因分级多孔SiO2催化剂的催化活性与其形貌及孔结构密切相关，故可通过其形貌及孔结构的调控突破催化氧化苧烯烯丙位合成香芹酮催化剂选择性极低的问题。本项目拟在前期研究中发现生物模板合成高选择性催化氧化催化剂的优势及特点的基础上，利用分布广泛且无法有效控制、危害极大的恶性杂草- - 紫茎泽兰的茎、叶、花、果及种子等组织器官天然的多层次、多维、多组分的分级结构为模板，辅以"自掺杂"或主动掺杂等手段，制备多种不同形貌、孔结构及性质的SiO2 等材料。通过探索多级精细结构模板及其制备的催化剂形貌、孔结构等特征与催化氧化苧烯性能的关联和反应机理，揭示分级多孔材料高选择性催化氧化反应的本质，实现最大程度地提高催化氧化苧烯合成香芹酮的选择性及收率。苧烯是众多单萜烯之一，其高选择性催化氧化的成功可推广至其它单萜烯如蒎烯。本项目也将为紫茎泽兰变废为宝和云南天然产物深度转化为高附加值产品提供新思路和新工艺。

Hierarchically porous oxides have received considerable interest as a potential catalytic support or photocatalytic materials. Limonene is one of the molecules of choice to study chemo- and regioselective catalytic oxidations. Most of the known solid catalysts yield significantly low limonene conversions and epoxide selectivities (～30%). In this project, doped or self-doped hierarchically porous silica or alumina will be synthesized by using wild Eupatorium adenophorum as templates and used for the oxidation of limonen. The synthesized hierarchically porous samples will exhibit similar morphologies to those of the original templates. The strategies combine sol-gel chemistry and biotemplates that tune the catalysts' architecture, texture and particularly function, selective oxidation of limonene to carvone. A catalyst exhibiting high substrate conversion and good product (carvone) selectivity is expected to obtained.