A method for the estimation of the enthalpy of formation of mixed oxides in Al2O3?Ln2O3 systems

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F09%3A00021471" target="_blank" >RIV/60461373:22310/09:00021471 - isvavai.cz</a>

Alternative codes found

RIV/60461373:22340/09:00021857

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

A method for the estimation of the enthalpy of formation of mixed oxides in Al2O3?Ln2O3 systems

Original language description

A new method is proposed for the estimation of the enthalpy of formation (Delta H-ox) of various Al2O3-Ln(2)O(3) mixed oxides from the constituent binary oxides. Our method is based on Pauling's concept of electronegativity and, in particular, on the relation between the enthalpy of formation of a binary oxide and the difference between the electronegativities of the oxide-forming element and oxygen. This relation is extended to mixed oxides with a simple formula given for the calculation of Delta H-ox.The parameters of this equation were fitted using published experimental values of Delta H-ox derived from high-temperature oxide melt solution calorimetry. Using our proposed method, we obtained a standard deviation (sigma) of 4.87 kJ mol(-1) for thisdata set. Taking into account regularities within the lanthanide series, we then estimated the Delta H-ox values for Al2O3-Ln(2)O(3) mixed oxides. The values estimated using our method were compared with those obtained by Aronson's and Zh

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CF - Physical chemistry and theoretical chemistry

OECD FORD branch

—

Project

—

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2009

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

J. Solid State Chem.

ISSN

0022-4596

e-ISSN

—

Volume of the periodical

182

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

5

Pages from-to

—

UT code for WoS article

000265122500013

EID of the result in the Scopus database

—