Results 21 to 30 of about 65,683 (195)

Post‐Synthetic Zinc Modifications to Correct Speciation in Ti‐MWW Zeolites for Catalytic Oxidation

Angewandte Chemie, EarlyView.
Post‐synthetic Zn modifications of Ti‐MWW zeolite catalysts exhibit improved catalytic properties in the selective oxidation reaction, namely the ammoximation reaction. The origin of the beneficial effect of Zn is related via an array of spectroscopic and microscopic techniques to the modification of extra‐framework TiO2 and TiOx clusters and the ...
Christoph J. Kaul, Lukas Lätsch, Alexander V. Yakimov, Milivoj Plodinec, Xing Huang, Trees De Baerdemaeker, Jaroslaw Mormul, Peter Oechsle, Andrei‐Nicolae Parvulescu, J. Henrique Teles, Christophe Copéret   +10 more
wiley   +2 more sources

Ab initio studies of propene epoxidation on oxidized silver surfaces [PDF]

Phys. Chem. Chem. Phys., 2014
Pathways for propene oxide, acrolein and propanone formation on oxidized silver surfaces are studied using DFT simulations.
Molina Martín, Luis Miguel, López Santodomingo, María José, Alonso Martín, Julio Alfonso   +2 more
openaire   +2 more sources

Enhanced stability for propene epoxidation with H2 and O2 over wormhole-like hierarchical TS-1 supported Au nanocatalyst

, 2019
Designing highly efficient Au/Ti-containing catalysts for propene epoxidation with H2 and O2 harbors tremendous scientific and industrial importance. In this work, novel hydrophobic hierarchical TS-1 (HTS-1) with wormhole-like mesopores (ca.
Nan Sheng, Zhi-Kun Liu, Zhaoning Song, D. Lin, Xiang Feng, Yibin Liu, Xiaobo Chen, De Chen, Xinggui Zhou, Chao-He Yang   +9 more
semanticscholar   +1 more source

Mechanistic Study into the Direct Epoxidation of Propene over Gold/Titania Catalysts [PDF]

The Journal of Physical Chemistry B, 2005
The epoxidation of propene over gold/titania based catalysts was investigated using different techniques. Infrared spectroscopic information showed that one key step in the reaction mechanism is a reaction catalyzed by gold between titania surface groups and propene. In this reaction step, a bidentate propoxy species is formed on titania.
Nijhuis, T.A., Visser, T., Weckhuysen, B.M.   +2 more
openaire   +4 more sources

Gas-Phase Epoxidation of Propene with Hydrogen Peroxide Vapor

Industrial & Engineering Chemistry Research, 2013
A study on the gas-phase epoxidation of propene with vapor hydrogen peroxide has been carried out. The main purpose was to understand the key factors in the reaction and the relationship between epoxidation of propene and decomposition of hydrogen peroxide, which is the main side reaction.
Perez Ferrandez, D.M., Croon, de, M.H.J.M., Schouten, J.C., Nijhuis, T.A.   +3 more
openaire   +1 more source

Interface‐Enhanced Electrochemical Epoxidation Over a Core‐Shell Nanozeolite TS‐1@Mn‐N‐C Catalyst

Advanced Science, EarlyView.
Core–shell interface of TS‐1@Mn‐N‐C enables in situ generation of high‐concentration H2O2 and its spatially confined activation toward epoxidation‐active η‐Ti‐OOH species, leading to highly efficient and continuous electrochemical epoxidation. The work successfully addresses the key challenge of inefficient mass transfer and slow kinetics caused by ...
Wenbiao Zhang, Guanqiao Zhang, Wanling Zhang, Kun Yu, Di Pan, Zhuxin Gui, Yi Tang, Qingsheng Gao   +7 more
wiley   +1 more source

Cost-efficient core-shell TS-1/silicalite-1 supported Au catalysts: Towards enhanced stability for propene epoxidation with H2 and O2

, 2019
Designing cost-effective TS-1 with enhanced catalytic stability in direct propene epoxidation with H2 and O2 is attracting tremendous research interests.
Zhaoning Song, Xiang Feng, Nan Sheng, D. Lin, Yi-Chuan Li, Yibin Liu, Xiaobo Chen, De Chen, Xinggui Zhou, Chao-He Yang   +9 more
semanticscholar   +1 more source

Manipulating Gold Spatial Location on Titanium Silicalite-1 To Enhance the Catalytic Performance for Direct Propene Epoxidation with H2 and O2

ACS Catalysis, 2018
Engineering Au spatial locations on support harbors tremendous potential to boost catalytic performance but still remains a scientific and technological challenge.
Xiang Feng, Zhaoning Song, Yibin Liu, Xiaobo Chen, Xin Jin, Wenjuan Yan, Chao-He Yang, Jun Luo, Xinggui Zhou, De Chen   +9 more
semanticscholar   +1 more source

Learning Strategies from Nature's Blueprint to Cyclic Carbonate Synthesis

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
The development of sustainable synthetic methods for cyclic carbonates draws inspiration from nature, focusing on eco‐friendly processes and renewable resources like CO2 and biomass. This review explore various CO2 activation mechanisms, green chemistry principles, and green catalysts.
Erika Saccullo, Vincenzo Patamia, Chiara Zagni, Antonio Rescifina, Giuseppe Floresta   +4 more
wiley   +1 more source

Alkoxyallenes in Modern Synthesis: Reactivity, Catalysis, and Complexity Generation

Advanced Synthesis &Catalysis, Volume 368, Issue 17, 1 September 2026.
The last decade has witnessed a remarkable transformation in alkoxyallene chemistry. Although historically employed as synthetic equivalents of acrolein or as versatile 3C synthons, alkoxyallenes are now increasingly recognized as highly adaptable platforms for synthetic design.
A. Lanfranco, M. Rusconi, J. Saglietto, P. Renzi, A. Deagostino, E. Azzi   +5 more
wiley   +1 more source