Highly efficient synthesis of high-density aviation fuel over dual-site promoted GaZnZrOx/Znβ catalysts from CO2 hydrogenation coupled with naphthalene alkylation
Highly efficient synthesis of high-density aviation fuel over dual-site promoted GaZnZrOx/Znβ catalysts from CO2 hydrogenation coupled with naphthalene alkylation
研究概述
以GaZnZrOx/Znβ双功能催化剂耦合CO2加氢与萘烷基化，制备高密度燃料前体。Ga促进氢活化和氧空位形成，Znβ调节酸性；烷基萘选择性92.3%，633 K下稳定运行120小时，所得燃料密度0.945 g/cm³。碳源同时包含CO2与萘。
谱图与表征信息
Fig. 4. Py-IR spectra of β and Znβ zeolites collected at (a) 473 K and (b) 623 K. (c) 27Al NMR spectra of parent β and Znβ zeolites. X-ray absorption spectra of various samples: (d) Zn K-edge XANES, (e) k2-weighted Fourier transforms (FT) of Zn K-edge EXAFS. Wavelet transformed (WT) of Zn K-edge EXAFS: (f) Zn foil, (g) 1Znβ, (h) 3Znβ, (i) 5Znβ and (j) ZnO samples. (k) Function model between coupling performances and oxygen vacancy concentration in GaZZOx solid solutions. (l) Function model between coupling performances and Bs:Ls ratio in Znβ zeolites.