Nuclear resonant vibrational spectroscopy on Na–Fe 3 O 4 /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.