In-line dispersion–precipitation method for the synthesis of metal-substituted dawsonites. Genesis of oxide materials with superior properties

Abstract

Thermal activation of metal-substituted dawsonite-type compounds synthesized by a novel in-line dispersion-precipitation (ILDP) method leads to oxide materials with superior properties of component dispersion, porosity, thermal stability, and improved catalytic performance.

Influence of the Divalent Cation on the Thermal Activation and Reconstruction of Hydrotalcite-like Compounds

“…39,40 Aqueous solutions of the respective metal nitrates Mg(NO 3 ) 2 ‚6H 2 O, Ni(NO 3 ) 2 ‚6H 2 O, and Al(NO 3 ) 3 ‚9H 2 O and the precipitating agent (NaOH + Na 2 CO 3 ) were continuously fed at room temperature by means of peristaltic pumps into a homemade microreactor with an effective volume of ca. 6 cm 3 .…”

Stability and inter-conversion of synthetic dawsonites in aqueous media

“…They are also attractive precursors for ceramic and catalytic-grade alumina-based materials with remarkable properties (Pitsch et al, 2001;Ali et al, 2005;Santiago et al, 2006;Santiago and Pérez-Ramírez, 2007; 0016-7037/$ -see front matter Ó 2010 Elsevier Ltd. All rights reserved. doi:10.1016/j.gca.2010.09.013 Stoica et al, 2009a,b,c;Masuda et al, 2009).…”

Tuning Nanomaterials' Characteristics by a Miniaturized In‐Line Dispersion–Precipitation Method: Application to Hydrotalcite Synthesis

“…The applicability of the ILPD method to the synthesis of other types of materials with predictable properties should be highlighted. Apart from the case study of MgAl hydrotalcites illustrated in this Communication, we have successfully applied the ILDP method to the synthesis of different hydrotalcite compositions (varying the combination of metals and their molar ratio) and other clay-type materials such as metal-substituted dawsonites [20] . Hence, we expect it to become a widely used approach to overcoming well-known drawbacks of the often applied batch precipitation.…”