In the present work, Ni-M/TiO₂ (M = Au, Pt, and Ir) were prepared and their catalytic performances were evaluated for ethanol Guerbet condensation. The characterization and evaluation results showed that the addition of noble metal adjusted the acid–base properties of catalyst and improved its catalytic performance. The number of acid sites of catalyst promoted the conversion of ethanol while the strength of basic sites of catalyst boosted the formation of n-butanol. Ni-Pt/TiO₂ presented the best catalytic performance: n-butanol selectivity of 48.1% was reached at an ethanol conversion of 40.0% at 210 °C and 10 h. Furthermore the catalytic stability of Ni-Pt/TiO₂ was improved significantly; it was used for 3 runs without a significant loss in its catalytic performance.

在本工作中，制备了Ni-M / TiO ₂（M = Au，Pt和Ir），并评估了其对乙醇Guerbet缩合反应的催化性能。表征和评估结果表明，贵金属的添加调节了催化剂的酸碱性质并改善了其催化性能。催化剂酸性位的数量促进了乙醇的转化，而催化剂碱性位的强度促进了正丁醇的形成。Ni-Pt / TiO ₂表现出最佳的催化性能：在210°C和10 h的乙醇转化率为40.0％时，正丁醇选择性达到48.1％。此外，Ni-Pt / TiO ₂的催化稳定性明显改善；连续使用了3次，催化性能没有明显损失。