The novel amino-incorporated benzene-bridging organosilica nanotubes (AM-NT) were used to efficiently catalyze the cycloaddition of CO₂ to epoxides, producing cyclic carbonates under mild conditions. The highest activity was achieved on AM_0.4-NT nanotubes with a pore diameter of ∼7 nm and a length of ∼60 nm in presence of tetrabutylammonium iodide (TBAI). The remarkably enhanced catalytic performance could be ascribed to the cooperative effect of the silanols as acid sites and the amino groups as basic sites, facilely generated in the channel, as well as the transport of substrates and products facilitated by the nanotubes with large pore diameters and short lengths as well as hydrophobicity. Moreover, the catalyst exhibited effective catalytic activity for a broad range of epoxides with a reasonable reusability.

新型的氨基结合苯桥有机硅纳米管（AM-NT）用于有效催化CO ₂与环氧化物的环加成反应，在温和条件下产生环状碳酸酯。在AM _0.4时达到最高活性-在存在四丁基碘化铵（TBAI）的情况下，孔径为〜7 nm，长度为〜60 nm的-NT纳米管。在通道中容易产生的硅烷醇作为酸性位点和氨基作为碱性位点的协同作用归因于催化性能的显着提高，以及大孔径纳米管和纳米管促进的底物和产物的运输。短的长度以及疏水性。此外，该催化剂对宽范围的环氧化物表现出有效的催化活性，并具有合理的可重复使用性。