Reactive frontal chromatography

When comparing the intrinsic methanol synthesis activity of both catalysts (turnover frequency [TOF] per surface Cu site measured with N20-reactive frontal chromatography) at the space velocity of 20 mmol/gcatmin, the HT catalyst (0.54 min-1) appears twice as active as the MA catalyst (0.24 min-1). Although both catalysts are exposed to nearly the same reactant concentration, the MA catalyst operates at 11% CO2... 

Chinchen GC, et al. The measurement of copper surface-areas by reactive frontal chromatography. J Catal. 1987 103(1) 79—86. 

The amount of exposed Cu may therefore be calculated by static methods, by measuring the fraction of N2 in the final gas mixture,145,146 or using a pulse method to determine the consumption of N20,147 or in a flow method (reactive frontal chromatography) where the breakthrough time for the detection of N2 is measured.34 A check on the amount of oxygen deposited may be made by titrating the adsorbed layer with CO and measuring the... 

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