Chemical and Physical Adsorption Tests with the ChemiSorb 2720 and 2750

Micromeritics’ ChemiSorb 2720 and 2750 basic dynamic chemisorption analyzers can be equipped to perform physical and chemical adsorption tests that are crucial for developing, testing and producing catalysts.

Both the ChemiSorb 2720 and 2750 models use the dynamic chemisorption technique and employ high sensitivity Thermal Conductivity Detector (TCD) for the precise quantification of the gas chemisorbed by the catalyst.

Chemisorption data is consistently converted to catalysts’ key parameters, such as active surface area, surface basicity or acidity, metal dispersion, activation energy and average crystallite size. In-situ catalysts tests can also be performed by a rapid BET total surface area measure, tracking potential changes in the microstructure of the sample.

  • Entry-level pulse chemisorption and analysis of TPR, TPO and TPD
  • Improved for research, development and quality control applications
  • Rapid BET and metal surface area, crystallite size measurement of catalysts and metal dispersion

Being an entry-level chemisorption and physisorption analyzer, the ChemiSorb 2720 is suitable for single-point BET surface area, pulse chemisorption and total pore volume measurements. The ChemiSorb 2720 is equipped with two ports—one is dedicated to sorption analysis and the second is an independent port developed for sample preparation.

The ChemiSorb 2720 also includes an integrated cooling fan to quickly reduce the temperature of a sample after a high-temperature activation.

It also includes a prep gas inlet, four carrier gas inlets and an optional capability to fit in a mass spectrometer or other external detector fixed to the exhaust port. With hands-on calibration and dosing procedure, the ChemiSorb 2720 serves as an excellent teaching tool for gas-solid surface interaction studies.

The ChemiSorb 2750 has been additionally improved with the inclusion of an injection loop valve for pulsing active gases on the catalyst. It has an improved dual-port design that enables in-situ preparation and analysis of a pair of samples.

The two sample ports can be utilized either as a degas port or an analysis port. This prevents the need to shift the sample and thus reduces the risk of contaminating the catalyst during transfer, and saves precious laboratory time.

The ChemiSoft TPx (temperature-programmed controller and software) is an optional system that expands the capabilities of the ChemiSorb 2720 and 2750 analyzers to include temperature-programmed oxidation, reduction and desorption (TPO, TPR and TPD). Data reduction and reporting options are also included in the ChemiSoft TPX software.

Chemical and Physical Adsorption Tests with the ChemiSorb 2720 and 2750

Image Credit: Micromeritics Instrument Corporation

Features and Benefits

  • Rapid cooling of samples to ambient conditions after high-temperature activation reduces the time for analysis
  • Dual port for sample preparation and analysis increases throughput by stimulating a catalyst during the analysis of a different sample
  • Optional ChemiSoft TPx System improves analytical versatility
  • Optional interface to an external detector, like a mass spectrometer, enhances the detection capability

Other Equipment by this Supplier