[1Fp01-09] Surface Science(SS2) Chemical Property

[1Fp05] Reaction properties of formate hydrogenation on Zn/Cu(111) model catalysts

*Tetta Takeuchi¹, Koyo Tsuda¹, Takahiro Kondo³, Junji Nakamura², Kotaro Takeyasu³ (1. Graduate School of Science and Technology, University of Tsukuba, 2. International Institute for Carbon-Neutral Energy Research (I2CNER), Kyushu University, 3. Faculty of Pure and Applied Sciences / TREMS / Zero-EFM, University of Tsukuba)

Global warming is having a major impact on ecosystems by abnormal weather and causing a rise in sea level. Carbon neutrality, which is reducing CO2 emission to zero in the real term, is focused on as solution of global warming. Methanol synthesis of CO2 hydrogenation used CuZnO-based catalyst has been studied for 20 years, but some points are not agreement among researchers because experimentally observation of reaction intermediates is difficult for these are thermally unstable. This research object is to clear reaction properties of hydrogenation of formate on Zn/Cu(111) model catalyst. For this object, we performed temperature programmed desorption experiment on Zn/Cu(111) model catalyst. As a result, a new peak was identified at a higher temperature than the known Cu(111)-derived peak. This means that the reaction intermediate, formate, was stabilized by Zn. The role of Zn in CuZnO-based catalysts was discussed by comparing the results with an energy diagram of methanol synthesis of CO2 hydrogenation obtained on Cu(111) model catalysts.