Please use this identifier to cite or link to this item:
Title: Preparation and characterization of lanthanum palygorskite clays as acid catalysts
Authors: Melo, Dulce Maria de Araújo
Ruíz, Juan Alberto Chavez
Melo, Marcus Antônio de Freitas
Sobrinho, Eledir Vitor
Martinelli, Antonio Eduardo
Keywords: Lanthanum;Palygorskite;Mineral clays;Characterization
Issue Date: 7-Oct-2002
Publisher: Elsevier
Citation: FERNANDES, J.D.G; MELO, D.M.A; ZINNER, L.B; SALUSTIANO, C.M; SILVA, Z.R; MARTINELLI, A.E; CERQUEIRA, M; ALVES JÚNIOR, C; LONGO, E; BERNARDI, M.I.B. Low-temperature synthesis of single-phase crystalline LaNiO3 perovskite via Pechini method. Materials Letters, [S.L.], v. 53, n. 1-2, p. 122-125, mar. 2002. Disponível em: Acesso em: 25 nov. 2020.
Portuguese Abstract: Palygorskite clays containing 2, 4, 6 or 10% lanthanum (w/w) were prepared by ion-exchange from acid-leached natural clays. Samples were characterized by chemical and thermogravimetric analysis, X-ray diffraction, infrared spectroscopy, and N2 adsorption. Isopropyl alcohol was transformed in order to improve the acid behavior of the material. The introduction of La3+ did not change the structure of the palygorskite. Surface areas as high as 177.6 m2 g−1 were measured for catalysts containing 2% lanthanum. This material also showed a very good activity for alcohol dehydration
ISSN: 0925-8388
Appears in Collections:CT - DEMAT - Artigos publicados em periódicos
CT - DEQ - Artigos publicados em periódicos
IQ - Artigos publicados em periódicos

Files in This Item:
File Description SizeFormat 
PreparationCharacterization_MARTELLI_2002.pdf254,5 kBAdobe PDFThumbnail

This item is licensed under a Creative Commons License Creative Commons