Pulse Titration Data
A reducing gas mixture, typically 5% hydrogen in nitrogen, flows continuously over the sample. The gas flow rate can be varied precisely using either built-in controls or an optional mass flow controller accessory.
Deconvolution of overlapping TPX peaks
is possible in the TPRWin software
A specially designed high-temperature furnace and sample cell with in-situ sample temperature sensing is used to heat catalysts up to more than 1000º C. Linear heating rates are controlled by PC software. Heating rates are operator programmable for maximum flexibility.
The reaction between the sample and reducing gas is monitored by a highly stable thermal conductivity detector (TCD). This reaction rate signal is presented in real time on the computer display while the PC automatically records signal, temperature and time. The resulting peak thus formed is a unique, characteristic "fingerprint" of the sample and the peak maximum represents the temperature of maximum reaction rate.
The reducing gas, or other reactive gas, thus adsorbed during a TPR experiment can be desorbed (TPD) in a separate experiment immediately following the above procedure. Temperature Programmed Oxidation (TPO) is performed in an analogous manner.
ChemBET PULSAR ™ TPR/TPD