熊猫体育

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氟化盐的合成方法
- 2019-07-09-

        FUHUAJIASHIYIZHONGYAN,SUOYIYOUJIAOJIADEFUHUAYAN。HUAXUESHIWEIKF,FENZILIANGWEI58.10。WEIBAISEDANXIEJIEJINGHUOJIEJINGXINGFENMO,WEIXIAN,YIXISHI。RONGYUSHUI,BURONGYUYICHUN。QISHUIRONGYECHENGJIANXING,NENGFUSHIBOLIHECIQI。XIANGDUIMIDUWEI2.454,RONGDIANWEI858℃。

ZHUYAOYONGTU

        YONGYUBOLIDIAOKE、SHIWUFANGFU、DIANDU。KEYONGZUOHANJIEZHURONGJI、SHACHONGJI、YOUJIHUAHEWUDEFUHUAJI、CUIHUAJI、XISHOUJI(XISHOUHFHESHUIFEN)DENG。YESHIZHIQUFUHUAQINGJIADEYUANLIAO。2.YONGZUOFENXISHIJI、LUOHEWUXINGCHENGJI,JIYONGYUBOLIDIAOKEHESHIWUFANGFU,HAIYONGZUOSHACHONGJI、FUHUAJIDENG。

合成方法

        1.SHANGPINSHIJIFUHUAJIAYIBANWEI“WUSHUI”DE,DANSHIJISHANGHANYOUYIXIESHUI。JIANGZHEIZHONGFUHUAJIAMOCHENGXIFEN,ZAI180YI210℃DEHONGXIANGZHONGBAOCHI48XIAOSHI。.JIANGQICUNFANGYUGANZAOQIZHONG。YONGQIANJIANGFENZHUANGDEYANZAIZAI180℃GANZAO3XIAOSHI,ZAIREDE(50℃)BOLIYANBOZHONGZAICIMOXI。

        2.中和法在中和池内用等量水溶解固体氢氧化钾,然后通入无水氢氟酸(或40%氢氟酸)进行反应,至Ph=7~8时,停止通人无水氢氟酸,静止沉降24h,所得澄清液(含氟化钾40%左右)送至真空蒸发器进行真空浓缩(压力为79993 Pa)、待溶液中含有大部分结晶时,再经过滤(压力为0.2~0.3 Mpa)、真空干燥(压力为79993 Pa)6h,制得氟化钾成品。其反应方程式如下:

        3.由氟化氢钾热分解可得最纯的氟化钾。将氟化氢钾KHF2置于铂皿中,上面盖一个铂漏斗,在通风橱里加热使之分解,通过漏斗管急速吹入干燥的氮气,以带走产生的HF,纯的氟化钾则留在铂皿中。

        4.QINGFUSUANYUTANSUANJIAFANYINGYIZHIQUFUHUAJIAHEERSHUIFUHUAJIA。QU50g 46%DEQINGFUSUAN,ZHIYUJUYIXIDESHAOBEIZHONG,JIARU26gSHUI,SHIXISHIZHIYUE30%,ZAIJIAOBANXIAHUANHUANJIARUYUE79gTANSUANJIA(BUHANLVLIZI),SHIRONGYECHENGRUOSUANXING。JIANGRONGYETONGGUOHUOXINGTANGUOLV。LVYEZAIBOMINHUOYINZHIZHENGFAMINZHONGZHENGFACHUQUBUFENSHUIFEN,LENGQUEHOU,KF·2H2OCHENGHUZHUANGJIEJINGXICHU。YONGBOLOUDOUXILV,JIEJINGFANGZAILVZHIJIACENGZHONG,ZHENKONGHONGXIANGTUOSHUI(40℃)。BUNENGSHIQIRONGRONG(RONGDIAN46℃)。YOUERSHUIHEWUTUOSHUIKEDEWUSHUIFUHUAJIA。