By using selenium-directing technology, magnetic mesoporous silica-supported nano palladium catalyst (Pd/SiO₂/Fe₃O₄-Se) for oxidative alkene cracking reactions could be synthesized in a relatively concise method. During the materials calcination process, decomposition and sublimation of selenium moieties of selenized Fe₃O₄ core could direct the formation of the micro-structures of nano materials more orderly, endowing the material overwhelmingly higher catalytic activity than the similar material prepared from unselenized Fe₃O₄. As the first report of synthesizing magnetic materials via the selenium-directing method, this work is of both science and application meanings and may inspire new ideas for the development of related novel materials.

通过使用硒引导技术，可以用相对简洁的方法合成磁性介孔二氧化硅负载的纳米钯催化剂（Pd / SiO ₂ / Fe ₃ O ₄ -Se），用于氧化烯烃的裂解反应。在材料煅烧过程中，硒化Fe ₃ O ₄核的硒部分的分解和升华可以更直接地指导纳米材料的微观结构的形成，与未硒化Fe ₃制备的相似材料相比，该材料具有更高的催化活性。Ø ₄。作为通过硒定向法合成磁性材料的第一篇报道，这项工作具有科学和应用意义，并可能为相关新型材料的开发启发新的思路。