公开(公告)号：US20150239808A1

公开(公告)日：2015-08-27

申请号：US14695210

申请日：2015-04-24

申请人： Pierre-Marie SEDAT ,  Jean-Michel BOSSOUTROT

发明人： Pierre-Marie SEDAT ,  Jean-Michel BOSSOUTROT

IPC分类号： C07C17/25

CPC分类号： C07C17/25 ,  B01J19/0066 ,  B01J19/18 ,  B01J2219/00761 ,  C07C17/383 ,  C07C21/18

摘要： The subject of the invention is a process for the preparation of fluoroolefin compounds. It relates more particularly to a process for manufacturing a (hydro)fluoroolefin compound comprising (i) bringing at least one compound comprising from three to six carbon atoms, at least two fluorine atoms and at least one hydrogen atom, provided that at least one hydrogen atom and one fluorine atom are located on adjacent carbon atoms, into contact with potassium hydroxide in a stirred reactor, containing an aqueous reaction medium, equipped with at least one inlet for the reactants and with at least one outlet, in order to give the (hydro)fluoroolefin compound, which is separated from the reaction medium in gaseous form, and potassium fluoride, (ii) bringing the potassium fluoride formed in (i) into contact, in an aqueous medium, with calcium hydroxide in order to give potassium hydroxide and to precipitate calcium fluoride, (iii) separation of the calcium fluoride precipitated in step (ii) from the reaction medium and (iv) optionally, the reaction medium is recycled after optional adjustment of the potassium hydroxide concentration to step (i).

摘要翻译： 本发明的主题是制备氟烯烃化合物的方法。 本发明更具体地涉及一种制备（氢）氟代烯烃化合物的方法，其包括（i）使至少一种包含3至6个碳原子的化合物，至少2个氟原子和至少1个氢原子，条件是至少一个氢 原子和一个氟原子位于相邻碳原子上，在搅拌反应器中与氢氧化钾接触，该反应器含有反应物的至少一个入口和至少一个出口，该反应介质装有水性反应介质，以使（ 氢化）氟化烯烃化合物和氟化钾，（ii）使（i）中形成的氟化钾在水性介质中与氢氧化钙接触以产生氢氧化钾和 以沉淀氟化钙，（iii）将步骤（ii）中沉淀的氟化钙与反应介质分离，以及（iv）任选地，将反应介质在任选的 将氢氧化钾浓度调节至步骤（i）。