Chloride-Engineered CO Selectivity Promotion in Integrated Carbon Capture and Hydrogenation
Chloride-Engineered CO Selectivity Promotion in Integrated Carbon Capture and Hydrogenation
研究概述
在Ni–Ca双功能材料中引入微量Cl，形成Ca—Cl物种、致密化CaO并降低邻近Ni位点可还原性，使碳捕集耦合加氢由甲烷化转向逆水煤气变换。1% Cl改性样品600 ℃下CO选择性91.6%，无Cl对照仅20.5%；原位研究显示甲酸盐深度氢化被抑制。
谱图与表征信息
Figure 2. Characterizations of Ni active sites. (a) TEM with metal particle size distribution of Cl-0 DFMs, (b) TEM-EDX with metal particle size distribution of Cl-1 DFM, (c) H2-TPR of calcined DFMs, (d) vacuum CO-probe FTIR spectra, (e) Ni K-edge EXAFS spectra, and (f) Ni 2p XPS spectra.