The catalytic activity of scrap ceramic-cores of automotive catalytic converters (SCATs) was investigated in the continuous-flow hydrogenation of different biomass-derived chemicals. The waste SCAT powders were deeply characterized by ICP-MS, TGA, MP-AES, XRD, N₂ physisorption, TPR, HRTEM and EDS before and after utilization as a catalyst. The hydrogenation reactions of isopulegol to menthol, cinnamyl alcohol to hydrocinnamyl alcohol, isoeugenol to dihydroeugenol, vanillin to vanillyl alcohol and benzaldehyde to benzyl alcohol were performed studying the influence of various reaction parameters (temperature, pressure, flow rate and concentration of the starting material) on the final yields. The outstanding performance and stability obtained for the low metal content of waste-derived catalysts can be attributed to the co-presence of different noble metals as well as to the composite structure itself.

中文翻译：

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废汽车废料转换器，作为生物质衍生化学品连续流加氢的有效催化剂

在不同生物质衍生的化学品的连续流加氢中，研究了汽车催化转化器（SCAT）的废陶瓷芯的催化活性。通过ICP-MS，TGA，MP-AES，XRD，N ₂对SCAT废粉进行了深入表征用作催化剂之前和之后的物理吸附，TPR，HRTEM和EDS。研究了各种反应参数（温度，压力，流速和原料浓度）的影响，进行了异薄荷醇与薄荷醇，肉桂醇与氢肉桂醇，异丁香酚与二氢丁香酚，香兰素与香兰醇和苯甲醛与苯甲醇的氢化反应。关于最终收益。废催化剂中低金属含量获得的出色性能和稳定性可归因于不同贵金属的共存以及复合结构本身。