Au nanoparticles confined within the mesopores of the modified SBA-15 were obtained through adsorption-reduction method and firstly employed as chemoselective catalyst for quinoline hydrogenation. The effects of Au loadings, calcination temperature as well as structure of support on catalytic performances of Au catalysts were explored. The as-obtained 1.2%Au@SBA-15-500 catalyst exhibited high activity, excellent selectivity towards 1,2,3,4-tetrahydroquinoline and extraordinary sintering-resistant property as high as 800 °C, which is sharp contrast to the 1.3%Au/SiO2-500 catalyst. It also showed good recyclability and versatility for quinoline derivatives. The observed properties were assigned to small-sized Au nanoparticles and mesopores of SBA-15. Our work provides a facile and promising approach to construct metal nanocatalysts with high catalytic performance by the use of mesoporous materials.

中文翻译：

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包含在 SBA-15 中的 Au 纳米颗粒作为一种高效且稳定的催化剂，用于将喹啉氢化成 1,2,3,4-四氢喹啉

通过吸附还原法获得了限制在改性 SBA-15 介孔内的 Au 纳米粒子，并首先用作喹啉加氢的化学选择性催化剂。探讨了金负载量、煅烧温度以及载体结构对金催化剂催化性能的影响。所获得的 1.2% Au@SBA-15-500 催化剂表现出高活性、对 1,2,3,4-四氢喹啉的优异选择性和高达 800°C 的非凡耐烧结性能，与 1.3 %Au/SiO2-500 催化剂。它还显示出喹啉衍生物良好的可回收性和多功能性。观察到的特性归于 SBA-15 的小尺寸 Au 纳米颗粒和中孔。