Surface chemistry of hydroxyapatite for sustainable n-butanol production from bio-ethanol
Surface chemistry of hydroxyapatite for sustainable n-butanol production from bio-ethanol
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DOI：
10.1016/j.checat.2021.06.005
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发表时间：
2021-07
期刊：
影响因子：
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通讯作者：
Daniyal Kiani;J. Baltrusaitis
中科院分区：
文献类型：
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作者：
Daniyal Kiani;J. Baltrusaitis
羟基磷灰石（HAp）是一种绿色双功能催化剂，可用于各种生物质衍生分子的非均相偶联反应，包括乙醇-丁醇的Guerbet反应。这篇评论批判性地分析了HAp催化剂的表面化学的基础上提供的时间和空间resolvedin situandoperandoscopic研究。具体而言，分离的酸性和碱性表面位点的性质，以及酸碱对，阐明基于化学探针光谱结果。表面结构-反应性的关系也合理化的基础上的性质和身份的表面位点参与的各个步骤的格尔伯特反应，以生产丁醇的HAp催化剂。最后，在实验研究的未来方向提出了建议，以指导合理设计的改进HAP基催化剂的格尔伯特反应和其他类似的化学。
Calcium hydroxyapatite (HAp) has emerged as a green, bifunctional catalyst for the heterogeneous coupling of various biomass-derived molecules, including ethanol ton-butanol via the Guerbet reaction. This review critically analyzes the surface chemistry of HAp catalysts based on the available temporally- and spatially-resolvedin situandoperandospectroscopic studies. Specifically, the nature of the isolated acidic and basic surface sites, as well as the acid-base pairs, is elucidated based on chemical probe spectroscopy results. Surface structure-reactivity relationships are also rationalized based on the nature and identity of the surface sites involved in various steps of the Guerbet reaction to producen-butanol over the HAp catalysts. Finally, future directions in experimental investigations are suggested to guide the rational design of improved HAp-based catalysts for the Guerbet reaction and other similar chemistries.