西华大学学报（自然科学版）2025，Vol.44Issue(6)：107-118,12.DOI:10.12198/j.issn.1673-159X.5897
还原温度对碳氮载体负载CuCo双金属催化剂催化油脂加氢制脂肪醇性能的影响
Effect of Reduction Temperature on the Performance of CuCo Bimetallic Catalyst Supported on Carbon-nitrogen Carrier for Hydrogenation of Oil to Fatty Alcohol
摘要
Abstract
To address the issue of low yield in the production of fatty alcohols via the hydrodeoxygen-ation(HDO)pathway using single-metal Cu or Co catalysts,this study constructed a carbon-nitrogen-sup-ported CuCo bimetallic catalyst system.The CuCo/CN catalysts were first prepared at reduction temperat-ures of 0,150,200,300℃,respectively.Subsequently,stearic acid was used as a model substrate to evalu-ate the catalytic performance under reaction conditions of 220℃and 3.0 MPa H2 for 6 h.The results demonstrate that the CuCo/CN-200 catalyst,reduced at 200℃,exhibited the highest stearic acid conver-sion(85.1%),octadecanol yield(79.1%),and space-time yield(0.46 mmolalcohol∙gcat-1∙h-1).XRD analysis re-vealed that the CuCo/CN-200 catalyst possessed smaller crystallite sizes,thereby exposing more active sites.XPS results indicate that electron transfer between Cu and Co enhanced the hydrogenation capability of the C=O bond.FT-IR spectroscopy confirmed that the CuCo/CN-200 catalyst exhibited stronger adsorp-tion of carboxyl groups.When applied to the hydrogenation of natural oils,the CuCo/CN-200 catalyst maintained a stable fatty alcohol yield of approximately 70%,demonstrating excellent substrate adaptabil-ity.After five reuse cycles,the octadecanol yield decreased by only 13.6%,highlighting its superior catalyt-ic stability.This study provides theoretical insights and optimization strategies for the design of highly effi-cient non-noble metal catalysts.关键词
天然油脂/CuCo/CN催化剂/硬脂酸/脂肪醇Key words
natural oils/CuCo/CN catalyst/stearic acid/fatty alcohol分类
化学化工引用本文复制引用
杨迎春,肖尧,王云烨,未小莉,罗晓晓,廖雪梅..还原温度对碳氮载体负载CuCo双金属催化剂催化油脂加氢制脂肪醇性能的影响[J].西华大学学报（自然科学版）,2025,44(6):107-118,12.基金项目
国家自然科学青年基金项目(21706216). （21706216）
