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The chemicals sigma-aldrich and merck used were hydrogen peroxide 30 , formic acid 85 , 1-n-butyl,3-methylimidazolium tetrafluoro borate il1 and 1-n-butyl,3-methylimidazolium chloride il2.The representative high sulfur coal samples scf and b were collected from two different collieries of bapung coalfield n 27132723 e 95359600, meghalaya india and.
We are an innovative enterprise integrating R & D, production, sales and after-sales service. We have more than 60 years of experience in the field of crushing, beneficiation, sand making and building materials. We serve customers in more than 160 countries around the world.