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AssigneeCouncil of Scientific and Industrial Research
InventorsBoyapati Manoranjan Choudary, Mannepalli Lakshmi Kantam, Katuri Jeeva Ratnam, Vijayakumar Karasala, Sridhar Chidara, Venkatachalam Subbiah, Santosh Gopalakrishnan, Ramaswamy Rajagopalan, Ninan Ninan Kovoor, Kuchibhatla Sitarama Sastri
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The present invention provides an ecofriendly method for preparing dinitramidic acid and its salts by nitration of ammonium sulfamate with fuming nitric acid as a nitrating agent using solid acid catalysts selected from the group consisting of a montmorillonite clay catalyst and metal ion exchanged K10 montmorillonite clay catalysts and surface supported catalysts and preparation of ammonium dinitramide by neutralization of the dinitramidic acid with ammonia and separation of ammonium dinitramide.
A process for the preparation of dinitramidic acid comprising nitrating ammonium sulfamate with fuming nitric acid as a nitrating agent using a solid acid catalyst selected from the group consisting of a montmorillonite clay catalyst, metal ion exchanged K10 montmorillonite clay catalyst and a surface supported catalyst to obtain dinitramidic acid.
A process for the preparation of ammonium dinitramide comprising nitrating ammonium sulfamate with fuming nitric acid as a nitrating agent using a solid acid catalyst selected from the group consisting of a montmorillonite clay catalyst, metal ion exchanged K10 montmorillonite clay catalysts and surface supported catalysts, and neutralizing the dinitramidic acid obtained with ammonia as the neutralizing agent and separating ammonium dinitramide.
Dependencies are inferred from the claim text.