Site Isolation and Phase Cooperation: Two Important Concepts in Selective Oxidation Catalysis: A Retrospective
Site Isolation and Phase Cooperation: Two Important Concepts in Selective Oxidation Catalysis: A Retrospective
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DOI：
10.1002/chin.201446266
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发表时间：
2014-11
期刊：
影响因子：
--
通讯作者：
R. Grasselli
中科院分区：
文献类型：
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作者：
R. Grasselli
位隔离和相协同是选择性氧化催化中的两个重要概念，对设计和发现新的催化剂具有重要意义。位点隔离处理催化位点处活性氧的限制，目的是最大限度地形成所需的选择性氧化产物，并最大限度地减少过度氧化为废物（考克斯）[1]。相合作涉及这样的概念，即两个适当选择的互补催化性能的相，当彼此紧密（纳米级）接触时，可以彼此协同合作，以得到比通过两个相中的任一个彼此单独和独立操作所获得的更高的所需选择性氧化产物的产率[2]。当所有的关键催化功能不能结合到单一相中时，这种相的合作是特别重要的。这两个原则，首先由SOHIO研究人员在20世纪50年代末提出和阐述，并作为选择性氧化和氨氧化催化剂的发明和开发的有用指南，其中许多最终成功地商业化。经过这么多年，这些概念仍然非常适用于解释许多催化剂的行为，并且仍然是轻质烃的选择性氧化和氨氧化催化领域和相关领域中的新催化剂设计的有用工具。回顾和更新的网站隔离和相合作的概念，并包括其应用到新的和具有挑战性的催化问题所面临的科学和技术的世界。
Abstract Site isolation and phase cooperation are two important concepts in selective oxidation catalysis and are useful in the design and discovery of new catalysts. Site isolation deals with the limitation of active oxygens at the catalytic site with the aim to maximize the formation of desired selective oxygenated products and to minimize overoxidation to waste products (COx) [1] . Phase cooperation deals with the concept that two properly chosen phases of complimentary catalytic properties, when brought into intimate (nanoscale) contact with each other, can be made to cooperate synergistically with each other to give higher yields of desired selective oxidation products than what can be obtained by either of the two phases operating separately and independently from each other [2] . This cooperation of phases is of particular importance when all of the key catalytic functionalities cannot be incorporated into a single phase. These two principles, were first proposed and articulated by SOHIO researchers in the late 1950s and served as useful guidelines for the invention and development of selective oxidation and ammoxidation catalysts, many of which were ultimately successfully commercialized. After all these years, these concepts are still very much applicable to explain the behavior of many catalysts and remain a useful tool for the design of new catalysts in the area of selective oxidation and ammoxidation catalysis of light hydrocarbons and related fields. A retrospective and update of the site isolation and phase cooperation concepts is presented here, and includes their application to new and challenging catalytic problems facing the scientific and technological world.