用于苯乙烯-丁二烯-苯乙烯（SBS）共聚物催化加氢的高效铂纳米颗粒装饰多壁碳纳米管（Pt/MWCNTs）催化剂

IF 5.3 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Arabian Journal of Chemistry Pub Date : 2024-09-05 DOI:10.1016/j.arabjc.2024.105983

Alaaddin M.M. Saeed , Gui-Ping Cao , Ahmed S. Al-Fatesh , Salwa B. Alreshaidan , Nawab Ali , Mustapha Sani Shehu , Jun-Yang Yan

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引用次数: 0

摘要

本研究介绍了铂纳米粒子装饰多壁碳纳米管（Pt/MWCNTs）催化剂的实际合成及其在苯乙烯-丁二烯-苯乙烯（SBS）三嵌段共聚物氢化中的新用途。在完全氢化苯乙烯-丁二烯-苯乙烯（SBS）三嵌段共聚物中的聚苯乙烯和聚丁二烯段时，Pt/MWCNTs 催化剂表现出显著的活性和选择性。表征结果表明，Pt/MWCNTs 催化剂具有分散良好的铂纳米颗粒，比表面积大（159.5501 m2/g）。此外，催化剂还具有介孔结构。因此，使用 Pt/MWCNTs 催化剂对 SBS 进行催化氢化时，氢化程度很高，在 9 小时后的 180 °C 温度下，对 SBS 三嵌段共聚物中聚苯乙烯和聚丁二烯嵌段的选择性达到 100%。同时，通过 GPC、傅立叶变换红外光谱、1H NMR、13C NMR 和 TG 对 SBS 和环状嵌段共聚物 (CBC) 进行了表征。这项研究开发了用于不饱和聚合物加氢的高活性和高选择性 Pt/MWCNTs 催化剂。

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Highly efficient platinum nano-particles decorated multi-walled carbon nanotubes (Pt/MWCNTs) catalyst for catalytic hydrogenation of styrene–butadiene–styrene (SBS) copolymer

This study presents the practical synthesis of platinum nanoparticle decorated multi-walled carbon nanotubes (Pt/MWCNTs) catalysts and their novel use in hydrogenating styrene–butadiene–styrene (SBS) triblock copolymers. The Pt/MWCNTs catalyst exhibited remarkable activity and selectivity in fully hydrogenating the polystyrene and polybutadiene segments within a styrene–butadiene–styrene (SBS) triblock copolymer. The characterizations proved that the Pt/MWCNTs catalyst possesses well-dispersed Pt nanoparticles with a large specific surface area (159.5501 m²/g). Additionally, the catalyst is with a mesoporous structure. As a result, the catalytic hydrogenation of SBS using a Pt/MWCNTs catalyst achieves a high degree of hydrogenation, with 100 % selectivity towards the polystyrene and polybutadiene blocks in the SBS triblock copolymer at 180 °C after 9 h. The Pt/MWCNTs catalyst was characterized via SEM, TEM, HRTEM, XRD, XPS, Raman, TG, and BET. Simultaneously, the SBS and cyclic block copolymer (CBC) were characterized via GPC, FTIR, ¹H NMR, ¹³C NMR, and TG. In this work, Pt/MWCNTs catalyst with high activity and selectivity is developed for unsaturated polymer hydrogenation.

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来源期刊

Arabian Journal of Chemistry CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

10.80

自引率

3.30%

发文量

763

审稿时长

63 days

期刊介绍： The Arabian Journal of Chemistry is an English language, peer-reviewed scholarly publication in the area of chemistry. The Arabian Journal of Chemistry publishes original papers, reviews and short reports on, but not limited to: inorganic, physical, organic, analytical and biochemistry. The Arabian Journal of Chemistry is issued by the Arab Union of Chemists and is published by King Saud University together with the Saudi Chemical Society in collaboration with Elsevier and is edited by an international group of eminent researchers.