— In view of the lower boiling point of acetone and no acetone/water azeotrope, it is a significant work to study the liquid-liquid phase equilibria for acetone + water + high-solubility inorganic electrolyte system.K 4 P 2 O 7 was superior to K 2 CO 3, K 2 HPO 4, and K 3 PO 4 in the separation of acetone from the aqueous solution. Both 600 g/kg of K …
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— Acetone is produced via several alternative processes, one of which is the dehydrogenation of 2-propanol (IPA). The endothermic gas-phase reaction converts IPA to acetone and hydrogen.
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View acetone-d.doc from CHE MISC at Autonomous University of Nuevo León. Separations and Reaction Engineering Spring 2000 Design Project Production of Acetone Process Objective Function We would
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In separate labeled containers obtain 15 mL hexane, 15 mL of 70 % hexane-30 % acetone solution, 15 mL acetone and 15 mL of 80 % acetone-20 % methanol solution. Also, label six test tubes 1 through 6 and a beaker as "waste solvent." First, transfer about 0.5 mL of your spinach extract (from test tube, E) to a small vial for use later
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— K for acetone in an air/water system is 2.0. We intend to absorb 90% of the acetone entering in the gaseous phase into the liquid phase. ... solute-free carrier gas at which an infinite number of equilibrium stages is required in order to achieve the desired separation (x) = mole fraction of solute in liquid phase (mol solute/mol total liquid ...
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— Acetone and n-heptane are common solvents in the pharmaceutical industry and they have been found in wastewater. Under atmospheric conditions, the mixture of these compounds creates a minimum-boiling azeotrope. The extractive distillation process with a high boiling solvent is commonly utilized to separate the azeotropes in the …
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compounds acetone is obtained by isopropyl alcohol (IPA) dehydrogenation. The feedstock is azeotropic mixture IPA-water (Luyben, 2011). This contribution aims to evaluate …
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— This paper compares the steady-state design and the dynamic control of these two methods when applied to the acetone-methanol binary system. The minimum …
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— Based on the analysis of a phenol and acetone recovery flowsheet and phase equilibria of reactionmixture components, isopropylbenzene has been proposed …
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— The type of reaction between acetone and iodine is called the haloform reaction, which is a reaction that involves acetone and a base and a halogen, which is iodine in this case. A halogen is an ...
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A mixture containing 50.0 wt% acetone and 50.0 wt% water is to be separated into two streams – one enriched in acetone and the other in water. The separation process consists of extraction of the acetone from the water into methyl isobutyl ketone (MIBK), which dissolves acetone but is nearly immiscible with water.
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Request PDF | On Sep 1, 2014, Gongping Liu and others published PDMS/ceramic composite membrane for pervaporation separation of acetone–butanol–ethanol (ABE) aqueous solutions and its ...
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— The paper presents the results of the study of phase equilibrium in the system containing acetone, isopropanol, water, methyl isobutyl ketone, methyl isobutyl carbinol, and diisobutyl ketone. Mathematical modeling in AspenPlus V.10.0 was chosen as a method of studying. Thermodymanic-topological analysis was used to analyze the …
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— 3. Selection of Appropriate Extraction Solvent(s) Extraction of lipids from cells and tissues is primarily a mass transfer operation, either by the direct release of lipids in bulk with disruption of the cells or diffusion of lipids across the cell wall [].The polarity of solvent substantially influences the diffusion of lipids across the cell wall, thus …
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— n-Butanol is an advanced next-generation drop-in biofuel, which can be produced by anaerobic acetone-butanol-ethanol (ABE) fermentation using biomass derived carbohydrates as substate by Clostridia sp. Nevertheless, even though there are plenty of breakthroughs for continuous improving the competitiveness of biological n-butanol …
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— Macromolecular Reaction Engineering, a Wiley polymers journal, publishes research in the field of polymer reaction engineering & polymerization reactors. ... selectivity is typically based on a "one-analyte-at-a-time" investigation. However, comparison of acetone sorption (in one experimental test) and interferent sorption (in a ...
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— The reaction is severely equilibrium-limited and high conversions of acetone are only possible if the unconverted acetone is separated and recycled. The reaction, separation and recycle can either be done separately in a reactor-distillation column-recycle process (RDR) or simultaneously in a catalytic distillation (CD) column.
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— As the first separation section after the reaction, all the raw-after-reaction mixture needs to be treated in the acetone refining section, and multiple components with a wide-boiling-point range require separation. To separate acetone from heavy components, nearly half of feed in acetone refining section will be vaporized.
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— After reaction, the separation of produced 5-HMF and reusability of biphasic system were tested. Moreover, the reaction pathway of cellulose conversion in this reaction system was studied by density functional theory (DFT) calculations to identify the rate-determining step in this complex conversion process.
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— diffusivity with acetone at 25°C = 2.90×10-9 m 2 s-1; Water density = 1000 kg m-3 ; viscosity = 0.895 cP; diffusivity with acetone at 25°C = 1.16×10-9 m 2 s-1; The interfacial tension of water and MIBK at 25°C = 0.0157 kg s-2. Use the ternary phase diagram to find (m).
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— The history of designing and the evolution of the process for the joint production of phenol and acetone, which is now the basic industrial method for the manufacture of these products, the state of the art and parameters of its key steps in industrial facilities among world manufacturers of phenol are presented. Special …
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Pd Metal Catalysts for Cross-Couplings and Related Reactions in the 21st Century: A Critical Review. Chemical Reviews 2018, ... Modeling and Optimization Study of Pressure-Swing Distillation for the Separation Process of Acetone–Methanol Mixture with Vapor–Liquid Equilibrium Analysis. Journal of Chemical Engineering of Japan 2016, 49 …
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— Various factors affecting the reaction, such as solvent to algae ratio, water content, catalyst addition, reaction temperature, and time, were investigated. ... is an attractive method for in situ acetone-butanol-ethanol (ABE) separation from fermentation broth to obtain renewable biological n-butanol. However, the downstream distillation ...
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— A series of two-step reactions and several special experiments were designed and carried out to discover the reaction pathway of acetone ammoximation to acetone oxime over titanium silicalites-1 (TS-1) employing 25 wt% ammonia and 30 wt% hydrogen peroxide as the ammoximation agents. The experimental results show that the …
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— Acetone and n-heptane are common solvents in the pharmaceutical industry and they have been found in wastewater. Under atmospheric conditions, the mixture of these compounds creates a …
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compounds acetone is obtained by isopropyl alcohol (IPA) dehydrogenation. The feedstock is azeotropic mixture IPA-water (Luyben, 2011). This contribution aims to evaluate process feasibility both in terms of reaction engineering and separation by distillation. Rational use of energy is based on process integration
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— Butanol is not only an important heavy industrial chemical but also an advanced biofuel. Butanol, acetone, and ethanol produced via acetone–butanol–ethanol (ABE) fermentation is a potential way. However, up to now, because of the severe product inhibition, the ABE fermentation process is still not economically competitive.
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— 1. Looking Back: The Beginning of Perfume Engineering at LSRE. What Do We Smell? In the late 1990s, research on perfume engineering at the Laboratory of Separation and Reaction Engineering (LSRE) started with one of our members (AER) and a posdoc student, Vera Mata. She was had PhD in porous media and wanted to be an …
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— The reduction reaction could approach equilibrium within 60 min in 0.27 M acetone, with a separation ratio of 94.3%. When acetone concentration reached 0.81 M, the reduction rate of Re(VII) only increased a little, with almost the same equilibrium separation ratio (94.6%). And higher acetone concentration did not improve the reduction rate and ...
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Download Citation | On Apr 1, 2023, Shuo Ai and others published Reaction-assisted separation of acetone from the azeotrope of methanol and acetone | Find, read and cite all the research you need ...
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