4′-bipyrazolate, X = H, NH2, NO2) constructed with ligands having different functional groups on the same skeleton have been employed as heterogeneous catalysts for aerobic liquid-phase oxidation of cumene with O2 as oxidant. O2 adsorption isotherms collected at pO2 = 1 atm and T = 195 and 273 K have cast light on the relative affinity of these catalysts for dioxygen. The highest gas uptake at 195 K is
三种具有通式Co(B
PZX)(B
PZX 2– = 3-X-4,4'-联
吡唑酸酯,X = H,NH 2,NO 2)的
金属有机骨架,由在同一骨架上具有不同官能团的
配体构成已使用O 2作为氧化剂,将其用作
异丙苯的好氧液相氧化的非均相催化剂。在p O2 = 1 atm且T = 195和273 K时收集的O 2吸附等温线对这些催化剂对双氧的相对亲和力产生了影响。发现Co(B
PZ)(3.2 mmol / g(10.1 wt%O 2)),其最高的BET比表面积(926 m 2 / g)与Co(B
PZNH 2)(317 m 2 / g)和Co(B
PZNO 2)(645 m 2 / g)相比。吸附的O 2等排热(Q st)趋势遵循Co(B
PZ) > Co(B
PZNH 2) > Co(B
PZNO 2)的顺序。有趣的是,发现
枯烯氧化产物的选择性取决于催化剂连接基中存在的标签:而
氢过氧化枯烯(CHP)是用Co(B