Ethylene glycol-assisted formaldehyde reduction of styrene-divinylbenzene loaded with Pt as an efficient catalyst for liquid-phase hydrogen isotopes catalytic exchange

IF 2.5 4区化学 Q2 Engineering

Chemical Papers Pub Date : 2025-06-06 DOI:10.1007/s11696-025-04109-1

Kun Fu, Xilongju Xu, Lei Zhu, Cailin Liu, Xianyan Ren, Haijun Yang, Shudong Lin

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Abstract

Pt/SDB is one of the promising catalysts used in liquid-phase catalytic exchange (LPCE) reaction to treat the tritium-containing wastewater produced by nuclear power generation. Mesoporous polystyrene-divinylbenzene (SDB) was prepared by suspension polymerization. With ethylene glycol and formaldehyde as reducing agents, a mild reduction method was developed to prepare the SDB-supported platinum (Pt) active particles, which was given as Pt/SDB-EG-PA. The structural morphology and catalytic activity were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), nitrogen adsorption desorption, and hydrogen-water catalytic exchange experiments. The results show that the Pt/SDB-EG-PA hydrophobic catalyst has outstanding performance and excellent catalytic activity: The average particle size of platinum nanoparticles is about 2.5 nm, the proportion of Pt⁰ components is 61.5%, and the catalytic exchange column efficiency reaches about 82.0% and remains stable within 160 min. This study provides a new strategy for the preparation of Pt/SDB hydrophobic catalysts by low temperature reduction.

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载铂苯乙烯-二乙烯苯的乙二醇辅助甲醛还原作为液相氢同位素催化交换的高效催化剂

Pt/SDB是一种很有前途的催化剂，可用于处理核电废水的液相催化交换（LPCE）反应。采用悬浮聚合法制备了介孔聚苯二乙烯（SDB）。以乙二醇和甲醛为还原剂，采用温和还原法制备了sds负载铂（Pt）活性粒子，命名为Pt/SDB-EG-PA。采用x射线衍射（XRD）、扫描电镜（SEM）、透射电镜（TEM）、氮气吸附解吸、氢水催化交换等实验对其结构形态和催化活性进行了表征。结果表明，Pt/SDB-EG-PA疏水催化剂具有突出的性能和优异的催化活性：铂纳米颗粒的平均粒径约为2.5 nm， Pt0组分的比例为61.5%，催化交换柱效率达到82.0%左右，并在160 min内保持稳定。本研究为低温还原法制备Pt/SDB疏水催化剂提供了新的思路。

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来源期刊

Chemical Papers Chemical Engineering-General Chemical Engineering

CiteScore

3.30

自引率

4.50%

发文量

590

期刊介绍： Chemical Papers is a peer-reviewed, international journal devoted to basic and applied chemical research. It has a broad scope covering the chemical sciences, but favors interdisciplinary research and studies that bring chemistry together with other disciplines.