Ti掺杂SBA-15负载Ni基催化剂用于木质素衍生物定向加氢脱氧转化

Ni supported on Ti-doped SBA-15 catalyst for the selective hydrodeoxygenation conversion of lignin derivatives

本研究通过在SBA-15分子筛骨架内掺杂Ti物种并负载Ni纳米颗粒合成了“金属-酸”双功能催化剂(Ni/Ti-SBA-15)。Ti的掺杂不仅提高了催化剂酸性位点的数量,还促进了Ni纳米颗粒在载体上的高度分散。在绿色、温和条件下实现了香兰素到2-甲氧基-4-甲基苯酚(MMP)高效转化,目标产物选择性高达96.46%。此外,Ni/Ti-SBA-15催化剂价格低廉,制备工艺简单,这项工作为制备廉价高效催化剂提供了新的思路,有利于实现生物质衍生物的绿色、低成本升级转化。

The development of cost-effective and efficient catalysts plays a critical role in the selective hydrodeoxygenation of lignin derivatives for lignin valorization.Herein,we reported“metal-acid”bifunctional catalysts(Ni/Ti-SBA-15)consist of Ni nanoparticles highly dispersed on Ti doped SBA-15,which achieved 100% vanillin conversion and 96.46% selectivity of 2-methoxy-4-methylphenol(MMP)under mild conditions.Characterizations were employed to reveal the morphology and physicochemical properties of the catalysts.The results indicated that doping of Ti species not only increased the number of acidic sites but also promoted the high dispersion of Ni nanoparticles on the support.This research provides a novel concept for the synthesis of costeffective and efficient catalysts,which contributes to the environmentally friendly and economical conversion of biomass derivatives.