biostudies-literatureUnknown14(53)Yue XNovel Co/NC heterogeneous catalysts were prepared by simply employing self-made Co/Zn-ZIF (zeolitic imidazolate framework) through pyrolysis. The samples were characterized by XRD, XPS, Raman, TEM and BET, and were successfully applied in a cyclopropanation reaction with a yield of 85%. Furthermore, this one-pot synthesized catalyst could be recycled several times without apparent deactivation. The content of Co-N _<i>x</i> active sites could be modified by adjusting the Co/Zn molar ratio of the ZIF precursor. The generation of Co-N _<i>x</i> could be attributed to the evaporation of Zn species, which provides rich micropores.RSC advances39740-39746https://www.ebi.ac.uk/biostudies/studies/S-EPMC11651007biostudies-literatureControllable synthesis of Co/NC catalysts with high-density Co-N &lt;sub&gt;&lt;i&gt;x&lt;/i&gt;&lt;/sub&gt; active sites derived from Co/Zn-ZIF for cyclopropanation.PMC11651007Li JLi CLu JSun DMa HDu YYue XWang ZfalseControllable synthesis of Co/NC catalysts with high-density Co-N &lt;sub&gt;&lt;i&gt;x&lt;/i&gt;&lt;/sub&gt; active sites derived from Co/Zn-ZIF for cyclopropanation.Novel Co/NC heterogeneous catalysts were prepared by simply employing self-made Co/Zn-ZIF (zeolitic imidazolate framework) through pyrolysis. The samples were characterized by XRD, XPS, Raman, TEM and BET, and were successfully applied in a cyclopropanation reaction with a yield of 85%. Furthermore, this one-pot synthesized catalyst could be recycled several times without apparent deactivation. The content of Co-N _<i>x</i> active sites could be modified by adjusting the Co/Zn molar ratio of the ZIF precursor. The generation of Co-N _<i>x</i> could be attributed to the evaporation of Zn species, which provides rich micropores.2024-01-01T00:00:00Z2024 Dec2025-04-22T10:45:23.734Z2025-04-05T23:41:24.276ZS-EPMC116510073969123010.1039/d4ra01816h