Facile recovery of terephthalic acid from PET bottles via acid hydrolysis with nitric acid and applications in synthesis of cobalt MOFs

IF 1.6 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Transition Metal Chemistry Pub Date : 2024-09-16 DOI:10.1007/s11243-024-00609-3

Victor Seabra, João M. R. Gonçalves, Ana L. S. Moura, Vinícius G. Luna, Pedro H. O. Santiago, Javier Ellena, Benedito S. Lima-Neto

引用次数: 0

Abstract

Poly(ethylene terephthalate) (PET) taken from postconsumer commercial water bottles was subjected to acid hydrolysis with HNO₃ to recover terephthalic acid (H₂TPA). The H₂TPA was submitted to mono-nitration with HNO₃/H₂SO₄ to produce 2-nitro-terephthalic acid (NO₂-H₂TPA) in good yield. Both compounds were well characterized by NMR (¹H; ¹³C; ¹H–¹³C HSQC). These two molecules were used as ligands for the syntheses of two new cobalt-based metal–organic frameworks (MOFs) via solvothermal methodology, in dimethylformamide (DMF) or dimethylacetamide (DMA). The MOFs Co-TPA-DMA (1) and Co-(NO₂-TPA)-DMF (2) were obtained and characterized by single-crystal X-ray diffraction (SCXRD), powder X-ray diffraction (PXRD) and scanning electron microscopy with energy-dispersive spectroscopy (SEM–EDS).

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通过硝酸酸水解从 PET 瓶中轻松回收对苯二甲酸及其在钴 MOFs 合成中的应用

用 HNO₃ 酸水解从消费后的商用水瓶中提取的聚对苯二甲酸乙二醇酯（PET），以回收对苯二甲酸（H₂TPA）。用 HNO₃/H2SO4 对 H₂TPA 进行单硝化，生成 2-硝基对苯二甲酸（NO₂-H₂TPA），收率很高。这两种化合物都具有良好的核磁共振（1H；13C；1H-13C HSQC）特征。这两种分子被用作配体，在二甲基甲酰胺（DMF）或二甲基乙酰胺（DMA）中通过溶热法合成了两种新的钴基金属有机框架（MOFs）。获得了 Co-TPA-DMA (1) 和 Co-(NO₂-TPA)-DMF (2)，并通过单晶 X 射线衍射 (SCXRD)、粉末 X 射线衍射 (PXRD) 和扫描电子显微镜与能量色散光谱 (SEM-EDS) 进行了表征。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Transition Metal Chemistry 化学-无机化学与核化学

CiteScore

3.60

自引率

0.00%

发文量

审稿时长

1.3 months

期刊介绍： Transition Metal Chemistry is an international journal designed to deal with all aspects of the subject embodied in the title: the preparation of transition metal-based molecular compounds of all kinds (including complexes of the Group 12 elements), their structural, physical, kinetic, catalytic and biological properties, their use in chemical synthesis as well as their application in the widest context, their role in naturally occurring systems etc. Manuscripts submitted to the journal should be of broad appeal to the readership and for this reason, papers which are confined to more specialised studies such as the measurement of solution phase equilibria or thermal decomposition studies, or papers which include extensive material on f-block elements, or papers dealing with non-molecular materials, will not normally be considered for publication. Work describing new ligands or coordination geometries must provide sufficient evidence for the confident assignment of structural formulae; this will usually take the form of one or more X-ray crystal structures.