For an organic solvent, mesitylene (Aldrich, 98%), benzyl ether (Aldrich, 98%) and isopropanol (Aldrich, 99%) and 1-methylimidazole (Acros, 99%) were used for IPN hydrogenation.
Given the solvents with a lower boiling point, mesitylene (163[degrees]C) and 2-propanol (82[degrees]C), the MXDA yield decreased with reaction temperature.
Interestingly, with further increased temperatures, the MXDA yield over mesitylene and isopropanol was decreased due to not only amine cleavage but also the formation of bulky molecules by polymerization (see Table 2).
According to the FAA's report, Swift Fuel contains 85 percent mesitylene and 15 percent isopentane, although that ratio may vary.
These materials are cheaper than mesitylene and traded on chemical commodity markets, thus they're more widely available.
To beat the mesitylene price challenge, Swift proposes to make its own from acetone and the core of its research work is to refine that process and--the critical part--to find cheap acetone.