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Relevant bibliographies by topics / PTC catalyst

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Journal articles
Dissertations / Theses
Book chapters
Conference papers
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Academic literature on the topic 'PTC catalyst'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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Journal articles on the topic "PTC catalyst"

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Sankarshana, T., J. Soujanya, and A. Anil Kumar. "Triphase Catalysis Using Silica Gel as Support." International Journal of Chemical Reactor Engineering 11, no. 1 (2013): 347–52. http://dx.doi.org/10.1515/ijcre-2013-0007.

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Abstract The oxidation reaction of 2-ethyl-1-hexanol with potassium permanganate in the presence and absence of silica-gel-supported phase-transfer catalyst (PTC) in triphasic conditions was studied. In a batch reactor, the performance of the solid-supported catalysts was compared with unsupported catalyst and without the catalyst. The effect of speed of agitation, catalyst concentration, potassium permanganate concentration and temperature on reaction rate was studied. The reaction is found to be in the kinetic regime. The rate of reaction with the catalyst immobilised on the silica gel was l

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Wang, Hui, Hongfei Lin, Xiaohu Li, et al. "Application of Phase Transfer Catalysis in the Esterification of Organic Acids: The Primary Products from Ring Hydrocarbon Oxidation Processes." Catalysts 9, no. 10 (2019): 851. http://dx.doi.org/10.3390/catal9100851.

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For enhancing the cetane number (CN) of diesel fraction, the selective oxidative ring opening method was applied to upgrade ring hydrocarbons. Organic acids, one of the main products from this oxidative reaction, being esterified by the phase transfer catalysis (PTC) approach were studied. Adipic acid, benzoic acid, and phthalic acid were used as model compounds. Reaction time, reaction temperature, the amount of water, and the amount of catalyst in the esterification process were investigated and optimized using orthogonal experimental design method. The kinetics of esterification process was

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Ye, Hongli, Tianci Wang, Shuangxi Liu, Cui Zhang, and Youqiong Cai. "Fabrication of Pt-Loaded Catalysts Supported on the Functionalized Pyrolytic Activated Carbon Derived from Waste Tires for the High Performance Dehydrogenation of Methylcyclohexane and Hydrogen Production." Catalysts 12, no. 2 (2022): 211. http://dx.doi.org/10.3390/catal12020211.

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The pyrolytic activated carbon derived from waste tires (PTC) was functionalized to fabricate the high performance of Pt-based catalysts in the dehydrogenation of methylcyclohexane and hydrogen production. Structural characterizations evidenced that the modification partially influenced the surface area, the pore structure, and the oxygen-containing functional groups of the supports. The techniques of CO pulse, transmission electron microscopy, and hydrogen temperature-programmed reduction were utilized to investigate the dispersion degrees and particle sizes of the active component Pt, and it

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Lóránt, Bálint, Krisztina László, and Gábor Márk Tardy. "Improving the Performance of Microbial Fuel Cells with Modified Carbon Aerogel Based Cathode Catalysts." Periodica Polytechnica Chemical Engineering 66, no. 1 (2021): 1–9. http://dx.doi.org/10.3311/ppch.18854.

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Microbial fuel cells (MFCs) are capable of converting the chemical energy of biodegradable organic matter directly into electricity, thus they can be applied in various fields: waste elimination, biosensor industry and production of renewable energy. In this study, the efficiency of noble metal free carbon aerogel based cathode catalysts was investigated and compared to plain glassy carbon cloth without catalyst (CC ) and platinum containing carbon powder catalyst ( PtC ) in H-type MFCs. Surface extension by carbon aerogel (CA ) enhanced the maximum power density by 34 % compared to CC, to 14.

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Depreux, P., and A. Marcincal-Lefebvre. "Application des conditions de réaction par transfert de phase à la synthèse d'amino-éthers dérivés du trans phénoxy-2 cyclohexanol." Canadian Journal of Chemistry 64, no. 3 (1986): 626–32. http://dx.doi.org/10.1139/v86-101.

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Amino-ethers of trans-2-phenoxycyclohexanol were prepared by methods involving anhydrous conditions (sodium alkoxides in xylene) or phase transfer catalysis conditions (liquid–liquid or solid–liquid two-phase systems). Various factors were optimized. In the liquid–liquid two-phase system, when no catalyst was added, reaction proceeds with comparable or even better yields than with some PTC catalysts, a quaternary salt being formed insitu. It was shown that the deprotonation of ROH takes place at the interface, since there was no OH− extraction in organic medium and the yield depends on the sti

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Margi, Nikhil H., and Ganapati D. Yadav. "Design and Development of Novel Continuous Flow Stirred Multiphase Reactor: Liquid–Liquid–Liquid Phase Transfer Catalysed Synthesis of Guaiacol Glycidyl Ether." Processes 8, no. 10 (2020): 1271. http://dx.doi.org/10.3390/pr8101271.

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Phase transfer catalysed (PTC) reactions are used in several pharmaceutical and fine chemical industrial processes. We have developed a novel stirred tank reactor (Yadav reactor) to conduct batch and continuous liquid–liquid–liquid (L-L-L) PTC reactions. The reactor had a provision of using three independent stirrers for each phase, thereby having complete control over the rate of mass transfer across the two interfaces. In the continuous mode of operation, the top and bottom phases were continuously fed into the reactor while the middle phase was used as a batch. All three stirrers were used

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Lewandowski, Grzegorz. "Comparison of the methods of the phase transfer catalysis and hydroperoxide in the epoxidation of 1,5,9-cyclododecatriene." Polish Journal of Chemical Technology 9, no. 3 (2007): 101–4. http://dx.doi.org/10.2478/v10026-007-0065-0.

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Comparison of the methods of the phase transfer catalysis and hydroperoxide in the epoxidation of 1,5,9-cyclododecatriene The process of the epoxidation of cis, trans, trans-1,5,9-cyclododecatriene (CDT) to 1,2-epoxy-5,9-cyclododecadiene (ECDD) with the 30% aqueous hydrogen peroxide under the phase transfer conditions and with tert-butyl hydroperoxide under the homogeneous conditions was investigated. Onium salts such as Aliquat® 336, Arquad® 2HT, methyltrioctylammonium bromide and the Na2WO4/H3PO4 catalyst system are very active under the phase transfer catalysis (PTC) conditions for the sele

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José da Silva, Márcio, and Lidiane Faria dos Santos. "Novel Oxidative Desulfurization of a Model Fuel with H2O2 Catalyzed by AlPMo12O40 under Phase Transfer Catalyst-Free Conditions." Journal of Applied Chemistry 2013 (June 12, 2013): 1–7. http://dx.doi.org/10.1155/2013/147945.

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A novel process was developed for oxidative desulfurization (ODS) in the absence of a phase transfer catalyst (PTC) using only Keggin heteropolyacids and their aluminum salts as catalysts. Reactions were performed in biphasic mixtures of isooctane/acetonitrile, with dibenzothiophene (DBT) as a model sulfur compound and hydrogen peroxide as the oxidant. Remarkably, only the AlPMo12O40-catalyzed reactions resulted in complete oxidation of DBT into DBT sulfone, which was totally extracted by acetonitrile, reducing the sulfur content of isooctane from the 1000 ppm to <1 ppm. Ranking of catalyst

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Kopeć, Daniel, Stefan Baj, and Agnieszka Siewniak. "Ultrasound-Assisted Green Synthesis of Dialkyl Peroxides under Phase-Transfer Catalysis Conditions." Molecules 25, no. 1 (2019): 118. http://dx.doi.org/10.3390/molecules25010118.

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The dialkyl peroxides, which contain a thermally unstable oxygen–oxygen bond, are an important source of radical initiators and cross-linking agents. New efficient and green methods for their synthesis are still being sought. Herein, ultrasound-assisted synthesis of dialkyl peroxides from alkyl hydroperoxides and alkyl bromides in the presence of an aqueous solution of an inorganic base was systematically studied under phase-transfer catalysis (PTC) conditions. The process run in a tri-liquid system in which polyethylene glycol as a phase-transfer catalyst formed a third liquid phase between t

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Jiang, Guanyu, Xinduo Sun, Fanrui Zhou, Kun Liang, and Qian Chen. "Chiral Quaternary Ammoniums Derived from Dehydroabietylamine: Synthesis and Application to Alkynylation of Isatin Derivatives Catalyzed by Silver." Catalysts 11, no. 12 (2021): 1479. http://dx.doi.org/10.3390/catal11121479.

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Abietic acid and its derivatives have broadly been used in fine chemicals and are renewable resources. Its inherent chiral rigid tricyclic phenanthrene skeleton is unique. Its utilities in asymmetric catalysis remain to be explored. A series new amide-type chiral quaternary ammoniums bearing dehydroabietylamine were designed, and prepared by two convenient steps. Acylation of dehydroabietylamine with bromoacetyl chloride afforded amide holding bromoacetyl group in higher yields using triethyl amine as base. Subsequent quaternization reaction gave the desired amide-type chiral quaternary ammoni

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Dissertations / Theses on the topic "PTC catalyst"

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Zhang, Jiuqing. "Palladium-Imidazolium Carbene Catalyzed Heck Coupling Reactions and Synthesis of a Novel Class of Fluoroanthracenylmethyl PTC Catalysts." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd1075.pdf.

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Dessal, Caroline. "Influence de l'atmosphère réactive sur la stabilité structurale de catalyseurs Pt1 supporté et performances associées en oxydation de CO et photogénération d'hydrogène." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1305/document.

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Ce travail de thèse a consisté en l’étude de catalyseurs ultradispersés, composés de clusters nanométriques ou d’atomes isolés (single-atom catalysts, SACs) de métal, une nouvelle classe de catalyseurs faisant actuellement l’objet d’un engouement mondial. Les systèmes Pt/?-Al2O3 et Pt/TiO2 ont été préparés, caractérisés et testés en oxydation de CO et photogénération d’hydrogène, respectivement. Plusieurs méthodes d’imprégnation et de traitement thermique ont été comparées, notamment grâce à l’analyse de la dispersion du platine par microscopie électronique en transmission à balayage (STEM). P

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Servin, Paul. "Dendrimères phosphorés & catalyse en milieu aqueux." Toulouse 3, 2007. http://www.theses.fr/2007TOU30128.

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A la fin des années 70, les premiers pionniers commencèrent à réaliser des réactions catalytiques en milieu aqueux. Leurs travaux furent remarqués mais ne suscitèrent pas un engouement général de la communauté scientifique. Aujourd'hui, un changement complet a eu lieu : dans le monde entier des équipes de recherche développent des réactions catalytiques en milieu bi- ou monophasique, hétérogène, homogène et toute autre combinaison possible avec l'eau comme solvant « mineur », « majeur » ou unique solvant. Une alternative à la méthode de synthèse généralement employée des dendrimères phosphorés

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Ramarou, Diteboho Selina. "Alkylated PTA platforms for mono- and polynuclear pre-catalysts for the aqueous biphasic hydroformylation of 1-octene." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29206.

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A series of mono-, di- and trimeric alkylated PTA ligands were synthesised. These ligands were reacted with the dimeric rhodium precursor, [RhCl(COD)]2, to produce the corresponding mono-, di- and trinuclear Rh(I)-PTA complexes. These complexes were then reacted with carbon monoxide to substitute the COD ligands with CO ligands, yielding the carbonyl analogues of the complexes. The ligands and complexes were fully characterised using various spectroscopic and analytical techniques, which include 1H, 13C and 31P NMR spectroscopy, FTIR spectroscopy, mass spectrometry, and elemental analysis. The

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Ben, Moussa Olfa. "Conception raisonnée de catalyseurs bifonctionnels : élaboration de catalyseurs Pt0/zéolithe-Alumine." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066700/document.

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Les catalyseurs bifonctionnels pour l’hydrocraquage nécessitent à la fois des sites acides de Brønsted et des sites métalliques. L’intimité entre sites acides et sites métalliques peut donc influer sur l’activité et la sélectivité de la réaction. Nous nous sommes proposés d’explorer l’effet de la distance sites métalliques-sites acides sur la conversion du n-heptane en concevant des catalyseurs à base de platine supportés sur des nanostructures alumine-zéolithe. Pour cela, nous avons étudié la synthèse de suspensions colloïdales nanométriques de zéolithes NaY (20 nm) beta (30 nm), ZSM-5 (50 nm

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PASQUALE, LEA. "Structural Evolution of PdCu and PtCu Nanocrystal Catalysts over Redox Treatments." Doctoral thesis, Università degli studi di Genova, 2019. http://hdl.handle.net/11567/973257.

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This thesis presents the main results on the synthesis of PdCu and PtCu bimetallic nanocrystals (NCs) and their application as catalysts for CO oxidation as a probe reaction. Focusing on Cu and keeping constant the NC size and the support material, the role of the noble metal in the alloy/dealloy/migration process of noble metal-Cu alloyed NCs was studied. The role of the support material in the same transformations was also objected of study. NCs with defined size and composition were successfully synthesized by means of colloidal synthesis methods. The NCs were further deposited on a SiO2 su

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Ben, Moussa Olfa. "Conception raisonnée de catalyseurs bifonctionnels : élaboration de catalyseurs Pt0/zéolithe-Alumine." Electronic Thesis or Diss., Paris 6, 2016. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2016PA066700.pdf.

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Les catalyseurs bifonctionnels pour l’hydrocraquage nécessitent à la fois des sites acides de Brønsted et des sites métalliques. L’intimité entre sites acides et sites métalliques peut donc influer sur l’activité et la sélectivité de la réaction. Nous nous sommes proposés d’explorer l’effet de la distance sites métalliques-sites acides sur la conversion du n-heptane en concevant des catalyseurs à base de platine supportés sur des nanostructures alumine-zéolithe. Pour cela, nous avons étudié la synthèse de suspensions colloïdales nanométriques de zéolithes NaY (20 nm) beta (30 nm), ZSM-5 (50 nm

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Wynn, Mélanie. "Synthèse de dioxyde de titane déposé sur des supports macro-poreux SiBC et SiBCN pour la photo-catalyse." Thesis, Valenciennes, 2017. http://www.theses.fr/2017VALE0029/document.

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La photo-catalyse est une voie très prisée pour la dépollution de l’eau ou de l’air. Le photo-catalyseur le plus employé est le dioxyde de titane (TiO2) mais l’activité photo-catalytique peut fortement varier d’une poudre à l’autre. De plus, il est très avantageux, voire nécessaire, de le déposer sur un support, pour une manipulation aisée, notamment s’il s’agit d’un monolithe poreux. Le but de cette thèse, menée en collaboration entre le LMCPA et l’IEM, est de produire un photo-catalyseur supporté : une mousse céramique, issue de précurseurs céramiques polymériques (voie PDC), revêtue de TiO2

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Hicken, Erik J. "Total Syntheses of (+)-Geldanamycin, (-)-Ragaglitazar, and (+)-Kurasoin A and Phase-Transfer-Catalyzed Asymmetric Alkylation." BYU ScholarsArchive, 2005. https://scholarsarchive.byu.edu/etd/801.

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Geldanamycin possesses various biological activities as seen in the NCI 60 cell line panel (13 nM avg., 70 nM SKBr-3 cells). The predominant mode of action providing these unique results arises from the ability of geldanamycin (GA) to bind to the chaperone heat shock protein 90 (Hsp90). Despite its complicated functionality, the first total synthesis of GA was accomplished, which included two new reactions developed specifically to address the stereochemical features. The final step in the synthesis of GA was a demethylation-oxidation sequence to generate the desired para-quinone. This step co

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Berkner, Joachim Ernst. "Synthesis and characterization of new organic electrically conducting polymers : part II: Direct carboxylation of sulfolene : part III: Effect of water on PTC systems : part IV: Mechanism of Phase transfer catalytic N-alkylation reactions." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/30715.

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Book chapters on the topic "PTC catalyst"

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Schweinberger, Florian Frank. "Model Catalysts Under Vacuum Conditions." In Catalysis with Supported Size-selected Pt Clusters. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-01499-9_4.

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Schweinberger, Florian Frank. "Cluster Catalysts Under Applied Conditions." In Catalysis with Supported Size-selected Pt Clusters. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-01499-9_5.

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Bernfeld, G. J., A. J. Bird, R. I. Edwards, et al. "Platinum-Group Metals, Alloys and Compounds in Catalysis." In Pt Platinum. Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-662-10278-7_4.

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Essen, L. O., P. D. Brownlie, O. Perisic, M. Katan, and R. L. Williams. "Structural Analysis of the Catalysis and Membrane Association of PLC-δ1." In ACS Symposium Series. American Chemical Society, 1998. http://dx.doi.org/10.1021/bk-1999-0718.ch008.

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Darensbourg, Donald J., Tara J. Decuir, and Joseph H. Reibenspies. "The Use of 1,3,5-Triaza-7-Phosphaadamantane (PTA), A Water-Soluble , Air Stable Ligand, in Organometallic Chemistry and Catalysis." In Aqueous Organometallic Chemistry and Catalysis. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0355-8_6.

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Schweinberger, Florian Frank. "Introduction." In Catalysis with Supported Size-selected Pt Clusters. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-01499-9_1.

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Schweinberger, Florian Frank. "Literature Survey and Theory." In Catalysis with Supported Size-selected Pt Clusters. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-01499-9_2.

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Schweinberger, Florian Frank. "Experimental Methods." In Catalysis with Supported Size-selected Pt Clusters. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-01499-9_3.

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Schweinberger, Florian Frank. "Conclusion and Outlook." In Catalysis with Supported Size-selected Pt Clusters. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-01499-9_6.

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Gonsalvi, Luca, and Maurizio Peruzzini. "Aqueous Phase Reactions Catalysed by Transition Metal Complexes of 7-Phospha-1,3,5-triazaadamantane (PTA) and Derivatives." In Phosphorus Compounds. Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-90-481-3817-3_7.

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Conference papers on the topic "PTC catalyst"

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Sutton, Nathaniel, and Sean Sears. "Nitrite-Based Oxidative Chemical Treatments for Polythionic Acid SCC Mitigation." In CONFERENCE 2024. AMPP, 2024. https://doi.org/10.5006/c2024-21145.

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Abstract Reactive metal sulfides introduce safety and reliability risks to hydroprocessing (and other) refinery units during outages. Self-heating or pyrophoric catalysts are a concern, as is stress corrosion cracking of sensitized stainless-steel equipment open to air. A nitrite-based aqueous treatment has been developed and deployed in the field, which addresses both catalyst pyrophoricity and polythionic acid (PTA) SCC of equipment. This paper will present case studies where refineries have relied solely upon the nitrite-based oxidizing solution for PTASCC mitigation. Prior published labora

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Al-Refaie, A. A., and O. A. Ashiru. "Investigation of Titanium Pipe Rupture in a Chemical Production Reactor." In CORROSION 2004. NACE International, 2004. https://doi.org/10.5006/c2004-04230.

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Abstract A severe catastrophic rupture failure occurred in a spool pipe made of titanium (ASTM B337 grade 2) in an oxidation reactor of the Purified Terephthalic Acid (PTA) production plant. The titanium spool pipe was connected directly to the hot air inlet nozzle of the oxidation reactor - operated at 215 °C and 365.5 psi in a hot air media. The reactor contained para-xylene, acetic acid, a catalyst (Br-, Co++, and Mn++); this mixture was continuously stirred to achieve the PTA formation reaction. A failure analysis investigation was carried out to identify the root-cause of the problem. The

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Ashiru, Oluwatoyin, and Abdullah Al-Refaie. "Pitting Corrosion Problems of Stainless Steels in a PTA Plant." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07196.

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Abstract Severe pitting corrosion problems occurred in a Purified Terephthalic Acid (PTA) production plant. The materials of construction of the various vessels, columns, and piping that are of concern are 316L and 2205-Duplex stainless steels. The process stream consists of acetic acid solvent, para-xylene, and catalyst (Br−, Co++, and Mn++) at high temperature. In some instances, the corrosion pits developed into perforations through piping wall in units made of 316L-stainless steel which led to shutdowns. Failure analysis was undertaken to investigate the cause of the pitting corrosion in t

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Conin, Michael, Daniel Knaf, Luis Fiore, et al. "A Holistic Approach For Near Zero Emission Diesel Vehicles Using A Pre-Turbo-Catalyst-System – Ready For EU 7." In 23rd Stuttgart International Symposium. SAE International, 2023. http://dx.doi.org/10.4271/2023-01-1211.

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<div class="section abstract"><div class="htmlview paragraph">This study shows the newest results of a near-series pre-turbo-catalyst (PTC) system reaching lowest emissions for electrified diesel passenger cars to address future emission legislation. The PTC system is developed using a state-of-the-art tool chain containing 1D &amp; 3D simulation approaches and testing near-series exhaust gas aftertreatment systems under real-driving boundary conditions. The innovative concept of a selective catalytic reduction (SCR) PTC and a PTC bypass path solve the challenge of a thermal ha

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Sano, Taizo, Nobuaki Negishi, Koji Takeuchi, and Sadao Matsuzawa. "Degradation of VOCs With Pt-TiO2 Photocatalyst and Concentrated Sunlight." In ASME 2004 International Solar Energy Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/isec2004-65072.

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A Parabolic trough concentrator (PTC) and a photocatalytic reactor with Pt-deposited TiO2 Photocatalyst were designed and constructed for the degradation of volatile organic compounds (VOCs). The temperature of photocatalyst coated on the sunlight receiver was easily elevated to around 473 K by PTC, and 79% of toluene or 93% of acetaldehyde was removed continuously, when gaseous toluene (15ppm) or acetaldehyde (400ppm) was passed through the reactor. The combination of sunlight concentrator and Pt-TiO2 catalyst exhibited the enhancement of complete degradation of VOCs, the inhibition of deacti

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Khandai, C., Amar Bakare, R. M. Petkar, K. V. R. Babu, Chris Dias, and Alfred Reck. "Application of a Pre-Turbocharger Catalyst (PTC) on an Indian Multi Utility Diesel Vehicle for Meeting BS IV." In SIAT 2011. SAE International, 2011. http://dx.doi.org/10.4271/2011-26-0024.

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Zhan, Guodong David, Bodong Li, Timothy Eric Moellendick, Duanwei He, and Jianhui Xu. "New Catalyst-Free Polycrystalline Diamond with Industry-Record Wear Resistance." In SPE Middle East Oil & Gas Show and Conference. SPE, 2021. http://dx.doi.org/10.2118/204855-ms.

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Abstract PDC drill bits are the primary drilling tools for oil and gas in most of formations. In a PDC drill bit, PDC cutters are key cutting components to engage with these formations. However, there is often a big challenge for today's PDC drill bits when drilling very hard and abrasive formation. The main weakness in the PDC cutter is due to the unavoidable use of metallic catalyst which is used to bond the diamond grains in the PDC cutters. The thermal expansion of the metallic catalysts resulting from high frictional heat at the cutter/rock interface during drilling operation is higher th

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Zhan, Guodong David, Nicholas Lyons, Msalli Al Otaibi, Duanwei He, and Andrew Robertson. "A First Look at 100% Thermally Stable Polycrystalline Diamond (PCD) for Oil & Gas Drilling." In SPE Annual Technical Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/210352-ms.

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Abstract Since the late 1970's, research on the efficiency and cutting life of polycrystalline diamond compact (PDC) cutters identified elevated temperature due to frictional heating as one of the primary accelerants of wear to the diamond cutting edge. Temperatures as low as 700 °C activate the back-conversion process, whereby diamond transforms into graphite, due to the presence of catalytic metal in the diamond structure. The Oil and Gas industry responded by investing years developing technologies to reduce the temperatures that PDC's experience in application via improved hydraulics for c

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Vakkilainen, Aulis, and Reijo Lylykangas. "Particle Oxidation Catalyst (POC) for Diesel Vehicles." In SIAT 2004. SAE International, 2004. http://dx.doi.org/10.4271/2004-28-0047.

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Zhan, Guodong David, Chinthaka Gooneratne, Timothy Eric Moellendick, Duanwei He, Jianhui Xu, and Alawi Alalsayednassir. "Ultra-Strong and Catalyst-Free Polycrystalline Diamond Cutting Materials for One-Run-To-TD Game-Changing Drilling Technology." In International Petroleum Technology Conference. IPTC, 2021. http://dx.doi.org/10.2523/iptc-21342-ms.

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Abstract Polycrystalline diamond compact (PDC) bits have been increasing their application drilling many formations in the past 20+ years. However, their performance in drilling very hard, abrasive and interbedded formations still needs improvement. The main weak point comes from their primary cutting elements, PDC cutters, which still need improvements of wear resistance, impact resistance, and thermal stability. During the traditional manufacturing of the PDC cutters, cobalt catalyst has to be used to lower the pressure and temperature. In this study, we developed an ultra high pressure and

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Reports on the topic "PTC catalyst"

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Wang, Chenyu. Intermetallic PtCo Catalysts with Enhanced Performance and Stability. Office of Scientific and Technical Information (OSTI), 2021. http://dx.doi.org/10.2172/1778737.

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Jongpatiwut, Siriporn, Somchai Osuwan, Thirasak Rirksomboon, and ชมพูนุท พึ่งกลั่น. n-alkane aromatization over modified Pt supported KL zeolites. Chulalongkorn University, 2013. https://doi.org/10.58837/chula.res.2013.94.

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From previous studies, Sn-promoted Pt/KL prepared by vapor-phase co-impregnation exhibited high stability and selectivity to C8-aromatics for n-octane aromatization. Although the Pt/KL has many benefits, one of the serious drawbacks is its sensitivity to sulfur poisoning. Based on previous investigations, the addition of rare earth elements (RE; e.g. Tm, Ce, and Dy) into Pt/KL could improve sulfur tolerance of the catalysts. In this work, the sulfur resistance of PtSn/KL and RE-promoted PtSn/KL has been studied. PtSnRE/KL catalysts with Pt:Sn:RE ratio of 1:1:0.15 were prepared by sequential RE

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Olsen. PR-179-10203-R01 Characterization of Oxidation Catalyst Performance - VOCs and Temperature Variation. Pipeline Research Council International, Inc. (PRCI), 2012. http://dx.doi.org/10.55274/r0010753.

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Oxidation catalysts are typically specified to reduce carbon monoxide (CO), Hazardous Air Pollutants (HAPs) and/or Volatile Organic Compounds (VOCs) from lean-burn engines. The application of catalysts to HAPs and VOC destruction is more recent, so greater effort has been placed on optimizing for CO oxidation than HAPs or VOC oxidation. In general, the catalysts consist of a porous, high surface area -alumina carrier material on a ceramic (typically cordierite) or stainless steel substrate. Although the alumina has some effectiveness in oxidation at high temperature, its primary role here is t

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Gates, B. C. Supercritical catalysts of light hydrocarbon conversion. DOE PETC eighth quartery report, July 1, 1995--September 30, 1995. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/245586.

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Gates, B. C. Superacid catalysis of light hydrocarbon conversion. DOE PETC seventh quarterly progress report, April 1, 1995--July 31, 1995. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/181489.

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