CAS: 14459-95-1; Potassiumhexacyanoferrate(Ii) Trihydrate

专利信息

专利号:US-7417168-B2
优先权日:2006-04-07
标 题 :Method for preparing hydroxylamine
发明人：YAO PIN-TO; HSIEH CHENG-FA; HWANG YUH-ING
权利人:CHINA PETROCHEMICAL DEV CORP
摘要:A method for preparing hydroxylamine is provided that includes the steps of (i) pretreating an acidic buffer solution; and (ii) reducing nitrate ions in the acidic buffer solution with hydrogen to give hydroxylamine in the presence of catalysts, wherein the pretreatment is performed by adding a precipitant represented by formula (I) to the acidic buffer solution,n n[(A)aM(CN) 6 .xH 2 O]  (I)n nallowing the metal impurities in the acidic buffer solution to react with the precipitant to form metal complex, and then to remove the metal complex. The metal complex is formed and separated by pretreating the acidic buffer solution with a specific precipitant without adjusting pH and changing the composition of the acidic buffer solution prior to hydroxylamine synthesis, thus enhancing the selectivity of the hydroxylamine production.

专利号:EP-1977994-B9
优先权日:2007-04-04
标 题:A method for preparing hydroxylamine
发明人：YAO PIN-TO; HSIEH CHENG-FA; HWANG YUH-ING
权利人:CHINA PETROCHEMICAL DEV CORP
摘要:A method for preparing hydroxylamine is provided that includes the steps of (i) pretreating an acidic buffer solution; and (ii) reducing nitrate ions in the acidic buffer solution with hydrogen to give hydroxylamine in the presence of catalysts, wherein the pretreatment is performed by adding a precipitant represented by formula (I) to the acidic buffer solution, n[(A)aM(CN) 6 ÙxH 2 O] (I) nwherein A is selected from the group of IA metals and NH 4 , M is selected from the group of IIIB metals, a is 3 or 4, and x is an integer of 0 to 10, nallowing the metal impurities in the acidic buffer solution to react with the precipitant to form metal complex, and then to remove the metal complex. The metal complex is formed and separated by pretreating the acidic buffer solution with a specific precipitant without adjusting pH and changing the composition of the acidic buffer solution prior to hydroxylamine synthesis, thus enhancing the selectivity of the hydroxylamine production.

专利号:CN-114368762-B
优先权日:2021-11-10
标 题 :Exogenous source 15 NO donor sodium nitroprusside [ ] 15 Synthesis method of NO)

专利号:CN-118598930-B
优先权日:2024-08-02
标 题:Synthesis method of 17 alpha-hydroxy progesterone

专利号:CN-118598930-A
优先权日:2024-08-02
标 题:Synthesis method of 17 alpha-hydroxy progesterone