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This product line is manufactured by MicrotracBEL-Japan, specialist in adsorption.   MicrotracBEL,  RETSCH Technology and Microtrac bring together a wide expertise in particle characterization under a strong brand name:  Microtrac MRB GmbH.

The catalyst analyzer BELCAT II is a fully automated chemisorption device which enables comprehensive evaluation and characterization of solid catalysts by means for dynamic gas flow method. Typical performed measurements are:

• Metal dispersion rate on metal support catalyst by pulse chemisorption. Furthermore, pulse chemisorption measurement determines metal surface area and particle size as well
• Catalyst’s acidity or basicity measured by temperature programed desorption spectra
• Reduction/Oxidation properties of a catalytic reaction with respect to temperature: Temperature Programmed Reduction/Oxidation (TPR/TPO)
• Reactivity of adsorbed molecules with Temperature Programmed Reaction (TPRea). Further, BELCAT II chemisorption analyzer measures BET single point, adsorption rate and Breakthrough Curve Measurement evaluation o for example molecular sieves

Application example 1 (see image):

Evaluation of Oxygen Release Capacity (ORC) and Oxygen Storage Capacity (OSC).

On a 3-way catalyst, its primary function is to convert and minimize emissions of harmful species like CO, HC, and NOx by simultaneously oxidation and reduction of exhaust gases. Since the conversion efficiency depends upon air/fuel ratio, for NO a low a/f ratio is desirable while for CO and HC a high a/f ratio is best, this kind of catalysts should possess high OSC. During  service conditions a 3-way catalyst can store oxygen from the exhaust gas stream, usually when the air fuel ratio goes high. When insufficient oxygen is available from the exhaust stream, the stored oxygen is released and consumed. BELCATII enables the evaluation of oxygen release capacity (ORC) from the H₂ consumption by H₂-TPR measurements and OSC by O₂ pulse chemisorption.