Scheelite-type alkali metal perrhenates supported Co-based catalysts for highly efficient ammonia synthesis
Scheelite-type alkali metal perrhenates supported Co-based catalysts for highly efficient ammonia synthesis
研究概述
以含活性Re及碱金属促进组分的高铼酸盐负载Co，分工活化N2和H2并促进氢溢流，缓解单一位点的竞争吸附。Co/KReO4在400℃、1 MPa下合氨速率11.48 mmol/(g·h)，为KReO4的3.2倍。
谱图与表征信息
Fig. 5. Co K-edge XANES (a) and k3-weighted EXAFS (b) spectra of the xCo/KReO4 catalysts, Co foil and CoO references. Wavelet transform (WT) for the Co K-edge EXAFS signal of the15Co/KReO4 (c) and 20Co/KReO4 (d) catalysts.