发明名称 Manufacture of hydroxylammonium salts
摘要 Hydroxylammonium salts are manufactured by a process comprising the catalytic reduction of nitric oxide with hydrogen in a dilute aqueous mineral acid in the presence of a suspended platinum catalyst at an elevated temperature, wherein the reaction is carried out in vessels of which the walls consist of conventional copper-free molybdenum-containing austenitic chromium-nickel steels which contain from 16 to 28% by weight of chromium, from 20 to 50% by weight of nickel, from 1 to 4% by weight of molybdenum and at most 0.1% by weight of carbon and which in addition contain an amount of titanium which is at least 5 times the amount of carbon but is not more than 1.0% by weight, or an amount of niobium or tantalum which is at least 8 times the amount of carbon but is not more than 1.5% by weight. The present invention relates to a process for the manufacture of of hydroxylammonium salts by catalytically reducing nitric oxide with hydrogen in a dilute aqueous mineral acid in the presence of a suspended platinum catalyst at an elevated temperature, using corrosion-resistant materials of construction.
申请公布号 US4340575(A) 申请公布日期 1982.07.20
申请号 US19780942658 申请日期 1978.09.15
申请人 BASF AKTIENGESELLSCHAFT 发明人 RAPP, GUENTHER;JOCKERS, KURT;THOMAS, ERWIN
分类号 B01J23/00;C01B21/14;C22C38/50;(IPC1-7):C01B21/20 主分类号 B01J23/00
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