改性Raney Cu催化一乙醇胺脱氢合成甘氨酸 |
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引用本文: | 蔡振云,卢祖国,白传伟. 改性Raney Cu催化一乙醇胺脱氢合成甘氨酸[J]. 精细化工, 2003, 20(3): 187-189 |
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作者姓名: | 蔡振云 卢祖国 白传伟 |
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作者单位: | 浙江大学,化工研究所,浙江,杭州,310027 |
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摘 要: | 一乙醇胺在氢氧化钠的水溶液中〔w(NaOH)=12%~18%〕,用含有铬和锗等贵金属改性的RaneyCu催化剂脱氢合成甘氨酸。反应温度150~180℃,反应压力0 8~1 2MPa,反应时间2~4h。实验结果表明:改性RaneyCu催化剂比普通RaneyCu有更好的活性和使用寿命,使一乙醇胺的平均转化率从92%提高到97%,有效使用寿命(一乙醇胺的转化率≥90%)从5次延长到15次以上。
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关 键 词: | 甘氨酸 一乙醇胺 改性RaneyCu催化剂 |
文章编号: | 1003-5214(2003)03-0187-03 |
Synthesis of Glycine by Catalytic Dehydrogenation of Monoethanolamine with Modified Raney Copper |
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Abstract: | Monoethanolamine was mixed with an aqueous solution of sodium hydroxide〔w(NaOH)=12%-18%〕 in the presence of an effective amount of modified Raney copper catalyst containing noble metals of chromium and germanium.The optimal conditions for the dehydrogenation reaction were temperature 150-180 ℃,pressure 08-12 MPa and reaction time 2-4 h.Experimental results indicated that the modifed Raney copper catalyst has far more activity and longer lifespan than normal Raney copper catalyst,as the average conversion of monoethanolamine was raised from 92% to 97%,and the effective service life from 5 times to more than 15 times. |
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Keywords: | glycine monoethanolamine modified Raney copper catalyst |
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