The emergence of metal–organic frameworks (MOFs) as potential candidates to supplant existing adsorbent types in real-world applications has led to an explosive growth in the number of compounds available to researchers, as well as in the diversity of the metal salts and organic linkers from which they are derived. In this context, the use of carbonate-based precursors as metal sources is of interest
Mechanochemical Synthesis and Characterization of Alkaline Earth Metal Terephthalates:<i>M</i>(C<sub>8</sub>H<sub>4</sub>O<sub>4</sub>)·<i>n</i>H<sub>2</sub>O (<i>M</i>= Ca, Sr, Ba)
The mechanochemicalsynthesis offers an easy access to obtain alkalineearthmetalterephthalatesM(C8H4O4)·nH2O (M = Ca, Sr, Ba). In the presented study we describe for the first time the mechanochemicalsynthesis of powders of Ca(C8H4O4)·3H2O, Ca(C8H4O4), Sr(C8H4O4)·H2O, and Ba(C8H4O4), which so far were only synthesized as single crystals from aqueous solutions or by reactions in an autoclave. Furthermore
机械化学合成提供了一种容易获得碱土金属对苯二甲酸盐 M(C8H4O4)·n (M = Ca, Sr, Ba) 的途径。在本研究中,我们首次描述了 Ca( )·3 、Ca( )、Sr( )·H2O 和 Ba( ) 粉末的机械化学合成,这些粉末迄今为止仅以单晶形式合成来自水溶液或通过高压釜中的反应。此外,制备了一种新的水合物 Ba( )·2(1.5) ,目前文献中没有描述过。所有化合物均通过 X 射线粉末衍射、热分析、元素分析、FT-IR 和 MAS NMR 光谱测量进行表征。
Toward sustainable syntheses of Ca-based MOFs
作者:Tom S. Crickmore、Haamidah Begum Sana、Hannah Mitchell、Molly Clark、Darren Bradshaw
DOI:10.1039/d1cc04032d
日期:——
We report the use of benign and green precursors including waste chicken eggshells and PET from recycled plastic bottles, for the facile synthesis of calcium-based metal–organic frameworks using sustainable synthesis techniques.
Hydrated and dehydrated Ca-coordination polymers based on benzene-dicarboxylates: mechanochemical synthesis, structure refinement, and spectroscopic characterization
mechanochemically by milling Ca(OH)2 with phthalic acid (H2oBDC), isophthalic acid (H2mBDC), and terephthalic acid (H2pBDC). The hydrated compounds [Ca(oBDC)(H2O)] (1), [Ca(mBDC)(H2O)3.4] (2), and [Ca(pBDC)(H2O)3] (3) were prepared for the first time via mechanochemical routes. The refined structures were validated by extended X-ray absorption data. The new dehydrated compound [Ca(oBDC)] (1-H2O), obtained
通过将Ca(OH)2与邻苯二甲酸(H 2 o BDC),间苯二甲酸(H 2 m BDC)和对苯二甲酸(H 2 p BDC)研磨,以机械化学方式制备了一系列基于Ca的配位聚合物。水合化合物[Ca(o BDC)(H 2 O)](1),[Ca(m BDC)(H 2 O)3.4 ](2)和[Ca(p BDC)(H 2 O)3 ] (3)是第一次准备通过机械化学路线。通过扩展的X射线吸收数据验证了精制结构。根据粉末X射线衍射(PXRD)从头开始确定新的脱水化合物[Ca(o BDC)](1 -H 2 O),该过程是从可逆相变过程中进行1的热后处理而获得的。数据。使用元素分析,热分析和光谱方法对材料进行了全面表征:魔术角旋转NMR和衰减全反射红外光谱。水合和脱水样品的比表面积和吸附特性使用气体吸附等温线和动态气相吸附测量值确定。