[c] Determined by 1 H RMN of the crude mixture, mesitylene was used as internal standard Finally, to showcase the applicability of the reaction on a larger scale, the decarboxylation of methyl formate was carried out in a 50 mL Parr autoclave (Scheme ). For this experiment, the concentration of methyl formate and the volume of the reaction were increased respectively from 0.24 ᴍ and 0.6 mL at NMR scale to 0.7 ᴍ and 8 mL. After 3 days of reaction, we were pleased to observe an increase in pressure from 1.0 to 5.9 bar, and GC analysis of the gas phase showed that it was composed of a 62/32/6 % mixture of methane, CO2 and H2 (the more soluble CO2 was also detected by NMR, in the liquid mixture, accounting for the lower percentage than methane), corresponding to 91 % yield. In 1 H NMR, only traces of methyl formate remained, together with 7.5 % of methanol. The production of methane reached 132 mL (T = 285 K, P = 4.9 bar) for a 0.36 mL input of methyl formate. This validated that methyl formate could indeed serve as a liquid surrogate containing 27 wt% of methane. It could be used as a means to transport it in a safe manner, and generate methane at high pressure for further use.