Basic and Advanced Catalysts Characterization for Catalytic Surface Activity

The Autochem II Series has been developed after years of know-how by Micromeritics in the domain of basic and advanced catalyst characterization for catalytic surface activity.

  • The Autochem II has a compact size and is efficient for bench spaces, and hence, it can be easily placed inside the regular fume hoods to enable hazardous sample analysis.
  • Allows rapid analytical setup and fast analysis time with dynamic chemisorption capabilities; infinite analytical sequences are made easy by designing new sequences or using integrated procedures.
  • Reproducible and accurate results in sophisticated catalyst characterization.

Micromeritics is known for integrating applied scientific innovation to suit the analytical requirements of many customers, and addresses even the most challenging conditions.

Micromeritics’ Autochem II offers fast and precise results by using chemisorption methods in isothermal conditions on metal dispersion, exposed metal-surface area and aggregate size, and also enables surface acid/basic sites quantification.

When using temperature-programmed methods, such as TPD, TPR, TPSR and TPO, users can carry out in-depth analysis on oxidation/reduction properties, measure the number and species of surface-active sites, or find out the probe gas-solid activation energy.

AutoChem II - Training Series

Video Credit: Micromeritics Instrument Corporation

Intricate characterizations are now made easy by the Autochem II HP, which was specifically developed to run experiments, beginning from atmospheric pressure of up to 1000 psia (6.9 MPa), and helps analyze the behavior of catalysts in conditions analogous to real plants.

The standard detector is a high precision-sensitivity, corrosion-resistant, high linearity TCD that can be incorporated and combined with an external detector, such as a mass spectrometer, for selective gas monitoring.

The MicroActive control software allows easy synchronization of signals. The Autochem II series can also be fitted with several options to extend the analytical capabilities. Cooling options comprise the Kwikcoolor, a Kwikcool Vortex device, as well as a CryoCooler II cryogenic option that extends the temperature range between –100°C and 1100°C.

Additional options are also available to include one of the most accurate, commercially available vapor generators.

Features and Benefits

  • Prevents the risk of detector and tubing contamination in case corrosive gases are released during high-temperature treatments
  • Individual circuits are available for preparation and analysis of samples
  • Separate mass flow controllers are available for reference and analysis channels of TCD in the Autochem II 2920
  • Selectable temperatures of filaments and TCD
  • This unique method enables a precise and fully automatic quantitative calibration of the TCD signal for TPD, TPO and TPR experiments, covering the complete range of reactive gas percentage in the inert carrier in just a single run; this makes the process fast, accurate, quick and simple
  • Filaments can last for a long time and this is because the TCD operates at selectable and constant temperature, and thus prevents the risk of burning. When testing low-metal percentages catalysts, the sensitivity of the TCD can also be enhanced by boosting the temperature variation between the monolithic block and the filament.
  • Excellent safety and versatility prevent potential spot condensation in the analytical circuit that may impact the precision of results
  • Includes up to nine temperature signals monitoring
  • Includes up to four temperature-controlled zones for the manifold and valves up to 150°C
  • High-precision vapor generator
  • The device can be optimally controlled while monitoring the temperatures during operations
  • Low internal plumbing volume
  • Liquids can be maintained at selectable temperatures between 150°C and room temperatures. The resultant vapor partial pressure in the carrier is highly constant because of the accurate temperature control of the proprietary designed reflux condenser
  • Ensures fast detector response and high resolution, and decreases errors when estimating the gas volumes

Other Equipment by this Supplier