Results 61 to 70 of about 2,406 (182)

Solvent-dependent complex reaction pathways of bromoform revealed by time-resolved X-ray solution scattering and X-ray transient absorption spectroscopy

Structural Dynamics, 2019
The photochemical reaction pathways of CHBr3 in solution were unveiled using two complementary X-ray techniques, time-resolved X-ray solution scattering (TRXSS) and X-ray transient absorption spectroscopy, in a wide temporal range from 100 ps to tens of ...
Qingyu Kong, Dmitry Khakhulin, Ilya A. Shkrob, Jae Hyuk Lee, Xiaoyi Zhang, Jeongho Kim, Kyung Hwan Kim, Junbeom Jo, Jungmin Kim, Jaedong Kang, Van-Thai Pham, Guy Jennings, Charles Kurtz, Rick Spence, Lin X. Chen, Michael Wulff, Hyotcherl Ihee   +16 more
doaj   +1 more source

Direct Production of Alkyl Levulinates from Cellulosic Biomass by a Single-Step Acidic Solvolysis System at Ambient Atmospheric Pressure

BioResources, 2015
A simple method was invented to achieve a high yield of cellulosic biomass-derived alkyl levulinates, which have the potential to be alternative fuel additives. Alkyl levulinates, such as butyl-, pentyl-, and hexyl levulinates, were produced using single-
Tatsuhiko Yamada, Mami Yamaguchi, Satoshi Kubo, Yukako Hishikawa   +3 more
doaj   +1 more source

Maintenance of Wind Turbine Blades and Microplastic Emission: How to Mitigate Environmental Risks

Wind Energy
With the expansion of wind energy, and also the aging of the wind turbines, the need for maintenance and repair of wind turbine blades increases. The maintenance and repair of wind turbine blades include grinding and joining parts and can lead to ...
Leon Mishnaevsky Jr
doaj   +1 more source

Steric Effects on Reaction Rates. VII. Application of a New MM2 Force-Field for Carbenium Ions to Solvolysis of Bridgehead Substrates

CHIMIA, 1984
The changes in steric energies (ΔEst) associated with the solvolysis of bridgehead halides and p-toluenesulfonates are calculated by means of an empirical force-field for carbenium ions, incorporated into Allinger’s MM2 programme.
Paul Müller, Jacky Blanc, Jiri Mareda
doaj   +1 more source

A sterospecific synthesis of 7α-hydroxycholesterol

Journal of Lipid Research, 1976
The five step synthesis of 7α-hydroxycholesterol utilizes the solvolysis of 7α-bromocholesterol benzoate with potassium acetate in acetic acid as the key step in controlling the stereospecificity of the reaction sequence.
D B Johnson, L Lack
doaj   +1 more source

Effects of Wood Meal Particle Size and Polyethylene Glycol 400 Content on Glycol Lignin Production

BioResources
Glycol lignin (GL) produced via acidic solvolysis of cedar wood meal with polyethylene glycol (PEG) is a highly functional material. In this study, the effects of wood meal particle size and amount of PEG added on the properties of PEG400-modified GLs ...
Takayuki Suzuki, Thi Thi Nge, Yusuke Matsumoto, Tatsuhiko Yamada   +3 more
doaj  

Mechanical Characterization of Carbon Fibers and Their Interfaces Recycled Through Plasma-Assisted Solvolysis Under Different Processing Conditions

Fibers
The rapid expansion of carbon-fiber-reinforced polymer (CFRP) applications in aerospace, automotive, and energy sectors has intensified concerns over end-of-life waste and the absence of efficient recycling solutions.
Ilektra Tourkantoni, Konstantinos Tserpes, Dimitrios Marinis, Ergina Farsari, Eleftherios Amanatides   +4 more
doaj   +1 more source

Chemical thermostabilization for the preparation of carbon fibers from softwood lignin [PDF]

BioResources, 2012
A thermally fusible softwood lignin was directly isolated by a solvolysis of cedar wood chips with a mixture of polyethylene glycol 400 (PEG 400) and sulfuric acid.
Jian Lin, Satoshi Kubo, Tatsuhiko Yamada, Keiichi Koda, Yasumitsu Uraki   +4 more
doaj  

Statistical Methods for the Investigation of Solvolysis Mechanisms Illustrated by the Chlorides of the Carbomethoxy Protecting Groups NVOC and FMOC

Journal of Analytical Methods in Chemistry, 2015
The solvolysis of 4,5-dimethoxy-2-nitrobenzyl chloroformate (NVOC-Cl, 1) is followed at 25.0°C in twenty hydroxylic solvents. A comparison with previously published rates for benzyl chloroformate and p-nitrobenzyl chloroformate indicates that the ...
Malcolm J. D’Souza, Jasbir K. Deol, Maryeah T. Pavey, Dennis N. Kevill   +3 more
doaj   +1 more source

On the mechanism of solvolysis of orthophosphoramidates

Zeitschrift für Naturforschung B, 1969
The data on the solvolysis of orthophosphoramidates are collected and rationalized into two groups: a mechanism involving a unimolecular decomposition of the compounds where nitrogen contains a positive charge, and a bimolecular one for molecules with uncharged nitrogen involving the entering and leaving groups at right angles to each other.
openaire   +1 more source