| Summary: | In this work, a core-shell-like sphere ruthenium catalyst, named as 5%Ru/γ-Al<sub>2</sub>O<sub>3</sub>@ASMA, has been successfully synthesized through impregnating the ruthenium nanoparticles (NPs) on the surface of the amino poly (styrene<i>-co-</i>maleic) polymer (ASMA) encapsulating γ-Al<sub>2</sub>O<sub>3</sub> pellet support. The interaction between the Ru cations and the electro-donating polymer shell rich in hydroxyl and amino groups through the coordination bond would guarantee that the Ru NPs can be highly dispersed and firmly embedded on the surface of the support. In addition, the solid sphere γ-Al<sub>2</sub>O<sub>3</sub> pellet could serve as the core to support the resulted catalysts applied in the flow process in a trickle bed reactor to promote the productivity. The resulted catalyst 5%Ru/γ-Al<sub>2</sub>O<sub>3</sub>@ASMA can be applied efficiently in the glucose hydrogenation and presents a steadfast sorbitol yield of almost 90% both in batch reactor and the trickle bed reactor, indicating the potential feasibility of the core-shell-like catalyst in the efficient production of sorbitol.
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