Synthesis of graphitic mesoporous carbon from sucrose as a catalyst support for ethanol electro-oxidation

2012 ◽  
Vol 22 (34) ◽  
pp. 17820 ◽  
Author(s):  
Dingsheng Yuan ◽  
Xiaoli Yuan ◽  
Wujun Zou ◽  
Fulong Zeng ◽  
Xiangjin Huang ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Catalyst Support ◽  
Electro Oxidation

Effect of Nitric Acid on Modified Mesoporous Carbon as Catalyst Support of Direct Methanol Fuel Cell

2013 ◽  
Vol 10 (5) ◽  
Author(s):  
Qiao-xia Li ◽  
Hong-min Mao ◽  
Jin-guang Li ◽  
Qun-jie Xu
Keyword(s):  
Nitric Acid ◽  
Mesoporous Carbon ◽  
Chemical Reduction ◽  
Energy Dispersive Spectrometer ◽  
Catalyst Support ◽  
Pt Catalyst ◽  
Acid Media ◽  
Composite Catalysts ◽  
Direct Methanol ◽  
Electro Oxidation

Nitric acid modified Mesoporous carbon (CMK-3) supported Pt particles have been prepared by chemical reduction with NaBH4 as a reducing agent. Energy dispersive spectrometer shows that the catalysts have some oxygenic functional groups. The activity of the composite catalysts for methanol electro-oxidation was investigated by using cyclic votammogram and chronoamperometry in acid media. The results indicated that modified mesoporous carbon can improve the catalytic ability of Pt catalyst for methanol electro-oxidation and antipoison capability for CO. The composite electrode modified by 0.23 g nitric acid has the highest electrochemical ability.

scholarly journals Highly Mesoporous Carbon Aerogel as Catalyst Support in Proton Exchange Membrane Fuel Cells

2019 ◽  
Author(s):  
Kevin Gu ◽  
Eric J. Kim ◽  
Sunil K. Sharma ◽  
Keyword(s):  
Fuel Cells ◽  
Activated Carbon ◽  
Specific Surface ◽  
Surface Area ◽  
Mesoporous Carbon ◽  
Proton Exchange Membrane ◽  
Catalyst Support ◽  
Carbon Aerogel ◽  
Proton Exchange ◽  
Exchange Membrane

<p>Carbon aerogel possesses unique structural and electrical properties, such as high mesopore volume, specific surface area, and electrical conductivity, which make it suitable for use as a catalyst support in Proton Exchange Membrane Fuel Cells (PEMFC). In this study, we present a novel synthesis of highly mesoporous carbon aerogel via ambient-drying and investigate its application in PEMFCs. The structural effects of activation on carbon aerogel were also studied. The TEM, XRF, Non Localized Density Function Theory (NLDFT) and BJH analysis were carried out to observe the morphology and pore structure. Pt on carbon aerogel and activated carbon aerogel show efficient activity in both oxygen reduction and hydrogen oxidation reactions compared to Pt on Vulcan XC-72, with increases up to 715% and 195% in specific power density, respectively. The enhanced performance of carbon aerogel is attributed to its large specific surface area and high mesopore to micropore ratio. Accelerated stress tests show that carbon aerogel has comparable durability with Vulcan XC-72, while activated carbon aerogel is less durable than both materials. Thus, the mesoporous carbon aerogel provides an efficient, lower-cost alternative to existing microporous carbon material as a catalyst support in PEMFCs.</p><p></p>

scholarly journals Synthesis of Mesoporous Carbon from Merbau Wood (Intsia spp.) by Microwave Method as Ni Catalyst Support for α-Cellulose Hydrocracking

2019 ◽  
Author(s):  
Andaru Dena Prasiwi ◽  
Wega Trisunaryanti ◽  
Triyono Triyono ◽  
Iip Izul Falah ◽  
Darma Santi ◽  
...  
Keyword(s):  
Microwave Irradiation ◽  
Surface Area ◽  
Mesoporous Carbon ◽  
Catalyst Support ◽  
Liquid Product ◽  
Total Pore Volume ◽  
Ni Catalyst ◽  
Microwave Method ◽  
Average Pore ◽  
Impregnation Technique

Synthesis of mesoporous carbon from Merbau wood (Intsia spp.) waste by microwave method as nickel catalyst support for α-cellulose hydrocracking had been carried out. The Merbau wood sawdust was carbonized at 800 °C to produce C800 and the C800 was treated by microwave irradiation (399 W) for 5 min to produce C800MW. The Merbau wood flakes, which were only treated by microwave irradiation (399 Watts) for 30 min produced CMW. Wet impregnation technique was carried out to disperse the Ni metal (1.0, 1.5, and 2.0 wt.%) onto the best mesoporous carbon. The mesoporous carbons were analyzed by Fourier Transform Infra-Red Spectroscopy (FTIR), Surface Area Analyzer (SAA) and Scanning Electron Microscopy (SEM). The hydrocracking of pyrolyzed α-cellulose was carried out at 400 °C. The liquid product was analyzed by Gas Chromatograph-Mass Spectrometer (GC-MS). The results showed that the C800MW was the best performance carbon and it had a specific surface area, total pore volume, average pore diameter and acidity of 364.12 m2/g, 0.28 cm3/g, 3.03 nm, and 2.18 mmol/g, respectively. The Ni1.5/C800MW catalyst produced the highest conversion of liquid product (58.76 wt.%) than the Ni1/C800MW (57.51 wt.%) and Ni2/C800MW (34.18 wt.%).

Three-dimensional crumpled graphene as an electro-catalyst support for formic acid electro-oxidation

2016 ◽  
Vol 4 (12) ◽  
pp. 4587-4591 ◽  
Author(s):  
Yang Zhou ◽  
Xian-Chao Hu ◽  
Qizhe Fan ◽  
He-Rui Wen
Keyword(s):  
Graphene Oxide ◽  
Formic Acid ◽  
Catalyst Support ◽  
Three Dimensional ◽  
Pd Catalyst ◽  
Support Material ◽  
Drying Method ◽  
Excellent Activity ◽  
Electro Oxidation ◽  
Crumpled Graphene

Three-dimensional crumpled graphene (PRGO) was synthesized from graphene oxide (GO) solution by the spay drying method and employed as the support material for the Pd catalyst. Compared with the commercial Pd/C and Pd/RGO catalysts, the as-prepared Pd/PRGO catalyst exhibits excellent activity and stability towards formic acid electrooxidation.

INVESTIGATION OF THE ELECTROCHEMICAL BEHAVIOR OF HEAT-TREATED CARBON BLACKS AND Pt/C CATALYSTS

2002 ◽  
Vol 09 (03n04) ◽  
pp. 1443-1452 ◽  
Author(s):  
C. D. HUANG ◽  
Z. T. XIONG ◽  
J. Y. LIN ◽  
K. L. TAN
Keyword(s):  
Carbon Black ◽  
Electrochemical Behavior ◽  
Catalyst Support ◽  
Carbon Surface ◽  
Carbon Blacks ◽  
Heat Treated ◽  
Platinum Particles ◽  
Electro Oxidation ◽  
Treated Carbon ◽  
Xps Study

In this paper we report the electrochemical behavior of heat-treated carbon blacks and Pt/C catalysts. Cyclic voltammetry indicates that the heat-treated carbon black as catalyst support does not improve the Pt/C catalyst's activity for methanol oxidation. An XPS study of a Pt-loaded carbon black indicates that the amounts of oxidized platinum and oxygen-functional groups on catalysts are decreased when the platinum particles are deposited on the heat-treated carbon surface. These changes in the surface and crystalline structural properties of carbon materials lead to the catalytic activity change in methanol electro-oxidation.

Sign in / Sign up

Export Citation Format

Share Document