Akron, OH, United States

Sid Richardson Carbon & Energy Co

www.sidrich.com
Akron, OH, United States

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Chanmanee W.,University of Texas at Arlington | De Tacconi N.R.,University of Texas at Arlington | Rajeshwar K.,University of Texas at Arlington | Lin W.-Y.,Sid Richardson Carbon & Energy Co | And 2 more authors.
Journal of the Electrochemical Society | Year: 2012

Facile photochemical synthesis of trimetallic Pt-Pd-Au nanoclusters supportedon carbon-TiO2 (90:10 mass%) supports, is described. Heterogeneous photocatalysis was used for sequential metal photodeposition which was sustained by the photoactivity under bandgap irradiation of the TiO 2 substrate component. This new-generation electrocatalyst was characterized by high-resolution transmission electron microscopy, X-ray diffraction, X-ray photoelectron microscopy, and cyclic voltammetry. Its electroactivity for the oxygen reduction reaction (ORR) and durability, assessed by hydrodynamic voltammetry and galvanostatic polarization probes respectively, were compared with the respective bimetallic (Pt-Pd, Pt-Au and Pd-Au) parent materials prepared by an identical synthetic procedure. Fine tuning of the amount and Pt:Pd ratio afforded superior electrocatalytic activity for the ORR, and the Au component of the trimetallic composition enhanced its stability/durability against carbon corrosion. © 2012 The Electrochemical Society.


De Tacconi N.R.,University of Texas at Arlington | Rajeshwar K.,University of Texas at Arlington | Chanmanee W.,University of Texas at Arlington | Valluri V.,University of Texas at Arlington | And 3 more authors.
Journal of the Electrochemical Society | Year: 2010

Heterogeneous photocatalysis was used to prepare bimetallic Pt-Au modified carbon- TiO2 matrices for use in polymer electrolyte fuel cells. These new generation electrocatalysts were characterized by transmission electron microscopy, energy-dispersive X-ray analyses, X-ray diffraction, and X-ray photoelectron microscopy. The electrocatalytic activity of these materials for the oxygen reduction reaction (ORR) was assessed by rotating disk hydrodynamic voltammetry. Of the three variant scenarios that can be envisioned for photocatalytic deposition of the two metals, i.e., sequential deposition (with Pt first and Au second or Au first and Pt second) or simultaneous deposition of Pt and Au on the C-TiO2 nanocomposite surface from a single bath, electrocatalyst samples with Pt decorating the initially deposited Au nanoclusters (designated as Pt/Au/C-TiO2) performed the best in terms of ORR kinetic facility, even relative to the monometallic case of Pt supported on C-TiO2. The durability of these electrocatalysts (in terms of corrosion) was assessed via galvanostatic polarization tests; once again Pt/Au/C-TiO2 fared best relative to the other two samples as well as the Pt/C-TiO2 control case. For all the electrochemical analyses, the total metal loading in the electrocatalysts was kept constant at 20% (by mass) for meaningful comparison. © 2009 The Electrochemical Society.


Rajeshwar K.,University of Texas at Arlington | Janaky C.,University of Szeged | Lin W.-Y.,Sid Richardson Carbon & Energy Co | Roberts D.A.,Sid Richardson Carbon & Energy Co | Wampler W.,Sid Richardson Carbon & Energy Co
Journal of Physical Chemistry Letters | Year: 2013

Heterogeneous photocatalysis can be used to generate metal-nanocluster- decorated oxide semiconductor-carbon nanocomposite matrixes for driving multielectron processes of practical import. The oxide semiconductor nanoparticles in such assemblies not only facilitate heterogeneous photocatalytic deposition of the metal nanoclusters but have several important functions that are highlighted in this Perspective. This Perspective additionally describes structure-property relationships of various mono-, bi-, and trimetallic electrocatalysts and the roles of the carbon support and the oxide semiconductor in the performance and durability of the overall architectures. Further applicability of such nanocomposites in value-added environmental remediation, such as the conversion of carbon dioxide to alcohol fuels, is discussed. © 2013 American Chemical Society.


Nikiel L.,Sid Richardson Carbon & Energy Co | Mason R.,Sid Richardson Carbon & Energy Co | Wampler W.,Sid Richardson Carbon & Energy Co
Rubber Chemistry and Technology | Year: 2016

It is well documented throughout the literature that filler dispersion significantly influences rubber performance. However, there is no single experimental method to measure dispersion precisely. By presenting new experimental techniques and reviewing several existing ones that measure dispersion at different length scales, steps are undertaken to close the knowledge gap in understanding dispersion. Some methods, such as electrical resistivity, are able to probe only the conductive carbon black network; the others take into consideration all compounding ingredients including mineral fillers and chemicals. One of the techniques discussed in more detail will be surface profilometry, which is based on the noncontact optical interferometry principle. The other technique reviewed in more detail is based on high-resolution field emission scanning electron microscopy imaging. These different techniques were employed to evaluate multiple rubber compounds with varying dispersion levels, and the data will be presented and discussed.


Patent
Sid Richardson Carbon & Energy Co | Date: 2015-06-17

A nanospike hybrid carbon black product includes a plurality of carbon black aggregates. Each of the carbon black aggregates has a surface with a plurality of carbon nanospike formed thereon. The carbon nanospikes may each have a length between about 5 nm and 100 nm, and a width between about 5 nm and about 50 nm. A method for manufacturing the nanospike hybrid carbon black product includes the steps of injecting a primary carbon feedstock into a carbon black reactor, and combusting the carbon feedstock under a predetermined high temperature in the carbon black reactor to form carbon black aggregates. A catalyst is then deposited on surfaces of the carbon black aggregates. A secondary carbon feedstock is injected into the carbon black reactor, and reacted with the catalyst to grow carbon nanospikes on the surfaces of the carbon black aggregates.


Patent
Sid Richardson Carbon & Energy Co | Date: 2016-02-23

A carbon black product comprises aggregates of carbon black characterized as having an OAN of between 139 and 149 ml/100 g, a COAN of between 95 and 105 ml/100 g, an iodine adsorption number I_(2 )No of between 52 and 62 mg/g, and a multipoint nitrogen adsorption N_(2)SA of between 54 and 64 m^(2)/g. Tires manufactured with the carbon black product exhibit low rolling resistance and low heat build-up under service conditions.


A chemically treated carbon black product is provided, which includes a pellet having an agglomerated mass of carbon black aggregates densified in a generally spheroidal form. The carbon black aggregates have polysulfide adsorbed on surfaces thereof. The polysulfide is thereby distributed throughout the pellet. Elastomeric compositions containing the chemically treated carbon black are also provided, and exhibit a reduction in hysteresis and equivalent or better abrasion resistance. A method for manufacturing the treated carbon black product is also disclosed.


A chemically treated carbon black product is provided, which includes a pellet having an agglomerated mass of carbon black aggregates densified in a generally spheroidal form. The carbon black aggregates have polysulfide adsorbed on surfaces thereof. The polysulfide is thereby distributed throughout the pellet. Elastomeric compositions containing the chemically treated carbon black are also provided, and exhibit a reduction in hysteresis and equivalent or better abrasion resistance. A method for manufacturing the treated carbon black product is also disclosed.


Trademark
Sid Richardson Carbon & Energy Co | Date: 2012-11-01

Carbon for industrial purposes.


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