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相关概念视频

Solvents01:12

Solvents

A solvent is a substance, most often a liquid, that can dissolve other substances. Here, the substance being dissolved is called a solute. When a solvent and a solute combine, they form a solution - a homogenous mixture of both the solvent and the solute. Water is a universal biological solvent. Its polar structure allows it to dissolve many other polar compounds. The ability of water to dissolve is governed by a balance between water molecules binding to each other and binding to the solute.
A...
Solid–Solid Solutions01:24

Solid–Solid Solutions

The temperature-composition phase diagram of two solids, A and B, which are immiscible in the solid phase but form miscible liquids, shows that when the temperature is low, these two exist as separate, pure solids (A and B). As the temperature increases, they transition into a single-phase liquid solution where A and B coexist. Moving from point a1 to a2 in the phase diagram, the composition changes such that solid B begins to separate from the solution, enriching the remaining liquid with A.

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相关实验视频

Updated: Jun 24, 2026

Synthesis of a Water-soluble Metal–Organic Complex Array
06:40

Synthesis of a Water-soluble Metal–Organic Complex Array

Published on: October 8, 2016

陶通过溶液-溶液-凝路线进行陶.

R Roy

    Science (New York, N.Y.)
    |December 18, 1987
    PubMed
    概括

    使用溶液混合和凝的sol-gel工艺,产生高度均的玻璃和陶. 最近的进展集中在施色凝前体上,以改善材料性能和应用.

    科学领域:

    • 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.
    • 纳米技术 纳米技术

    背景情况:

    • 30多年前开发的溶液-溶液-凝路径,利用有机和无机前体进行材料合成.
    • 这种技术导致了核燃料,陶,涂料和磨料的重要技术.

    研究的目的:

    • 为了回顾sol-gel过程的历史发展.
    • 要总结目前的研究,重点是新型的凝前体.
    • 突出克塞罗凝的组成和结构异质性的好处.

    主要方法:

    • 溶液混合,然后进行凝.
    • 开发用于 xerogel 前体合成的新工艺.
    • 材料组成和结构的表征.

    主要成果:

    • 超均的玻璃和陶是通过sol-gel路径生产的.
    • 新的工艺产生了具有增强异质性的异凝前体.
    • 纳米复合物谢洛格尔在烧结,微观结构和形态控制方面具有优势.

    结论:

    • 溶凝工艺仍然是先进材料开发的重要技术.

    更多相关视频

    Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
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    Published on: October 18, 2019

    A Synthetic Methodology for Preparing Impregnated and Grafted Amine-Based Silica Composites for Carbon Capture
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    A Synthetic Methodology for Preparing Impregnated and Grafted Amine-Based Silica Composites for Carbon Capture

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    相关实验视频

    Last Updated: Jun 24, 2026

    Synthesis of a Water-soluble Metal–Organic Complex Array
    06:40

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    Published on: October 8, 2016

    Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
    09:37

    Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry

    Published on: October 18, 2019

    A Synthetic Methodology for Preparing Impregnated and Grafted Amine-Based Silica Composites for Carbon Capture
    08:00

    A Synthetic Methodology for Preparing Impregnated and Grafted Amine-Based Silica Composites for Carbon Capture

    Published on: September 29, 2023

  • 不同质的凝前体是优化材料性能的关键.
  • 持续的研究有望在sol-gel衍生材料方面进一步创新.