ICCS catalyst in-situ characterization system

In situ characterization system for ICCS catalystIt is a new generation of in-situ characterization system for catalysts launched by Micromeritics in the United States, along with other dynamic laboratory reactor systems such as Micromeritics' microreactorsUnlike Solo, Micro Activity Effi adds two key characterization techniques - temperature programmed analysis (TPx) and pulse chemical adsorption - to the existing reaction system. In addition, physical adsorption can be performed by selecting corresponding configurations. Users can use ICCS to perform these important characterization techniques on fresh catalysts without the need to remove the catalyst from the reactor for repeated testing. By conducting reaction studies on the same sample and simultaneously obtaining data on TPx and pulse chemical adsorption, in-situ characterization of the catalyst has been achieved, providing a new characterization tool for catalytic research. Conducting this in-situ analysis can eliminate the possibility of gas or moisture contamination of the catalyst in the environment, avoid damaging the active catalyst and disrupting the correlation of characterization data after the reaction.

In situ characterization system technology for ICCS catalyst

The routine testing process of ICCS includes: loading the catalyst into the reactor system of ICCS, and then selecting the TPx method to characterize the catalyst. In TPx analysis, temperature programmed reduction (TPR) is commonly used for supported metal catalysts, while temperature programmed desorption (TPD) is commonly used for acid-base catalysts. Pulse chemical adsorption is usually performed after TPx to determine the number of active sites on the catalyst. Information on fresh catalysts under typical reaction conditions, especially under high pressure, can be obtained through TPx and pulse titration.

After the above characterization, users do not need to add or transfer catalysts, and can continue to study the reaction of the same catalyst sample directly.

After long-term use, the catalyst can be subjected to the same TPx and pulse chemical adsorption analysis under the same conditions as fresh catalyst. Without the need to remove the catalyst from the reactor, the key characteristics of the catalyst, such as the number of active sites, can be compared before and after the reaction.

Main characteristics and advantages of ICCS catalyst in-situ characterization system

• ICCSIn situ characterization system for catalystsIn situ characterization of catalysts, catalyst supports, and other materials can be carried out under high temperature and high pressure reaction conditions, effectively eliminating environmental interference.

• Two high-precision mass flow meters can accurately and fully automatically control gas flow, ensuring precise analysis of TPx and pulse chemical adsorption.

• In situ testing can perform multiple characterizations on the same catalyst sample.

• High precision thermal conductivity detector (TCD) can detect subtle concentration changes of gas before and after flowing through the sample tube in real time.

• With intuitive software and graphical interface, a series of operations such as security alerts, commands, control parameters, etc. can be performed through the touch screen.

• The stainless steel pipeline in the temperature control zone provides an inert and stable operating environment, avoiding condensation in the pipeline. Two internal temperature control zones can operate independently.

• Built in temperature controlled cold trap for removing condensate (such as water generated during oxide reduction process).

• ultra-smallThe internal pipeline volume can greatly reduce peak broadening and significantly improve peak resolution.

• Corrosion resistant detector filament, compatible with TPx and commonly used gases in pulse chemical adsorption.

• Interactive peak editing software enables users to quickly and conveniently evaluate results, edit peaks, and obtain reports. Simply point and click to adjust the peak boundary.

Analytical capability of catalyst in-situ characterization system

The ICCS catalyst in-situ characterization system can perform a series of in-situ characterizations of chemical adsorption and programmed temperature reactions, quantifying the key properties of catalysts and supports, facilitating the study of catalyst activity, selectivity, deactivation, poisoning, and regeneration processes.

Pulse chemical adsorption can obtain the following information:

Metal surface area

Metal dispersion

Average metal particle size

Number of active sites

Examples of TPx technology applications:

Research on catalyst regeneration (temperature programmed oxidation, TPO)

Study adsorption strength (TPD)

evaluateAdditives in metal catalysts affect the interaction between metals andcarrierThe Influence of Interplay Interaction (TPR)

Characterize the surface area of the material that can be obtained through physical adsorption (option).