Add-on to gas and vapour adsorption analyser module provides full catalyst evaluation

Citation

(2009), "Add-on to gas and vapour adsorption analyser module provides full catalyst evaluation", Anti-Corrosion Methods and Materials, Vol. 56 No. 5. https://doi.org/10.1108/acmm.2009.12856ead.002

Add-on to gas and vapour adsorption analyser module provides full catalyst evaluation

Article Type: New materials and equipment From: Anti-Corrosion Methods and Materials, Volume 56, Issue 5

Comprehensive analysis of chemisorption measurements can now be carried out with the TPDPro add-on module for the Belsorp Max gas and vapour adsorption analyser from BEL. Available in the UK from Merrow Scientific, the new module adds dynamic flow analysis to the high-end volumetric adsorption system.

Particularly suitable for catalyst evaluation and reaction studies, the TPDPro allows catalysts to be comprehensively characterised using physisorption or chemisorption techniques. Analyses include temperature programmed desorption (TPD), temperature programmed reduction, temperature programmed oxidation and pulse titration for measuring metal dispersion rates.

“The TPDPro add-on allows the Belsorp Max to measure just about everything you need for catalyst evaluation, including pore size, surface area, vapour sorption, chemisorption, etc.” said Merrow Scientific Managing Director, Ben Proudlove.

The instrument’s highly sensitive thermal conductivity detector detects concentrations in the gas stream, enabling the amount absorbed to be calculated from the concentration change. Measurements can be made across a broad range of pressures up to 133 kPa.

Evaluation of catalyst performance is particularly important in sectors such as fuel cells, the automotive industry, and chemical and petrochemical engineering.

The Belsorp Max is equipped with three independent analysis ports and a dedicated port for saturation vapour pressure measurement. Each port has pressure sensors, enabling up to three simultaneous and independent sample measurements.

Unlike with comparable instruments, a mass flow controller is incorporated for accurate regulation of gas flow rate. It also has a loop with a thermometer and a pressure sensor for enhanced accuracy and reproducibility of chemisorption measurement.

The instrument incorporates BEL’s Advanced Free Space Measurement (AFSM(TM)) method to compensate for free space change in the sample cell. This significantly increases measurement accuracy and repeatability (Figure 1).

Figure 1 Dynamic flow analysis can be provided with the TPDPro add-on module for the Belsorp Max

More information is available at: www.merrowscientific.com