Generally, photocatalytic CO₂ reduction reactions are conducted under standard temperature and pressure conditions[1, 2]. However, due to the low solubility of CO₂ in water and the difficulty of interaction between gaseous CO₂ and solid photocatalysts, the conversion efficiency of CO₂ remains low.
Based on the concept of "multi-field collaborative catalysis," raising the reaction temperature and pressure offers a novel approach to enhance CO₂ conversion.
Increasing the temperature of the photocatalytic CO₂ reduction reaction system can boost the diffusion rate of CO₂ molecules and their collision probability, thus accelerating the reaction rate;
Raising the pressure of the photocatalytic CO₂ reduction reaction system can enhance the solubility of CO₂ in the aqueous solution and the adsorption on the photocatalyst's surface, promoting the generation of liquid products.
1. Multi-Field Collaborative Catalysis: The temperature of the photocatalytic CO₂ reduction reaction system can reach up to 180°C, and the maximum pressure is 0.9 MPa, allowing for a wide range of temperature and pressure adjustments to achieve multi-field collaborative catalysis involving light, heat, and pressure;
2. Fully Automatic Online Sampling: It includes built-in sampling valves that enable fully automatic online sampling under high temperatures of 180°C and different pressure conditions ranging from 50 kPa to 0.9 MPa, improving experimental efficiency and reducing human errors;
3. Strong Compatibility: The versatile kettle lid design allows for various illumination modes, including top illumination and side illumination, making it compatible with photocatalysis, photoelectrocatalysis, and photothermal catalysis for CO₂ reduction;
4. High Integration: The reaction system integrates heating, stirring, and automatic sampling modules, saving space with compact dimensions.
The PLR MFPR-I multi-functional photochemical reactor uses a kettle-style reactor with an effective volume of 100 mL, satisfying the requirements for gas-liquid-solid photocatalytic CO₂ reduction. The inner wall is constructed from pressure-resistant glass with high chemical inertness, while the outer wall is made of stainless steel, capable of withstanding pressures up to 0.9 MPa. The reactor lid is made of sapphire glass, allowing effective transmission in the wavelength range of 0.19 to 5 μm with over 97% transmittance and a light aperture of 27.5 mm, ensuring the photocatalytic CO₂ reduction reaction proceeds under ample incident light exposure.
The PLR MFPR-I multi-functional photochemical reactor features a dual-temperature probe feedback control mode, allowing control of the temperature within the reactor and the heating module. It can reach a maximum temperature of 180°C with a temperature control precision of ±0.5°C. Additionally, it can maintain separate temperature control for the reaction vessel, tubing, and sampling valve to prevent condensation of low-boiling-point components during the CO₂ photocatalytic reduction process.
The reactor integrates a magnetic stirrer with a maximum speed of 1500 rpm and a stirring precision of ±1 rpm. This ensures thorough stirring of the solution, promoting the diffusion of gaseous CO₂ within the solution, thus facilitating catalytic conversion.
The PLR MFPR-I multi-functional photochemical reactor integrates heating, stirring, and automatic sampling modules, saving space with compact dimensions. The overall dimensions of the system are 220 mm (L) × 240 mm (W) × 270 mm (H). It is equipped with a color LCD screen for easy operation during experiments.
The PLR MFPR-I multi-functional photochemical reactor includes an integrated sampling valve group, eliminating the need for additional sampling valves for the gas chromatograph. It can automatically transfer the products generated in the photocatalytic CO₂ reduction process to the gas chromatograph for detection, effectively improving experimental efficiency and reducing errors associated with manual injection. The sampling valve group on the PLR MFPR-I allows for a 0.1 mL single sampling, offering high sensitivity suitable for various yields in photocatalytic CO₂ reduction systems. The PLR MFPR-I multi-functional photochemical reactor also features a pre-reaction processing module, which enables gas operations such as pressurization and vacuum for photocatalytic CO₂ reduction experiments.
|Room temperature ~ 180°C; Temperature Control Precision: ± 0.5°C
|-50 kPa ~ 0.9 MPa (Gauge Pressure, Absolute Pressure: 50 kPa ~ 1.0 MPa)
|Stainless Steel + Pressure-Resistant Glass Lining
|100 mL (Vessel Volume: 120 mL)
|Sampling Pressure Range
|80 kPa ~ 0.9 MPa (Absolute Pressure)
|Minimum Sampling Cycle
|Gas Sampling Volume
|100 μL; Sampling Gas Consumption: Approximately 0.5 mL
|Magnetic Stirring Speed
|200 ~ 1500 rpm, Stirring Precision: ±1 rpm
|Beijing University of Technology
|Applied Catalysis B: Environmental
|Energy & Environmental Science