在MCM-41催化剂上合成二甲基-1,6-二甲基酸与甲基酸作为碳нил源的二甲基-1,6-二甲基酸
Junya Cao1, Liyan Zhao2, Xiaoxuan Wang1,2
1School of Chemical & Environmental Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China.
ACS omega
|October 7, 2024
概括
富含西兰醇的MCM-41催化剂有效地从1,6-hexanediamine和甲基碳酸盐中合成二甲基-1,6-二碳酸盐 (HDC). 在优化条件下,产量为92.6%的HDC,证明了MCM-41.
科学领域:
- 催化剂是一种催化剂.
- 材料科学 材料科学 材料科学
- 有机合成 有机合成
背景情况:
- 甲基甲-1,6-二碳酸盐 (HDC) 是用于生产甲二酸盐 (HDI) 的非基因的关键中间体.
- 开发高效和选择性的HDC合成催化剂对于可持续的化学制造至关重要.
研究的目的:
- 通过利用甲基碳酸盐 (MC) 在富含西兰醇的MCM-41催化剂上碳化1,6-二胺 (HDA) 来合成HDC.
- 为了优化反应条件并评估催化剂的性能和可重复使用性.
主要方法:
- 在MCM-41催化剂上用MC对HDA进行碳化.
- 反应温度,反应剂比率,甲醇剂量,催化剂负荷和反应时间的优化.
- 使用N2吸附/脱附,SEM,XRD,NH3-TPD,FTIR和1H MAS NMR进行催化剂表征.
主要成果:
- 在优化条件下 (190°C,HDA:MC:甲醇比 1:6:50,10重%催化剂,3小时) 实现了92.6%的HDC最大产量,HDA转化率为100%.
- 鉴定结果显示,MCM-41上丰富的表面醇组有助于其高催化活性.
- 在五个循环后观察到催化剂失活,归因于醇组损失,碳沉积和颗粒聚合.
结论:
- 富含西拉的MCM-41是一种有效的催化剂,用于合成具有高产率和选择性的HDC.
- 催化剂在合成各种阿利法和环双碳酸盐方面具有广泛的适用性.
- 了解禁用机制对于改善催化剂寿命和过程可持续性至关重要.
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