Synthesis of pseudoboehmite-effect of acetate ion

Matheus Francelino Bezerra Da Silva, Caroline Valadão Pacheco, Renato Meneghetti Peres, Leila Figueiredo De Miranda, Nelson Batista De Lima, Rene Ramos De Oliveira, Ayrton Bernussi, Antônio Hortencio Munhoz

Research output: Contribution to journalArticlepeer-review

Abstract

Pseudoboehmite (AlOOH.xH2O) is one of the precursors of alumina. Its calcination produces different phases of alumina and at 1200° C the most stable phase, α-alumina, is formed. The synthesis of pseudoboehmite by the sol-gel process results in a product with high purity, high specific surface area, and high reproducibility. The aging of the pseudoboehmite at temperatures above room temperature results in pseudoboehmites with distinct properties. In this work we report the synthesis of pseudoboehmite by the sol-gel process, using aluminum nitrate and aluminum chloride as precursors, and investigate the effect of acetate ion on crystallinity, adsorption capacity, particle morphology, thermal properties and specific surface area. The X-ray diffraction data of the synthesized pseudoboehmites in the presence of the acetate ion revealed high quality nanoparticles.

Original languageEnglish
Article numbere20190583
JournalMaterials Research
Volume23
Issue number1
DOIs
StatePublished - 2020

Keywords

  • Acetate ion
  • Factorial experimental design
  • Powder synthesis
  • Pseudoboehmite
  • Sol-gel

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