scholarly journals Direct epoxidation of propene on silylated Au–Ti catalysts: a study on silylation procedures and the effect on propane formation

2018 ◽  
Vol 8 (12) ◽  
pp. 3052-3059 ◽  
Author(s):  
S. Kanungo ◽  
K. S. Keshri ◽  
E. J. M. Hensen ◽  
B. Chowdhury ◽  
J. C. Schouten ◽  
...  
Keyword(s):  
Propene Oxide

Silylation was employed on an active Au/Ti–SiO2 catalyst, in order to enhance catalyst performance for the direct epoxidation of propene to propene oxide (PO) using H2 and O2.

In-depth understanding of acid catalysis of solvolysis of propene oxide over titanosilicates and titanosilicate/H2O2 systems

2016 ◽  
Vol 337 ◽  
pp. 248-259 ◽  
Author(s):  
Lizhi Wu ◽  
Shufang Zhao ◽  
Longfei Lin ◽  
Xiangqing Fang ◽  
Yueming Liu ◽  
...  
Keyword(s):  
Acid Catalysis ◽  
Propene Oxide

Efficient epoxidation of propene using molecular catalysts

2014 ◽  
Vol 4 (11) ◽  
pp. 3845-3849 ◽  
Author(s):  
Iulius I. E. Markovits ◽  
Michael H. Anthofer ◽  
Helene Kolding ◽  
Mirza Cokoja ◽  
Alexander Pöthig ◽  
...  
Keyword(s):  
Mild Conditions ◽  
Propene Oxide ◽  
Molybdenum Catalysts ◽  
Molecular Catalysts

The epoxidation of propene to propene oxide at mild conditions using molecular rhenium and molybdenum catalysts is presented.

Synthesis and structure of [Cp2Zr(OPri)(HOPri)]+ and its activity in the polymerisation of propene oxide

2004 ◽  
Vol 689 (24) ◽  
pp. 4624-4629 ◽  
Author(s):  
Elaine Farrow ◽  
Yann Sarazin ◽  
David L. Hughes ◽  
Manfred Bochmann
Keyword(s):  
Propene Oxide

scholarly journals The Production of Propene Oxide:  Catalytic Processes and Recent Developments

2006 ◽  
Vol 45 (10) ◽  
pp. 3447-3459 ◽  
Author(s):  
T. Alexander Nijhuis ◽  
Michiel Makkee ◽  
Jacob A. Moulijn ◽  
Bert M. Weckhuysen
Keyword(s):  
Recent Developments ◽  
Propene Oxide ◽  
Catalytic Processes

Arylation of cyclic ethers by gaseous phenylium ions. Formation and behavior of phenoxenium ions in the gas phase

1988 ◽  
Vol 66 (10) ◽  
pp. 2506-2514 ◽  
Author(s):  
Simonetta Fornarini ◽  
Maurizio Speranza
Keyword(s):  
Oxygen Atom ◽  
Gas Phase ◽  
Pressure Range ◽  
Radical Scavenger ◽  
Cyclic Ethers ◽  
Site Selectivity ◽  
Ionic Intermediates ◽  
Propene Oxide ◽  
The Stability ◽  
And Behavior

Free, unsolvated phenylium ions formed by the spontaneous decay of 1,4-ditritiobenzene have been allowed to react with gaseous cyclic ethers (oxirane, propene oxide, and oxetane) and acetaldehyde in the pressure range 30–250 Torr and in the presence of a thermal radical scavenger (O2, 4 Torr). The effects of a gaseous base (NMe3, 20 Torr) and of an energy moderator (He, 630–720 Torr) were also investigated. Phenylium ion confirms its considerable site selectivity, demonstrated by the distinct preference for the n-type center of the substrate, although appreciable insertion into the carbocyclic structure of propene oxide and oxetane is observed as well. The stability features of the ionic intermediates from addition of phenylium ion to selected substrates have been evaluated as well as their fragmentation and isomerization mechanisms. The behavior of gaseous phenylium ion toward cyclic ethers, in particular its ability to formally abstract an oxygen atom from the ether to give the phenoxenium ion, a reaction first observed in the present study, is discussed and compared with previous mechanistic investigations carried out in the gas phase and in solution.

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