Controllable preparation, structural characterization and application of rare earth element - containing layered double hydroxides
type: Dataset
description: Layered double hydroxides (LDHs) and rare earth elements (REEs) have both attracted extensive attention because of their structures and properties. The layered structure of LDHs makes it possible for many functional ions to be incorporated and the uniform dispersion of metal - organic anions in interlayer galleries or metal cations in layers extends the applications of layered materials to a wide variety of fields, whilst the electronic structure of REEs offers many advantages in the areas of optical, magnetic and catalytic materials. Catalytic wet oxidation (CWO) is a promising technique for destruction of organic pollutants, of which phenol is a simple representative, in water under mild conditions. Common heterogeneous catalysts for CWO can be divided into three series: noble metals, transition metals (especially copper) and rare earths, each of which has their own advantages and shortcomings. Co-existence of two types of catalyst components may show a higher catalytic efficiency. It is, therefore, of interest to prepare hybrid materials based on ZnAl- or CuZnAl-LDHs incorporating rare earth elements such as Z. Chang : Controllable preparation, structural characterization and application of rare earth element - containing layered double hydroxides II Ce or Eu in order to investigate the potential synergistic effect between the two components and the resultant influence on catalytic properties. A continuous co-precipitation method under steady-state conditions was first developed for the preparation of nanometer-size LDH particles using Zn2Al(OH)6(CO3)0.5*2H2O as prototype. The effects of varying the operating conditions on the structural and textural properties of LDHs were studied, including total cation concentration, solvent, residence time, pH and intercalation anion. Increasing either the cation concentration or the fraction of ethylene glycol (EG) in EG/H2O mixtures affects salt solubility and supersaturation, which results in smaller crystallites, larger s…
landing page: https://theses.hal.science/tel-00703250
identifier: NNT: 2006CLF21681
keyword: catalyseurs
keyword: catalyst
keyword: cedipic33-
keyword: chimmatechemical-sciencesmaterial-chemistry
keyword: composes-dinsertion
keyword: cu-ce-synergistic-effect
keyword: infoeu-reposemanticsdoctoralthesis
keyword: intercalation
keyword: layered-double-hydroxides-ldhs
keyword: oxydation
keyword: rare-earth-elements-rees
keyword: theses
issued: 2026-05-16T09:38:21.838482
modified: 2026-05-16T09:38:21.838488
language: en
contact point: Organization
  fn: CCSD

test_moissonnage_selune
type: Agent

Controllable preparation, structural characterization and application of rare earth element - containing layered double hydroxides
type: Distribution
format: HTML
access URL: https://theses.hal.science/tel-00703250
issued: 2026-05-16T09:38:21.853008
modified: 2026-05-16T09:38:21.797401