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Relevant bibliographies by topics / Solvent less reaction

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Academic literature on the topic 'Solvent less reaction'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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Journal articles on the topic "Solvent less reaction"

1

Saikia, Monmi, and Jadab C. Sarma. "Baylis–Hillman reaction under solvent-free conditions — Remarkable rate acceleration and yield enhancement." Canadian Journal of Chemistry 88, no. 12 (2010): 1271–76. http://dx.doi.org/10.1139/v10-133.

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A simple and efficient method has been developed for remarkable rate acceleration and yield enhancement of the Baylis–Hillman reaction under solvent-free “neat conditions” and solvent-less isolation of products. Reaction of equimolar quantities of aldehyde and olefin in the presence of 20 mol% of DABCO under neat conditions affords the highest yield in most cases within the shortest reaction time, giving support to the mechanisms of proton transfer in protic and aprotic solvents. Solvent-free conditions are found to be especially fast, selective, and high yielding for aromatic aldehydes.

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Brindaban, C. Ranu. "My journey through a green path." Journal of India Chemical Society Vol. 95, Dec 2018 (2018): 1465–70. https://doi.org/10.5281/zenodo.5644541.

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School of Chemical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700 032, India E-mail: ocbcr@iacs.res.in <em>Manuscript received online 12 October 2018, accepted 18 November 2018</em> The practice of green chemistry in chemical synthesis has received wide attention because of the general awareness of ill effects of chemical pollution in the environment. A chemical reaction is primarily guided by its design, use of solvent, catalyst and energy. The organic solvents are more or less toxic and thus use of alternate green solvents such as water, ionic liquids and

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Dyker, Gerald, та Richard P. Kreher. "Struktur und Reaktivität von isoanellierten heterocyclischen Systemen mit 4nπ- und (4n+2)π-Elektronen, XVII [1] Diels-Aider- und Michael-Additionsreaktionen von 3-Alkoxy-2,4-dihydropyrrolo[3,4-b]indolen mit Ethindicarbonsäuredialkylestern / Structure and Reactivity of Isoannelated Heterocyclic Systems with 4nπ- and (4n+2)π-Electrons, XVII [1] Diels-Alder and Michael Addition Reactions of 3-Alkoxy-2,4-dihydropyrrolo[3,4-b]indoles with Dialkyl Acetylenedicarboxylates". Zeitschrift für Naturforschung B 43, № 12 (1988): 1656–61. http://dx.doi.org/10.1515/znb-1988-1221.

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Abstract The reactions of 2-rm-butyl-3-methoxy-4-methyl-2,4-dihydropyrrolo[3,4-b]indole (3) with dialkyl acetylenedicarboxylates are decisively influenced by the solvent. In the presence of alcohols as protic and polar solvents Michael addition is prefered, while in aprotic and less polar solvents like ether the Diels-Alder reaction is favoured. Based on stereospecific hydrolysis and isotopic labeling dipolar intermediates are discussed. The results are of current interest for mechanistic and theoretical reasons

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Gharehassanlou, Sanaz, and Hamzeh Kiyani. "Synthesis of Isoxazol-5-One Derivatives Catalyzed by Amine-Functionalized Cellulose." Organics 5, no. 4 (2024): 378–94. http://dx.doi.org/10.3390/org5040020.

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In this contribution, propylamine-functionalized cellulose (Cell-Pr-NH2) was employed as the catalyst in the three-component reaction between hydroxylamine hydrochloride and various types of aryl/heteroaryl aldehydes, ethyl acetoacetate/ethyl 4-chloroacetoacetate, or ethyl 3-oxohexanoate. The result of these experiments was the formation of 3,4-disubstituted isoxazol-5(4H)-one heterocycles. The desired five-membered heterocyclic compounds were obtained in good to high yields at room temperature. The investigation of different solvents led us to the conclusion that water is the best solvent to

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Gadhave, Anil G., Sanket B. Shirsath, Amol R. Parhad, Bhagwat K. Uphade, and Dilip S. Aute. "Green and efficient synthesis of 2H-indazolo[2,1-b]phthalazine-triones using PPA-polyborate under solvent-free conditions." INDIAN JOURNAL OF HETEROCYCLIC CHEMISTRY 35, no. 02 (2025): 501. https://doi.org/10.59467/ijhc.2025.35.501.

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Polyphosphoric acid (PPA)-polyborate as a solid acid new catalyst was prepared by the reaction between PPA and polyborate. 2H-Indazolo[2,1-b]phthalazine-1,6,11(13H)-triones were synthesized under solvent-free conditions through one-pot tri-component reaction involving substituted aryl aldehydes, phthalhydrazide, and dimedone in the presence of PPA-polyborate catalyst. The main advantages of this study are good to excellent yields, use of less hazardous chemical, shorter reaction times, gentler reaction conditions, reduced chemical waste, increased energy efficiency, environmentally friendly pa

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Lee, Donald G., Keith C. Brown, and Hasan Karaman. "Oxidation of hydrocarbons. 17. Solvent and substituent effects on the oxidation of styrene derivatives by quaternary ammonium permanganates." Canadian Journal of Chemistry 64, no. 6 (1986): 1054–59. http://dx.doi.org/10.1139/v86-177.

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When alkenes are oxidized by quaternary ammonium or phosphonium permanganates in polar organic solvents, such as acetone, the structures of the cations have little or no effect on the rates of reaction. In less polar solvents, such as methylene chloride or toluene, the rates of reaction are, however, dependent on the identity of the quaternary ammonium or phosphonium ions. It thus appears as if the reacting species may exist as solvent-separated ion pairs in polar solvents and as intimate ion pairs in nonpolar solvents. The rates of reaction are also very sensitive to substituent effects, a no

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Guo, Zhiliang, Ling Ma, Helin Wang, et al. "Less solvent solid state reaction of sodium sulfite and sulfur." Inorganic Chemistry Communications 151 (May 2023): 110619. http://dx.doi.org/10.1016/j.inoche.2023.110619.

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Nagani, Afzal, Moksh Shah, Salman Patel, and M. R. Yadav. "Sustainable synthesis of piperazine analogs using varied energy sources in the petasis reaction: A green chemistry perspective." INDIAN JOURNAL OF HETEROCYCLIC CHEMISTRY 34, no. 03 (2024): 399. http://dx.doi.org/10.59467/ijhc.2024.34.399.

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The Petasis reaction between substituted boronic acids (1a-c), N-Boc-piperazine, and glyoxylic acid in the conventional method of synthesis needs continuous refluxing for 16 h in a solvent like acetonitrile (ACN) to obtain the products. Using the same reactants, the source of energy was changed to microwave irradiation, ultrasonication, or mechanical energy (Trituration) to obtain good yields of the products consuming much less energy and time. Apart from the use of different sources of energy, the solvents as the media of the reactants were also changed. In microwave synthesis, more than 95%

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Suljkanović, Mersiha, Jasmin Suljagić, Edita Bjelić, Ante Prkić, and Perica Bošković. "Chemical Characterization of Terpene-Based Hydrophobic Eutectic Solvents and Their Application for Pb(II) Complexation during Solvent Extraction Procedure." Molecules 29, no. 9 (2024): 2122. http://dx.doi.org/10.3390/molecules29092122.

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Solvents prepared from natural terpenes (menthol and thymol), as H-bond acceptors, and a series of organic acids (chain lengths of 8, 10, and 14 C atoms), as H-bond donors, were characterized and tested as reaction media for liquid–liquid extraction purposes. Due to their high hydrophobicity, they seem to be promising alternatives to conventional (nonpolar and toxic) solvents, since they possess relatively less toxic, less volatile, and consequently, more environmentally friendly characteristics. Assuming that the equilibrium is established between solvent and analyte during a ligandless proce

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Grobe, Joseph, Helmut Schröder, and Norbert Auner. "Silaethene, XIV [1] Bildung und Reaktivität von 1,1-Di-tert-butoxy-2-neopentylsilaethen (tBuO)2Si = CHNp / Silaethenes, XIV [1] Formation and Reactivity of 1,1-Di-tert-butoxy-2-neopentyl Silaethene (tBuO)2Si=CHNp." Zeitschrift für Naturforschung B 45, no. 6 (1990): 785–92. http://dx.doi.org/10.1515/znb-1990-0610.

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The reaction of (tBuO)2Si(Cl)Vi (3) with LitBu has been investigated in pentane or toluene (non-polar) and mixtures of pentane or toluene with THF (polar), respectively, in order to gain information about the influence of substituents and the polarity of the solvent on the reaction mechanism. In accord with earlier results, using Me2Si(Cl)Vi (1) [8] ortBu2Si(Cl)Vi (2) [5] as precursors, the course of reaction in non-polar solvents is dominated by 1,2-elimination of LiCl from the α-lithio intermediate R2Si(Cl)CH(Li)CH2HtBu yielding 1,1,3,3-tetra(tertbutoxy)-1,3-disilacyclobutane (4) via the cor

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Dissertations / Theses on the topic "Solvent less reaction"

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Dubois, Corinne. "Sur les proprietes des couches de surface du lithium dans les accumulateurs a electrolytes organiques aprotiques." Paris 6, 1987. http://www.theses.fr/1987PA066345.

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MAGALHAES, WELINGTON F. "Influence de parametres physico-chimiques sur les reactions du positonium en solution." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13218.

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Francese, Catherine. "Reactions du bromotrifluoromethane en presence de zinc : trifluoromethylations dans les conditions de barbier." Paris 6, 1987. http://www.theses.fr/1987PA066381.

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Vukovic, Vuk. "Synergistic effect of acids and HFIP on Friedel-Crafts reactions of alcohols and cyclopropanes." Thesis, Strasbourg, 2018. http://www.theses.fr/2018STRAF068.

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L'activation catalytique d'alcools vers la formation déshydrative de liaisons chimiques sans pré-activation est devenue un intérêt de recherche majeur au cours des deux dernières décennies. Dans cette thèse, l’effet synergique particulier des acides forts en tant que catalyseurs dans l’hexafluoroisopropanol (HFIP) comme solvant de diverses classes de carbocations instables dans la chimie de Friedel-Crafts a été étudié. Il a été constaté que pour la première fois, les réactions de Friedel-Crafts d'alcools benzyliques primaires fortement désactivés, catalysées par un acide, se déroulaient facile

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RECHSTEINER, BENNO. "Reactions organiques sans solvant activees par les microondes : application a la synthese d'enaminocetones, imidazolines, oxazolines et cyclopropanes." Rennes 1, 1994. http://www.theses.fr/1994REN10030.

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La premiere partie de ce travail est relative a la condensation de derives dicarbonyles avec les amines primaires et secondaires sans solvant et sous activation par les microondes. Cette reaction effectuee dans des recipients ouverts a une puissance d'irradiation determinee, conduit en quelques minutes a des enaminocetones avec d'excellents rendements. L'utilisation de recipients fermes entraine la formation d'acylamines. Dans la deuxieme partie, nous avons etendu notre etude a la condensation de diamines avec les composes dicarbonyles. Nous avons egalement mis en evidence l'influence des cond

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Blanchon, Le Bouhelec-Tribouillois Émilie. "Contribution à la thermodynamique de l'absorption des gaz acides H2S et CO2 dans les solvants eau-alcanolamine-méthanol : mesures expérimentales et modélisation." Thesis, Vandoeuvre-les-Nancy, INPL, 2006. http://www.theses.fr/2006INPL046N/document.

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Ce travail s'inscrit dans le cadre du développement de nouveaux procédés de désacidification de gaz naturel à travers l'étude thermodynamique des équilibres entre les gaz acides (CO2 et H2S) et un solvant mixte. Ce solvant résulte de la combinaison d'un solvant chimique (solution aqueuse de diéthanolamine) et d'un solvant physique (méthanol). Couplant équilibres chimique et physique, la modélisation de ces systèmes nécessite l'élaboration de modèles complexes et une large gamme de données d'équilibre liquide-vapeur. La première partie de ce travail est consacrée à l'acquisition de données expé

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Books on the topic "Solvent less reaction"

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Atkins, Peter. Reactions. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199695126.001.0001.

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Illustrated with remarkable new full-color images--indeed, one or more on every page--and written by one of the world's leading authorities on the subject, Reactions offers a compact, pain-free tour of the inner workings of chemistry. Reactions begins with the chemical formula almost everyone knows--the formula for water, H2O--a molecule with an "almost laughably simple chemical composition." But Atkins shows that water is also rather miraculous--it is the only substance whose solid form is less dense than its liquid (hence ice floats in water)--and incredibly central to many chemical reaction

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Settje, David E. Evil Deeds in High Places. NYU Press, 2020. http://dx.doi.org/10.18574/nyu/9781479803149.001.0001.

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Christians today participate as a significant force in politics, asserting their historic role as arbiters of morality and ethics in the process despite being of very different minds about what that means. Evil Deeds in High Places examines Christian responses to the Watergate affair that brought about the debate over impeachment and resignation of Richard M. Nixon. It demonstrates how Christians contributed to the debate over this moral and ethical crisis, and reveals how the Watergate moment became a turning point in twentieth-century American history for Christian engagement with politics.

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Book chapters on the topic "Solvent less reaction"

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Ramli, Azliana, Mohd Nazari Abu Bakar, Suhaila Sepeai, Ab Malik Marwan Ali, Nafisah Osman, and Wan Izhan Nawawi Wan Ismail. "Effects of Different Ratios of 45% N, N-Dimethylformamide (DMF) Solvent in Reaction with Derived 2D Hybrid Perovskite C6H8N2PbI3 Prepared via Nitrogen-Less Method." In Charting the Sustainable Future of ASEAN in Science and Technology. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-3434-8_40.

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Wen, Chih-Yung, Yazhong Jiang, and Lisong Shi. "Application: Detonations." In Engineering Applications of Computational Methods. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-0876-9_8.

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AbstractDetonation is a shock-induced combustion in which chemical reactions are closely coupled with shock waves. The shock wave compresses the reactant with an abrupt increase in temperature and pressure, initiating the reactants to be burnt into products. The intense heat release permits the high propagating speed of the shock wave to be sustained. It is fundamental research related to both the safety industry and propulsion systems. For most explosive mixtures, detonation wave speeds are formulated by Chapman–Jouguet (CJ) theory. Typical detonation velocities for gaseous mixtures generally

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Buchem, Ilona, Lukas Brömmling, and Niklas Bäcker. "“NAO Says”: Designing and Evaluating Multimodal Playful Interactions with the Humanoid Robot NAO." In Digital Interaction and Machine Intelligence. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-37649-8_14.

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AbstractNAO is a small humanoid robot which affords multimodal interaction through speech, non-verbal sounds, visual pattern recognition, gestures and touch. NAO can be animated to move its head, arms, legs in space and to manifest emotional reactions through dialogue, sounds, body movements and light effects. This paper reports on the design, implementation, play-testing and evaluation of a multimodal, playful interaction with NAO in two pre-studies and one pilot study with altogether 209 participants of all age groups. The application “NAO says” was designed based on the popular imitation ga

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Tomar, Parul, and Deepali Jain. "Green solvents." In Solvents - Dilute, Dissolve, and Disperse [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.1002491.

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Prolonged use of solvents has harmful impacts on the environment, and entire surviving things. One of the most crucial demands of green chemistry is the cutting down of solvent use or substituting with less hazardous ones. Green solvents are explored as an alternative to traditional solvents. They are specified by low toxicity, easy availability re-usability extraordinary efficiency, environmentally friendly reaction medium, non-flammability, increased reactions rate, decrease reaction temperatures as well greater selectivity, and non-volatility. There are numerous applications of green solven

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Ikariya, Takao, and Ryoji Noyori. "Advances in Homogeneous, Heterogeneous, and Biphasic Metal-Catalyzed Reactions in Dense-Phase Carbon Dioxide." In Green Chemistry Using Liquid and Supercritical Carbon Dioxide. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780195154832.003.0006.

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The use of compressed carbon dioxide as a reaction medium, either as a liquid or a supercritical fluid (sc CO2), offers the opportunity not only to replace conventional hazardous organic solvents but also to optimize and potentially control the effect of solvent on chemical synthesis. Although synthetic chemists, particularly those employing catalysis, may be relative latecomers to the area of supercritical fluids, the area of catalysis in carbon dioxide has grown significantly since around 1975 to the point that a number of excellent reviews have appeared (Baiker et al., 1999; Buelow et al.,

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Leitner, Walter. "Fluorous Phases and Compressed Carbon Dioxide as Alternative Solvents for Chemical Synthesis: A Comparison." In Green Chemistry Using Liquid and Supercritical Carbon Dioxide. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780195154832.003.0009.

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The principal goal of basic research in chemical synthesis is the development of efficient tools for functional group transformations and for the assembly of building blocks during the construction of molecules with increasing complexity. Traditionally, new approaches in this area have focused on the quest for new reaction pathways, reagents, or catalysts. Comparably less effort has been devoted to utilize the reaction medium as a strategic parameter, although the use of solvents is often crucial in synthetically useful transformations. The first choice for a solvent during the development of

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Doraiswamy, L. K. "Rates and Equilibria in Organic Reactions : The Thermodynamic and Extrathermodynamic Approaches." In Organic Synthesis Engineering. Oxford University Press, 2001. http://dx.doi.org/10.1093/oso/9780195096897.003.0007.

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In any reversible reaction such as . . . vA A + vB B ↔ vR R + vS S [2.1] . . . the system inevitably moves toward a state of equilibrium, or maximum probability. This equilibrium state is very important in analyzing chemical reactions because it defines the limit to which any reaction can proceed. Organic reactions, particularly those constituting a synthetic scheme for a fine chemical, usually involve molecules reacting in the liquid phase. The effects of reactant structure and of the solvent (medium) in which the reaction occurs (the solvation effects) are not included in the conventional ma

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Nitzan, Abraham. "Chemical Reactions In Condensed Phases." In Chemical Dynamics in Condensed Phases. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780198529798.003.0021.

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Understanding chemical reactions in condensed phases is essentially the understanding of solvent effects on chemical processes. Such effects appear in many ways. Some stem from equilibrium properties, for example, solvation energies and free energy surfaces. Others result from dynamical phenomena: solvent effect on diffusion of reactants toward each other, dynamical cage effects, solvent-induced energy accumulation and relaxation, and suppression of dynamical change in molecular configuration by solvent induced friction. In attempting to sort out these different effects it is useful to note th

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Noyori, Ryoji, and Takao Ikariya. "Carbon Dioxide as a Reactant and Solvent in Catalysis." In Green Chemistry Using Liquid and Supercritical Carbon Dioxide. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780195154832.003.0007.

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An increased awareness of global atmospheric carbon levels and heightened efforts to recover industrial emissions prior to their release into the environment has led to the availability of an unprecedented amount of carbon dioxide for industrial utilization. Unfortunately, chemical utilization of carbon dioxide as an industrial feedstock is limited by thermodynamic and kinetic constraints. Toxic carbon monoxide, the main competitor in many processes, is used in industry instead because CO2 is perceived to be less reactive and its efficient catalytic conversion has remained elusive. The major c

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Nelson, William M. "Green Solvents in Green Chemistry." In Green Solvents for Chemistry. Oxford University PressNew York, NY, 2003. http://dx.doi.org/10.1093/oso/9780195157369.003.0004.

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Abstract The criteria for what determines a green solvent will depend upon the use and ultimate fate of the solvent during the chemical process. Likewise, the determination of what constitutes appropriate solvent usage in green chemistry might include any of the following actions. Redesign of the exact chemical nature of the solvent via synthesis; Identification of equally useful but less toxic substitutes of another chemical class for use instead of a “traditional” solvent; or Reduction/elimination of the use of solvents in particular chemical processes. The discussion of green solvents will

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Conference papers on the topic "Solvent less reaction"

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Nasr-El-Din, H. A., A. Y. Al-Humaidan, B. A. Fadhel, and R. Saleh. "Effect of Acid Additives on the Efficiency of Dissolving Iron Sulfide Scale." In CORROSION 2000. NACE International, 2000. https://doi.org/10.5006/c2000-00439.

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Abstract Iron sulfide scale causes many operational problems in the oil industry. For example, accumulation of iron sulfide particles around the wellbore area can result in loss of injectivity or productivity of the wells. Hydrochloric acid can be used to remove some iron sulfide deposits. However, this process produces hydrogen sulfide; a toxic and corrosive gas. In addition, hydrogen sulfide reacts with ferric ions and precipitates elemental sulfur. Elemental sulfur is insoluble in acids, practically impossible to dissolve, corrosive, and can damage the formation. Hydrogen sulfide reacts wit

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Tedesco, Carolina Colombo, John R. Kitchin, and Carl D. Laird. "A Computational Framework for Cyclic Steady-State Simulation of Dynamic Catalysis Systems: Application to Ammonia Synthesis." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.105384.

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Dynamic or Programmable Catalysis is an innovative strategy to improve heterogeneous catalysis processes by modulating the binding energies (BE) of adsorbates on a catalytic surface. The technique enables the periodic favoring of different reaction steps, overcoming limitations imposed by the Sabatier Principle and allowing for higher overall reaction rates, otherwise unattainable. Previously, we implemented a simultaneous simulation approach using the algebraic modeling language Pyomo and the solver IPOPT to obtain cyclic steady state results for a unimolecular reactive system with up to four

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Kamal, Hamzah, Prakoso Noke Fajar, Ghozali Farid, et al. "Resolving Multiple Formation Damage Mechanism in Carbonate Reservoir Through Systematic Approach Using Combination of Aromatic Solvent and Less Aggressive Acid." In SPE/IATMI Asia Pacific Oil & Gas Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/205816-ms.

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Abstract There is no well operation that is truly non-damaging. Any invasive operation, even production phase itself, may be damaging to well productivity. An interesting case was found in L-Field which is located in South Sumatra, Indonesia. All four wells are predicted to cease to flow after five-year production and artificial lift have to be installed to prevent steep decline in oil production. Unfortunately, all of wells’ productivity index (PI) decreased post well intervention and therefore, couldn’t achieve target. The PI was continuously decreasing during production phase and aggravated

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Charushin, A., M. Muhammad, I. Al Balushi, S. Albalushi, I. Hassan, and H. C. Marine. "Innovative Solution to Dissolve Highly Challenging Iron Sulfide Scales." In International Petroleum Technology Conference. IPTC, 2024. http://dx.doi.org/10.2523/iptc-23475-ea.

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Abstract Iron sulfide scales are an inorganic deposition, highly acid soluble, that block oil and gas wells, and are usually formed from H2S and reservoir/well reactive iron reactions, since HCl reaction with iron sulfide generates toxic and corrosive H2S gas, several alternative dissolvers including simple organic acids and more complex chelates have been utilized, our main objective is to evaluate the efficiency of a new synergetic of alternative dissolvers to provide economically satisfying treatments in Iron Sulfide scale defected wells. To judge the dissolution capabilities of the new sol

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Pearson, Jeremy, George Miller, and Mikael Nilsson. "High Linear Energy Transfer Degradation Studies Simulating Alpha Radiolysis of TRU Solvent Extraction Processes." In ASME 2013 15th International Conference on Environmental Remediation and Radioactive Waste Management. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icem2013-96365.

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Treatment of used nuclear fuel through solvent extraction separation processes is hindered by radiolytic damage from radioactive isotopes present in used fuel. The nature of the damage caused by the radiation may depend on the radiation type, whether it be low linear energy transfer (LET) such as gamma radiation or high LET such as alpha radiation. Used nuclear fuel contains beta/gamma emitting isotopes but also a significant amount of transuranics which are generally alpha emitters. Studying the respective effects on matter of both of these types of radiation will allow for accurate predictio

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Jordan, Myles M., Helen Williams, Sandra Linares-Samaniego, and Dario M. Frigo. "New Insights on the Impact of High Temperature Conditions (176°C) on Carbonate and Sulphate Scale Dissolver Performance." In SPE International Oilfield Scale Conference and Exhibition. SPE, 2014. http://dx.doi.org/10.2118/spe-169785-ms.

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Abstract Scale-dissolver technology has been developed and applied with varying degrees of success over the past few years to remove carbonate and the more challenging sulphate/sulphide scales from production tubing and process equipment. It can often seem a much safer, more cost-effective remediation approach than physical removal, in particular, in the new generation of HP/HT fields, where any physical well intervention carries high risk, while the high temperatures would normally be beneficial in enhancing scale solubility and dissolution rate. The current paper reports dissolution characte

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Burge, Scott R. "Automated Analysis of Trichloroethene and Chloroform." In ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4648.

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Chloroform and trichloroethene (TCE) are two organic contaminants commonly encountered in ground water. TCE, formerly a common cleaning solvent, is usually associated with contaminated aquifers. Chloroform is usually associated with the chlorination of municipal water. The remediation level for TCE in aquifers is typically 5 ppb, therefore, the analytical method employed for monitoring these analytes must be capable of detecting and quantifying the analytes in the low ppb concentration range. The most common analytical methodology for the determination of TCE or chloroform in water is a purge

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van Vliet, E., R. O. Fox, J. J. Derksen, and S. B. Pope. "Treatment of Fast Chemistry in FDF/LES: In Situ Adaptive Tabulation." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-3119.

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The feasibility to implement fast-chemistry reactions in a three-dimensional large eddy simulation (LES) of a turbulent reacting flow using a filtered density function (FDF) technique is studied. Low-density polyethylene (LDPE) is used as an representative reaction due to the stiff nature of the ordinary differential equation (ODE’s) describing the kinetics. In FDF/LES, the chemistry needs to be evaluated many times for a large number of fictitious particles that are tracked in the flow, and therefore a constraint is put to the CPU time needed to solve the kinetics. Pope (1997) developed an in

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Rubini, Dylan, Nikolas Karefyllidis, Liping Xu, Budimir Rosic, and Harri Johannesdahl. "Accelerating the Development of a New Turbomachinery Concept in an Environment With Limited Resources and Experimental Data: Challenges." In ASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/gt2022-80698.

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Abstract This paper presents the requirements for a tailored design ecosystem to accelerate the development of a new turbo-reactor for hydrocarbon cracking. The objective of this novel turbo-reactor concept is to eliminate carbon emissions from the radiant section of the plant. However, the time constraint for this energy- and carbon-intensive cracking industry to fully decarbonize is severely restricted. Therefore, the development of this new concept must be accelerated to a market-ready product within a limited time frame. However, the novelty of the design requirements and the unique level

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Klewer, Christian, Jens Kuehne, Johannes Janicka, and Oliver Kornow. "Numerical Simulation of Combustion Induced Noise Using LES and Computational Aeroacoustics." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22836.

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Many technical combustion devices are susceptible to thermoacoustic instabilities. In this work, the noise emission by a turbulent jet flame is analyzed by means of a hybrid LES/CAA (Large Eddy Simulation/Computational Aero Acoustics) approach as a first step towards a numerical investigation of combustion instability. The hybrid LES/CAA approach is based on a LES of the reactive flow utilizing a low Mach number formulation. Within the CAA part of the simulations, linearized Euler equations (LEE) are solved. A simplified formulation to describe the thermoacoustic sound sources is extracted fro

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Reports on the topic "Solvent less reaction"

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Debuque-Gonzales, Margarita, Charlotte Justine Diokno-Sicat, John Paul Corpus, Robert Hector Palomar, Mark Gerald Ruiz, and Ramona Maria Miral. Fiscal Effects of the COVID-19 Pandemic: Assessing Public Debt Sustainability in the Philippines. Philippine Institute for Development Studies, 2022. https://doi.org/10.62986/dp2022.17.

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This paper examines whether the current level of debt in the country, given the national government’s fiscal policy and plans, remains on a sustainable path. By end-2021, a year after the peak of the public health and economic crisis brought about by the COVID-19 pandemic, the country’s debt-to-GDP ratio had already climbed to 60.5 percent, over 20 percentage points above pre-pandemic levels and slightly above the government’s indicative cap. Several empirical exercises were performed in this paper to investigate the country’s fiscal solvency, namely by (1) providing a historical decomposition

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