Nuclear resonant vibrational spectroscopy on Na-Fe3O4/HZSM-5 which catalyzes the conversion from carbon dioxide to gasoline fuel.

In this letter, the first nuclear resonant vibrational spectroscopy (NRVS) measurement on Na-Fe3O4/HZSM-5 multifunction catalyst for CO2 → gasoline reactions is reported and discussed. A series of model or standard samples were also measured to provide comparisons. The Na-Fe3O4/HZSM-5 at the end of the catalytic reaction is identified via NRVS as a pure form of Fe5C2 without Fe3O4 or Fe(0). In the future, the information regarding to various catalytic intermediates can also be investigated via NRVS either on the extracted samples or with an in-situ measurement on the reaction cells. The advantages of NRVS can provide benefits for these researches.