Washcoating of Pt-ZSM5 onto aluminium foams

Aluminium anodisation for Au-CeO2/Al2O3-Al monoliths preparation

“…The formation of porosity has been attributed to the accelerated dissolution of the anodic alumina at the pore bottom due to the high electric field that exists across the barrier layer [19,20]. In aluminium foams, when the anodisation conditions are extreme, an important cracking of the surface appears with wide and deep cracks that depend on the anodisation parameters [13]. The surface roughness can be used subsequently to improve the adhesion of the catalytic coatings promoting its mechanical anchorage.…”

“…However, under certain circumstances, it is preferable to use metallic substrates since they present a series of comparative advantages with respect to ceramics, i.e., higher mechanical resistance, higher thermal conductivity and better prospects of achieving high cell densities [8]. Many different metals and alloys have been proposed for the manufacturing of metallic monoliths in the search for mechanical, chemical and thermal stability and availability in thin foils, such as Ni-Cr alloys [9], ferritics steel alloys containing Al [5,10], AISI 304 stainless steel [11] and aluminium [5,12,13]. Nevertheless, the preparation of metallic monoliths has a critical point, the adhesion of the catalytic coating to the metallic substrate.…”

Zirconium Phosphate Coating on Aluminum Foams by Electrophoretic Deposition for Acidic Catalysis

“…[8] The main disadvantage of metallic monoliths compared to ceramics is low adhesion of the catalytic coating to the metallic substrate, necessitating a pretreatment to create an active surface, for example, an anodization procedure for aluminum foam with formation of an alumina layer. [9] Nevertheless, the high electric conductivity of metallic foams renders them suitable for the use of electrophoretic deposition (EPD), which creates a catalytic layer on the surface of the foam. This method involves application of electrical potential to the material to attract charged particles from solution.…”

MnCu Catalyst Deposited on Metallic Monoliths for Total Oxidation of Volatile Organic Compounds

“…However, under certain circumstances, it is preferable to use metallic substrates since they present a series of comparative advantages with respect to ceramics, i.e., higher mechanical resistance, higher thermal conductivity and better prospects of achieving high cell densities [7]. Many different metals and alloys have been proposed for the manufacturing of metallic monoliths in the search for mechanical, chemical and thermal stability and availability in thin foils, such as Ni-Cr alloys [8], ferritics steel alloys containing Al [4,9], AISI 304 stainless steel [10] and aluminium [4,11,12]. Nevertheless, the M. R. Morales (&) Á B. P. Barbero Á L. E. Cadús Instituto de Investigaciones en Tecnología Química (INTEQUI), Universidad Nacional de San Luis-CONICET, Chacabuco y Pedernera, 5700 San Luis, Argentina e-mail: mrmorale@unsl.edu.ar preparation of metallic monoliths has a critical point, the adhesion of the catalytic coating to the metallic substrate.…”