Results 61 to 70 of about 612,546 (214)

Solvent and ligand effects on α-pinene epoxidation with Methyltrioxorhenium/hydrogen peroxide system (MTO/H2 O2 )

Revista Facultad de Ingeniería Universidad de Antioquia, 2003
Several ligands were studied as co-catalysts for α-pinene epoxidation with MTO/H2O2. Pyridine is an efficient co-catalyst with dichlorometane, tetrahydrofuran or ethyl acetate. However, large amounts of pyridine are required.
Lina María Gonazález R., Aída Luz Villa de P., Georges Gelbard, Consuelo Montes de Correa   +3 more
doaj   +1 more source

Active efflux systems in the solvent-tolerant bacterium Pseudomonas putida S12

, 2002
The aim of the research presented in this thesis was to study the molecular mechanisms of organic solvent tolerance in Pseudomonas putida S12. This bacterium is capable of growth at saturated solvent concentrations, which are lethal to normal bacteria ...
Kieboom, J.
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Extraction of Diterpenoid Lactones of Andrographis paniculata using Liquid Solvents: Effect of Solvent’s Hildebrand Solubility Parameter on Extraction Efficiency [PDF]

, 2006
Two diterpenoid lactones responsible to the multi healing properties of Andrographis paniculata have been extracted using 16 different liquid solvents. The effect of Hildebrand solubility parameter of the solvents on solid-liquid extraction yield using ...
Kumoro, A.C., Hasan, M.
core  

Switchable Magnesium Catalysis: Dehydrogenative Borylation Versus Hydroboration of Terminal Alkynes

ChemistryEurope
Organoboranes are key intermediates in modern synthetic chemistry, yet their preparation often relies on precious metal catalysts and multistep protocols.
Darakshan Parveen, Radhika Shrivas, Ganping Wang, Laurent Maron, Dipak Kumar Roy   +4 more
doaj   +1 more source

Effects of the Solvent and Calcination Temperature on LaFeO3 Catalysts for Methanol Oxidation [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2016
In this work, two types of solvents ethanol or water were used in preparation of the LaFeO3 catalysts by citrate sol gel method. The obtained samples were subjected to various calcination temperatures in order to study the catalytic activity and ...
Mahmoud Lebid, Mahmoud Omari
doaj  

Kinetic Solvent Effects in Organic Reactions

, 2018
This article reviews prior work studying reaction kinetics in solution, with the goal of using this information to improve detailed kinetic modeling in the solvent phase.
Belinda, Slakman, Belinda Slakman, Richard West, Richard, West   +3 more
core   +1 more source

Solvent-Assisted Modification to Enhance Proton Conductivity and Water Stability in Metal Phosphonates

, 2020
Although proton-conductive metal phosphonates with well-defined structure offer a favorable platform for exploring their structure–property relationship, investigating of the synergic effect of phosphonate groups and functional moieties on proton ...
Shimin Chen (5368544), Shimin Chen, Shengchang Xiang, Jiali Huang (590640), Shengchang Xiang (1431784), Yingxiang Ye, Zhangjing Zhang, Fahui Xiang, Chulong Liu (4099306), Zhenni Que (8485830), Zhangjing Zhang (1431781), Fahui Xiang (8485833), Yisi Yang (5704268), Jiali Huang, Yisi Yang, Zhenni Que, Yunbin Li (5677625), Yunbin Li, Chulong Liu, Yingxiang Ye (1431787)   +19 more
core   +1 more source

DFT Based Quantum Chemical Descriptors of 1-Substituted THβC, DHβC, βC Derivatives

Cumhuriyet Science Journal, 2017
This research hasfocused on the chemical reactivity behavior of N-1 substituted βCCM derivativeswhich are isolated from natural or synthetically sources.
Goncagul Serdaroglu, Mustafa Elık
doaj   +1 more source

Cleaning of water-gilded surfaces using hydro- and solvent-gels

, 2013
This paper describes the implementation of three customized gels on a 19th century panel painting for the removal of its degraded natural resin varnish from a water-gilded surface and a complex solvent-sensitive stratigraphic construction over the gilded
Bakalarou, Angeliki, Theodorakopoulos, Charis   +1 more
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Renewing Interest in Zeolites as Adsorbents for Capture of Cationic Dyes from Aqueous and Ethanolic Solutions: A Simulation-Based Insight into the Efficiency of Dye Adsorption in View of Wastewater Treatment and Valorization of Post-Sorption Materials

Molecules
The impact of solvents on the efficiency of cationic dye adsorption from a solution onto protonated Faujasite-type zeolite (FAU-Y) was investigated in the prospect of supporting potential applications in wastewater treatment or in the preparation of ...
Lotfi Boudjema, Marwa Assaf, Fabrice Salles, Pierre-Marie Gassin, Gaelle Martin-Gassin, Jerzy Zajac   +5 more
doaj   +1 more source