在二甲基乙烯碳化反应中通过用酸进行再结晶来增强费里亚的活性
Jiangang Lv1, Long Chen1,2, Chong Chen1
1Sinopec Shanghai Research Institute of Petrochemical Technology Co., Ltd., Shanghai 201208, China.
Molecules (Basel, Switzerland)
|July 14, 2023
概括
研究人员通过开发一种新的ferrierite zeolite来改善甲基酸盐的生产. 这种使用酸合成的增强催化剂在二甲基乙烯碳化反应中提供了更高的效率和稳定性.
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
- 化学工程是化学工程的重要组成部分.
背景情况:
- 甲基 (MA) 是一种重要的工业化学品.
- 对于二甲基乙烯 (DME) 碳化到MA的常规MOR热酸盐催化剂,由于其12个环状通道,因此遭受了快速焦化.
- 对于这种反应,需要更稳定,更有效的催化剂.
研究的目的:
- 开发一种改进的热酸盐催化剂,用于将DME碳化成MA.
- 通过修改热带石结构和特性来提高催化剂的稳定性和效率.
- 为了研究一种新型合成方法对石性能的影响.
主要方法:
- 用一种特殊的化联结物,酸,重新结晶化铁 (FER) 焦化物.
- 使用N2吸附,传输电子显微镜 (TEM) 和富里埃变换红外光谱 (FT-IR) 进行修改过的焦石的表征.
- 评估催化剂在DME转化为MA的碳化过程中的性能.
主要成果:
- 用酸进行水热再结晶,产生具有较高Si/Al比率的费里里石热.
- 修改后的费里亚石表现出更大的特定表面积.
- 观察到八个环状通道内的布伦斯特德酸位数增加.
- 与处理的催化剂相比,开发的催化剂在将DME碳化为MA的过程中表现出更高的效率.
结论:
- 酸辅助再结晶是一种有效的方法,可以增强费里亚石的热带石特性.
- 修改后的费里里亚特热石显示了对DME碳化成MA的催化性能的提高.
- 这种方法为传统的催化剂提供了一个有希望的替代品,易于停用.
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