内江师范学院学报
內江師範學院學報
내강사범학원학보
JOURNAL OF NEIJIANG TEACHERS COLLEGE
2012年
6期
37-41
,共5页
许肖云%梁兵%陈丽萍%张凯%唐红军%王洁%覃钦晏
許肖雲%樑兵%陳麗萍%張凱%唐紅軍%王潔%覃欽晏
허초운%량병%진려평%장개%당홍군%왕길%담흠안
碳酸钙%晶须%文石型%形貌
碳痠鈣%晶鬚%文石型%形貌
탄산개%정수%문석형%형모
calcium carbonate%whiskers%aragonite%morphology
研究了在MgCl2-Ca(OH)2--CO2体系中,气液法制备碳酸钙晶须的形貌和影响条件.结果显示,在此条件下制备的是具有较好形貌和高长径比,且分布均一的文石型碳酸钙晶须,并利用扫描电镜(SEM)、X-射线粉末衍射(PXRD)和傅里叶转换红外(FT—IR)光谱图等手段对其进行了表征.其最佳制备工艺为:反应温度为80℃,CO2的流量为5mL/min,搅拌速度为250r/min,MgCl2溶液浓度为0.4mol/L.
研究瞭在MgCl2-Ca(OH)2--CO2體繫中,氣液法製備碳痠鈣晶鬚的形貌和影響條件.結果顯示,在此條件下製備的是具有較好形貌和高長徑比,且分佈均一的文石型碳痠鈣晶鬚,併利用掃描電鏡(SEM)、X-射線粉末衍射(PXRD)和傅裏葉轉換紅外(FT—IR)光譜圖等手段對其進行瞭錶徵.其最佳製備工藝為:反應溫度為80℃,CO2的流量為5mL/min,攪拌速度為250r/min,MgCl2溶液濃度為0.4mol/L.
연구료재MgCl2-Ca(OH)2--CO2체계중,기액법제비탄산개정수적형모화영향조건.결과현시,재차조건하제비적시구유교호형모화고장경비,차분포균일적문석형탄산개정수,병이용소묘전경(SEM)、X-사선분말연사(PXRD)화부리협전환홍외(FT—IR)광보도등수단대기진행료표정.기최가제비공예위:반응온도위80℃,CO2적류량위5mL/min,교반속도위250r/min,MgCl2용액농도위0.4mol/L.
The morphology and influencing factors of CaCO3 crystal whiskers were investigated by means of gas-liquid method in the system of MgCl2-Ca(OH)2-CO2. The results indicate that the aragonite calcium carbonate (CaCO3) crystals thus prepared are characteristic of a nice external form with a rather satisfactory high aspect ratio and evenly-distributed whiskers. The CaCO3 crystals were then characterized by scanning electron microscopy (SEM), powder X-ray diffraction (PXRD) and Fourier transform infrared (FT-IR) spectroscopy. The optimum :reaction conditions of them are as follows: reaction temperature is at 80 ℃, CO2 flow rate is 5 mL/min, stirring speed is 250 r/min, and concentration of MgCl2 is 0.4 mol/L.