新型铂催化剂的合成及其在光活化氢硅烷化反应中的应用

IF 2.8 3区 材料科学 Q3 CHEMISTRY, PHYSICAL Silicon Pub Date : 2024-07-30 DOI:10.1007/s12633-024-03103-8
Weifu Zhang, Guo Jiang, Kai Liao
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引用次数: 0

摘要

光催化水硅化具有反应效率高和环保的优点。然而,光敏铂催化剂的成本非常高,阻碍了其应用。本研究合成了一种新型、高性价比的光敏铂催化剂,并能在紫外光下有效催化加氢硅烷化反应。研究发现,当氯化铂键与环戊二烯键(Pt-Cl:Cp)的比例大于 1:1.2 时,铂催化剂在紫外光下表现出催化活性。成本降低了 50%。傅立叶变换红外光谱和核磁共振技术对这种铂催化剂的结构进行了表征。在紫外光下,新型光敏铂催化剂的催化效率从约 5%提高到 60%。测量了制备的硅橡胶的粘度。结果表明,制备的硅橡胶在遮光环境下的储存时间超过 30 天,并可在紫外线照射下 2 分钟内完全固化。光固化硅橡胶产品的热分解残余质量高达 70%,具有良好的热稳定性。当铂催化剂的含量从 20ppm 增加到 100ppm 时,加氢硅烷化反应的转化率从 43% 增加到 60%。硅橡胶的硬度也从最初的 11 度增加到 20 度。这种新型光敏铂催化剂有望应用于三维打印和电子包装领域。
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Synthesis of a Novel Platinum Catalyst and Its Application in the Photoactivated Hydrosilylation Reaction

Photocatalyzed hydrosilication has the advantages of high reaction efficiency and environmental friendliness. However, the cost of photosensitive platinum catalysts is very high, hindering their applications. In this work, a novel and cost-effective photosensitive platinum catalyst is synthesized and can effectively catalyze the hydrosilylation reaction under ultraviolet light. It is found that Pt catalysts exhibit catalytic activity under ultraviolet light when the ratio of Platinum chloride bonding and cyclopentadienyl (Pt-Cl:Cp) is higher than 1:1.2. The cost is reduced by 50%. The structure of this platinum catalyst is characterized using FTIR and NMR techniques. Under ultraviolet light, the new photosensitive platinum catalyst’s catalytic efficiency increases from approximately 5% to 60%. The viscosity of prepared silicone rubber was measured. Results show that the prepared silicone rubber has a storing time of over 30 days in shaded environments, and can be completely cured within 2 min under ultraviolet light. The thermal decomposition residual mass of photocured silicone rubber products is as high as 70%, having good thermal stability. As the content of the platinum catalyst increases from 20 to 100 ppm, the reaction conversion rate of the hydrosilylation reaction increases from 43 to 60%. The hardness of the silicone rubber also increases from the initial 11 degrees to 20 degrees. This novel photosensitive platinum catalyst has potential applications in 3D printing and electronic packaging.

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来源期刊
Silicon
Silicon CHEMISTRY, PHYSICAL-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
5.90
自引率
20.60%
发文量
685
审稿时长
>12 weeks
期刊介绍: The journal Silicon is intended to serve all those involved in studying the role of silicon as an enabling element in materials science. There are no restrictions on disciplinary boundaries provided the focus is on silicon-based materials or adds significantly to the understanding of such materials. Accordingly, such contributions are welcome in the areas of inorganic and organic chemistry, physics, biology, engineering, nanoscience, environmental science, electronics and optoelectronics, and modeling and theory. Relevant silicon-based materials include, but are not limited to, semiconductors, polymers, composites, ceramics, glasses, coatings, resins, composites, small molecules, and thin films.
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