本文以MgCl2·6H2O和NH4HCO3作为反应物料,采用低温液相合成法制备出三水碳酸镁晶须.考查了Mg2+初始浓度、NH4HCO3溶液的滴加速度、搅拌速度及表面活性剂种类等因素对三水碳酸镁晶须的长度及长径比的影响.研究结果表明:在Mg2+初始浓度为0.5 mol/L、NH4HCO3的滴加速度5 mL/min、搅拌速度为120 r/min、选用KH2PO4作表面活性剂的试验条件下,可以合成出长度325 μm、直径8.25 μm,长径比高达32的三水碳酸镁晶须产品.
参考文献
[1] | Freitag F;Kleinebudde P .How do roll compaction/dry granulation affect the tableting behaviour of inorganic materials? Comparison of four magnesium carbonates.[J].European journal of pharmaceutical sciences,2003(4):281-289. |
[2] | A. Botha;C. A. Strydom .Preparation of a magnesium hydroxy carbonate from magnesium hydroxide[J].Hydrometallurgy,2001(3):175-183. |
[3] | Kloprogge J T;Martens W N;Nothdurft L et al.Low Temperature Synthesis and Characterization of Nesquehonite[J].Journal of Materials Science,2003,22(11):825-829. |
[4] | Mitsuhashi K;Tagami N;Tanabe K;Ohkubo T;Sakai H;Koishi M;Abe M .Synthesis of microtubes with a surface of "house of cards" structure via needlelike particles and control of their pore size[J].Langmuir: The ACS Journal of Surfaces and Colloids,2005(8):3659-3663. |
[5] | Giester G;Gengauer C L;Rieek B .The Crystal Strueture of Nesquehonite,MgCO3 @3H2O,from Lavrion,Greeee[J].Mineralogy and Petrology,2000,70(3-4):153-163. |
[6] | 闫小星,李云飞,薛冬峰,晏成林,王雷.基于水合碳酸镁结晶过程的化学键分析[J].人工晶体学报,2007(05):991-999. |
[7] | 三觜幸平;田辺克幸;田上直树 .碱式碳酸镁及其制备方法和用途[P].日本专利:PCT/JP2003/001437,2003-2-12. |
[8] | 王万平,张懿.碳酸盐热解法制备氧化镁晶须[J].硅酸盐学报,2002(z1):93-95. |
[9] | X. Wang;D. Xue .Direct observation of the shape evolution of MgO whiskers in a solution system[J].Materials Letters,2006(25/26):3160-3164. |
[10] | 邵平平,李志宝,密建国.碳酸镁水合物在283-363 K范围内的晶体组成及晶型[J].过程工程学报,2009(03):520-525. |
[11] | 陈敏,李月圆,王健东,陈庆武,崔虹旭,申莹莹.利用菱镁矿制备碳酸镁晶须[J].硅酸盐学报,2009(10):1649-1653. |
[12] | Coleyshaw EE.;Crump G.;Griffith WP. .Vibrational spectra of the hydrated carbonate minerals ikaite, monohydrocalcite, lansfordite and nesquehonite[J].Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy,2003(10):2231-2239. |
[13] | 闫平科,田海山,高玉娟,王斌,马正先,梁帅.高长径比三水碳酸镁晶须的合成研究[J].人工晶体学报,2012(01):158-164. |
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