Autochem II 2920

A catalyst characterization laboratory enclosed in one cabinet.

Descripción del Producto

The AutoChem II 2920 is a fully automated chemisorption analyzer that can provide your laboratory with the ability to conduct a comprehensive array of highly precise studies of chemical adsorption and temperature-programmed reactions.

With this single instrument, you can acquire valuable information about the physical properties of your catalyst, catalyst support, or other materials. It can determine catalytic properties such as percent of metal dispersion, active metal surface area, acid strength, surface acidity, distribution of strength of active sites, BET surface area, and more.

The AutoChem II 2920 performs pulse chemisorption, temperature-programmed reduction (TPR), desorption (TPD), oxidation (TPO), and reaction analyses and does it automatically.

Technical Specifications

  • Four internal temperature-controlled zones can be heated independently up to 150 °C. This prevents condensation in the flow path and allows studies to be performed with vapors
  • Low internal plumbing volume assures high resolution, fast detector response, and reduces error when calculating gas volumes.
  • Highly sensitive linear thermal conductivity detector (TCD) assures the calibration volume remains constant over the full range of peak amplitudes so the area under the peak is directly proportional to the volume of gas reacted.
  • Four high-precision mass flow controllers provide extremely accurate, programmable gas control. This assures a stable baseline and accurate determination of gas volumes.
  • Corrosion-resistant detector filaments are compatible with most destructive gases and reduce the likelihood of filament oxidation.
  • EClamshell furnace can heat the quartz sample reactor to 1100 °C. Any number of ramp rates and sequences facilitate customized experiments. The KwikCool feature cools the furnace temperature rapidly down to near ambient, reducing analysis time and increasing throughput.
  • Four gas inlets each for the preparation, carrier, and loop gases permit four-gas sequential experiments, such as TPR/TPO cycles.
  • Mass spectrometer port and software integration allows virtually simultaneous detection on both the thermal conductivity detector and mass spectrometer.

Aplications

  • Catalysts – The active surface area and porous structure of catalysts have a great influence on production rates. Limiting the pore size allows only molecules of desired sizes to enter and leave; creating a selective catalyst that will produce primarily the desired product. Chemisorption experiments are valuable for the selection of catalysts for a particular purpose, qualification of catalyst vendors, and the testing of catalyst performance over time to establish when the catalyst should be reactivated or replaced.
  • Fuel Cells – Platinum-based catalysts including Pt/C, PtRu/C, and PtRuIr/C are often characterized by temperatureprogrammed reduction to determine the number of oxide phases and pulse chemisorption to calculate:
    • Metal surface area
    • Metal dispersion
    • Average crystallite size

Other applications

  • Partial Oxidation
  • Catalytic Reforming
  • Hydrocracking, Hydrodesulphurization, and Hydrodenitrogenation
  • Catalytic Cracking
  • Isomerization

Accesories

  • Vapor Generator: permits analysis using vaporized liquids in an inert carrier stream.
  • Sub-Ambient Temperature Control Devices: CryoCooler enables the start of an analysis at sub-ambient temperature.The precise control offered by the range of Micromeritics sub-ambient temperature control devices allows users to decide which tool will best provide the desired accuracy and performance in the scientific environment.
    • CryoCooler II
  • OmnistarHigh Resolutionn Mass Spectrometer for cuantitative and cualitative residual gas analysis, and connecting port for gas input system calibration
      • Excellent detection limit (< 1 ppm), even for condensed gases.
      • Compact design andeasy to use.
      • Wide detection range: 100% – 1 ppb.
      • Mass Range: 1-100 uma; 1-200 uma; 1-300 uma.

     

Technical Resources

Brochure

Chemisorption

Information Request

Nombre (requerido)

Correo electrónico (requerido)

Asunto

Mensaje

Acepto la Política de privacidad