This showed up on NextBigFuture today https://www.nextbigfuture.com/2020/11/microwave-water-splitting-for-breakthroughs-for-making-hydrogen-oxygen-and-fast-battery-charging.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+blogspot%2Fadvancednano+%28nextbigfuture%29
or https://sci-hub.se/10.1038/s41560-020-00720-6 The efficiency depends on many things but what they do not consider is the most obvious implementation - the automobile and its wasted heat. Imaging your automobile exhaust system redesigned as a tubular reactor and by introducing microwaves. The steam in the exhaust is ‘ free’ so it can be split efficiently and even recombined in situ. This would make sense to drive a turbine or turbocharger with much hotter exhaust than normal while fully burning all the NOx CO and hydrocarbons. It would probably be cheaper as an add-on than the catalytic carburetor which is no loner needed. Jones
