Results 91 to 100 of about 543,485 (263)

Solvent-free fluidic organic dye lasers

open access: yesOptics Express, 2013
We report on the demonstration of liquid organic dye lasers based on 9-(2-ethylhexyl)carbazole (EHCz), so-called liquid carbazole, doped with green- and red-emitting laser dyes. Both waveguide and Fabry-Perot type microcavity fluidic organic dye lasers were prepared by capillary action under solvent-free conditions. Cascade Förster-type energy transfer
Eun Young, Choi   +7 more
openaire   +2 more sources

Enzyme catalysis with small ionic liquid quantities [PDF]

open access: yes, 2018
Enzyme catalysis with minimal ionic liquid quantities improves reaction rates, stereoselectivity and enables solvent-free processing. In particular the widely used lipases combine well with many ionic liquids.
Fischer, Fabian   +2 more
core  

Quinaldinium Chlorochromate(VI), (QnCC) Catalyzed Oxidation of Alcohols with Periodic Acid Under Solvent-Free Conditions and Microwave Irradition

open access: yesJournal of the Turkish Chemical Society, Section A: Chemistry, 2018
The economic synthesis of quinaldinium chlorochromate(VI), C10H9NH[CrO3Cl], (QnCC) was performed by using a 1:1:1 stoichiometric amounts of CrO3, HCl (aq) and quinaldine.
Melek Canbulat Özdemir
doaj   +1 more source

Synthesis of cholesterol-reducing sterol esters by enzymatic catalysis in bio-based solvents or solvent-free [PDF]

open access: yes, 2016
Enzymatic synthesis of a β-sitosterol ester in bio-based solvents was compared with conventional solvents. Limonene and p-cymene gave higher initial reaction rates than n-hexane, and comparable conversions after 24 hours (∼75%).
Attard, Thomas M.   +4 more
core   +1 more source

THE ADDITION OF PETROLEUM BENZIN IN MIXING OF CRUDE PALM OIL AND METHANOL ON BIODIESEL PRODUCTION

open access: yesIndonesian Journal of Chemistry, 2010
Research on transesterification of crude palm oil (CPO) using petroleum benzin as solvent has been done. This research aims to determine the optimum concentration of catalyst KOH and NaOH, mole ratio of methanol to oil, volume ratio of solvent to oil ...
Abdullah Abdullah   +3 more
doaj   +1 more source

Free Energy, Enthalpy and Entropy from Implicit Solvent End-Point Simulations

open access: yesFrontiers in Molecular Biosciences, 2018
Free energy is the key quantity to describe the thermodynamics of biological systems. In this perspective we consider the calculation of free energy, enthalpy and entropy from end-point molecular dynamics simulations. Since the enthalpy may be calculated
Federico Fogolari   +6 more
doaj   +1 more source

Solvent-free nanofluids

open access: yes, 2006
Abstracts of Papers of the American Chemical ...
Giannelis, E. P.   +6 more
openaire   +1 more source

Ultrasound Assisted One-pot Synthesis of Dihydropyrimidinones Using Holmium Chloride As Catalyst [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2015
A simple and green chemical procedure was reported for the synthesis of dihydropyrimidinones from various aldehydes, ethyl acetoacetate and urea or thiourea using  holmium chloride as catalyst.
S. Kakaei, H. Sid Kalal, H. Hoveidi
doaj  

Solvent-Free Synthesis of Imidazo [1,2-a] pyridin-tetrazolo [1,5-a] Quinolines via an IMCR One-Pot Process [PDF]

open access: gold, 2018
Sandra C. Ramírez‐López   +2 more
openalex   +1 more source

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