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ChemBET Pulsar TPR/TPD

Affordable automated Chemisorption

Product Category: Chemisorption

Industry: Mining and materials, Particle and surface science

Supplier: Quantachrome



The PULSAR combines affordability and automation and offers compact, bench-top catalyst characterization using automated flow methods of analysis.

The PULSAR builds on the reputation of the existing Quantachrome ChemBET - combining its affordability with the automation of the Autosorb-1C/TCD analyzer, and represents the very best value in catalyst characterization using automated flow methods of analysis, including pulse titration.

Fully automated analysis sequences are programmed using the new TPRWin PC software. Titrations for metal area and dispersion determination use a new automatic loop injector and automatic gas switching. Furnace temperature ramping provides for temperature programmed methods (TPR, TPD, TPO, TPSR-known collectively as TPX) and sample preparation, both including rapid furnace cooling using forced air for higher throughput.

New multiple TPX measurements can be automated into a single squences. The PULSAR retains the ChemBET's proven TCD detector - both oxidation AND ammonia resistant, with stable current control for baseline stability and reproducible signals. Plumbed in stainless-steel for maximum chemical compatibility, the PULSAR is ideal for use with a wide-range of gases. High-temperature quartz sample cells are standard, as is the in-cell thermocouple providing accurate sample temperature measurements.

Options include a Quadrupole Mass Spectrometer, and an external digital gas blender/mass flow controller, and a subambient TPX option.

The resulting data are used to:

  • Confirm or predict catalyst activity
  • Determine optimal catalyst preparation conditions for industrial use
  • Measure efficiency of regeneration of
    used catalysts
  • Quickly screen experimental catalysts
  • Calculate activation energies for a given reaction
  • Determine relative acid strengths


ChemBET PULSAR TPR/TPD Specifications

Sample stations:
TWO (one analysis + one preparation)
Gas titration loop:
Automatic; Interchangeable loop volumes: 50, 100 and 200µL
Gas inputs:
FIVE automatic manifold (4-way automatic switching valves plus calibration / titration gas)
Sample cells:
Quartz U-tube for high temperature chemisorption.
Quartz or borosilicate conventional cell for physisorption (B.E.T. surface area)
Cell-bypass valve:
YES (Between cell and detector - to remove unwanted gases / vapors)
Connections for mass spectrometer:
YES (After sample at cell. After trap - before detector. After detector.)
Automatic operation :
Pulse titration, TPR,TPO,TPD and TPSR (known collectively as TPX) as separate analyses or combined into a single sequence.
Features | Performance | Gases | Temperature Control | Physical | Electrical | Accessories
Temperature Control
Preparation Temperature:
Up to 450°C using quartz heating mantle
Up to 1100°C using high-temperature furnace
TPR/TPD heating rates:
1-100 degree/min. (up to 500°C)
1-50 degree/min. (up to 750°C)
1-30 degree/min. (up to 1000°C)
1-20 degree/min. (up to 1100°C)
Furnace Control:
via PC software (as part of automatic analysis sequence)
Furnace Cooling:
Forced air using built in fan (software controlled as part of automatic analysis sequence)
Optional accessory available; includes special jacketed cell, gas heat exchanger and dual thermocouple.
Features | Performance | Gases | Temperature Control | Physical | Electrical | Accessories
Volume adsorbed:
0.001 to >100 cm3
Specific volume:
0.0001 cm3/g
Total surface area:
0.1 to 280 m2
Specific surface area:
0.01 m2/g to upper limit set only by weighing accuracy of smallest sample
Pore volume:
0.0001 to 0.15 cm3
Accuracy, volume:
± 1%
10 position (dynamic range: 512) plus user selectable detector current
Features | Performance | Gases | Temperature Control | Physical | Electrical | Accessories
Cabinet size:
45.2W x 62.5 H x 41.4D cm
Cabinet weight:
24 kg
Operating temperature:
15 - 35°C
Storage temperature:
0 - 50°C
20 - 90% (non-condensing)
Wetted Materials:
316 Stainless Steel, PTFE, Viton, tungsten / rhenium, gold
Features | Performance | Gases | Temperature Control | Physical | Electrical | Accessories
Gases (not supplied)
Chemisorption gases:
typically H2, O2, CO, N2O, SO2, NH3
Physisorption gases:
typically N2, Ar, Kr, CO2 in helium
Physisorption cryogen:
liquid nitrogen typical
Cold trap cryogen:
liquid nitrogen/alcohol slush, dry-ice / acetone, liquid nitrogen, etc.
Features | Performance | Gases | Temperature Control | Physical | Electrical | Accessories
100 - 240 VAC
50/60 Hz
Features | Performance | Gases | Temperature Control | Physical | Electrical | Accessories
Dewars, heating mantle, high temperature furnace, furnace controller and cables, sample cells and precision syringes.

TPRWin: Windows® compatible instrument control, data acquisition and reduction software.

Not Included:
Gas regulatorsPC with Windows, 2000 or XP or VISTA
Optional Items:
Quadrupole Mass Spectrometer, Digital gas blender/mass flow controller, Sub-ambient TPX option.
Features | Performance | Gases | Temperature Control | Physical | Electrical | Accessories


Scientific Solutions

Scientific Solutions have been providing carefully selected laboratory and analytical equipment to Australian Industries such as Environmental, Pharmaceutical, Food and Beverage and Research markets of the Science Industry for over a decade.

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