论文部分内容阅读
A heterogeneous catalyst, which possesses high activity, selectivity, stability and regenerability, is interesting.Here we represent several examples for understanding the improvement of catalytic performance of metal and metal oxides by mesostructure in water mediated organic reactions for example, coupling reactions.Ordered mesoporous silica is firstly used as a carrier to support palladium.But metal particles aggregate together due to the hydrophilic pore wall.