温控相分离纳米Pd催化α, β-不饱和酮的选择加氢

Thermoregulated phase-separable Pd nanocatalyst for selective hydrogenation of α, β-unsaturated ketones

摘要:

常压氢气条件下在α, β-不饱和酮的选择加氢反应中温控相分离Pd纳米催化剂显示了优异的催化性能。在优化的反应条件下，查尔酮的转化率和C=C双键加氢产物的选择性均>99％。温控相分离Pd纳米催化剂易于与产物分离并可以循环使用7次，转化率和选择性均保持在>99%。转化频率（TOF）可达1470 h-1，高于目前文献中报道的常压氢气条件下过渡金属纳米催化剂催化查尔酮选择加氢反应的最高值。

Abstract:

Thermoregulated phase-separable Pd nanocatalyst exhibited high performance in the selective hydrogenation of α, β-unsaturated ketones at atmospheric hydrogen pressure. Under optimized reaction conditions, the conversion and hydrogenation selectivity of the C=C bond for chalcone were >99%. The catalyst can be easily separated from the product and recycled seven times remaining >99% conversion and selectivity. The turnover frequency (TOF) was up to 1470 h-1, which exceeds the value reported in literatures for the selective hydrogenation of chalcone catalyzed by transition metal nanocatalysts under atmospheric hydrogen pressure.