New synthesis of nanosized Cu–Mn spinels as efficient oxidation catalysts

PREPARACIÓN DE CATALIZADORES BASADOS EN Cu-Mn PARA LA COMBUSTIÓN DE n-HEXANO

“…Finalmente, el compuesto orgánico combustiona quedando como producto final el óxido correspondiente. Se utilizaron dos agentes de combustión: etilenglicol (Método EG) y ácido [17][18][19][20][21] cítrico (Método CIT), considerando su amplia aplicación en la literatura .…”

Dehydration of Alginic Acid Cryogel by TiCl4 vapor: Direct Access to Mesoporous TiO2@C Nanocomposites and Their Performance in Lithium‐Ion Batteries

“…However, cellulose is the most widely used template for such an approach, as both a carbon source and template in the preparation of nanocomposite such as Ag@TiO 2 /C or SnO 2 /C as negative electrode materials for lithium‐ion batteries (LIBs). Recently, the use of AA has been developed in a sol–gel templated process to elaborate porous metal oxide‐based catalyst . In terms of green chemistry, these processes present some drawbacks when using water or solvents; sometimes high temperatures (>100 °C) and reagents requiring synthetic and purification steps from the cheapest metal chloride, TiCl 4 in the case of Ti‐based metal oxides …”

“…Recently,t he use of AA has been developed in as ol-gelt emplated process to elaborate porous metal oxide-based catalyst. [38,39] In terms of green chemistry, these processesp resent somed rawbacks when using water or An ew strategy for the synthesis of mesoporous TiO 2 @C nanocomposites through the direct mineralization of seaweed-derived alginic acidc ryogel by TiCl 4 through as olid/vapor reaction pathway is presented. In this synthesis, alginic acid cryogel can have multiple roles;i )mesoporoust emplate, ii)carbon source,a nd iii)oxygen sourcef or the TiO 2 precursor,T iCl 4 .T he resultingT iO 2 @alginica cid composite was transformed either into pure mesoporous TiO 2 by calcination or into mesoporous TiO 2 @C nanocomposites by pyrolysis.…”

Highly Efficient Elimination of Carbon Monoxide with Binary Copper-Manganese Oxide Contained Ordered Nanoporous Silicas

“…It would be better to cite some examples [16, 17]. The binary Cu-Mn oxides have flexible metal valences (Cu 1+ / 2+ and Mn 3+ / 4+ ) which give rise to their specific properties and notable catalytic activities in carbon monoxide elimination [18, 19]. In particular, the incomplete Mn 1.5 Cu 1.5 O 4 spinel structure of the binary Cu-Mn oxide catalyst was more active in the removal of carbon monoxide at room temperature than that of the same spinel structure with CuO [19–21].…”