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堿式氯化鎂晶須的水熱制備及熱分解機(jī)理研究
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天津海水淡化研究所

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基金項(xiàng)目:

國家自然科學(xué)基金面上項(xiàng)目（21276055）；國家海洋局青年海洋科學(xué)基金資助項(xiàng)目（2012553）；中央級(jí)公益性科研院所基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金項(xiàng)目（K-JBYWF-2011-G22）；中央級(jí)公益性科研院所基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金項(xiàng)目（K-JBYWF-2013-G9）


Hydrothermal synthesis and thermal decomposition mechanism of basic magnesium chloride whiskers
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Department of Utilizing Chemical Resource from Seawater

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the National High Technology Research and Development Program of China (2011AA03A408)

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    摘要:

    采用水熱法以鹽場鹵水、氫氧化鈉為原料制備了堿式氯化鎂晶須。通過SEM和SAED觀察樣品的顯微形貌及晶體結(jié)構(gòu)，晶須長度150μm以上，直徑0.5-1μm，為單晶物質(zhì)。通過XRD測定樣品的晶相結(jié)構(gòu)，產(chǎn)物為堿式氯化鎂9Mg(OH)2?MgCl2?5H2O。通過紅外光譜考察了不同鎂離子濃度產(chǎn)物官能團(tuán)的不同。升溫速率為2-5℃/min，高溫程序煅燒前驅(qū)體堿式氯化鎂，制備出氧化鎂晶須，很好的保持了堿式氯化鎂晶須的形貌，仍為單晶物質(zhì)，并推測了其可能的熱分解的機(jī)理過程。

    Abstract:

    Basic magnesium chloride whiskers were prepared with saltworks brine and Sodium Hydroxide as starting raw. Morphology and crystal Structure of products were investigated by SEM and SAED. The whiskers were single crystal material with the average Diameter of 0.5-1μm and length of more than 150μm. Crystalline structure of the samples were characterized by XRD, and product is 9Mg(OH)2?MgCl2?5H2O. It’s functional groups of different magnesium ion concentration were investigated by FT-IR. Magnesium oxide whiskers were program calcinated high temperature at heating rate of 2-5℃/min, Keeping the morphology and single crystal structure of magnesium oxide whiskers well. The possible mechanism of thermal decomposition process was speculated also.

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路紹琰.堿式氯化鎂晶須的水熱制備及熱分解機(jī)理研究[J].稀有金屬材料與工程,2016,45(2):482~486.[lushaoyan. Hydrothermal synthesis and thermal decomposition mechanism of basic magnesium chloride whiskers[J]. Rare Metal Materials and Engineering,2016,45(2):482~486.]
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  • 收稿日期:2014-03-26
  • 最后修改日期:2014-07-08
  • 錄用日期:2014-07-28
  • 在線發(fā)布日期: 2016-07-19
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