Results 21 to 30 of about 9,903,999 (366)

MANNAN PRECIPITATION FROM ALOE VERA LEAF PULP JUICE USING METHANOL AND ISOPROPYL ALCOHOL AS ANTI-SOLVENT: EXPERIMENTAL AND EMPIRICAL MODELLING APPROACH [PDF]

open access: yes, 2012
Precipitation of mannan from Aloe vera leaf pulp juice was investigated using anti-solvent precipitation process under room temperature condition. The aims of this work were to study the effects of types (methanol and isopropyl alcohol) and amount of ...
Retnowati, Diah Susetyo   +5 more
core   +1 more source

Seeing Through Solvent Effects using Molecular Balances [PDF]

open access: yes, 2013
The study of molecular interactions is often complicated by solvent effects. Here we have used a series of 11 synthetic molecular balances to measure solvent and substituent effects on the positions of conformational equilibria in 13 different solvents ...
Adam, Catherine   +2 more
core   +1 more source

Modelling and experimental study of separators for co-solvent recovery in a supercritical extraction process [PDF]

open access: yes, 2006
Co-solvent recovery in supercritical extraction is addressed here through a theoretical description of the behaviour of a CO2 + co-solvent mixture into a cascade of cyclonic separators, such as those existing in conventional fractionation processes based
Camy, Séverine   +1 more
core   +1 more source

Calculation of the stability constants for the complex formation of dioxovanadium (V) with methyliminodiacetic acid in various H2O + CH3OH solutions using kamlet-abboud-taft equation [PDF]

open access: yesJournal of the Serbian Chemical Society, 2013
The stability constants for the complex formation of VO2+ cation with methyliminodiacetic acid (MIDA) have been determined in this research for various volume fractions of methanol (0-45% v/v) at T = 298 K, I = 0.1 mol dm-3 of sodium perchlorate.
Majlesi Kavosh   +4 more
doaj   +1 more source

Gutmann’s Donor and Acceptor Numbers for Ionic Liquids and Deep Eutectic Solvents

open access: yesFrontiers in Chemistry, 2022
An experimental and computational methodology for the analysis of the Lewis acid/base responses of ionic liquids (ILs) and deep eutectic solvents (DES) is proposed.
Bruno Sanchez   +2 more
doaj   +1 more source

Solvolysis kinetic study and direct spectrofluorimetric analysis of the fungicide benomyl in natural waters

open access: yesMacedonian Journal of Chemistry and Chemical Engineering, 2014
A direct spectrofluorimetric method for the quantitative analysis of benomyl in natural waters is described. Benomyl is an instable, fluorescent fungicide that mainly decomposes into carbendazim and n-butyl-isocyanate in organic and aqueous solutions ...
Diène Diègane Thiare   +8 more
doaj   +1 more source

Catalytic Approaches to Multicomponent Reactions: A Critical Review and Perspectives on the Roles of Catalysis

open access: yesMolecules, 2021
In this review, we comprehensively describe catalyzed multicomponent reactions (MCRs) and the multiple roles of catalysis combined with key parameters to perform these transformations.
Brenno A. D. Neto   +2 more
doaj   +1 more source

DNA Modulates Solvent Isotope Effects in a Nanopore [PDF]

open access: yes, 2015
Here we investigate the modulation of solvent isotope effects by the entry of DNA molecules into individual α-haemolysin nanopores. Solvent isotope effects in D2O versus H2O were enhanced (kH/kD ≈ 1.6) compared to the bulk (kH/kD ≈ 1.2), except when the ...
Cockroft, Scott; id_orcid   +1 more
core   +1 more source

Ability of Lewis Acids with Shallow σ-Holes to Engage in Chalcogen Bonds in Different Environments

open access: yesMolecules, 2021
Molecules of the type XYT = Ch (T = C, Si, Ge; Ch = S, Se; X,Y = H, CH3, Cl, Br, I) contain a σ-hole along the T = Ch bond extension. This hole can engage with the N lone pair of NCH and NCCH3 so as to form a chalcogen bond.
Rafał Wysokiński   +3 more
doaj   +1 more source

Solvent Effects on the Spin-Transition in a Series of Fe(II) Dinuclear Triple Helicate Compounds

open access: yesCrystals, 2018
This work explores the effect of lattice solvent on the observed solid-state spin-transition of a previously reported dinuclear Fe(II) triple helicate series 1–3 of the general form [FeII2L3](BF4)4(CH3CN)n, where L is the Schiff base condensation ...
Alexander R. Craze   +5 more
doaj   +1 more source

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