Related Experiment Video
Updated: Dec 12, 2025
13:09
Utilization of Stop-flow Micro-tubing Reactors for the Development of Organic Transformations
Published on: January 4, 2018
39.5K
Accelerating gas-liquid chemical reactions in flow
Suyong Han1, Marjan Alsadat Kashfipour, Mahdi Ramezani
1Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way, Raleigh, NC 27695, USA. abolhasani@ncsu.edu.
Chemical Communications (Cambridge, England)
|August 14, 2020
Summary
Continuous flow reactors with gas-permeable membranes accelerate gas-liquid reaction studies. These tube-in-tube systems offer efficient gas delivery and analysis for diverse chemical processes.
Area of Science:
- Chemical Engineering
- Process Chemistry
- Materials Science
Background:
- Continuous flow reactors offer process intensification for gas-liquid reactions.
- Tubular membrane technology in flow reactors enables efficient gas delivery and analysis.
- These systems are adaptable for various gas-liquid processes, including those involving hazardous gases.
Purpose of the Study:
- To provide an overview of recent advancements in tubular membrane-based flow reactors for gas-liquid processes.
- To highlight the application of these reactors in modular flow chemistry platforms.
- To offer guidelines for assembly and operation, and discuss future directions.
Main Methods:
- Utilizing highly gas-permeable tubular membranes in a tube-in-tube flow reactor configuration.
- Employing these reactors for gas-liquid solubility and diffusivity measurements.
- Applying the reactors for a wide range of gas-liquid reactions like amination, carboxylation, and hydrogenation.
Main Results:
- Demonstrated efficient gas delivery and process intensification for various gas-liquid reactions.
- Successfully utilized for both analytical measurements and synthetic applications.
- Enabled safe handling of toxic, flammable gases, and unstable intermediates.
Conclusions:
- Tubular membrane-based flow reactors are versatile tools for intensified gas-liquid processes.
- Recent developments show significant potential for modular flow chemistry.
- Further research can enhance their utility and expand their applications in chemical synthesis and analysis.
Related Concept Videos
01:09Turbulent Flow: Problem Solving
315
Carbonation is a process used to dissolve carbon dioxide gas in a liquid, commonly used in the production of carbonated beverages. Achieving efficient carbonation requires careful control of temperature, pressure, and flow conditions. By adjusting these parameters, carbonation efficiency can be maximized, producing a higher concentration of CO2 in the liquid.
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures enhance...
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures enhance...
315
01:17Accelerating Fluids
2.0K
When a fluid is in constant acceleration, the pressure and buoyant force equations are modified. Suppose a beaker is placed in an elevator accelerating upward with a constant acceleration, a. In the beaker, assume there is a thin cylinder of height h with an infinitesimal cross-sectional area, ΔS.
The motion of the liquid within this infinitesimal cylinder is considered to obtain the pressure difference. Three vertical forces act on this liquid:
The motion of the liquid within this infinitesimal cylinder is considered to obtain the pressure difference. Three vertical forces act on this liquid:
2.0K
03:48Behavior of Gas Molecules: Molecular Diffusion, Mean Free Path, and Effusion
30.8K
Although gaseous molecules travel at tremendous speeds (hundreds of meters per second), they collide with other gaseous molecules and travel in many different directions before reaching the desired target. At room temperature, a gaseous molecule will experience billions of collisions per second. The mean free path is the average distance a molecule travels between collisions. The mean free path increases with decreasing pressure; in general, the mean free path for a gaseous molecule will be...
30.8K
01:10Poiseuille's Law and Reynolds Number
8.7K
Any fluid in a horizontal tube can flow due to pressure differences—fluid flows from high to low pressure. The flow rate (Q) is the ratio of pressure difference and resistance through a horizontal tube. The greater the pressure difference, the higher the flow rate. The flow resistance is expressed as:
8.7K
02:50Catalysis
29.8K
The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
29.8K
01:22Factors Influencing the Rate of Chemical Reactions
7.6K
A variety of factors influence the rate of chemical reactions. For a chemical reaction to happen, atoms must collide with enough energy to overcome the repulsion between their electrons. This energy is called activation energy. Factors influencing the rate of reaction either lower the activation energy or increase the likelihood of a successful collision.
Concentration and Pressure:
The more particles present within a given space, the more likely those particles are to bump into one another....
Concentration and Pressure:
The more particles present within a given space, the more likely those particles are to bump into one another....
7.6K