Reactivity of young chars via energetic distribution measurements
The temperature programmed desorption (TPD) has become a standard technique for investigating the physico-chemical state of adsorbed species on surfaces. In this reporting period, a new TPD-MS/TGA (mass spectrometry/thermal gravimetric analysis) system has been designed, and all the necessary components have been acquired. This new system is built around a new Cahn D-200 digital recording microbalance, which was recently purchased for this purpose. The TPD reactor essentially becomes the hangdown'' tube for this microbalance. The control and data logging of this new experimental system will be performed using a Macintosh II microcomputer with a GW Instruments 625 Jr. interface. A new hangdown'' tube is being constructed, as well as a new furnace to accommodate it.
"The temperature programmed desorption (TPD) has become a standard technique for investigating the physico-chemical state of adsorbed species on surfaces. In this reporting period, a new TPD-MS/TGA (mass spectrometry/thermal gravimetric analysis) system has been designed, and all the necessary components have been acquired. This new system is built around a new Cahn D-200 digital recording microbalance, which was recently purchased for this purpose. The TPD reactor essentially becomes the hangdown'' tube for this microbalance. The control and data logging of this new experimental system will be performed using a Macintosh II microcomputer with a GW Instruments 625 Jr. interface. A new hangdown'' tube is being constructed, as well as a new furnace to accommodate it."@en
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