【摘要】 采用TPD法研究了H₂在Cu/ZnO/A1₂O₃上的脱附动力学,结果表明在350℃以内,Cu/ZnO/A1₂O₃对H₂显示出具有不同能量特征的两个活泼部位（Ⅰ）、（Ⅱ）,借助于脱附速率等温线法对（Ⅰ）、（Ⅱ）进行解析,建立了相应的脱附速率方程,并发现Cu/ZnO/A1₂O₃对H₂的有效表面为非理想表面,（Ⅰ）、（Ⅱ）对有效表面积的贡献分别为27.6％及72.4％。更多还原

【Abstract】 The desorption kinetics of H2 from the Cu/ZnO/Al2O3 catalyst of the low temperature shift reaction has been studied by TPD. It is represented that, for H2, Cu/ZnO/Al2O3 has two active sites ( Ⅰ ) and ( Ⅱ ) which have distinct characteristics of energy as the temperature <350℃. The detailed analysis for (Ⅰ) and (Ⅱ) with the desorption rate isotherms method gave the desortion kinetic parameters and determined the desorption rate equations. It was discovered that the effective surface of Cu/ZnO/Al2O3 catalyst is not an ideal surface and the contribution for effective surface area is 27.6% for ( Ⅰ ) and 72.4% for (Ⅱ).更多还原