通过液体介导的Si-OH化ZSM-22石,以提高N-Decane水分异构的性能
Tong Chang1, Renhui Deng2, Jiaxin Xie2
1Department of Applied Chemistry, Yuncheng University, Yuncheng 044000, China.
治愈ZSM-22化物框架将Si-OH组转化为Si-O-Si键,通过增加同位素产量和反应剂转化,增强结晶性和改善n-decane水分异构性能.
科学领域:
- 材料科学
- 催化剂
- 纳米技术
背景情况:
- 石框架,如ZSM-22,含有丰富的Si-OH组作为缺陷点.
- 这些Si-OH组容易受到水的攻击,限制了在水环境中的应用.
- 了解和修改这些缺陷点对于热岩的性能至关重要.
研究的目的:
- 开发一种液体介导的固化工艺,将ZSM-22热中的Si-OH组转化为Si-O-Si键.
- 研究这种愈合过程对石结晶度,结构和酸度的影响.
- 评估化ZSM-22化催化剂在n-decane化中的性能.
主要方法:
- 使用液体介导的治愈过程来处理ZSM-22焦石.
- 对处理溶液的组成和热水条件进行系统的调查.
- 石的特性包括结晶性,排序程度,孔隙连接性,Si/Al比率,形态和酸度.
- 在n-decane水分化中对催化性能的评估.
主要成果:
- 最佳的治愈疗法有效地提高了ZSM-22热石的结晶性和排序程度.
- 治愈后的焦岩显示出孔隙连接性得到改善,但Si/Al比率或形态没有显著变化.
- 减少Si-OH组减少了易斯酸位,但保留了布伦斯特酸度.
- 与原始焦化物相比,固化的催化剂在n-decane水分化中表现出更高的反应物转化和同位素产量.
结论:
- 液体中介治愈是一种有效的方法来改善ZSM-22热带石的特性和稳定性.
- 由于孔隙封闭的改善,增强的焦化物在n-decane水合化中表现出优异的性能.
- 这种方法在具有挑战性的水分异构化应用中提供了利用ZSM-22的潜力.
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