Baker’s yeast catalyzes the asymmetric reduction of prochiral ketones in water and in various organic solvents. The reaction in water, which is the first solvent of choice for bio-reactions, led to a high product yield and enantiomeric excess, but the low miscibility of organic molecules in water resulted in lower conversions when more hydrophobic ketones were used. Petroleum-based solvents suc...

Organic solvents are chemically different compounds with one common feature: They dissolve fats, oils, resins, cellulose, acetate, and cellulose nitrate, which makes them widely used in industry. Most often organic solvents are used in paint and lacquer industries, in production of pesticides, explosives, plastic, rubber, cellulose, air conditioners, in pharmaceutical industry, and in leather i...

Abstract Cellulose mixed esters (CMEs) substituted with two different types of acyl groups are promising polymeric materials various tunable properties but arduous to produce. This is because the insolubility cellulose in common solvents, and thus, industrial production CMEs desired degrees substitution (DSs) requires a costly multistep process. To accomplish their facile production, homogeneou...

In the present work, vinyl benzyl chloride (VBC) was polymerized by using free radical polymerization. The obtained PVBC reacted with dibutyl amine to obtain tertiary modified polystyrene based polymer (PVBC-Dibutyl amine). inverse gas chromatography (IGC) method used examine thermodynamic properties of polymer. Firstly, retention diagrams some polar and non-polar solvents on PVBC-Dibutyl were ...

The mixing of Newtonian and non-Newtonian fluids in a magnetic micro-mixer was studied numerically using  ferrofluid. The mixing process was performed in a three-dimensional steady-state micro-mixer. A magnetic source was mounted at the entrance of the micro-channel to oscillate the magnetic particles. The effects of electric current, inlet velocity, size of magnetic particles, and non-Newtonia...

Binary liquid mixtures of 1-butyl-3-methylimidazolium glutamate acid ([bmim][glu]) with alkanols (1-propanol, isobutanol and 1,2-propanediol) are studied in the full composition range as a function temperature using combined experimental computational chemistry approach. Experimental thermophysical information well derived excess mixing properties allowed to characterize these complex terms dev...

introduction: hearing loss is one of the most common occupational diseases. in most workplaces, workers are exposed to noise and solvents simultaneously, so the potential risk of hearing loss due to solvents may be attributed to noise.  in this study we aimed to assess the effect of exposure to mixed aromatic solvents on hearing in the absence of exposure to hazardous noise.   materials and met...

The morphology and nanosize of cathode materials play a crucial role in the improved electrochemical properties electrode material for lithium ion batteries. Herein, we report synthesis novel NH4V3O8 rectangular nanotube via facile one-pot solvothermal protocol with use mixing solvent containing glycerol, ethanol, ethylene glycol. evolution as-prepared from addition different solvents has been ...

The Cubic Plus Association (CPA) equation of state and the Soave–Redlich–Kwong (SRK) coupled to Mathias–Copeman volume correction parameters were used correlate vapor pressures densities pure polar aprotic solvents (PAS). It is shown that CPA model (with 2B scheme) performed better than inert scheme), SRK its modifications in all cases for pressure densities. performance two mixing rules, namel...

Subtilisin and alpha-chymotrypsin vigorously act as catalysts in a variety of dry organic solvents. Enzymatic transesterifications in organic solvents follow Michaelis-Menten kinetics, and the values of V/Km roughly correlate with solvent's hydrophobicity. The amount of water required by chymotrypsin and subtilisin for catalysis in organic solvents is much less than needed to form a monolayer o...