2.6 Miscellaneous reactions

An interesting set of miscellaneous reactions is commented in this separated section. In this sense, the production of peptides by mean N-phosphoamino acid and amino acid in aqueous solution and irradiated with MIR was reported [43]. Also, the alpha-alumina powders were described by mean Pechini synthesis using MIR [44]. In other studies, SnO2 nanoparticles were generated applying medium infrared irradiation [45]. The hexagonal form of boron nitride was employed to produce protective coatings using liquid polyborazylene as a boron source and was activated by MIR [46].

In a current research, the preparation of botanical samples enriched with organic matter by mean heating of focused far infrared light by dry ashing method is reported. In the dry process, the NIR was focused by reflection through the goldplated layer; consequently, the energy efficiency was improved and a argon atmosphere was employed to avoid the loss of elements caused by sample combustion at high temperatures, 500°C, in short times of carbonization. It is important to note that this device shows several advantages as the instrument size is small compared

Table 5. Reduction-oxidation reactions.
