+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Determination of the heat of hydride formation/decomposition by high-pressure differential scanning calorimetry (HP-DSC)

Determination of the heat of hydride formation/decomposition by high-pressure differential scanning calorimetry (HP-DSC)

Journal of Physical Chemistry. B 111(46): 13301-6

Among the thermodynamic properties of novel materials for solid-state hydrogen storage, the heat of formation/decomposition of hydrides is the most important parameter to evaluate the stability of the compound and its temperature and pressure of operation. In this work, the desorption and absorption behaviors of three different classes of hydrides are investigated under different hydrogen pressures using high-pressure differential scanning calorimetry (HP-DSC). The HP-DSC technique is used to estimate the equilibrium pressures as a function of temperature, from which the heat of formation is derived. The relevance of this procedure is demonstrated for (i) magnesium-based compounds (Ni-doped MgH2), (ii) Mg-Co-based ternary hydrides (Mg-CoHx) and (iii) Alanate complex hydrides (Ti-doped NaAlH4). From these results, it can be concluded that HP-DSC is a powerful tool to obtain a good approximation of the thermodynamic properties of hydride compounds by a simple and fast study of desorption and absorption properties under different pressures.

(PDF emailed within 0-6 h: $19.90)

Accession: 052536432

Download citation: RISBibTeXText

PMID: 17973422

DOI: 10.1021/jp075954r

Related references

Enthalpy of formation of pargasite by high-temperature solution calorimetry and heat capacity of pargasite and fluoropargasite by differential scanning calorimetry. European Journal of Mineralogy 15(4): 617-628, 2003

Pressure-modulated differential scanning calorimetry. An approach to the continuous, simultaneous determination of heat capacities and expansion coefficients. Analytical Chemistry 78(4): 984-990, 2006

High pressure differential scanning calorimetry investigations on the pressure dependence of the melting of paracetamol Polymorphs I and II. Journal of Pharmaceutical Sciences 96(10): 2784-2794, 2007

High-pressure differential scanning calorimetry: Comparison of pressure-dependent phase transition in food materials. Journal of Food Engineering 75(2): 215-222, 2006

Determination of the metabolic rates of plant tissues by heat conduction differential scanning calorimetry. Plant Physiology (Rockville) 89(4 SUPPL): 72, 1989

High-pressure differential scanning calorimetry of colorant products. Journal of Cosmetic Science 58(6): 621-627, 2008

Investigations of cosmetic treatments on high-pressure differential scanning calorimetry. Journal of Cosmetic Science 58(4): 319-327, 2007

High-pressure differential scanning calorimetry: evaluation of phase transition in pork muscle at high pressures. Journal of food process engineering7(5): 377-391, 2004

Quantitative determination of the specific heat and the glass transition of moist samples by temperature modulated differential scanning calorimetry. International Journal of Pharmaceutics (Kidlington) 217(1-2): 173-181, 17 April, 2001

High pressure differential scanning calorimetry and wet bundle tensile strength of weathered wool. Textile research journal: ication of Textile Research Institute Inc and the Textile Foundation 64(11): 690-695, 1994

Utilization of Differential Scanning Calorimetry technique for determination of high sulfur content. Thermochimica Acta 134: 435-440, 1988

Application of pressure-modulated differential scanning calorimetry to the determination of relaxation kinetics of multilamellar lipid vesicles. Biophysical Chemistry 126(1-3): 218-227, 2006

Analysis of leaf and needle litter decomposition by differential scanning calorimetry and differential thermogravimetry. Biology & Fertility of Soils 9(2): 188-191, 1990

High-pressure differential scanning calorimetry (DSC): equipment and technique validation using water-ice phase-transition data. Journal of food process engineering7(5): 359-376, 2004

Evaluation of high hydrostatic pressure sensitivity of Staphylococcus aureus and Escherichia coli O157:H7 by differential scanning calorimetry. International Journal of Food Microbiology 87(3): 229-237, 2003