mesoporous Carbons toward CO and Methanol Oxidation

Surfaces ◽  
2019 ◽  
Vol 2 (1) ◽  
pp. 1-15 ◽  
Author(s):  
Juan Carlos Calderón Gómez ◽  
Verónica Celorrio ◽  
Laura Calvillo ◽  
David Sebastián ◽  
Rafael Moliner ◽  
...  
Keyword(s):  
Pt Nanoparticles ◽  
Carbon Support ◽  
Physical Parameters ◽  
Mesoporous Carbons ◽  
Hydrogen Electrode ◽  
Current Time ◽  
Ordered Mesoporous Carbons ◽  
Ru Catalysts ◽  
Ordered Mesoporous ◽  
Reduction Methods

In this work, graphitized ordered mesoporous carbons (gCMK-3) were employed as support for Pt and Pt–Ru nanoparticles synthesized by different reduction methods. The catalysts displayed metal contents and Pt:Ru atomic ratios close to 20 wt % and 1:1, respectively. A comparison of the physical parameters of Pt and Pt–Ru catalysts demonstrated that Ru enters into the Pt crystal structure, with well-dispersed nanoparticles on the carbon support. The Pt catalysts exhibited similar surface oxide composition, whereas a variable content of surface Pt and Ru oxides was found for the Pt–Ru catalysts. As expected, the Pt–Ru catalysts showed low CO oxidation onset and peak potentials, which were attributed to the high relative abundances of both metallic Pt and Ru oxides. All the studied catalysts exhibited higher maximum current densities than those observed for the commercial Pt and Pt–Ru catalysts, although the current–time curves at 0.6 V vs. reversible hydrogen electrode (RHE) demonstrated a slightly higher stationary current density in the case of the Pt/C commercial catalyst compared with Pt nanoparticles supported on gCMK-3s. However, the stationary currents obtained from the Pt–Ru/gCMK-3 catalysts surpassed those of the commercial Pt–Ru material, suggesting the suitability of the prepared catalysts as anodes for these devices.

scholarly journals Nitrogen-doped carbon materials with cubic ordered mesostructure: low-temperature autoclaving synthesis for electrochemical supercapacitor and CO2 capture

RSC Advances ◽  
2017 ◽  
Vol 7 (21) ◽  
pp. 12524-12533 ◽  
Author(s):  
Lei Liu ◽  
Shi-Da Xu ◽  
Feng-Yun Wang ◽  
Yue-Jun Song ◽  
Jie Liu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Co2 Capture ◽  
Carbon Materials ◽  
Mesoporous Carbons ◽  
Body Centered Cubic ◽  
Ordered Mesoporous Carbons ◽  
Nitrogen Doped ◽  
Electrochemical Supercapacitor ◽  
Ordered Mesoporous ◽  
Nitrogen Doped Carbon

Nitrogen doped ordered mesoporous carbons with a 3-D body-centered cubic pore structure have been synthesized by means of a low-temperature autoclaving route under basic conditions, showing excellent performances for supercapacitors and CO2 capture.

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