Synthesis of amorphous magnesium silicates with different SiO2:MgO molar ratios at laboratory and pilot plant scales

Aysa-Martínez, Y. (Universidad de Zaragoza) ; Anoro-López, S. ; Cano, M. ; Julve, D. ; Pérez, J. ; Coronas, J. (Universidad de Zaragoza)

Resumen: In this study, amorphous magnesium silicates with different SiO2:MgO molar ratios were synthesized by a precipitation reaction from magnesium sulfate (MgSO4), sodium silicate (Na2SiO3) and water. At laboratory scale, it was studied the effect of the SiO2:Na2O molar ratio of the Na2SiO3 solution used as a reagent on the properties of the amorphous magnesium silicates obtained. It was observed that this ratio is a key parameter in the synthesis process of these materials. The chemical composition and principal physicochemical properties were established, including textural properties from nitrogen adsorption/desorption isotherms and X-ray fluorescence. Moreover, some laboratory tests were scaled-up in an industrial pilot plant (ca. 103 times larger, i.e. 700 kg of wet product) demonstrating the high scalability of the materials obtained. The properties of the scaled-up materials were compared to those of different commercial materials containing magnesium silicate, such as Florisil® and Magnesia 430®. Analogous properties were achieved in terms of particle size distribution, humidity and pH and conductivity in solution.

Idioma: Inglés

DOI: 10.1016/j.micromeso.2021.110946

Año: 2021

Publicado en: MICROPOROUS AND MESOPOROUS MATERIALS 317 (2021), 110946 [8 pp.]
ISSN: 1387-1811

Factor impacto JCR: 5.876 (2021)

Categ. JCR: CHEMISTRY, APPLIED rank: 15 / 72 = 0.208 (2021) - Q1 - T1
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 106 / 344 = 0.308 (2021) - Q2 - T1
Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 51 / 108 = 0.472 (2021) - Q2 - T2
Categ. JCR: CHEMISTRY, PHYSICAL rank: 58 / 165 = 0.352 (2021) - Q2 - T2

Factor impacto CITESCORE: 8.9 - Engineering (Q1) - Physics and Astronomy (Q1) - Materials Science (Q1)

Factor impacto SCIMAGO: 0.924 - Chemistry (miscellaneous) (Q1) - Nanoscience and Nanotechnology (Q1) - Mechanics of Materials (Q1) - Condensed Matter Physics (Q1)

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Ingeniería Química (Dpto. Ing.Quím.Tecnol.Med.Amb.)