Stability and dissolution kinetics of Pd/MCM-41

Autor:	E. J. Reardon, C. P. Guthrie
Rok vydání:	2014
Předmět:	Materials science Mechanical Engineering Kinetics Inorganic chemistry Condensed Matter Physics Reaction rate constant MCM-41 Mechanics of Materials Metastability Degradation (geology) General Materials Science Mesoporous material Porosity Dissolution
Zdroj:	Materials Research Innovations. 19:251-257
ISSN:	1433-075X 1432-8917
DOI:	10.1179/1433075x14y.0000000262
Popis:	The stability of Pd impregnated MCM-41 (Pd/MCM-41) at mass per cent loadings of Pd of 0.12 and 1.2% was investigated over 50 days. Results showed that the silica in Pd/MCM-41 dissolves at a lower rate than in pure MCM-41 and is likely metastable with respect to amorphous silica. Dissolution rates were lower at a higher mass per cent loading of Pd. Simulations of Pd/MCM-41 dissolution kinetics made using Phreeqci indicated log dissolution rate constants of −12.7 and −12.9 for 0.12 and 1.2% Pd/MCM-41, respectively.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7b64f723cb7cce54a55980c20dabcf2b https://doi.org/10.1179/1433075x14y.0000000262 Zobrazit plný text záznamu