Nontraditional Catalyst Supports in Surface Organometallic Chemistry
Nontraditional Catalyst Supports in Surface Organometallic Chemistry
复制标题
表面金属有机化学中的非传统催化剂载体
DOI：
10.1021/acscatal.0c03350
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发表时间：
2020-09
期刊：
影响因子：
12.9
通讯作者：
Ryan J. Witzke;Alon Chapovetsky;M. Conley;David M. Kaphan;M. Delferro
中科院分区：
文献类型：
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作者：
Ryan J. Witzke;Alon Chapovetsky;M. Conley;David M. Kaphan;M. Delferro
表面有机金属化学（SOMC）作为一个领域的目的是混合的积极属性均相和多相催化。多年来，通过主要负载在二氧化硅和氧化铝上的定义明确的表面有机金属催化剂的合成、表征和应用，已经获得了对非均相体系的重要见解。相当多的研究工作集中在应用均相方法来合成和表征这些系统。均相催化由于其电子和空间调节配体以产生所需的反应性和选择性的能力而蓬勃发展。然而，在SOMC的努力，最近才转向利用潜在的无机载体材料的立体电子多样性以外的二氧化硅和氧化铝，以施加类似的控制的有机金属活性位点的反应性。载体材料与非均相有机金属体系的电子结构和反应性内在地联系在一起，其方式与配体对均相催化剂体系施加控制的方式相同。通过改变载体来调节非均相催化剂的反应性的能力是非常有价值的，并且预计这将代表该领域中显著增长的领域。在此基础上，对硫酸化金属氧化物、改性二氧化硅、氧化还原活性载体等非传统催化剂载体的应用和前景进行了讨论。
Surface organometallic chemistry (SOMC) as a field aims to blend the positive attributes of homogeneous and heterogeneous catalysis. Significant insight into heterogeneous systems has been gained over the years through the synthesis, characterization, and application of well-defined surface organometallic catalysts, predominantly supported on silica and alumina. Considerable research efforts have focused on the application of homogeneous methods to the synthesis and characterization of these systems. Homogeneous catalysis has thrived on its ability to electronically and sterically tune ligands to yield desired reactivity and selectivity. Efforts in SOMC, however, have only recently turned to harnessing the stereoelectronic diversity of potential inorganic support materials beyond silica and alumina in order to exert similar control on the reactivity of the organometallic active site. The support material is intrinsically linked to electronic structure and reactivity of heterogeneous organometallic systems in the same way that ligands exert control over homogeneous catalyst systems. The ability to tune the reactivity of heterogeneous catalysts by changing the support is of great value, and it is anticipated that this will represent an area of significant growth in the field. In this perspective, the use and future of non-traditional catalyst supports, such as sulfated metal oxides, modified silicas, and redox active supports is dis-cussed.