Hetereogeneous catalyst characterization can include metal surface area and activity determination, temperature-programmed oxidation, reduction, and desorption, and specific surface area and pore size distribution determination.
All these measurements can be performed with Hiden Isochema instruments. The IGA-003, a gravimetric sorption analyzer for gas mixtures, allows a wide range of measurement types to be performed in a flow of up to four gases, at pressures up to 20 bar, over a wide temperature range. A coupled dynamic sampling mass spectrometer (DSMS) from Hiden Analytical allows simultaneous evolved gas analysis (EGA). The versatile nature of the IGA series allows different measurement types to be performed on a sample in-situ. For example, surface area or porosity determination can be followed by a temperature-programmed study. In addition, a range of vacuum and thermal pretreatments can be performed.
Further versatility can be provided by adding mixed vapor capability to the IGA-003. Single component gas and vapor studies can also be performed using the IGA-002. The XEMIS sorption microbalance can also be used in the same way. A range of catalyst characterization measurements are also offered by the Hiden Analytical CATLAB.