脱水
硼
催化作用
原位
布朗斯特德-洛瑞酸碱理论
磷酸盐
化学
化学工程
有机化学
生物化学
工程类
作者
Chenxin Su,Shuiqin Zhou,Su Ying Wu,Mingbin Gao,Weiling Zhang,Zhiyi Ma,Liang Yan,Fuweng Zhang,Jingjing Chen,Hao‐Hong Li,Jie Liu,Huidong Zheng
标识
DOI:10.1016/j.cej.2024.149273
摘要
Dehydroxylation of biomass-based platform molecules is critical for obtaining building blocks for use in the chemical industry. Acid catalytic dehydration has provided a feasible route. However, simultaneously pursuing high product-selective and ultra-stable catalysts for the dehydroxylation of polyols remains an open challenge. In this study, a strategy for in-situ Brønsted acid sites (BAS) with chemo-adsorption selectivity is proposed. The construction of defect sites B[3] and P[4] species has been proved to be a prerequisite for the dynamic acid site formation at hydrothermal conditions. The BPO4 catalyst with in-situ BAS can achieve the high selectivity of acrolein (∼80%) and robust stability of catalyst (over 425 h) using glycerol dehydration as a model reaction. In addition, in-situ BAS is highly selective for secondary hydroxyl groups and has been extended to other substrate applications. This catalytic strategy provides a green, efficient, and economical approach for converting biomass-derived polyols to high-value-added chemicals.
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