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Direct Epoxidation of Propylene over Stabilized Cu + Surface Sites on Titanium‐Modified Cu 2 O
Author(s) -
Yang Xiaofang,
Kattel Shyam,
Xiong Ke,
Mudiyanselage Kumudu,
Rykov Sergei,
Senanayake Sanjaya D.,
Rodriguez José A.,
Liu Ping,
Stacchiola Dario J.,
Chen Jingguang G.
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201504538
Subject(s) - selectivity , propylene oxide , titanium , combustion , materials science , inorganic chemistry , oxide , chemistry , catalysis , chemical engineering , photochemistry , organic chemistry , metallurgy , polymer , ethylene oxide , engineering , copolymer
Direct propylene epoxidation by O 2 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 x mixed oxide the epoxidation selectivity can be tuned. The TiCuO x surface anchors the key surface intermediate, an oxametallacycle, leading to higher selectivity for epoxidation of propylene.