石油炼制与化工 ›› 2012, Vol. 43 ›› Issue (7): 44-47.

• 基础研究 • 上一篇    下一篇

异丁烯二步法制备甲基丙烯酸甲酯的研究

展江宏,聂宏元,徐新良   

  1.    中国石油乌鲁木齐石化公司研究院
  • 收稿日期:2011-12-26 修回日期:2012-01-07 出版日期:2012-07-12 发布日期:2012-07-05
  • 通讯作者: 展江宏 E-mail:zhanjhws@petrochina.com.cn

A STUDY OF TWO-STEP SYNTHESIS OF METHYL METHACRYLATE FROM ISOBUTENE

  • Received:2011-12-26 Revised:2012-01-07 Online:2012-07-12 Published:2012-07-05

摘要: 制备了用于异丁烯选择性氧化制备甲基丙烯醛(MAL)和MAL氧化酯化制备甲基丙烯酸甲酯(MMA)的复合氧化物和负载贵金属催化剂,开发了异丁烯二步法制备MMA新工艺。在异丁烯氧化制备MAL反应过程中,反应温度为380 ℃,反应压力为0.03 MPa,异丁烯平均转化率达到93.7%,MAL平均选择性达到92.3%。在MAL氧化酯化制备MMA反应过程中,反应温度为90 ℃,反应压力为0.27 MPa,对于间歇反应,MAL平均转化率为93.35%,MMA平均选择性为83.50%;对于双程连续反应,MAL平均转化率为93.24%,MMA平均选择性为80.06%。

关键词: 异丁烯, 氧化, 酯化, 甲基丙烯酸甲酯

Abstract: Compound oxide catalyst for isobutene selective oxidation to methacrolein (MAL) and supported noble metal catalyst for MAL oxidative esterification to methyl methacrylate (MMA) were prepared, and a new process for two-step synthesis of MMA from isobutene was developed. For isobutene to MAL process, under a reaction temperature of 380 ℃ and a reaction pressure of 0.03 MPa, the average conversion of isobutene and the average selectivity of MAL reached 93.7% and 92.3%, respectively. For MAL to MMA process, under a reaction temperature of 90 ℃ and a reaction pressure of 0.27 MPa, in batch reaction mode, the MAL average conversion and the average selectivity of MMA was 93.35% and 83.50%, respectively; under two-stage continuous operation mode, the MAL average conversion and the average selectivity of MMA was 93.24% and 80.06%, respectively.

Key words: isobutene, oxidation, esterification, methyl methacrylate