Catalytic conversion of high-GWP gases NO and CH to syngas (H + CO) on SiO@Ni-Cr layered nano-oxide-coated monolithic catalyst.

Layered double hydroxides (LDHs) are 2D nano-sheets where different M and M metal cations are uniformly distributed in Mg(OH) brucite-like sheets and various charge-compensating anions (A) are present in their interlayer spaces. This work includes preparation of different SiO@Ni/Cr mixed-metal layered nano-oxide-type catalysts by the calcination of SiO@Ni-Cr LDH nano-composite-based alcogel coated over a honeycomb monolithic substrate and their use as a catalytic device for the study of catalytic partial oxidation (CPO) of CH both in the presence of O and in the presence of NO under atmospheric pressure at different temperatures not exceeding 500 °C to study the effect of NO on the CPO of CH. It was observed that in the presence of O the yield of syngas (H + CO) did not exceed 90% whereas in the presence of NO about 99.