𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Synthesis of Cd/(Al+Fe) layered double hydroxides and characterization of the calcination products

✍ Scribed by M.R. Pérez; C. Barriga; J.M. Fernández; V. Rives; M.A. Ulibarri

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
438 KB
Volume
180
Category
Article
ISSN
0022-4596

No coin nor oath required. For personal study only.

✦ Synopsis

Layered double hydroxides (LDHs) containing Cd(II), Al(III), and Fe(III) in the brucite-like layers with different starting Fe/Al atomic ratios and with nitrate as counteranion have been prepared following the coprecipitation method at a constant pH value of 8. An additional Cd(II),Al(III)-LDH sample interlayered with hexacyanoferrate(III) ions has been prepared by ionic exchange at pH 9. The samples have been characterized by elemental chemical analysis, powder X-ray diffraction (PXRD), and FT-IR spectroscopy. Their thermal stability has been assessed by thermogravimetric and differential thermal analyses (TG-DTA) and mass spectrometric analysis of the evolved gases. The PXRD patterns of the solids calcined at 800 1C show diffraction lines corresponding to Cd(Al)O and spinel-type materials, which precise nature (CdAl 2 O 4 , Cd 1Àx Fe 2+x O 4 , or Cd x Fe 2.66 O 4 ) depends on location and concentration of iron in the parent material or precursor.

📜 SIMILAR VOLUMES

Characterization of Calcined and Reduced
Characterization of Calcined and Reduced Multi-Component Co−Ni−Mg−Al-Layered Double Hydroxides
✍ Didier Tichit; Solange Ribet; Bernard Coq 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 335 KB 👁 2 views

Several Co-Ni-Mg-Al-layered double hydroxides (LDH) have been synthesized by coprecipitation at constant pH = 9. All samples present well crystallized, layered structures, no excess phases were detected by X-ray diffraction, and the lattice a parameter followed the Vegard correlation. The cations th

Synthesis and Thermal Decomposition of M
Synthesis and Thermal Decomposition of Mn–Al Layered Double Hydroxides
✍ Sumio Aisawa; Hidetoshi Hirahara; Hiroaki Uchiyama; Satoshi Takahashi; Eiichi Na 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 339 KB

In this paper, the synthesis and thermal decomposition behavior of hydrotalcite-like Mn-Al layered double hydroxide ðLDHÞ have been investigated. First, the Mn-Al LDH was synthesized by the coprecipitation method using various anions such as Cl À , CO 3 2À , NO 3 À , SO 4 2À or dicarboxylic acids ðD