E.i. Dupont De Nemours and Company

The Chemours Company Fc, LLC

Katelyn Rae Walck

James Arnold Schultz

Allen Capron Sievert

David Richard Corbin

Joachim C Ritter

Sourav Kumar Sengupta

Lee Grant Sprague

Lee G Sprague

Aromatic compounds such as o-xylene are selectively nitrated by nitric acid in the presence of polyphosphoric acid and a large pore, acidic zeolite or a large pore, hydrophobic molecular sieve. This is an environmentally friendly, commercially viable, high conversion process for the selective nitration of aromatic compounds in the para position.

Process for the nitration of O-xylene and related compounds

A process for the purification of fluoroalkanesulfonate salt comprising (a) contacting a mixture of said salt and an inorganic salt contaminant with a solvent to selectively dissolve said fluoroalkanesulfonate salt in solution, and (b) isolating the solution, to yield a fluoroalkanesulfonate salt containing less than 500 micrograms of inorganic salt contaminant per gram of fluoroalkanesulfonate salt, or containing less than a maximum of 0.3% by weight of individual solvent.

Purification of fluoroalkanesulfonate salts

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West Chester, PA, United States of America

Katelyn Rae Walck