Cyclization of Pseudoionone Catalyzed by Sulfuric Acid in a Microreactor

Zhou, Feng; Zhang, Boyu; Yao, Chaoqun; Zhu, Kai; Yang, Mei; Chen, Guangwen

doi:10.1002/ceat.201500670

Cited by 12 publications

(6 citation statements)

References 24 publications

(29 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Liquid–liquid two‐phase process is widely encountered in a broad range of application areas, such as extraction, emulsification and reactions like nitration, acid catalyzed reaction, and so forth. In the aforementioned fields, mixing between the immiscible phases is usually the rate‐determining step due to large interfacial tension and mass‐transfer resistance at the interface .…”

Section: Introductionmentioning

confidence: 99%

Liquid–liquid two‐phase flow in ultrasonic microreactors: Cavitation, emulsification, and mass transfer enhancement

et al. 2017

Self Cite

View full text Add to dashboard Cite

The effects of ultrasound on the hydrodynamic and mass transfer behaviors of immiscible liquid–liquid two‐phase flow was investigated in a domestic ultrasonic microreactor. Under ultrasonic irradiation, cavitation bubble was generated and underwent violent oscillation. Emulsification of immiscible phases was initiated by virtue of oscillating bubbles shuttling through the water/oil interface. The pressure drop was found to decrease with increasing ultrasound power, with a maximum decrement ratio of 12% obtained at power 30 W. The mass transfer behavior was characterized by extraction of Rhodamine B from water to 1‐octanol. An enhancement factor of 1.3–2.2 on the overall mass‐transfer coefficient was achieved under sonication. The mass transfer performance was comparable to passive microreactor at similar energy dissipation rate (61–184 W/kg). The extraction equilibrium was reached under a total flow velocity 0.01 m/s and input power 20 and 30 W, exhibiting its potential use in liquid‐liquid extraction process. © 2017 American Institute of Chemical Engineers AIChE J, 64: 1412–1423, 2018

show abstract

Section: Introductionmentioning

confidence: 99%

Liquid–liquid two‐phase flow in ultrasonic microreactors: Cavitation, emulsification, and mass transfer enhancement

et al. 2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…Liquid–liquid multiphase transport in microchannels or porous media is an important topic in many areas, such as microchemical reactions, extraction, on‐chip microfluidic applications, oil recovery, and fuel cells . As interfacial forces dominate between immiscible phases at micro‐scale, it tends to minimize the total surface area to form spherical interface, which is the shape taken by an isolated droplet.…”

Section: Introductionmentioning

confidence: 99%

Formation of liquid–liquid slug flow in a microfluidic T‐junction: Effects of fluid properties and leakage flow

Yao

Liu

et al. 2017

AIChE Journal

Self Cite

View full text Add to dashboard Cite

Characteristics of liquid-liquid slug flow are investigated in a microchannel with focus on the leakage flow that bypasses droplets through channel gutters. The results show that the leakage flow rate varies in a range of 10.7-53.5% and 8.3-30.9% of the feed flow rate, during the droplet formation (i.e., at T-junction) and downstream flow (i.e., in the main channel), respectively, which highly depends on Ca number and wetting condition. Empirical correlations are proposed to predict them for perfectly and partially wetting conditions. Leakage flow contribution is further used to improve the Garstecki model for size scaling in order to extend its suitability for both squeezing and shearing regimes. The instantaneous flow rates of the immiscible phases are found to fluctuate periodically with the formation cycles, but in opposite behavior. The effect of the presence of leakage flow on such fluctuation are investigated and compared with gas-liquid systems.

show abstract

“…1). This system is a polymeric nanoparticle system and as such behaves differently as compared to that of the metallic nanoparticle formation in a microreactor or a catalytic reaction system, wherein, with the increase in precursor concentration, the nucleation rate increases [36,37]. The lowest particle size obtained was about 55 ± 18 nm for the 0.05 % w/v concentration of CS.…”

Section: Effect Of Residence Time On Particle Sizementioning

confidence: 99%

Optimization of Continuous Synthesis of Cross‐Linked Chitosan Nanoparticles Using Microreactors

Rathi

Gaikar

2017

Chem Eng & Technol

View full text Add to dashboard Cite

A process for continuous synthesis of cross‐linked chitosan‐sodium tripolyphosphate (CS‐TPP) nanoparticles is optimized using microreactors for its comparison with a batch stirred reactor. The effect of various parameters including residence time, concentration of CS, pH of the CS solutions, and stabilizing surfactant concentration was modeled by population balance equations (PBEs) to determine size, growth, and nucleation rates of the CS‐TPP nanoparticles. The smallest particle size was obtained at lower residence time, lower concentration of CS, pH 5, and using a surfactant concentration above its critical micellar concentration. The particles obtained from the microreactors are agglomerated but are smaller in size as compared to those obtained from the batch reactor. The system was also optimized for the minimum particle size applying the estimated growth rate and the PBEs.

show abstract

Cyclization of Pseudoionone Catalyzed by Sulfuric Acid in a Microreactor

Cited by 12 publications

References 24 publications

Liquid–liquid two‐phase flow in ultrasonic microreactors: Cavitation, emulsification, and mass transfer enhancement

Liquid–liquid two‐phase flow in ultrasonic microreactors: Cavitation, emulsification, and mass transfer enhancement

Formation of liquid–liquid slug flow in a microfluidic T‐junction: Effects of fluid properties and leakage flow

Optimization of Continuous Synthesis of Cross‐Linked Chitosan Nanoparticles Using Microreactors

Contact Info

Product

Resources

About