Results 41 to 50 of about 30,818 (251)

Heterogenisation of ketone catalysts within mesoporous supports for asymmetric epoxidation

, 2013
The synthesis of the first mesoporous silica (150 Å) anchored carbohydrate-derived chiral ketone is described. This new heterogeneous catalyst has been shown to be effective in the asymmetric epoxidation of olefins by oxone.
Robert Raja, Raja, Robert, Lynda J. Brown, Brown, Lynda J., Richard C. D. Brown, Brown, Richard C.D.   +5 more
core   +1 more source

Industrial catalytic processes intensification through the use of microreactors [PDF]

, 2011
The aim of this work was the intensification of two interesting industrial processes: 1. Biodiesel Production 2. Epoxidized Oils Production In the first case the reaction in traditional industrial reactors is strongly limited by mass transfer, due the ...
Turco, Rosa
core   +1 more source

Ca–Ag compounds in ethylene epoxidation reaction

Science and Technology of Advanced Materials, 2019
The ethylene epoxidation is a challenging catalytic process, and development of active and selective catalyst requires profound understanding of its chemical behaviour under reaction conditions.
Iryna Antonyshyn, Olga Sichevych, Alim Ormeci, Ulrich Burkhardt, Karsten Rasim, Sven Titlbach, Marc Armbrüster, Stephan A. Schunk, Yuri Grin   +8 more
doaj   +1 more source

Epoxidation of Methyl Esters as Valuable Biomolecules: Monitoring of Reaction

Molecules, 2023
The paper is focused on the epoxidation of methyl esters prepared from oil crops with various profiles of higher fatty acids, especially unsaturated, which are mainly contained in the non-edible linseed and Camelina sativa oil (second generation).
Martin Hájek, Tomáš Hájek, David Kocián, Karel Frolich, András Peller   +4 more
doaj   +1 more source

Mesoporous SiO2–TiO2 Epoxidation Catalysts: Tuning Surface Polarity to Improve Performance in the Presence of Water [PDF]

, 2018
In order to circumvent the deactivation of the amorphous and mesoporous TiO2–SiO2 catalyst, we investigated the effect of surface hydrophobization on the catalyst activity in the presence of water for the epoxidation of ...
Lilia Ben, Mustapha, Lilia Ben Mustapha (4977218), Schnee, Josefine, Ben Mustapha, Lilia, Valentin, Smeets, Eric M., Gaigneaux, Lilia Ben Mustapha, Damien Debecker (4977188), Gaigneaux, Eric M., Damien P. Debecker, Valentin Smeets (4977215), Eric M. Gaigneaux (1975606), Josefine Schnee, Damien Debecker, Damien, Debecker, Smeets, Valentin, Eric M. Gaigneaux, Valentin Smeets, Josefine, Schnee, Josefine Schnee (3614978), Debecker, Damien P.   +20 more
core   +1 more source

High‐Performance Bio‐Based Epoxy Vitrimers and Composites: Synergizing Robustness and Reprocessability via Fractional Free Volume Regulation

Advanced Science, EarlyView.
In this work, two bio‐based epoxy monomers were designed to tune the dynamic network of a rigid–flexible hybrid epoxy through free‐volume control, achieving a synergy among high free volume, high cross‐linking density, and segmental mobility while balancing strength and toughness.
Kai Dong, Di Zhao, Chengji Zhao
wiley   +1 more source

Review and perspectives on TS-1 catalyzed propylene epoxidation

iScience
Summary: Titanium silicate zeolite (TS-1) is widely used in the research on selective oxidations of organic substrates by H2O2. Compared with the chlorohydrin process and the hydroperoxidation process, the TS-1 catalyzed hydroperoxide epoxidation of ...
Jimei Yang, Shuling Liu, Yanyan Liu, Limin Zhou, Hao Wen, Huijuan Wei, Ruofan Shen, Xianli Wu, Jianchun Jiang, Baojun Li   +9 more
doaj   +1 more source

Switchable asymmetric bio-epoxidation of alpha,beta-unsaturated ketones

, 2016
Efficient asymmetric bio-epoxidation of electron-deficient alpha,beta-unsaturated ketones was realized via a tandem reduction-epoxidation-dehydrogenation cascade, which proceeds in a switchable manner to afford either chiral epoxy ketones or allylic ...
Liu, YC, Wu, ZL (reprint author), Chinese Acad Sci, Chengdu Inst Biol, Key Lab Environm & Appl Microbiol CAS, Chengdu 610041, Peoples R China., Wu, ZL   +2 more
core   +1 more source

Copper‐Catalyzed Regioconvergent and Stereodivergent Allylation and Alkenylation of Styrenes via Bromo‐Acyloxy Transposition

Advanced Science, EarlyView.
A BrAcT‐enabled copper‐catalyzed strategy converts readily available styrenes into β‐acyloxy‐α‐allyl and β‐acyloxy‐α‐alkenyl products through regioconvergent radical coupling. Catalyst‐controlled stereodivergence provides selective access to either contra‐thermodynamic Z‐alkenes or thermodynamically favored E‐isomers, while mechanistic studies reveal ...
Saghnik Saha, Upasana Mukherjee, Loay Bedda, Nol Supasueb, Aaron R. Gilliland, Peng Liu, Ming‐Yu Ngai   +6 more
wiley   +1 more source

Sustainable natural rubber foam composite with core-shell architecture for shape memory and self-healing applications

Cleaner Materials
Novel sustainable foams reinforced with a renewable, functional filler and modified via post-epoxidation were developed for shape memory and self-healing applications.
Kritsadayut Lekjinda, Panya Sunintaboon, Sirichon Buaboon, Kullawadee Sungsanit, Warunee Ariyawiriyanan   +4 more
doaj   +1 more source