氟
氟化氢
化学
试剂
氟化物
硫酸
硫黄
无机化学
有机化学
作者
Calum Patel,Emy André‐Joyaux,Jamie A. Leitch,Xabier Martínez de Irujo-Labalde,Francesco Ibba,Job J. C. Struijs,Mathias A. Ellwanger,Robert S. Paton,Duncan L. Browne,Gabriele Pupo,Simon Aldridge,Michael A. Hayward,Véronique Gouverneur
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2023-07-20
卷期号:381 (6655): 302-306
被引量:28
标识
DOI:10.1126/science.adi1557
摘要
All fluorochemicals-including elemental fluorine and nucleophilic, electrophilic, and radical fluorinating reagents-are prepared from hydrogen fluoride (HF). This highly toxic and corrosive gas is produced by the reaction of acid-grade fluorspar (>97% CaF2) with sulfuric acid under harsh conditions. The use of fluorspar to produce fluorochemicals via a process that bypasses HF is highly desirable but remains an unsolved problem because of the prohibitive insolubility of CaF2. Inspired by calcium phosphate biomineralization, we herein disclose a protocol of treating acid-grade fluorspar with dipotassium hydrogen phosphate (K2HPO4) under mechanochemical conditions. The process affords a solid composed of crystalline K3(HPO4)F and K2-xCay(PO3F)a(PO4)b, which is found suitable for forging sulfur-fluorine and carbon-fluorine bonds.
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