Department of Inorganic Chemistry and Catalysis, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht (The Netherlands).
ChemSusChem. 2013 Sep;6(9):1668-72. doi: 10.1002/cssc.201300372. Epub 2013 Jul 31.
Carbon nanofibers (CNFs) were functionalized with aryl sulfonic acid groups using in situ diazonium coupling. The use of diazonium coupling yielded an acidic carbon material, in which the introduced acidic groups are readily accessible to the triglyceride substrate. The material is an efficient catalyst for the transesterification of triolein and methanol, outperforming conventional sulfonated carbons in both stability and activity per acid site. Upon comparing CNFs with varying degrees of functionalization, a linear correlation between sulfonic acid sites and catalytic performance was found.
采用原位重氮偶联法将芳基磺酸基团功能化到碳纳米纤维（CNFs）上。重氮偶联法的使用产生了一种酸性碳材料，其中引入的酸性基团很容易与三油酯底物接触。该材料是三油酸甘油酯和甲醇酯交换的高效催化剂，在稳定性和每个酸位的活性方面均优于传统的磺化碳。通过比较具有不同功能化程度的 CNFs，发现磺酸基位点与催化性能之间存在线性关系。
