Browsing by Subject "Platinum"
Now showing items 1-20 of 24
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Aqueous phase reforming (APR) of glycerol over platinum supported on Al2O3 catalyst
(2016)The glycerol's APR reaction over 5% Pt/Al2O3 catalyst for H2 production in a batch reactor is investigated in the present work. The effect of the operating parameters, such as the: i) reaction time, ii) operating temperature, ... -
Bioethanol steam reforming over Pt and Ag in an electrochemical CSTR reactor
(2005)The environmental problems caused by the intensive use of fossil fuels-as well as their limited availability- are increasingly demanding a more rational use of our energy resources. Among the various fuels which can be ... -
Direct alcohol fuel cells: Challenges and future trends
(2011)Among the most considered future alternative energy conversion systems are fuel cells. A fuel cell is an electrochemical device that continuously and directly converts chemical energy to electricity with the most common ... -
The effect of microwave operation parameters on the electrochemical performance of Pt/C catalysts
(2011)In the present work, the effect of the microwave operation parameters on the heating behaviour of ethylene glycol (EG) solution and thereafter on the physicochemical and electrochemical properties of Pt/C catalysts have ... -
Effect of pore morphology of mesoporous carbons on the electrocatalytic activity of Pt nanoparticles for fuel cell reactions
(2010)In the present investigation, the role of the pore morphology of mesoporous carbons in the electrocatalytic activity of Pt nanoparticles for fuel cell reactions has been successfully revealed by adopting ordered mesoporous ... -
Efficient Pt-free electrocatalyst for oxygen reduction reaction: Highly ordered mesoporous N and S co-doped carbon with saccharin as single-source molecular precursor
(2016)Despite that nitrogen (N) and sulfur (S) co-doped ordered mesoporous carbon (OMC) as Pt-free catalyst for oxygen reduction reaction (ORR) shows a desirable performance, the synthesis method is always complicated and ... -
Experimental analysis of heat transfer between a heated wire and a rarefied gas in an annular gap with high diameter ratio
(2012)In this paper a first experimental attempt is performed to measure heat conduction through rarefied air at rest contained between two concentric cylinders. The heat transfer between a heated platinum wire having a diameter ... -
A facile soft-template synthesis of ordered mesoporous carbon/tungsten carbide composites with high surface area for methanol electrooxidation
(2012)Ordered 2D hexagonal mesoporous carbon/tungsten carbide (OMC/WC) composite nanomaterials have been successfully synthesized for the first time by the soft-template method with ammonium metagungstate as tungsten precursor ... -
High surface area tungsten carbide microspheres as effective Pt catalyst support for oxygen reduction reaction
(2009)In the present work, the preparation of high surface area (256 m2 g-1) tungsten carbide microspheres (TCMSs) by the aid of a simple hydrothermal method is realized and the performance of the Pt electrocatalyst supported ... -
Highly stable Pt-Co nanodendrite in nanoframe with Pt skin structured catalyst for oxygen reduction electrocatalysis
(2021)A novel self-etched engineering of Pt-Co nanodendrite in nanoframe (Pt-Co ND-NF) synthesized through a simple one-pot approach, for the first-time. The modulation mechanism of Pt-Co ND-NF formation is established by ... -
Investigation of the reaction of ethanol-steam mixtures in a YSZ electrochemical reactor operated in a fuel cell mode
(2006)In the present investigation ethanol-water mixtures were directly fed to a yttria stabilized zirconia (YSZ) electrochemical reactor operated in a fuel cell mode and the preliminary results are presented and discussed. ... -
An investigation of WC stability during the preparation of Pt@WC/OMC via a pulse microwave assisted polyol method
(2015)In the present work, the WC stability during the preparation of Pt@WC/OMC (Ordered Mesoporous Carbon) electrocatalysts, through a pulse microwave-assisted polyol method, is investigated by the aid of X-ray diffraction and ... -
KOH-activated multi-walled carbon nanotubes as platinum supports for oxygen reduction reaction
(2010)In the present investigation, multi-walled carbon nanotubes (MWCNTs) thermally treated by KOH were adopted as the platinum supporting material for the oxygen reduction reaction electrocatalysts. FTIR and Raman spectra were ... -
N-Doped Porous Molybdenum Carbide Nanobelts as Efficient Catalysts for Hydrogen Evolution Reaction
(2018)Electrochemical water splitting has been highly valued as a clean and sustainable method to produce hydrogen with high purity and large quantity. Platinum (Pt) possesses excellent performance for hydrogen evolution reaction ... -
One-pot synthesized boron-doped RhFe alloy with enhanced catalytic performance for hydrogen evolution reaction
(2018)Electrochemical water splitting has been highly recognized as a clean and sustainable method to produce hydrogen with high purity. An one-pot method to synthesize boron-doped RhFe alloy with excellent catalytic performance ... -
Ordered mesoporous tungsten carbide/carbon composites promoted Pt catalyst with high activity and stability for methanol electrooxidation
(2014)The current anode materials used for direct methanol fuel cells (DMFCs) are expensive and not sufficiently durable for commercial development. One of the major challenges lies in the development of an inexpensive, efficient ... -
Oxygen Reduction Reaction over PtFeM (M = Mo, V, W) Alloy Electrocatalysts: Role of the Compressive Strain Effect on Pt
(2019)The high level loading requirement of platinum and the sluggish oxygen reduction kinetics - catalyzed by platinum-based electrocatalysts - create major bottlenecks for cost-effective application of fuel cell technology. ... -
Pt/CN-doped electrocatalysts: Superior electrocatalytic activity for methanol oxidation reaction and mechanistic insight into interfacial enhancement
(2017)Nitrogen-doped ordered mesoporous carbon (NOMC) is studied as the support to synthesize a Pt/CN-doped catalyst for methanol oxidation reaction (MOR). The effects of carbon dimension and metal loading are investigated by ... -
A review of the most efficient low-Pt and Pt-free electrocatalysts for hydrogen PEMFCs
(2013)The main target of the PEMFC's scientific community is to reduce the total Pt loading to ca. 150 g cm-2 MEA, maintaining simultaneously high PEMFCs performances. The last years, promising results have also been reported ... -
Shell-thickness-dependent Pd@PtNi core–shell nanosheets for efficient oxygen reduction reaction
(2022)Platinum-based ultrathin core–shell nanosheets catalyst with moderate shell thickness have great potential to solve the problems of highly active catalyst for oxygen reduction reaction (ORR) within proton exchange membrane ...