三(2-吡啶甲基)甲烷为配体的双金属配合物的制备及其催化性能研究

Preparation and Catalytic Performance of a New Bimetallic Complex with a Ligand of Tri(2 methylenepyridine) Methane

报道了一种新型的以三（２－吡啶甲基）甲烷为配体，以铑为主要催化活性中心，并辅以其它金属为辅助催化的双金属配合物．该配合物在相对温和的条件下，可迅速催化甲醇羰基化为醋酸，及醋酸甲酯羰基化为醋酐．实验结果证明，第二种金属的引入提高了配合物的催化活性，这种催化活性的提高因第二种金属的不同而有所差异．另外。

A new bimetallic complex has been prepared. The ligand is tri(2 methylenepyridine) methane with the geometry of a triangular cone, which coordinated with a Rh atom as the main active center. Then the other metal salts were bonded with it in an auxiliary structure. The catalysts improved the carbonylation activity of methanol to acetic acid and of methyl acetate to acetic anhydride. The experimental results show that the new bimetallic complexes have higher catalytic reactivity and selectivity of product than the complex with the single metal of Rh.