Abstract Integration of aqueous-phase reforming of methanol (APRM) into the production of value-added fatty alcohols via hydrogenation of fatty acids is an attractive and efficient process in biomass conversion. Herein, we present tannin-derived carbon-supported monometallic Cu/C, Co/C and bimetallic Cu-Co/C catalysts with different Cu/Co ratios for in situ hydrogenation of lauric acid in a methanol-water hydrothermal system. The catalysts were made by a simple mixture of tannin and the metal salts, followed by pyrolysis in an H2 atmosphere. Through synergism induced by Cu-Co interactions, the bimetallic Cu-Co/C catalyst with Cu/Co ratio of 1:4 (CuCo4/C) exhibits higher catalytic activity than monometallic Cu/C catalyst towards lauric acid conversion, as well as higher selectivity to lauryl alcohol than monometallic Co/C catalyst. The CuCo4/C catalyst is composed of metallic Cu, metallic Co, and amorphous carbon, characterized by high surface area (194.5 m2/g) and hierarchical structure. The obtained lauryl alcohol yield in the methanol-water hydrothermal system is significantly higher than other alcohol-water systems, namely ethanol, 1-propanol, and isopropanol hydrothermal systems, highlighting its higher generation rate of hydrogen. Also, the effects of process parameters including the quantity of methanol, catalyst loading and reaction time on the conversion of lauric acid were systematically studied and optimized.

中文翻译：

---

单宁衍生的双金属 CuCo/C 催化剂在甲醇-水介质中有效原位加氢月桂酸

摘要 将甲醇水相重整 (APRM) 整合到通过脂肪酸氢化生产增值脂肪醇是生物质转化中一种有吸引力且有效的过程。在此，我们提出了单宁衍生的碳负载单金属 Cu/C、Co/C 和具有不同 Cu/Co 比的双金属 Cu-Co/C 催化剂，用于在甲醇-水水热系统中原位加氢月桂酸。催化剂由单宁和金属盐的简单混合物制成，然后在 H2 气氛中热解。通过由 Cu-Co 相互作用诱导的协同作用，Cu/Co 比为 1:4 (CuCo4/C) 的双金属 Cu-Co/C 催化剂对月桂酸转化表现出比单金属 Cu/C 催化剂更高的催化活性，以及​​更高的催化活性。对月桂醇的选择性高于单金属 Co/C 催化剂。CuCo4/C催化剂由金属Cu、金属Co和无定形碳组成，具有高表面积（194.5 m2/g）和分级结构的特点。在甲醇-水水热体系中得到的月桂醇收率明显高于其他醇-水体系，即乙醇、1-丙醇和异丙醇水热体系，突出其更高的产氢率。同时，系统研究并优化了甲醇用量、催化剂负载量和反应时间等工艺参数对月桂酸转化率的影响。在甲醇-水水热体系中得到的月桂醇收率明显高于其他醇-水体系，即乙醇、1-丙醇和异丙醇水热体系，突出其更高的产氢率。同时，系统研究并优化了甲醇用量、催化剂负载量和反应时间等工艺参数对月桂酸转化率的影响。在甲醇-水水热体系中得到的月桂醇收率明显高于其他醇-水体系，即乙醇、1-丙醇和异丙醇水热体系，突出其更高的产氢率。同时，系统研究并优化了甲醇用量、催化剂负载量和反应时间等工艺参数对月桂酸转化率的影响。