Cobalt (Co) catalysis has recently attracted significant attention in the field of biomass conversion. However, the fabrication of highly dispersive Co nanoparticles at high metal loading with selective facet exposure to achieve specific selectivity is still questionable. In this work, a nitrogen-doped carbon-supported Co catalyst is fabricated for efficient conversion of fatty acids and esters to liquid alkanes. Nitrogen-doping facilitates a highly uniform dispersion of Co nanoparticles even at a high Co loading of 10 wt% and after recycling for 5 runs. The Co/N-C catalyst affords an unconventional decarbonylation/decarboxylation (DCOx) dominant selectivity probably due to partial reduction of cobalt oxides to α-Co⁰ with only exposure of the (111) facet. Co-existence of Co and N-C leads to strong Lewis acidity and basicity, facilitating the interaction between catalyst and –COOH group, and some important acid-catalyzed step-reactions. The versatility of the Co/N-C catalyst is demonstrated through conversion of various fatty acids and esters.

钴（Co）催化最近在生物质转化领域引起了极大的关注。然而，在高金属负载下具有选择性的小面曝光以实现特定选择性的高分散性Co纳米颗粒的制造仍然是有问题的。在这项工作中，制备了氮掺杂的碳载Co催化剂，以有效地将脂肪酸和酯转化为液态烷烃。氮掺杂即使在10 wt％的高Co负载下并循环使用5次后也有助于Co纳米颗粒的高度均匀分散。钴/ NC催化剂，得到一种非常规的脱羰基化/脱羧（DCOX）显性的选择性可能是由于对部分还原的钴氧化物的α -钴⁰仅暴露（111）小平面。Co和NC的共存会导致较强的Lewis酸度和碱度，从而促进催化剂与–COOH基团之间的相互作用以及一些重要的酸催化的阶跃反应。通过各种脂肪酸和酯的转化证明了Co / NC催化剂的多功能性。