Academic literature on the topic 'Raney nickel'

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Journal articles on the topic "Raney nickel"

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Chan-Shing, Elisa Soazara, Denys Boucher та Jean Lessard. "The electrochemical reduction of α-nitrocumene in a protic and basic medium on large surface area (porous) electrodes: electronation-protonation or electrocatalytic hydrogenation?" Canadian Journal of Chemistry 77, № 5-6 (1999): 687–94. http://dx.doi.org/10.1139/v99-035.

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The electrochemical reduction of α-nitrocumene (1) has been investigated under controlled potential, at a mercury pool cathode and at Raney metal (Raney nickel, Raney cobalt and Devarda copper) and fractal nickel electrodes in basic aqueous ethanol. A comparison of the product distribution from the reduction at Hg (electronation-protonation (EP) mechanism) and that from the reduction at Raney metals and fractal nickel has shown that both the electrocatalytic hydrogenation (ECH) and EP mechanisms can be involved at large surface area (porous) transition metal electrodes in a basic protic medium
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Linnekoski, J. A., A. O. I. Krause, Jari Keskinen, J. Lamminen, and T. Anttila. "Processing of Raney-Nickel Catalysts for Alkaline Fuel Cell Applications." Journal of Fuel Cell Science and Technology 4, no. 1 (2006): 45–48. http://dx.doi.org/10.1115/1.2397140.

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Platinum and other platinum group metals, either as singles or in combinations, have been preferred for use in low temperature fuel cells, mainly alkaline fuel cells (AFCs), polymer membrane electrolyte fuel cells (PEMs), and direct methanol fuel cells (DMFCs), for hydrogen oxidation reaction (HOR). However, also the Raney-nickel catalyst, which is among the most active non-noble metals for the HOR, has been the target of interest, especially in AFCs. However, electrodes with nonsupport Raney-nickel catalysts have been reported to suffer from insufficient conductivity. So, in this work, in ord
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Bhaumik, Kankan, and K. G. Akamanchi. "Nitroarene reduction using Raney nickel alloy with ammonium chloride in water." Canadian Journal of Chemistry 81, no. 3 (2003): 197–98. http://dx.doi.org/10.1139/v03-021.

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Aromatic nitroarenes are reduced in high yields using a user-friendly combination of Raney nickel alloy and ammonium chloride in water at 80–90°C.Key words: Raney nickel alloy, nitroarenes reduction, ammonium chloride, water.
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Thesner, CJ, A. Falch, G. Cornelia, and CE Van Sittert. "Using site occupation disorder to build bulk structures of Ni1-xAlx." Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie 40, no. 1 (2022): 174–79. http://dx.doi.org/10.36303/satnt.2021cosaami.33.

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Raney nickel shows potential as an electrocatalyst for the oxygen evolution reaction (OER). However, the catalytic activity of Raney nickel varies with its properties. These properties are related to the composition of the bimetallic precursor used to synthesise Raney nickel. The bimetallic precursor consists of a combination of bimetallic phases. Various studies have been done on the well-known bimetallic phases, namely, Ni2Al3, NiAl and NiAl3. However, to get a more comprehensive understanding of the influence of the bimetallic precursor on the properties of Raney nickel, a larger spectrum o
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Bossányi, François, Chakib Ameziane Hassani, Hugues Ménard, and Jean Lessard. "Isotherme d'adsorption du phénanthrène et de ses dérivés hydrogénés sur du nickel de Raney." Canadian Journal of Chemistry 67, no. 3 (1989): 365–68. http://dx.doi.org/10.1139/v89-059.

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The adsorption isotherms of phenanthrene and its hydrogenated derivatives, of naphthalene, and of tetralin on Raney nickel have been determined by chromatographic studies. The adsorption of these molecules on Raney nickel depends on the number of π electrons and on the position and orientation of hydrogen atoms that can interfere with the interaction of the π electrons with the catalyst. Keywords: adsorption, phenanthrene, chromatographic studies.
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Lu, Shuliang, Jiajia Wu, Hui Peng, and Yong Chen. "Carbon-Supported Raney Nickel Catalyst for Acetone Hydrogenation with High Selectivity." Molecules 25, no. 4 (2020): 803. http://dx.doi.org/10.3390/molecules25040803.

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Catalysts with high selectivity play key roles in green chemistry. In this work, a granular Raney Ni catalyst using carbon as support (Raney Ni/C) was developed by mixing phenolic resin with Ni-Al alloy, conducting carbonization at high temperature, and leaching with alkaline liquor. The as-prepared Raney Ni/C catalyst is suitable for use in fix-bed reactors. Moreover, it shows high activity and selectivity for catalytic acetone hydrogenation. For instance, at the reaction temperature of 120 °C, the conversion of acetone can reach up to 99.9% and the main byproduct methyl isobutylcarbinol (MIB
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Mahdavi, Behzad, Przemyslaw Los, Marie Josée Lessard, and Jean Lessard. "A comparison of nickel boride and Raney nickel electrode activity in the electrocatalytic Hydrogenation of Phenanthrene." Canadian Journal of Chemistry 72, no. 11 (1994): 2268–77. http://dx.doi.org/10.1139/v94-289.

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The electrocatalytic activity of nickel boride in the electrocatalytic hydrogenation (ECH) of phenanthrene in ethylene glycol–water at 80 °C has been compared to that of Raney nickel and fractal nickel. The intrinsic activity of the electrode material (real electrode activity) is the same for nickel boride and Raney nickel electrodes and is lower for fractal nickel electrodes. The apparent electrode activity of nickel boride pressed powder electrodes (Ni2B electrodes) is less than that of codeposited Raney nickel (RaNi) electrodes and pressed powder fractal nickel/Raney nickel (Ni/RaNi = 50/50
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Sakharov, Maxim, Kamila Koledina, and Irek Gubaydullin. "Optimal Control of Hydrocarbons’ Hydrogenation with Catalysts." Mathematics 12, no. 22 (2024): 3570. http://dx.doi.org/10.3390/math12223570.

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In this paper, the optimal control problem of hydrocarbons’ hydrogenation was investigated in the presence of two catalysts—Nickel–Kieselguhr and Raney Nickel. This multistage chemical reaction holds significant practical importance, particularly in the production of high-density fuels. The optimal control problem was reformulated as a nonlinear global optimization problem and addressed using a modified Mind Evolutionary Computation algorithm. The proposed modifications include methods designed to ensure solution feasibility and ease of practical implementation. Using the proposed method, the
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Bradke, M. V., W. Schnurnberger, and I. Seybold. "Surface microstructure on Raney nickel catalysts." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 4 (1990): 272–73. http://dx.doi.org/10.1017/s0424820100174497.

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Raney nickel is a favorite electrocatalyst for alkaline water electrolysis and fuel cells. The good electrochemical properties of this material result from its very fine porosity giving the electrodes a large effective surface. Usually the microstructure is formed by chemical etching of a nickel alloy, leaving back a highly porous electrode consisting of nearly pure nickel. It is well known that the total effective surface can considerably vary depending on the etching process, but up to now the understanding of the influence of all etching parameters on the resulting pore structure is quite a
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Rodiansono, Rodiansono, Maria Dewi Astuti, Dwi Rasy Mujiyanti, and Uripto Trisno Santoso. "Selective Hydrogenation of Sucrose into Sugar Alcohols over Supported Raney Nickel-Based Catalysts." Indonesian Journal of Chemistry 19, no. 1 (2019): 183. http://dx.doi.org/10.22146/ijc.31319.

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Selective hydrogenation of sugars (e.g. sucrose, cellobiose, glucose, fructose, xylose, arabinose) into sugar alcohols (sorbitol, mannitol, xylitol, arabitol) can be achieved by means of supported Raney Ni-based catalysts. Various supporting materials such as the layered structure of clay (e.g. bentonite, taeniolite, smectite), metal oxides (e.g. Nb2O5, ZrO2, Al2O3), and conventional supports (e.g. carbon, silica, zeolite (JRC-SZ1)) were employed to obtain high performance of supported Raney Ni-based catalysts. The conventional Raney Ni, Raney Ni/AlOH, and Ni-NP with relatively high dispersion
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Dissertations / Theses on the topic "Raney nickel"

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Knies, Sonja. "Herstellungsprozess und Mikrostruktur von aktivierten Nickelkatalysatoren." [S.l. : s.n.], 2001. http://elib.tu-darmstadt.de/diss/000121/.

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Sillitto, Stephen M. A. "Rapid solidification of sprayed Raney nickel electrocatalytic coatings." Thesis, Keele University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.344095.

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Gros, Joëlle. "Obtention et caractérisation de nouveaux alliages précurseurs de nickel de Raney." Grenoble 1, 1987. http://www.theses.fr/1987GRE10162.

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Gros, Joëlle. "Obtention et caractérisation de nouveaux alliages précurseurs de nickel de Raney." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37605713v.

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Hanover, Karl Frederic. "The hydrogenation of glucose with Raney-nickel : an examination of the side reactions /." Thesis, Connect to this title online; UW restricted, 1987. http://hdl.handle.net/1773/5514.

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Cooper, Matthew. "Electrocatalysis of the Oxidation of Ammonia by Raney Nickel, Platinum and Rhodium." Ohio University / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1127167561.

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Gavroy, Delphine. "Hydrogénation continue de l'adiponitrile sur nickel de Raney dans une colonne à bulles." Toulouse, INPT, 1993. http://www.theses.fr/1993INPT003G.

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Les colonnes à bulles sont couramment utilisées dans l'industrie pour mettre en oeuvre des réactions telles que les hydrogénations, les chlorations ou les oxydations. Cependant, on ne sait pas dans quelle mesure et de quelle manière l'hydrodynamique, le transfert gaz/liquide, la cinétique ainsi que leurs éventuels couplages influencent les performances de ces réacteurs. C'est pourquoi il est important de mettre en place une colonne à bulles sous pression pouvant éventuellement être munie d'un tube interne pour créer une circulation du liquide. Sa souplesse de fonctionnement permet de faire var
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El-Alj, Khalid. "Réduction catalytique en phase liquide du parachloronitrobenzène sur métaux de Raney à base nickel." Grenoble 1, 1990. http://www.theses.fr/1990GRE10107.

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La reduction catalytique en phase liquide du p-chloronitrobenzene a ete etudiee sur nickel de raney dans le but d'obtenir selectivement la p-chloroaniline en evitant la reaction d'hydrodechloration. Par la mise en evidence des intermediaires reactionnels et l'etude de leur reactivite, le mecanisme de la reaction a ete precise, en particulier les differentes etapes, paralleles et consecutives, chimiques et catalytiques, ainsi que les differentes regions cinetiques. Le milieu reactionnel a une influence sur les equilibres d'adsorption des composes et par consequent sur le mecanisme, modifiant ai
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Chade, Daniel Szymon. "Performance and reliability studies of Atmospheric Plasma Spraying Raney nickel electrodes for alkaline electrolysers." Thesis, University of Strathclyde, 2014. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25532.

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This PhD main aim was the examination of the Atmospheric Plasma Spraying Raney nickel electrodes samples with strong emphasis on electrochemical characterisation and investigation of the degradation/deactivation mechanisms which occur within the electrodes structure. Nowadays research in alkaline electrolysis mainly aims to improve efficiency, extend durability and decrease the price of electrolyser units. One of the methods to achieve all of these goals is the development of novel electrode types. Raney nickel electrodes manufactured by Force Technology (Denmark) using a novel atmospheric pla
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Djaouadi, Djamal. "Réduction du valéronitrile en phase liquide sur des catalyseurs à base de nickel de Raney." Grenoble 1, 1993. http://www.theses.fr/1993GRE10006.

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La reduction catalytique en phase liquide du valeronitrile a ete etudiee sur nickel de raney dans le but d'obtenir selectivement l'amine primaire. L'effet de differents parametres de reaction sur la vitesse d'hydrogenation et la selectivite a ete examine et a permis de confirmer le reseau reactionnel complexe avec reversibilite des reactions. Des catalyseurs non dopes ou promus avec des elements metalliques (cr, fe, co, mo, ti. . . ) ont ete prepares a partir des phases metallurgiques ni#2al#3 ou nial#3. Les alliages et les catalyseurs ont ete caracterises par analyse chimique, stem-edx, xps,
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Books on the topic "Raney nickel"

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Kaur, Navjeet. Raney Nickel-Assisted Synthesis of Heterocycles. Elsevier Science & Technology Books, 2022.

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Raney Nickel-Assisted Synthesis of Heterocycles. Elsevier, 2022. http://dx.doi.org/10.1016/c2021-0-01794-6.

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Kaur, Navjeet. Raney Nickel-Assisted Synthesis of Heterocycles. Elsevier Science & Technology, 2022.

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Devred, Francois. Nanostructural Study Of Raney-type Nickel Catalysts. Delft Univ Pr, 2004.

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Rausch, Sven. Herstellung und Charakterisierung von Raney-Nickel-Elektroden und Theorie poröser Elektroden. 1993.

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Book chapters on the topic "Raney nickel"

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Dworak, R., K. Lohrberg, and R. MüLler. "Lurgi’s Experience with Steel and Raney-Nickel as Cathode Material." In Modern Chlor-Alkali Technology. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2880-3_22.

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Nagai, Masatoshi, Hideo Urimoto, Kazuya Uetake, Noriyuki Sakikawa, and Richard D. Gonzalez. "Desulfurization of Benzonaphthothiophenes and Dibenzothiophene with a Raney Nickel Catalyst." In Advances in Chemistry. American Chemical Society, 1987. http://dx.doi.org/10.1021/ba-1988-0217.ch020.

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Schweizer, Sabine, Robin Chaudret, Theodora Spyriouni, John Low, and Lalitha Subramanian. "Influence of the Precursor Composition and Reaction Conditions on Raney-Nickel Catalytic System." In Foundations of Molecular Modeling and Simulation. Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-1128-3_8.

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Delair, Philippe, André Jean, and Jean Lessard. "The Efficient Electrochemical Reduction of Aliphatic Nitro Compounds to Amines in Neutral and Basic Media at Raney Nickel and Devarda Copper Electrodes." In Electroorganic Synthesis. Routledge, 2023. http://dx.doi.org/10.1201/9780203758571-18.

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Drabowicz, J., D. Krasowska, and J. Wicha. "Using Raney Nickel." In Alkanes. Georg Thieme Verlag KG, 2009. http://dx.doi.org/10.1055/sos-sd-048-00134.

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Chessum, N., S. Couty, and K. Jones. "Using Raney Nickel." In Alkanes. Georg Thieme Verlag KG, 2009. http://dx.doi.org/10.1055/sos-sd-048-00186.

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Ramón, D. J., and M. Yus. "Using Raney Nickel Catalyst." In 1,3-Dienes. Georg Thieme Verlag KG, 2009. http://dx.doi.org/10.1055/sos-sd-046-00309.

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von Angerer, S. "Reduction with Raney Nickel." In Science of Synthesis Knowledge Updates KU 2011/1. Georg Thieme Verlag KG, 2011. http://dx.doi.org/10.1055/sos-sd-116-00394.

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Harcken, C. "Reduction Using Raney Nickel." In Aldehydes. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-025-00093.

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"The Raney® -Nickel." In Catalysis of Organic Reactions. CRC Press, 2000. http://dx.doi.org/10.1201/9781482270754-10.

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Conference papers on the topic "Raney nickel"

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Gond, S., and A. Mishra. "Enhancing Hydrogen Evolution Efficiency in Alkaline Water Electrolysis Using Optimized Raney Nickel Coatings on Stainless Steel Electrodes." In ADIPEC. SPE, 2024. http://dx.doi.org/10.2118/222831-ms.

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Abstract Hydrogen, as a clean and high-energy-density fuel, holds immense promise for future energy systems. The aim of this study is to enhance the efficacy and durability of hydrogen evolution reactions (HER) in alkaline water electrolysis by optimizing Raney Nickel coatings on stainless steel electrodes. This work aims to reduce costs and improve the performance of electrolysis systems, making hydrogen production more feasible for large-scale applications. The study involved the electrodeposition of Raney Nickel on stainless steel substrates using a modified Watt’s bath. The pretreatment pr
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Liu, T., R. Reißner, G. Schiller, and A. Ansar. "Plasma Sprayed Raney Nickel Coatings for Hydrogen Production by Alkaline Water Electrolysis." In ITSC2018, edited by F. Azarmi, K. Balani, H. Li, et al. ASM International, 2018. http://dx.doi.org/10.31399/asm.cp.itsc2018p0660.

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Abstract Plasma sprayed coatings of Raney nickel alloys developed as electrodes for hydrogen evolution electrodes in alkaline media, exhibit poor resistance to electrochemical erosion. The aim of this work is to develop an understanding of the correlation between plasma spray process parameters and coating quality and with that improve the electrochemical performance of the coatings. Air plasma spraying with TriplexPro gun was performed using NiAlMo powders. Plasma parameters were varied and particle inflight velocity and temperature was measured by Accuraspray. Coatings were developed for con
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Ma, J., and R. Summons. "Useful or Not Useful? the Challenges and Benefits of Raney–Nickel Desulfurization Applied to Modern Sediments." In IMOG 2023. European Association of Geoscientists & Engineers, 2023. http://dx.doi.org/10.3997/2214-4609.202333061.

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Nielsen, P. T., T. Mathiesen, J. K. Kristensen, L. Hilbert, and L. Yde. "Atmospheric Plasma Spraying of Electrodes for Conversion of Electricity to Hydrogen by High Temperature Alkaline Electrolysis of Water." In ITSC2011, edited by B. R. Marple, A. Agarwal, M. M. Hyland, et al. DVS Media GmbH, 2011. http://dx.doi.org/10.31399/asm.cp.itsc2011p0338.

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Abstract Energy obtained by wind turbines can be foreseen to constitute a significant part of the future energy sources. A major challenge is however the large variation over time in wind energy production. Energy conversion from electricity to storable energy is therefore a key technology to master, and it is therefore important to develop compact, reliable, cheap and energy efficient equipment for this. An obvious solution is production of hydrogen based on water alkaline electrolysis. In the work presented the atmospheric plasma spraying (APS) of Raney nickel (50/50 Ni/Al) was used to devel
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Reports on the topic "Raney nickel"

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Stalker, L., and P. Philip. Organosulphur Compounds in Coals as Determined by Reaction with Raney Nickel and Microscale Pyrolysis Techniques; Quarterly report, January-March, 1996. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/630855.

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Stalker, L., and P. Philp. Organosulfur compounds in coals as determined by reaction with Raney nickel and microscale pyrolysis techniques. Quarterly report, July--September 1996. Office of Scientific and Technical Information (OSTI), 1998. http://dx.doi.org/10.2172/569053.

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Stalker, L., and R. P. Philp. Organosulphur compounds in coals as determined by reaction with Raney nickel and microscale pyrolysis techniques. Quarterly report, 1 July 1995--31 October 1995. Office of Scientific and Technical Information (OSTI), 1995. http://dx.doi.org/10.2172/211572.

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Philp, R. P., and L. Stalker. Organosulphur compounds in coals as determined by reaction with Raney nickel and microscale pyrolysis techniques. Quarterly report, January 1, 1995--March 31, 1995. Office of Scientific and Technical Information (OSTI), 1995. http://dx.doi.org/10.2172/95509.

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Philp, R. P. Organosulphur compounds in coals as determined by reaction with Raney nickel and microscale pyrolysis techniques. Fifth quarterly report, October 1, 1995--December 31, 1995. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/249208.

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