Fluoroethers and other next generation fluids

Synthesis of dimethyl ether (DME) on modified HY zeolite and modified HY zeolite-supported Cu–Mn–Zn catalysts

“…Dimethyl ether (DME) and fluoro-dimethyl ether are environmentally friendly aerosol sprays and green refrigerants because of their zero ozone depletion potential (ODP) and their lower globe warming potential (GWP) compared with the traditional chlorofluorocarbons (CFCs, Freon) and newer R134a (HFC-134a) [1][2][3][4][5]. At the same time, direct utilization of dimethyl ether fuel instead of diesel-fuel for vehicles gives out lower NOx, and CO and particle concentrations in exhaust even without catalytic treatment [6].…”

High-pressure speed of sound measurements in methyl nonafluorobutyl ether and ethyl nonafluorobutyl ether

“…The continuous search to identify alternatives to the commonly halocarbonated compounds used in industry in applications as refrigeration, foaming, precision cleaning and fire extinguishing has attracted increasing attention on hydrofluoroethers (HFEs) [2][3][4]. The main reason for this interest is their low impact environmental profile, including zero ozone depletion potential and short atmospheric lifetimes.…”

Hydrofluoroethers as Orthogonal Solvents for the Chemical Processing of Organic Electronic Materials

“…HFEs have also been demonstrated as environmental friendly cleaning solvents for electronics. [10][11][12] Typical commercially available HFEs are isomeric mixtures of methyl nonafluorobutyl ether and methyl nonafluoroisobutyl ether (HFE 7100) and 3-ethoxy-1,1,1,2,3,4,4,5,5,6,6,6-dodecafluoro-2-trifluoromethylhexane (HFE 7500) shown in Scheme 1. We tested the impact of these solvents on well-characterized and commercially available organic electronic materials.…”