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相关概念视频

Hybridization of Atomic Orbitals I03:24

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The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
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Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
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相关实验视频

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Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
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高连接的第三级金属有机框架平台:合成,结构和甲储存能力

Jie Zhou1, Ya-Nan Ma1, Yu-Feng Zhang2

  • 1Shaanxi Key Laboratory of New Concept Sensors and Molecular Materials, Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China.

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|June 11, 2025
PubMed
概括
此摘要是机器生成的。

研究人员开发了一种新型的金属有机框架 (MOF) 以有效地储存甲. 这种新材料克服了重力测量和体积测量能力之间的权衡,为天然气车辆提供了高性能.

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科学领域:

  • 材料科学
  • 化学学
  • 化学工程

背景情况:

  • 在单一的金属有机框架 (MOF) 中储存高重度和体积的甲对于天然气车辆至关重要.
  • 在多孔材料中,通常存在重量计和体积计甲吸附能力之间的权衡.

研究的目的:

  • 设计和合成一种能够同时储存高重度和体积甲的新型MOF平台.
  • 克服现有的多孔材料内在的甲储存能力的局限性.

主要方法:

  • 合成一种新型的胺-碳酸连接体,并与三元铁和二碳酸连接剂结合.
  • 使用双溶剂和双调节器溶热方法建造一个9C三元MOF平台.
  • 通过多步溶剂交换和超临界CO2干燥激活MOF,然后进行高压甲吸附试验.

主要成果:

  • 一系列具有 ncb 型拓网络和双孔层次的 MOF 已成功合成.
  • 激活材料具有高孔径 (孔径 > 1.90 cm3 g-1),表面积 (重量计 > 4800 m2 g-1 ,体积计 > 1600 m2 cm-3).
  • Fe-ncb-TPDC-II MOF 在 273 K 和 80 bar 的温度下实现了 0.533 g g−1 (重力) 和 232 cm3 (STP) cm−3 (体积) 的异常甲储存容量.

结论:

  • 开发的MOF平台有效地解决了存储甲的重力度和体积的权衡问题.
  • 与其他多孔材料相比,Fe-ncb-TPDC-II MOF 在类似条件下表现出更高的性能.
  • 这种进步为天然气作为汽车燃料的实际应用带来了巨大的潜力.