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Cyanamide prodn. in high yield and selectively - from urea or cyanuric acid, isocyanuric acid in presence of microporous alumo:phosphate or zeolite catalyst

机译：氰胺产品在微孔铝：磷酸盐或沸石催化剂存在下，以高收率和选择性地从尿素或氰尿酸，异氰尿酸中提取

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Prodn. of cyanamide (I) comprises heating urea or cyanuric acid/isocyanuric acid at 300-700 deg.C in the presence of a crystalline alumophosphate and/or non-acidic or slightly acidic zeolite catalyst having a pore size of 0.3-1.5 nm.. - The alumophosphate can be a silicoalumophosphate, a metal alumophosphate, an element alumophosphate, a metal silicoalumophsophate or an element silicoalumophosphate, but is pref. VPl-5, MCM-9 or AlPO4-54. All of the strongly acidic centres on the surface of the zeolite catalyst are rendered inert by ion exchange with a cation or by de-alumination. De-aluminated Y-zeolite is the pref. zeolite catalyst. The reaction is carried out at 450-650 deg.C, with the reaction mixt. being in contact with the catalyst for 0.1-10 seconds.

机译：产品氰化物（I）的“制备”包括在结晶铝磷酸盐和/或孔径为0.3-1.5nm的非酸性或弱酸性沸石催化剂存在下，于300-700℃加热尿素或氰尿酸/异氰尿酸。 -铝磷酸盐可以是硅铝磷酸盐，金属铝磷酸盐，元素铝磷酸盐，金属硅铝磷酸盐或元素硅铝磷酸盐，但优选。 VP1-5，MCM-9或AlPO4-54。通过与阳离子进行离子交换或通过脱铝，使沸石催化剂表面上的所有强酸性中心均呈惰性。脱铝的Y型沸石是首选。沸石催化剂。反应在450-650℃下在反应混合物下进行。与催化剂接触0.1-10秒。

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公开/公告号DE4001805A1

专利类型
公开/公告日1991-07-25

原文格式PDF
申请/专利权人 SKW TROSTBERG AG 8223 TROSTBERG DE;
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申请/专利号DE19904001805
发明设计人 ROECK HEINRICH DR. 8223 TROSTBERG DE;HAMMER BENEDIKT DR. 8223 TROSTBERG DE;GOLL WERNER DR. 8268 GARCHING DE;ERNST STEFAN DR. 2900 OLDENBURG DE;WEITKAMP JENS PROF. DR.;
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申请日1990-01-23
分类号C01C3/16;
国家 DE
入库时间 2022-08-22 05:49:21

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