合肥工业大学学报(自然科学版)
閤肥工業大學學報(自然科學版)
합비공업대학학보(자연과학판)
JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY(NATURAL SCIENCE)
2014年
3期
338-342
,共5页
杨保俊%刘磊%何晓婷%王百年
楊保俊%劉磊%何曉婷%王百年
양보준%류뢰%하효정%왕백년
氧化钙%相转移%碳化%轻质碳酸钙
氧化鈣%相轉移%碳化%輕質碳痠鈣
양화개%상전이%탄화%경질탄산개
calcium oxide%phase transfer%carbonization%light calcium carbonate
文章以氧化钙为原料,采用相转移-碳化法制备轻质碳酸钙。通过单因素条件实验和正交实验,考察了相转移剂与钙离子的摩尔比、钙离子浓度、碳化温度及碳化时间等工艺条件对碳酸钙产率的影响,记录了反应过程中体系pH值的变化,所确定较适宜的相转移-碳化反应工艺条件为:相转移剂与钙离子的摩尔比为4∶1、氧化钙浓度为0.5 mol/L、碳化温度为60℃、碳化时间为2.5 h ,该条件下纳米碳酸钙的产率平均值为96.3%;采用XRD、TEM、FESEM、粒度分析和红外光谱等对所制得的纳米碳酸钙样品进行表征。
文章以氧化鈣為原料,採用相轉移-碳化法製備輕質碳痠鈣。通過單因素條件實驗和正交實驗,攷察瞭相轉移劑與鈣離子的摩爾比、鈣離子濃度、碳化溫度及碳化時間等工藝條件對碳痠鈣產率的影響,記錄瞭反應過程中體繫pH值的變化,所確定較適宜的相轉移-碳化反應工藝條件為:相轉移劑與鈣離子的摩爾比為4∶1、氧化鈣濃度為0.5 mol/L、碳化溫度為60℃、碳化時間為2.5 h ,該條件下納米碳痠鈣的產率平均值為96.3%;採用XRD、TEM、FESEM、粒度分析和紅外光譜等對所製得的納米碳痠鈣樣品進行錶徵。
문장이양화개위원료,채용상전이-탄화법제비경질탄산개。통과단인소조건실험화정교실험,고찰료상전이제여개리자적마이비、개리자농도、탄화온도급탄화시간등공예조건대탄산개산솔적영향,기록료반응과정중체계pH치적변화,소학정교괄의적상전이-탄화반응공예조건위:상전이제여개리자적마이비위4∶1、양화개농도위0.5 mol/L、탄화온도위60℃、탄화시간위2.5 h ,해조건하납미탄산개적산솔평균치위96.3%;채용XRD、TEM、FESEM、립도분석화홍외광보등대소제득적납미탄산개양품진행표정。
In this paper ,light calcium carbonate was prepared via the phase transfer and carbonization route ,using calcium oxide as the raw material .Taking the yield of the as-prepared calcium carbonate as the main index ,the carbonization conditions ,such as the ratio of phase transfer agent to calcium ion ,the concentration of calcium ion ,carbonization time and temperature ,were investigated by sin-gle-factor and orthogonal experiments .The change of the pH value in the process of reaction was ob-served .T he optimum conditions are obtained as follow s :the ratio of phase transfer agent to calcium ion is 4∶1 ,the concentration of calcium oxide is 0.5 mol/L ,the carbonization time is 2.5 h ,the car-bonization temperature is 60 ℃ .The average yield of the calcium carbonate under optimum reaction conditions can reach to 96.3% .The as-prepared light calcium carbonate was characterized by X-ray diffraction(XRD) ,transmission electron microscope (TEM ) ,field emission scanning electron micro-scope(FESEM ) ,laser particle size analyzer and Fourier transform infrared spectroscopy (FT-IR) .