用于绿色储氢的高孔共价有机框架的合成

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-02-13 DOI:10.1016/j.jtice.2025.106005

Amani Chrouda , Chaker Briki , Khalifa Slimi , Abdelmajid Jemni , Mohsen Ahmadipour

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引用次数: 0

摘要

氢是一种在自然界中普遍存在的清洁能源。作为一种替代能源，氢作为一种绿色燃料被证明是非常有价值的。氢燃料电池进一步提高了汽车的效率。氢作为一种能源广泛使用的主要障碍之一是其安全和有效的储存。由于其固有的特性，COF-MTF作为一个新家族脱颖而出，表现出显著的灵活性和多孔结构，使其成为储氢和清洁能源应用的通用材料。方法基于三聚氰胺-对苯二甲酸乙二醛（COF-MTF）的新型共价有机骨架材料，用于高效可持续储氢。以三聚氰胺和对苯二甲酸乙二醛为原料，通过席夫碱直接反应制备了COF-MTF。利用热重分析（TGA）、傅里叶变换红外光谱（FTIR）、扫描电镜（SEM）和布鲁诺尔-埃米特-泰勒（BET）表面积分析等多种技术对样品进行了表征。合成的COF-MTF网络显示出显著的BET表面积为1986 m².g-1。在298 K和25 atm条件下，吸附热值为28.7 ~ 33.5 kJ/mol，最大吸收率为171 mg (N2)/g。经过多次循环对H2气体的吸附，COF-MTF表现出优异的吸附剂稳定性，在10次循环后仍能保持99.9%以上的吸附量。计算得到COF-MTF化合物吸附氢的等容热为8.447 KJ.mol−1。由于COF-MTF具有较高的氢气吸收率，因此该研究强调了COF-MTF是推进绿色储氢技术以实现可持续发展目标（sdg）的有希望的候选国。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Synthesis of highly porous covalent organic frameworks for green hydrogen storage applications

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Synthesis of highly porous covalent organic frameworks for green hydrogen storage applications

Background

Hydrogen is a clean energy source that is commonly available in the natural world. As an alternative energy option, hydrogen proves exceptionally valuable as green fuel. Hydrogen fuel cells further contribute to unprecedented vehicle efficiencies. One of the main obstacles to hydrogen's widespread use as an energy source is its safe and effective storage. Because of their intrinsic characteristics, COF-MTF stands out as a new family exhibit notable flexibility and a porous structure making them versatile for hydrogen storage and clean energy applications.

Methods

This study aimed to develop an innovative Covalent Organic Framework based on melamine-terephthalaldehyde (COF-MTF) for efficient and sustainable hydrogen storage. The COF-MTF was prepared by directly reacting melamine with terephthalaldehyde through a schiff base reaction. Characterization of the sample was conducted using various techniques, including thermogravimetric analysis (TGA), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET) surface area analysis.

Significant findings

The synthesized COF-MTF networks demonstrated a significant BET surface area of 1986 m².g^-1. It demonstrated notable isosteric heat of adsorption values between 28.7 and 33.5 kJ/mol and achieved a maximum N₂ uptake of 171 mg (N₂)/g at 298 K and 25 atm. Subjected to repeated cycles of H₂ gas adsorption, COF-MTF highlighted exceptional adsorbent stability, maintaining over 99.9 % of its adsorption capacity after 10 cycles. The calculated isosteric heat of hydrogen adsorption by the COF-MTF compound equals 8.447 KJ.mol⁻¹. With relatively high H₂ uptake, this study highlighted COF-MTF as a promising candidate for advancing green hydrogen storage technologies to achieve sustainable development goals (SDGs).

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.