Oxidation of methanol to formaldehyde in microchannel reactors: prospects and limitations

摘要: Some features of the behavior highly exothermic selective oxidation processes in a monolith microchannel reactor (MCR) are studied experimentally using methanol to formaldehyde on Fe–Mo catalyst as an example. The process can be intensified considerably by intensively withdrawing heat from reaction zone, operating at increased concentrations up 12–12.5%, and particles smaller than 0.25 mm increase useful product yield per unit volume 7–12 times, compared multitubular reactors. thermal mode MCRs is close optimum theoretical regime for this class processes, thereby making it easier achieve high selectivity formaldehyde. Due abovementioned reduction activity MCRs, prospects must estimated along with solving problem stability. use appears very promising technologically sound when dealing catalytic whose intensification not accompanied appreciable activity.