Synthesis of pseudoboehmite - effect of acetate ion

Autor(es)

Bezerra da Silva, Matheus Francelino ^[1] ; Pacheco, Caroline Valadao ^[1] ; Peres, Renato Meneghetti ^[1] ; de Miranda, Leila Figueiredo ^[1] ; de Lima, Nelson Batista ^[2] ; de Oliveira, Rene Ramos ^[2] ; Bernussi, Ayrton ^[3] ; Munhoz Junior, Antonio Hortencio ^[1]

Afiliação do(s) autor(es)

^[1] Univ Presbiteriana Mackenzie, Escola Engn, Rua Consolacao 930, BR-01302907 Sao Paulo, SP - Brazil

^[2] IPEN, Sao Paulo, SP - Brazil

^[3] Texas Tech Univ, Dept Elect & Comp Engn, Lubbock, TX 79409 - USA

• Tipo de documento: Artigo Científico
• Fonte: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 23, n. 1 2020.
• Citações Web of Science: 0

Resumo

Pseudoboehmite (AlOOH center dot xH(2)O) is one of the precursors of alumina. Its calcination produces different phases of alumina and at 1200 degrees C the most stable phase, alpha-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. (AU)

• Processo FAPESP: 17/22396-4 - "síntese de nanoparticulas de pseudoboemita"
• Beneficiário: Antonio Hortencio Munhoz Junior
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 10/19157-9 - Síntese de pseudoboemitas modificadas visando à obtenção de nanosistemas para liberação controlada de fármacos
• Beneficiário: Antonio Hortencio Munhoz Junior
• Modalidade de apoio: Auxílio à Pesquisa - Regular