RUDN University and Shahid Beheshti University (SBU) chemist together with colleagues from Iran proposed a catalyst for the simple and inexpensive oxidation of alcohols to aldehydes, which are widely used, for example, to create medicines and plastics. Unlike its analogues, the catalyst does not require harsh reaction conditions and dangerous chemicals, and the oxidizer is ordinary air. The results are published in the Journal of the Taiwan Institute of Chemical Engineers.
Aldehydes are organic substances in which a carbon atom combines with oxygen and hydrogen. This broad class of compounds is used in almost all areas of chemistry. For example, formaldehyde is used to make resins and medicines, while acetaldehyde is used to make acetic acid and plastics. One of the ways to produce aldehydes is the oxidation of alcohols. For this purpose, inorganic oxidizing agents are usually used, but they are toxic and unsafe for the environment.
“使用氧气作为氧化剂非常普遍；但是，需要纯O2作为氧化剂的反应不能满足适当反应的标准标准，因为收购，供应，维护和利用纯O2缸的成本很昂贵。因此，肯定需要使用空气作为一种廉价且无毒的氧化剂的催化剂，从而产生水作为唯一的副产品，”said Ahmad Shaabani, a leading researcher at the Joint Institute for Chemical Research of RUDN and SBU
RUDN University chemist together with colleagues from Iran created a catalyst for the oxidation of alcohols in green conditions. The oxidizer is air oxygen, the reaction itself does not require harsh conditions and dangerous chemicals and gives a high yield of aldehyde. In this case, the catalyst itself can be used several times.
新的催化剂基于具有金属中心和有机配体的金属嗜烷酸烷烷。在这些复合物的中心是一个钴原子，其有机循环片段与之差异。这些复合物通过氨基组附着在另一个复合物分子（支架）上。化学家测试了不同的初始酒精。在4-9小时内，成功氧化了82-98％的试剂，并获得了最终醛的80-95％。在使用四个周期后，催化剂的效率下降，但保持很高 - ；63％。
“ MOF底物中各种类型的催化活性金属邻苯烷的整合策略产生了一种低成本，简单，有效的方法，用于合成异质催化剂。值得注意的是，在反应中没有其他氧化剂的氧化试剂中，空气是一种空气作为氧化试剂，催化剂的APT反应时间，高性能和可回收性而不会失去其活性，这是引入催化剂的其他好处，”said Ahmad Shaabani, a leading researcher at the Joint Institute for Chemical Research of RUDN and SBU.
Source:https://www.rfbr.ru/rffi/eng