Direct Epoxidation of Propylene over Stabilized Cu+ Surface Sites on Titanium‐Modified Cu2O. (17th July 2015)

• Record Type: Journal Article
• Authors: Yang, Xiaofang; Kattel, Shyam; Xiong, Ke; Mudiyanselage, Kumudu; Rykov, Sergei; Senanayake, Sanjaya D.; Rodriguez, José A.; Liu, Ping; Stacchiola, Dario J.; Chen, Jingguang G.
• Is Part Of: Angewandte Chemie. Volume 127:Number 41(2015)
• Page Start: 12114
• Page End: 12119
• Publication Date: 2015-07-17
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201504538
• Languages: English
• ISSNs: 0044-8249

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Direct propylene epoxidation by O₂ is a challenging reaction because of the strong tendency for complete combustion. Results from the current study demonstrate that by generating highly dispersed and stabilized Cu⁺ active sites in a TiCuO_{<italic>x</italic>} mixed oxide the epoxidation selectivity can be tuned. The TiCuO_{<italic>x</italic>} surface anchors the key surface intermediate, an oxametallacycle, leading to higher selectivity for epoxidation of propylene.</p> </abstract>