Microreactor metal/alloy

Among various preparation techniques of metal/alloy particles on the nanometre scale, the templating synthesis using microporous materials as microreactors is one of the promising methods [7, 10, 11]. Uniform void spaces of porous hosts work to synthesize nanostructured metal/aUoy particles as a guest, which are... 

Array microreactors and mass spectrometry were used to find the best composition of Pt-Pd-Ir for the dehydrogenation of cyclohexane to benzene.210,211 A catalyst library of 37 binary alloys composed of transition metals, Cu, Zn, and Ti or Si, was screened by IR thermography in the hydrogenation of 1-hexyne, and the oxidation of isooctane and toluene.212... 

Sputtering has been used to incorporate a number of catal3 tic metals into microreactor devices. Examples include Pt, Zr, Mo, Pd, Ru, Rh, or alloys such as Pt-Ru. It is a convenient fabrication technique, although some researchers argue that the active surface area of the deposited catalyst is unsatisfactory. For many metals this problem can be overcome by sputtering using an oxygen-rich sputter gas rather than Ar alone. 

Microreactors have been made by machining of common metals such as stainless steel (SS) and specialty alloys such as Hastelloy [16] (a nickel-based alloy) to make falling film microreactors in which gas-liquid reactions were studied. Titanium and aluminum plates with micromachined channel areas have been used as microreactors in a closely packed setup for gas-phase heterogeneous catalyzed reactions [17] (Figure 10.1). 

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