Table 1. Formic Acid Decomposition Post-mortem Particle Size (Obtained from TEM) and Catalyst Loading (Obtained from ICP-OES)^a.

tertiary amine	particle size (TEM) [nm]	catalyst loading [wt %]
triethylamine	4.69 ± 1.84	1.17 ± 0.05
tributylamine	5.78 ± 3.26	1.14 ± 0.03
trihexylamine	5.45 ± 2.22	1.15 ± 0.07
N,N-dimethylbenzylamine	4.50 ± 1.68	1.17 ± 0.02
2-(dimethylamino)ethanol	4.98 ± 1.74	1.09 ± 0.07
methyldiethanolamine	4.41 ± 1.32	1.11 ± 0.05
6-dimethylamino-1-hexanol	4.32 ± 1.10	1.15 ± 0.03
1-(3-dimethylaminophenyl)ethanol	6.95 ± 1.92	1.10 ± 0.09

^aThe reaction time was 4 h at 50 degrees Celsius. The initial particle size was established to be 2.6 ± 0.8 nm, and the loading was 1.21 wt %. For the TEM, at least 50 particles were analyzed for each sample. The average particle size of the fresh catalyst was confirmed by using CO pulse chemisorption (2.63 nm).