摘要
以马来酸酐(MA)和碳酸铵(AC)为原料,采用低温固氮、高温聚合,生成中间体聚琥珀亚氨酸(PSI),PSI碱性水解,生成聚天门冬氨酸(PASP)阻垢剂。研究了反应物摩尔比、反应温度、反应时间、阻垢剂的浓度对PSI产率和阻垢效果的影响。结果表明,马来酸酐∶碳酸铵=1∶1.2,低温65℃反应1.5 h,高温178℃反应1 h,生成中间体PSI,在75℃下以2.0 mol/L的NaOH溶液水解PSI,生成聚天门冬氨酸盐阻垢剂,调节pH,生成聚天门冬氨酸。阻垢剂加量为2.0 mg/L时,阻垢率可达98.80%。
Polyaspartic acid was synthesized with raw materials maleic anhydride and salvolatile. Nitrogen fixation required low temperature and improved temperature polymerization intermediate sub-acid poly amber （PSI） ,PSI alkaline hydrolysis into polyaspartic acid （PASP） scale inhibitors. Effect of reaction temperature, reaction time and condensity of the PASP on PASP were studied. Experiment results showed that n （MA） ： n （AC） = 1 ： 1.2, reacted 1.5 h at low reaction temperature 65℃, reacted 1 h at high reaction temperature 178℃ ,PSI was prepared,then was hydrolyzed to generate polyaspartate at 75℃ under the concentration 2.0 mol/L of NaOH solution inhibitor polyaspartic acid salt, PASP concentrate was 2.0 mg/L,scale inhibition rate was 98.80%.
出处
《应用化工》
CAS
CSCD
2011年第12期2113-2115,共3页
Applied Chemical Industry
基金
陕西省教育厅资助项目(2010JK544)
渭南师范学院基金资助项目(08YKZ004
YKF011)
关键词
聚天门冬氨酸
马来酸酐
合成
阻垢剂
palyasportic acid
maleic anhydride
synthesis
scale inhibitor
