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Silica-1 (TS-1) was developed nearly 40 years ago and has been successfully used as a catalyst to convert propylene to propylene oxide, an important commodity chemical such as for the production of polyurethanes, etc.
plastic
.
Propylene oxide is an important commodity in the chemical industry and is used in the production of plastics, antifreeze and hydraulic fluids
.
A research team from ETH Zurich, the University of Cologne, the Fritz-Haber-Institute in Berlin and BASF has challenged this assumption
.
Based on 17O solid-state NMR spectroscopy, the researchers showed that a peroxide intermediate is formed with two titanium atoms during oxidation with H2O2
.
"None of the methods we used in this study were ground-breaking new methods, however, many things had to happen at the same time to make this study possible," said Christophe Copéret, corresponding author of the publication.
"Our laboratory has only recently The development of a method to synthesize 17O-rich hydrogen peroxide has been one of the keys to our recent work
.
"We have been working for many years to explain the reaction mechanism of homogeneous titanium catalysts and found that - contrary to assumptions in the literature - hydrogen peroxide is activated by the titanium pair
.
Catalyst development is often a black box that relies on many experiments, large-scale screening and luck
.
