Fig. 7: Schematic illustration of the effect of catalyst structure on CO2 hydrogenation to methanol.
From: Engineering nanoscale H supply chain to accelerate methanol synthesis on ZnZrOx

a ZnZrOx catalyst without any metal promotion. b Pd-supported ZnZrOx catalyst which represents the traditional metal/oxide catalyst harnessing metal promotion. c Pd/CNT + ZnZrOx catalyst which represents a conceptually new catalyst system harnessing metal promotion with a hydrogen dispenser.