Microreactor with copper oxide nanostructured films for catalytic gas phase oxidations

Microreactor Based on Trimetallic Nano-Oxides Obtained by In Situ Growth from German Silver

“…Among the analyzed samples, CuZnNi(1)RT stands out since it showed the lowest T 50 (Table 2) in addition to the fact that the preparation of this catalyst implied a short treatment time (1 h) and without any energy consumption. The behavior of this catalytic film stands out if compared with that of similar films obtained by the same method onto copper [28] or brass substrates [29], showing the lowest T 100 and T 50 values as well as the highest Ra value. The high activity of this film is due to highly dispersed small nanometric CuO x and ZnO phases in close contact, which are also firmly stabilized onto the surface of the substrate, probably because they were generated through the direct growth from the substrate itself.…”

“…Taking these criteria into account, CuO x -based nanostructured films, adherent and adjustable in terms of their composition and morphology, were synthesized from the oxidation of copper substrates [27]. When such films were placed in a microreactor, a remarkable catalytic performance and stability in the CO oxidation was observed [28]. Recently, nanostructured CuO x -ZnO growths have been obtained from the controlled oxidation of brass substrates, which provide efficient microreactors due to the intimate contact between both nanometric oxide phases [29].…”