Preparation of Malonamide−MCM-41 Materials for the Heterogeneous Extraction of Radionuclides

Autor:	Mark L. Russell, Philippe Trens, Jan-Olov Liljenzin, Lena Spjuth, Michael J. Hudson
Rok vydání:	2002
Předmět:	Aqueous solution Chemistry General Chemical Engineering Extraction (chemistry) chemistry.chemical_element Americium General Chemistry Industrial and Manufacturing Engineering Chemical engineering MCM-41 Specific surface area Europium Hybrid material Nuclear chemistry Mesoporous silicate
Zdroj:	Industrial & Engineering Chemistry Research. 41:5220-5225
ISSN:	1520-5045 0888-5885
DOI:	10.1021/ie020187y
Popis:	The grafting of malonamide-type molecules onto the surface of mesoporous silicate MCM-41 in a two-step process is demonstrated. This synthesis route yields a large surface concentration of accessible extraction sites as high as 2.5 μmol m-2. The textural properties of the materials are shown to be preserved, as demonstrated by XRD and TEM experiments. These new hybrid materials have been found to separate americium(III) and europium(III) from aqueous solution. The regeneration of these hybrid materials is possible by simply changing the pH conditions. The capabilities of these new materials compare with those of the homogeneous-phase extraction process.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4674f99ec6c94cc19e2a924e067d82e6 https://doi.org/10.1021/ie020187y Zobrazit plný text záznamu