Synthesis of pseudoboehmite – effect of acetate ion

Autor(es)

Matheus Francelino Bezerra da Silva ^[1] ; Caroline Valadão Pacheco ^[2] ; Renato Meneghetti Peres ^[3] ; Leila Figueiredo de Miranda ^[4] ; Nelson Batista de Lima ^[5] ; Rene Ramos de Oliveira ^[6] ; Ayrton Bernussi ^[7] ; Antônio Hortencio Munhoz Junior ^[8]

Afiliação do(s) autor(es)

^[1] Universidade Presbiteriana Mackenzie. Escola de Engenharia - Brasil

^[2] Universidade Presbiteriana Mackenzie. Escola de Engenharia - Brasil

^[3] Universidade Presbiteriana Mackenzie. Escola de Engenharia - Brasil

^[4] Universidade Presbiteriana Mackenzie. Escola de Engenharia - Brasil

^[5] Instituto de Pesquisas Energéticas e Nucleares - Brasil

^[6] Instituto de Pesquisas Energéticas e Nucleares - Brasil

^[7] Texas Tech University. Department of Electrical and Computer Engineering - Estados Unidos

^[8] Universidade Presbiteriana Mackenzie. Escola de Engenharia - Brasil

• Tipo de documento: Artigo Científico
• Fonte: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 23, n. 1 2020-03-13.

Resumo

Abstract Pseudoboehmite (AlOOH.xH2O) is one of the precursors of alumina. Its calcination produces different phases of alumina and at 1200º 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. (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