Unravelling the Direct Decomposition of NOx over Keggin Heteropolyacids and their Deactivation Using a Combination of Gas-IR/MS and in Situ DRIFT

Keggin heteropolyacids (HPAs) have been known to be efficient NOx absorbers for many years, and to decompose a significant fraction of the NOx species pre-absorbed at 100-150 °C into harmless N2 an...