Bibliografías temáticas / Reactive processes

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Literatura académica sobre el tema "Reactive processes"

Autor: Grafiati

Publicado: 11 de enero de 2025

Última modificación: 19 de julio de 2025

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Artículos de revistas sobre el tema "Reactive processes"

Stichlmair, Johann, and Thomas Frey. "Reactive Distillation Processes." Chemical Engineering & Technology 22, no. 2 (1999): 95–103. http://dx.doi.org/10.1002/(sici)1521-4125(199902)22:2<95::aid-ceat95>3.0.co;2-#.

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Georgievska, Sonja, and Suzana Andova. "Testing Reactive Probabilistic Processes." Electronic Proceedings in Theoretical Computer Science 28 (June 26, 2010): 99–113. http://dx.doi.org/10.4204/eptcs.28.7.

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Noeres, C., E. Y. Kenig, and A. Górak. "Modelling of reactive separation processes: reactive absorption and reactive distillation." Chemical Engineering and Processing: Process Intensification 42, no. 3 (2003): 157–78. http://dx.doi.org/10.1016/s0255-2701(02)00086-7.

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Kaminski, Clemens. "Fluorescence Imaging of Reactive Processes." Zeitschrift für Physikalische Chemie 219, no. 6-2005 (2005): 747–74. http://dx.doi.org/10.1524/zpch.219.6.747.65706.

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Jarrett, Matthew A., Ansley Tullos Gilpin, Jillian M. Pierucci, and Ana T. Rondon. "Cognitive and reactive control processes." International Journal of Behavioral Development 40, no. 1 (2015): 53–57. http://dx.doi.org/10.1177/0165025415575625.

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Attention-deficit/hyperactivity disorder (ADHD) can be identified in the preschool years, but little is known about the correlates of ADHD symptoms in preschool children. Research to date suggests that factors such as temperament, personality, and neuropsychological functioning may be important in understanding the development of early ADHD symptomatology. The current study sought to extend this research by examining how cognitive and reactive control processes predict ADHD symptoms. Data were drawn from a larger study that measured the cognitive, social, and emotional functioning of preschool children. Eighty-seven children (aged 4–6 years) were evaluated using teacher report and laboratory task measures relevant to cognitive control (i.e., conscientiousness, working memory) and reactive control (i.e., neuroticism, delay of gratification) processes. In multiple regression analyses, cognitive control variables added unique variance in the prediction of both inattention and hyperactivity, but only reactive control variables added unique variance in the prediction of hyperactivity. The current findings align with past research suggesting that cognitive control processes (e.g., conscientiousness) are related to both inattention and hyperactivity/impulsivity, while reactive control processes (e.g., neuroticism) are more strongly related to hyperactivity/impulsivity in preschool children. Future longitudinal research utilizing various methods and measures is needed to understand how cognitive and reactive control processes contribute to ADHD symptom development.

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Ruiz, Gerardo, Misael Diaz, and Lakshmi N. Sridhar. "Singularities in Reactive Separation Processes." Industrial & Engineering Chemistry Research 47, no. 8 (2008): 2808–16. http://dx.doi.org/10.1021/ie0716159.

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Sproul, W. D., D. J. Christie, and D. C. Carter. "Control of reactive sputtering processes." Thin Solid Films 491, no. 1-2 (2005): 1–17. http://dx.doi.org/10.1016/j.tsf.2005.05.022.

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Ramesh, S. "Implementation of communicating reactive processes." Parallel Computing 25, no. 6 (1999): 703–27. http://dx.doi.org/10.1016/s0167-8191(99)00013-7.

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Secco, Carolinne, Maria Eduarda Kounaris Fuziki, Angelo Marcelo Tusset, and Giane Gonçalves Lenzi. "Reactive Processes for H2S Removal." Energies 16, no. 4 (2023): 1759. http://dx.doi.org/10.3390/en16041759.

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Growing demand for renewables and sustainable energy production contributes to a growing interest in producing high quality biomethane from biogas. Despite having methane (CH4) as its main component, biogas may also present other noncombustible substances in its composition, i.e., carbon dioxide (CO2), nitrogen (N2) and hydrogen sulfide (H2S). Contaminant gases, such as CO2 and H2S, are impurities known for being the main causes for the decrease of biogas calorific value and corrosion, wear of pipes, and engines, among others. Thus, it is necessary to remove these compounds from the biogas before it can be used in applications such as electricity production, thermal purposes, and replacement of conventional fossil fuels in vehicles, as well as injection into natural gas distribution networks. In this context, the present work aimed to present a systematic review of the literature using the multicriteria Methodi Ordinatio methodology and to describe processes and materials for H2S removal. The discussion indicated new materials used, as well as the advantages and disadvantages observed and the limitations in industrial implementation.

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Berry, David A., and Ka M. Ng. "Synthesis of reactive crystallization processes." AIChE Journal 43, no. 7 (1997): 1737–50. http://dx.doi.org/10.1002/aic.690430711.

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Tesis sobre el tema "Reactive processes"

Goller, Bernhard F. "Reactive nano silicon : mediated processes." Thesis, University of Bath, 2009. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.516960.

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In this thesis basic methods for the fabrication and characterisation of several nano-silicon containing systems are presented. Due to their morphology, these systems are highly reactive. Silicon wafers were used to prepare layers of porous silicon via electrochemically etching and micro– and nano– sized silicon powders were chemically etched in order to yield silicon nanoparticles. Dependent on the fabrication, particle size of the nanocrystals and porosity of the assemblies can be tailored over a wide range: mean particle sizes can be between 3 to 20 nm and porosities can be varied from 10 to 90 %. A huge surface area of up to 500m2/g which is in addition, due to the fabrication process, hydrogen terminated, entail the outstanding chemical and photo-chemical properties of nanocrystalline silicon. Both, chemical and photo-chemical properties of silicon nanocrystal structures are investigated. The emphasis lies on optical spectroscopy. The indirect band gap structure of silicon in combination with quantum confinement effects are the origin of the interesting luminescence properties of nano-silicon. The energy transfer process from photo-excited excitons confined in silicon nanocrystals to molecules present in the surrounding ambient, like oxygen or a variety of organic substances, has been studied. Measurements demonstrated that long-living excitons very efficiently transfer their energy to surrounding molecules. The low probability of creating excitons which can persist for a long time, from μs to ms, by a photon and structural properties of porous silicon, or rather its reactive surface, however, seem to be the reason for a low total quantum yield of sensitised excited singlet state oxygen.

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Bullara, Domenico. "Nonlinear reactive processes in constrained media." Doctoral thesis, Universite Libre de Bruxelles, 2015. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209073.

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In this thesis we show how reactive processes can be affected by the presence of different types of spatial constraints, so much so that their nonlinear dynamics can be qualitatively altered or that new and unexpected behaviors can be produced. To understand how this interplay can occur in general terms, we theoretically investigate four very different examples of this situation. The first system we study is a reversible trimolecular chemical reaction which is taking place in closed one-dimensional lattices. We show that the low dimensionality may or may not prevent the reaction from reaching its equilibrium state, depending on the microscopic properties of the molecular reactive mechanism. The second reactive process we consider is a network of biological interactions between pigment cells on the skin of zebrafish. We show that the combination of short-range and long-range contact-mediated feedbacks can promote a Turing instability which gives rise to stationary patterns in space with intrinsic wavelength, without the need of any kind of motion.Then we investigate the behavior of a typical chemical oscillator (the Brusselator) when it is constrained in a finite space. We show that molecular crowding can in such cases promote new nonlinear dynamical behaviors, affect the usual ones or even destroy them. Finally we look at the situation where the constraint is given by the presence of a solid porous matrix that can react with a perfect gas in an exothermic way. We show on one hand that the interplay between reaction, heat flux and mass transport can give rise to the propagation of adsorption waves, and on the other hand that the coupling between the chemical reaction and the changes in the structural properties of the matrix can produce sustained chemomechanical oscillations. These results show that spatial constraints can affect the kinetics of reactions, and are able to produce otherwise absent nonlinear dynamical behaviors. As a consequence of this, the usual understanding of the nonlinear dynamics of reactive systems can be put into question or even disproved. In order to have a better understanding of these systems we must acknowledge that mechanical and structural feedbacks can be important components of many reactive systems, and that they can be the very source of complex and fascinating phenomena. Doctorat en Sciences info:eu-repo/semantics/nonPublished

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Daniel, Guido. "Conceptual design of reactive distillation processes." Thesis, University of Manchester, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.503083.

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Integrated processes such as reactive distillation offer the potential for reduced capital and operating costs compared to conventional flowsheets. In this work new tools for the identification of the optimal reactive distillation process with the optimal degree of integration are developed. A conceptual design method based on the boundary value method is used for a set of reactive distillation processes. The combination of a reactive distillation column with a pre-reactor is a valuable alternative to standalone reactive distillation columns. This thesis presents an approach to identify promising designs for such flowsheets and the optimum distribution of the reaction extent between the pre-reactor and the reactive distillation column. The methodology uses a boundary value method for the design of the column; chemical equilibrium is assumed. The column usually consists of a reactive `core', two rectifying sections and one stripping section. This work presents an approach to identify promising designs for standalone reactive distillation columns as well as for reactor - reactive distillation column flowsheets, when reaction kinetics are available. Reaction kinetics are considered and several near-optimal flowsheet designs are generated. A new approach for the conceptual design of double-feed reactive distillation columns is presented. One of the feed streams is situated at the boundary of the reactive section and the other one can be fed into the non-reactive section of the column. Thus the column consists of an additional separating section, which offers the opportunity to add an additional function to the column. The production of methyl acetate is an example for such a column structure. The additional section in that case acts as an extractive distillation zone. Here also chemical equilibrium is assumed. The integration of further separation steps with a reactive distillation column leads to a highly integrated process: a reactive dividing wall column. Within one apparatus, more than two products can be obtained and the capital cost can be reduced drastically. Furthermore, the well-known reduction in energy demand for dividing wall columns compared to a sequence of conventional distillation columns can lead to reduced operating costs. However, the simulation, design and operation of such complex columns is complicated. A novel approach for the conceptual design of reactive dividing wall columns is presented in this work. Chemical equilibrium is assumed on every reactive stage of the column. The use of the concept of product regions and composition manifolds during all proposed design procedures leads to an increased robustness when compared to conventional approaches based on BVMs. Furthermore, the approaches can be used for n-component systems. Several column designs with different design and operating' parameters are identified for each reactive distillation process, allowing the process engineer to compare and choose from a selection of designs. These tools can assist in identifying the optimal degree of integration for reactive distillation processes ranging from reactor - reactive distillation combinations via complex double feed reactive distillation columns with additional separating sections to the most integrated reactive distillation process: the reactive dividing wall column. The new methodology offers an easy to use tool for process engineers, which assists in identifying an economical integrated reaction-distillation process and could lead to increased industrial applications of technologies coupling unit operations.

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Harkin-Jones, Eileen M. A. "Rotational moulding of reactive plastics." Thesis, Queen's University Belfast, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317442.

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Ströhlein, Guido. "Modeling of reactive- and bio-chromatographic processes /." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=16950.

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Shao, Haibing. "Modelling reactive transport processes in porous media." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-61738.

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Reactive transport modelling has wide applications in geosciences. In the ﬁeld of hydrogeology, it has been utilised to simulate the biogeochemical processes that disperse and degrade contaminants in the aquifer. For geotechnical applications, such as geological CO2 sequestration, the reaction of CO2 with the ambient saline aquifer determines the ﬁnal success of storage. In a radioactive waste repository, scientists rely on reactive transport models to predict the mobilisation of hazardous radionuclides within space and time. In this work, the multi-component mass transport code OpenGeoSys, was coupled with two geochemical solvers, the Gibbs Energy Minimization Selektor (GEM) and the Biogeochemical Reaction Network Simulator (BRNS). Both coupled codes were veriﬁed against analytical solutions and simulation results from other numerical models. Moreover, the coupling interface was developed for parallel simulation. Test runs showed that the speed-up of reaction part had a very good linearity with number of nodes in the mesh. However, for three dimensional problems with complex geochemical reactions, the model performance was dominated by solving transport equations of mobile chemical components. OpenGeoSys-BRNS was applied to a two dimensional groundwater remediation problem. Its calculated concentration proﬁles ﬁtted very well with analytical solutions and numerical results from TBC. The model revealed that natural attenuation of groundwater contaminants is mainly controlled by the mixing of carbon source and electron donor. OpenGeoSys-GEM was employed to investigate the retardation mechanism of radionuclides in the near ﬁeld of a nuclear waste repository. Radium proﬁles in an idealised bentonite column was modelled with varying clay/water ratios. When clay content is limited, Ba-Sr-Ra sulfate solid solutions have a very strong retardation eﬀect on the aqueous radium. Nevertheless, when clay mineral is abundant, cation exchange sites also attract Sr and Ba, thus dominates the transport of Ra.

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Murat, Muhamad Nazri. "Novel catalytic structures for reactive distillation processes." Thesis, University of Manchester, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.527418.

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Stein, Erik [Verfasser]. "Synthesis of Reactive Distillation Processes / Erik Stein." Aachen : Shaker, 2003. http://d-nb.info/1181602440/34.

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Biller, Nicholas Charles Trinder. "Modelling and control of reactive distillation processes." Thesis, University College London (University of London), 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.405850.

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Thomson, Douglas W. "Generation of reactive intermediates by reductive processes." Thesis, University of Strathclyde, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.424308.

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Libros sobre el tema "Reactive processes"

Norman, Gethin Josiah. Metric semantics for reactive probabilistic processes. University of Birmingham, 1997.

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National Institute of Standards and Technology (U.S.), ed. Integration strategies for the reactive scheduling. U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 1998.

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Glabbeek, Rob J. van. Reactive, generative, and stratified models of probabilistic processes. Dept. of Computer Science, Stanford University, 1994.

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Cooper, Joanne Lorna. Inelastic and reactive collision processes of the methylidyne radical. University of Manchester, 1993.

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1942-, Schulz Horst D., Teutsch Georg, and Deutsche Forschungsgemeinschaft. Schwerpunktprogramm 546 Geochemische Prozesse mit Langzeitfolgen im Anthropogen Beeinflüssten Sickerwasser und Grundwasser., eds. Geochemical processes: Conceptual models for reactive transport in soil and groundwater. Wiley-VCH, 2002.

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IAHR/AIRH, Symposium on Transport and Reactive Processes in Aquifers (1994 Zürich Switzerland). Transport and reactive processes in aquifers: Proceedings of the IAHR/AIRH Symposium on Transport and Reactive Processes in Aquifers, Zürich, Switzerland, 11-15 April 1994. Balkema, 1994.

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Almeida-Rivera, Cristhian Pau l. Designing reactive distillation processes with improved efficiency: Economy, exergy loss and responsiveness. s.n.], 2005.

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Chastaing, Delphine. Reactive and inelastic processes in the gas-phase at ultra-low temperatures. University of Birmingham, 2000.

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J, Jedlinski Zbigniew, and International Union of Pure and Applied Chemistry., eds. Electron transfer processes and reactive intermediates in modern chemistry: Held i Krakow, Poland, September 3-7, 1997. Wiley-VCH Verlag, 1998.

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Y, Limoge, and Bocquet J. L, eds. Reactive phase formation at interfaces and diffusion processes: Proceedings of the international meeting held in Aussois (France) May 21-28, 1993. Trans Tech Publications, 1994.

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Capítulos de libros sobre el tema "Reactive processes"

Träubel, Harro. "Reactive Processes." In New Materials Permeable to Water Vapor. Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-642-59978-1_10.

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Hoffmann, Ulrich, Christian Horst, and Ulrich Kunz. "Reactive Comminution." In Integrated Chemical Processes. Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527605738.ch14.

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Rieckmann, Thomas, and Susanne Völker. "Reactive Filtration." In Integrated Chemical Processes. Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527605738.ch15.

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Kenig, Eugeny Y., and Andrzej Górak. "Reactive Absorption." In Integrated Chemical Processes. Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527605738.ch9.

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Kiss, Anton Alexandru. "Reactive Separation Processes." In Process Intensification Technologies for Biodiesel Production. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-03554-3_3.

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Berg, Sören, Tomas Nyberg, and Tomas Kubart. "Modelling of Reactive Sputtering Processes." In Reactive Sputter Deposition. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-76664-3_4.

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Wibowo, Christianto, Vaibhav V. Kelkar, Ketan D. Samant, Joseph W. Schroer, and Ka M. Ng. "Development of Reactive Crystallization Processes." In Integrated Chemical Processes. Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527605738.ch11.

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Schildhauer, Tilman J., Freek Kapteijn, Achim K. Heibel, Archis A. Yawalkar, and Jacob A. Moulijn. "Reactive Stripping in Structured Catalytic Reactors: Hydrodynamics and Reaction Performance." In Integrated Chemical Processes. Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527605738.ch8.

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Shao, Haibing, Sebastian Bauer, Florian Centler, Georg Kosakowski, Shuang Jin, and Mingliang Xie. "Reactive Transport." In Thermo-Hydro-Mechanical-Chemical Processes in Porous Media. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-27177-9_15.

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Bart, Hans-Jörg. "Reactive Extraction: Principles and Apparatus Concepts." In Integrated Chemical Processes. Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527605738.ch10.

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Actas de conferencias sobre el tema "Reactive processes"

Perez, Asher, and Ranajay Ghosh. "Effect of Reactive Binders on Regolith Manufacturing Processes." In IAF Space Exploration Symposium, Held at the 75th International Astronautical Congress (IAC 2024). International Astronautical Federation (IAF), 2024. https://doi.org/10.52202/078357-0220.

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Wiss, Erik, Nesrine Jaziri, Adam Yuile, Jens Müller, and Steffen Wiese. "Experimental Study on Reactive Joining Processes on LTCC Substrates." In 2024 IEEE 10th Electronics System-Integration Technology Conference (ESTC). IEEE, 2024. http://dx.doi.org/10.1109/estc60143.2024.10712029.

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Yuile, Adam, Nesrine Jaziri, Erik Wiss, Jens Müller, and Steffen Wiese. "Simulations of Thermocouple Measurements During Reactive Bonding Processes on LTCC Substrates." In 2024 IEEE 10th Electronics System-Integration Technology Conference (ESTC). IEEE, 2024. http://dx.doi.org/10.1109/estc60143.2024.10712001.

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Gao, Qianhui, Yang He, Renyu Liu, and Qianhui Gao. "HazardClassTransformer: Transformer-Based Model for Reactive Chemical Hazard Classification in Industrial Processes." In 2024 3rd International Conference on Artificial Intelligence, Internet of Things and Cloud Computing Technology (AIoTC). IEEE, 2024. http://dx.doi.org/10.1109/aiotc63215.2024.10748315.

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Sadiek, Ibrahim, Norbert Lang, Adam J. Fleisher, and Jean-Pierre van Helden. "Precision Frequency Comb Spectroscopy of Reactive Molecular Plasmas." In CLEO: Science and Innovations. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_si.2024.sf2f.6.

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Using precision frequency comb spectroscopy, we study low-pressure molecular plasmas containing nitrogen, hydrogen, and a carbon source. We obtain precise quantum-state-resolved knowledge of plasma-generated molecules, providing insights into the non-thermal nature of plasma chemical processes.

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Huerta-Rosas, Brenda, Melanie Coronel-Mu�oz, Juan Jos� Quiroz-Ram�rez, et al. "Intensified Alternative for Sustainable Gamma-Valerolactone Production from Levulinic Acid." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.167219.

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An intensified approach to ?-valerolactone (GVL) production is achieved using a reactive distillation column. Conventional methods require multiple units, leading to high energy consumption, costs, and limited scalability. The proposed technology integrates reaction and separation into a single unit, enhancing process efficiency for biomass-derived chemicals. A multiobjective optimization framework balances economic, environmental, and operational goals, reducing total annual cost (TAC) by 43% and environmental impact (EI99) by 45% compared to conventional processes. Additionally, energy consumption drops by 63%, while GVL production increases by 25%, highlighting the potential of reactive distillation for improved efficiency and sustainability.

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King, Fraser, Miroslav Kolář, and David W. Shoesmith. "Modelling the Effects of Porous and Semi-Permeable Layers on Corrosion Processes." In CORROSION 1996. NACE International, 1996. https://doi.org/10.5006/c1996-96380.

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Abstract Porous and semi-permeable layers play a role in many corrosion processes. Porous layers may simply affect the rate of corrosion by affecting the rate of mass transport of reactants and products to and from the corroding surface. Semi-permeable layers can further affect the corrosion process by reacting with products and/or reactants. Reactions in semi-permeable layers include redox processes involving electron transfer, adsorption, ion-exchange and complexation reactions and precipitation/dissolution processes. Examples of porous and semi-permeable layers include non-reactive salt films, precipitate layers consisting of redox-active species in multiple oxidation states (e.g., Fe oxide films), clay and soil layers and biofilms. Examples of these various types of processes will be discussed and modelling techniques developed from studies for the disposal of high-level nuclear waste presented.

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Shao, Bo, Yang Li, Renpin Huang, et al. "Multioctave Power Amplifier Based on Extended Resistive-Reactive Continuous Class F Mode." In 2024 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP). IEEE, 2024. https://doi.org/10.1109/imws-amp62793.2024.10966525.

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Vel�zquez, Josu� J. Herrera, J. Rafael Alc�ntara Avila, Salvador Hern�ndez, and Juli�n Cabrera Ruiz. "Evaluation of the Controllability of Distillation with Multiple Reactive Stages." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.120398.

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Intensified schemes, such as reactive distillation, have been proposed to produce silane (SiH4). Several studies have been carried out around this intensified scheme focusing directly on its improvement in energy or economic criteria. However, these mentioned criteria do not ensure that the scheme is also optimal from the control point of view. There is a direct compromise between the economic criterion and the control criterion. Thus, the best controllable scheme is not necessarily the most economical and vice versa. Analyses have been proposed to evaluate the controllability of steady-state processes using open-loop with Singular Value Decomposition (SVD) under quantitative a criterion such as A? + ?sm with simplified first-order transfer functions. This work considers four feasible designs with multiple reactive zones and evaluates their controllability from their open-loop dynamic responses obtained from Aspen Dynamics� by calculating the condition number for different frequency ranges analyzing qualitative aspects and the A? + ?sm criterion evaluating the controllability of each scheme and the conditions of the simplification of their dynamic responses. For this, simplifications of first and second order transfer function models are compared with the models that robustly predict their behavior. The results of this study show that first order functions, despite their simplicity, can predict well the complex model of these distillation schemes. However, for low frequencies (i.e. ? < 10 rad/h) second order functions are better options because they capture the overshooting (damping) effect. The proposed methodology can be applied in global optimization with controllability as an additional criterion in the objective function.

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Tebbal, Saadedine, and Russell D. Kane. "Materials Selection in Hydrothermal Oxidation Processes." In CORROSION 1998. NACE International, 1998. https://doi.org/10.5006/c1998-98413.

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Abstract Results of a literature and an experience survey on materials selection in subcritical and supercritical water oxidation processes are presented in this paper. Some hydrothermal process environments with moderate pH levels and low levels of reactive halide ions were mild enough to allow the use of AISI 316 and similar stainless alloys. The engineering alloys most commonly utilized in hydrothermal oxidation processes were found to be alloys C-276 and 625. However, the corrosivity in some environments appeared to be beyond the limits of alloys C-276 and 625 and required materials with higher corrosion resistance. Titanium alloys such as T1-Gr2, Ti-Gr9 and Ti-Gr12 had value in terms of their corrosion resistance under some cases of highly oxidizing conditions. For severe applications, noble metals such as Pt, Pt-Ir and Pt-Rh were used as liners and overlays to minimize corrosive attack, Newer developed alloys such as alloy C-4, C-22, 59, 686 and C-2000 haven’t yet been evaluated in hydrothermal oxidation process environments. In addition to materials selection, design innovations were used to minimize conditions for corrosive attack in process equipment.

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Informes sobre el tema "Reactive processes"

Yost, F. G., E. J. O`Toole, P. A. Sackinger, and T. P. Swiler. Model determination and validation for reactive wetting processes. Office of Scientific and Technical Information (OSTI), 1998. http://dx.doi.org/10.2172/564079.

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Rutqvist, Jonny, James Davis, Liange Zheng, Victor Vilarrasa, James Houseworth, and Jens Birkholzer. Investigation of Coupled THMC Processes and Reactive Transport: FY14 Progress. Office of Scientific and Technical Information (OSTI), 2014. http://dx.doi.org/10.2172/1150010.

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Knyazev, Vadim D. Kinetics and mechanisms of elementary reactive processes in polymer pyrolysis. National Institute of Standards and Technology, 2009. http://dx.doi.org/10.6028/nist.gcr.09-923.

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Steefel, Carl, Jonny Rutqvist, Chin-Fu Tsang, et al. Reactive Transport and Coupled THM Processes in Engineering Barrier Systems (EBS). Office of Scientific and Technical Information (OSTI), 2010. http://dx.doi.org/10.2172/988174.

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Davis, J., J. Rutqvist, C. Steefel, et al. Investigation of Reactive Transport and Coupled THMC Processes in the EBS. Office of Scientific and Technical Information (OSTI), 2013. http://dx.doi.org/10.2172/1165203.

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Zavarin, M., S. K. Roberts, T. P. Rose, and D. L. Phinney. Validating Mechanistic Sorption Model Parameters and Processes for Reactive Transport in Alluvium. Office of Scientific and Technical Information (OSTI), 2002. http://dx.doi.org/10.2172/15002138.

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Meuwly, Markus. Investigations of Reactive Processes at Temperatures Relevant to the Hypersonic Flight Regime. Defense Technical Information Center, 2014. http://dx.doi.org/10.21236/ada611797.

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Maharrey, Sean P., Deneille Wiese-Smith, Aaron M. Highley, Richard Behrens, and Jeffrey J. Kay. Interactions between ingredients in IMX-101: Reactive Chemical Processes Control Insensitive Munitions Properties. Office of Scientific and Technical Information (OSTI), 2014. http://dx.doi.org/10.2172/1204108.

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Krey, Adrian, Vitus Zenz, Karolin Widera, Manuela List, Dirk Muscat, and Nicole Strübbe. Reactive extrusion of lignocellulosic biomass to produce biopolymer monomers using high-energy radiation and catalytic acids. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.ss.bbb.6.

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The increasing prevalence of bio-based and biodegradable plastics as an alternative to traditional plastics derived from crude oil is a noteworthy trend. Polybutylene succinate (PBS), a plastic produced from succinic acid, is among the promising materials for the future. However, the production of bio-based succinic acid through biotechnical processes in controlled environments presents challenges. This process leads to increased costs and is currently not economically competitive compared to crude oil-based succinic acid production. In addition to succinic acid, levulinic acid is another monomer produced in the same process. A novel approach to the digestion of biomass has been developed to address the issue of biotechnological production of bio-based platform chemicals. This innovative process employs microwave radiation, pressure, and temperature to convert wood residues into succinic acid and levulinic acid. Various catalyst concentrations and biomass ratios were tested in a batch process, with high-pressure liquid chromatography (HPLC) and liquid chromatography–mass spectrometry (LC/MS) analyses revealing the formation of succinic acid, levulinic acid, formic acid, and 2-oxoglutaric acid. The results demonstrate that microwaves combined with a metal salt catalyst can be used to produce platform chemicals from lignocellulosic biomass. To further advance the continuous production of PBS, a twin-screw extruder was modified and adapted after the successful results obtained from the batch processes. This setup enables additional experiments to evaluate the transferability of batch process results to continuous reactions, facilitating the scale-up and the economic viability of the overall PBS production process in the future.

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Lichtner, Peter C., Glenn E. Hammond, Chuan Lu, et al. PFLOTRAN User Manual: A Massively Parallel Reactive Flow and Transport Model for Describing Surface and Subsurface Processes. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1168703.

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