A sulfur-tolerant Pd/CeO_2 catalyst for methanol synthesis from syngas

The catalytic activity of ceria-supported Pd for selective hydrogenation of CO is well preserved in the presence of 30 ppm H2S due to the parallel oxidation of sulfur by CeO2 under standard methanol synthesis conditions. The bifunctional nature of this catalyst opens a route for the conversion of sulfur-contaminated gas streams such as the integrated gasification combined cycle syngas or biogas into liquid fuels if desulfurization by conventional means is not practical.

Co-Mo系耐硫变换催化剂的红外光谱表征研究

采用双探针 (CO ,CO +NO)原位红外光谱方法对单组分Co ,Mo及双组分Co -Mo系耐硫变换催化剂进行研究 ,结果表明 :在载体Al2 O3 上 ,活性组分Co、Mo与载体之间的相互作用较强 ,而在载体Al2 O3-MgO上 ,活性组分Co、Mo与载体之间的相互作用适中 ,且活性组分Co、Mo之间存在协调作用 ,提高了催化剂的变换活性。