通过选择性去除结构缺陷来提高热岩在水相中的稳定性
Sebastian Prodinger1, Miroslaw A Derewinski1, Aleksei Vjunov1
1Institute for Integrated Catalysis, Pacific Northwest National Laboratory , P.O. Box 999, Richland, Washington 99352, United States.
Journal of the American Chemical Society
|March 15, 2016
概括
暴露在热水中的石的结构不稳定性是由缺失的-氧键引起的. 用三甲基基覆盖这些缺陷,显著提高了石的稳定性,同时保持了微孔性和吸附能力等关键性质.
科学领域:
- 材料科学
- 催化剂
- 纳米技术
背景情况:
- 石是各种工业应用中使用的微孔材料.
- 热液体水中的结构不稳定性限制了热的应用.
- 缺少-氧键被认为是这种不稳定的主要原因.
研究的目的:
- 调查与氧结合缺陷在石不稳定中的作用.
- 开发一种在热液体水中增强热岩结构稳定性的方法.
- 为了证明缺陷上限的有效性.
主要方法:
- 用三甲基西兰治疗酸乙,以封闭氧键缺陷.
- 使用 (29) Si-MAS NMR,传输电子显微镜 (TEM) 和X射线衍射 (XRD) 的表征.
- 使用吸附同热剂评估吸附能力和微孔性.
主要成果:
- 选择性封闭缺失的-氧键极大地提高了结构稳定性.
- 导致毛孔堵塞的水解和二氧化溶解在很大程度上得到缓解.
- 经过长时间的热水暴露后,修改过的热石保持了微孔性,吸附能力和远程秩序.
结论:
- 缺少的-氧键是热液水中热石不稳定的根本原因.
- 用三甲基西兰封闭缺陷有效地稳定化物.
- 这种处理保留了材料的基本特性,使其在水环境中得到更广泛的应用.
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