INVESTIGADORES
SAPAG Manuel Karim
artículos
Título:
Adsorption micro calorimeter: Design and electric calibration
Autor/es:
V. GARCÍA-CUELLO, J. C. MORENO-PIRAJAN, L. GIRALDO-GUTIERREZ, K. SAPAG, G. ZGRABLICH
Revista:
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
Editorial:
SPRINGER
Referencias:
Año: 2009 vol. 97 p. 711 - 715
ISSN:
1388-6150
Resumen:
In this work, it is described an innovative heat
flux micro calorimeter Tian-Calvet type designed to measure
adsorption heats and reactions as well as adsorption isotherms.
It consists in an adsorption instrument for volumetric
gases, which is coupled to the micro calorimeter. The
changes in the pressure are monitored by means of high
sensitivity and high precision pressure transducers. The
micro calorimeter has thermo elements that work by a Seebeck
effect, in a twin cells system. The cells are inside a box
in which the temperature can be adjusted from 77 to 300 K.
The sensitiveness of the calorimeter is established by
applying a perfectly known electric work. The results corresponding
to the electric calibration, the base line stability
determination and the time constant in the equipment are
shown