Sorption Analyzers

Gravimetric Sorption Analyzers Chemisorption/Physisorption (UHV to 1000 bar) Adsorption Isotherms (BET Surface Analysis) TPD, TPO, TPR measurements (-196 to 1800 °C) Sorption Enthalpies (Simultaneous TG/DSC- sensor) In-situ Gas Analysis (FTIR, Raman, ELIF) Corrosive Atmospheres Magnetic Suspension Balance Temperature Control On Request Achievable Pressure

TG and DSC curves of TiH2 in Argon at 10 K/min Hydrogen Adsorption on Titanium at 700°C Adsorption Isotherm of Hydrogen on Titanium

Fast and Easy determination of Sorption Heats Time [sec (from introduction of H2)] The measurement of sorption, oxidation or reduction heats of cata- lysts performed with volumetric methods are normally very time- consuming and need many hours. The LINSEIS Gravimetric Sorption Analyzer STA HP, which measures both weight change and DSC- signal, provides a much faster alternative. Within 15 minutes or less the sorption heats can be measured. Chemisorption and catalytic oxidation or reduction are exothermic re- actions. The heat involved can be easily monitored with the integrated DSC- sensor of...

The distribution and relative strength of acid sites in zeolithes are important indicators of its catalytic properties. The acidity of zeolithes can be accurately measured with the temperature programmed desorption (TPD) of a base from the zeolithe surface. The Linseis gravimetric Sorption Analyzers are useful tools for characterizing TPD, The figure below shows the chemidesorption of ammonia from a zeolithe catalyst surface. Weakly bound ammonia molecules are desorped between 100 and 250 °C. Between 260 and 500 °C strongly bound ammonia is desorped. The amounts of desorped ammonia can be quantitatively...

In-situ FTIR measurement during C02 gasification of an anthracite in a TGA system (sample temperature: 1100°C, pure C02 atmosphere [gas flow rate: 20 ml/min at 273 K, 0.013 bar] during FTIR measurement, FTIR measurement: 30 s, CO absorption at 4300 cm-1, C02 absorption LINSEIS GmbH Tel.: (+49) 9287-880 - 0 IjnQpjQ OfllTI LINSEISInc- Tel.: (+1) 609 223 2070 Vielitzerstr. 43 Fax: (+49) 9287-70488 « W WilllloClOiUUIII 109 North Gold Drive Fax: (+1) 609 223 2074 95100 Selb E-mail: [email protected] Robbinsville, NJ 08691 E-mail: [email protected]