Who makes Nafion membrane?
the Chemours company
Nafion is a brand name for a sulfonated tetrafluoroethylene based fluoropolymer-copolymer discovered in the late 1960s by Walther Grot of DuPont. Nafion is a brand of the Chemours company….Nafion.
|Hazard statements||H319 , H335|
What is equivalent weight of Nafion?
The equivalent weight (EW) of Nafion is determined by the average distance between the side chains along the backbone, and is defined as the number of grams of dry polymer per mole SO3.
Is Nafion membrane porous?
In practically all applications Nafion membranes are used as dense, non-porous flat sheet membranes with smooth surfaces.
Is Nafion conductive?
Nafion® membranes have high proton conductivity, mechanical and chemical stability in its hydrated state and lower temperature, which make them a promising fuel cell electrolyte for transport, portable and stationary application [1, 2].
Is Nafion soluble in water?
No differences were found at 20 and 32°C, the two temperatures important to the present study. The solubilities in Nafion™ 117 are as follows: water, 22.0 g/g; methanol, 49.2 g/g; ethanol 45.0 g/g; propanol 48.6 g/g.
Is Nafion water permeable?
Nafion™ polymer functions like a very selective, semi-permeable membrane to water vapor.
Can water pass through Nafion membrane?
Nafion functions as an ion exchange resin when exposed to solutions. Nafion very readily absorbs water, from the vapor phase or from the liquid phase. Each sulfonic acid group will absorb up to 13 molecules of water.
What is sulphur fluoride?
SULFURYL FLUORIDE is a gas which is unaffected by water at temperatures up to 300F, but is slowly hydrolyzed by solutions of strong bases (Adv. Inorganic Chemistry, Cotton and Wilkinson, 1972, p. 455).
What is the chemical name of SO2F2?
Sulfuryl fluoride (also spelled sulphuryl fluoride) is an inorganic compound with the formula SO 2 F 2. It is an easily condensed gas and has properties more similar to sulfur hexafluoride than sulfuryl chloride, being resistant to hydrolysis even up to 150 °C. It is neurotoxic and a potent greenhouse gas,…
Is sulfuryl fluoride reacted with water?
Air & Water Reactions Sulfuryl fluoride is a gas which is unaffected by water at temperatures up to 300F, but is slowly hydrolyzed by solutions of strong bases (Adv. Inorganic Chemistry, Cotton and Wilkinson, 1972, p. 455). The products of hydrolysis are hydrofluoric acid and sulfuric acid (Pesticide Profiles, Kamrin, ed., 1997, p. 548).
What is sulfuryl difluoride used for?
Sulfuryl difluoride is a sulfuryl halide. It has a role as a fumigant insecticide. Sulfuryl fluoride appears as a colorless odorless gas. Shipped as a liquefied gas under its own vapor pressure.