Results 21 to 30 of about 81,083 (313)

Scientific Opinion on Flavouring Group Evaluation 23, Revision 4 (FGE.23Rev4): Aliphatic, alicyclic and aromatic ethers including anisole derivatives from chemical groups 15, 16, 22, 26 and 30 [PDF]

open access: yesEFSA Journal, 2013
The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to evaluate 21 flavouring substances in the Flavouring Group Evaluation 23, Revision 4, using the Procedure in Commission ...
EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
doaj   +1 more source

Scientific Opinion on Flavouring Group Evaluation 23, Revision 3 (FGE.23Rev3): Aliphatic, alicyclic and aromatic ethers including anisole derivatives from chemical groups 15, 16, 22, 26 and 30

open access: yesEFSA Journal, 2011
The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to evaluate 20 flavouring substances in the Flavouring Group Evaluation 23, Revision 3, using the Procedure in Commission ...
EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
doaj   +1 more source

Iron Oxide-Cobalt Nanocatalyst for O-tert-Boc Protection and O-Arylation of Phenols

open access: yesNanomaterials, 2018
Efficient and general protocols for the O-tert-boc protection and O-arylation of phenols were developed in this paper using a recyclable magnetic Fe3O4-Co3O4 nanocatalyst (Nano-Fe-Co), which is easily accessible via simple wet impregnation techniques in ...
Vilas B. Gade   +4 more
doaj   +1 more source

Platinum nanoparticles supported on N-doped carbon nanotubes for the selective oxidation of glycerol to glyceric acid in a base-free aqueous solution† [PDF]

open access: yesRSC Advances, 2015
Selective oxidation of glycerol was carried out over Pt catalysts supported on nitrogen-doped carbon nanotubes (Pt/N-CNTs) with molecular oxygen under atmospheric pressure in base-free aqueous solution.
Shasha Chen   +3 more
doaj   +1 more source

Hydrogen spillover assisted by oxygenate molecules over nonreducible oxides

open access: yesNature Communications, 2022
Spontaneous migration of H-atoms from metal particles to a nonreducible oxide support is generally limited by thermodynamics. Here, small oxygenate molecules are found to act as effective H-carriers to promote this process and lead to much improved ...
Mingwu Tan   +9 more
doaj   +1 more source

New synthetic phosphinate analogues of lecithin

open access: yesJournal of Lipid Research, 1971
The chemical syntheses of two new, completely nonhydrolyzable phosphinate analogues of lecithin are described. These have the structures ROCH2CH(OR)CH2CH2P(O)(O−)CH2CH2N+(CH3)3 and ROCH2CH(OR′)CH2P(O)(O−)CH2CH2CH2N+(CH3)3, where R = C18H37 and R ...
ARTHUR F. ROSENTHAL, SERGE V. CHODSKY
doaj   +1 more source

Complexes of aluminum, iron(III), and gallium(III) chlorides with ethers in synthesis of highly reactive polyisobutylene

open access: yesЖурнал Белорусского государственного университета: Химия, 2020
In this review, the latest achievements in the field of cationic polymerization of isobutylene catalyzed by the complexes of conventional Lewis acids with ethers are presented.
Sergei V. Kostjuk
doaj   +1 more source

Biosynthesized Ag/α-Al2O3 catalyst for ethylene epoxidation: the influence of silver precursors [PDF]

open access: yesRSC Advances, 2014
Biosynthesized Ag/α-Al2O3 catalysts toward ethylene epoxidation were prepared with Cinnamomum camphoratrees (CC) extract using AgNO3, silver–ammonia complex ([Ag (NH3)2]+) and silver–ethylenediamine complex ([Ag(en)2]+) as the silver precursors.
Xiaolian Jing   +5 more
doaj   +1 more source

One-Step Synthesis of Au-Ag Nanowires through Microorganism-Mediated, CTAB-Directed Approach

open access: yesNanomaterials, 2018
Synthesis and applications of one dimensional (1D) metal nanostructures have attracted much attention. However, one-step synthesis of bimetallic nanowires (NWs) has remained challenging.
Luhang Xu   +6 more
doaj   +1 more source

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