At what temperature above that of phosphoric acid does gaseous fluorine begin to escape?
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At what temperature above that of phosphoric acid does gaseous fluorine begin to escape?
I didn’t even know if you really had a problem It’s still to earn points by keeping the forum active. The escape of fluorine from phosphoric acid is not only related to temperature; the concentration of phosphoric acid and the amount of impurities present also play important roles in determining fluoride escape. Different concentrations result in different temperatures, so it cannot be generalized.
What was said on the second floor makes sense; it is also related to the concentration of fluorine itself, as well as the partial pressure in the system.
“Can something like “fluorine” be produced through phosphoric acid? The term \"gaseous fluorine\" is itself an unscientific expression
F is brought in from phosphate ores; its content is higher in wet-process phosphoric acid and lower in hot-process phosphoric acid. But when you mention gaseous F, it should be emitted in the form of HF, right?
Some books state that about 2% of fluorine escapes during the wet phosphoric acid extraction reaction; nothing is clear about the rest. Environmental regulations for phosphate production require that the fluoride content in the emissions be 10 g/t of phosphorus pentoxide