白云石锻粉制备碱式氯化镁纳米线的研究

doi:10.3724/SP.J.1077.2011.10535

无机材料学报 ›› 2011, Vol. 26 ›› Issue (2): 214-218.DOI: 10.3724/SP.J.1077.2011.10535 CSTR: 32189.14.SP.J.1077.2011.10535

白云石锻粉制备碱式氯化镁纳米线的研究

陈雪刚 ¹ , 吕双双 ² , 李秀悌 ¹ , 张路 ¹ , 张平萍 ³ , 叶瑛 ¹

1. 浙江大学海洋科学与工程学系,杭州310028; 2. 浙江省地质矿产研究所非金属研究室,杭州310007; 3. 国家海洋局第二研究所, 杭州310012

收稿日期:2010-08-18 修回日期:2010-09-15 出版日期:2011-02-20 网络出版日期:2011-01-21
作者简介:BiographyCHEN Xue-Gang(1983-), male, PhD. E-mail:chenxg83@gmail:.com

Preparation of Magnesium Hydroxide Chloride Hydrate Nanowires Using Calcined Dolomite

CHEN Xue-Gang¹, L? Shuang-Shuang², LI Xiu-Ti¹, ZHANG Lu¹, ZHANG Ping-Ping³, YE Ying¹

1. Department of OceanScience and Engineering,Zhejiang University ,Hangzhou 310028, China;2. Department of Nonmetallic research, Zhejiang Institute of Geology andMineral Resources,Hangzhou310007, China; 3.Laboratory of Submarine Geosciences,Second Institute of Oceanography, State Oceanic Administration,Hangzhou310012, China

Received:2010-08-18 Revised:2010-09-15 Published:2011-02-20 Online:2011-01-21
Supported by:
Natural Science Fund of Ningbo, Zhejiang Province (2008B10036) ； Fundamental Research Funds for the Central Universities

摘要/Abstract

摘要： 碱式氯化镁(MHCH)纳米线是一种重要的高分子填充剂及一维纳米结构的前驱体. 本文以白云岩锻粉为原料, 利用水热反应制备了MHCH纳米线. 通过XRD、SEM和FT-IR表征表明所制备的MHCH是完好结晶的Mg₁₀(OH)₁₈Cl₂·5H₂O纳米线, 其直径和长度分别为50~120 nm和数十微米. TG-DTA测试表明, MHCH的热分解分为两步, 在加热过程中MHCH始终处于吸热状态. 白云石锻粉中的MgO和CaO与氯化镁的摩尔比 R 对MHCH的结构和形貌具有重要的影响MHCH的长径比随 R 的增大而减小, 而当 R 大于0.5时, 体系中将出现Mg(OH)₂; 制备MHCH的最佳摩尔比 R 在0.025和0.075之间. 由于MHCH用途广泛, 本研究将拓宽白云石的潜在应用价值.

关键词: 白云石锻粉, 碱式氯化镁(MHCH), 纳米线, 氯化镁, 水热

Abstract: Magnesiumhydroxide chloride hydrate (MHCH) nanowires are important polymer fillers andprecursors for one-dimensional nanostructures. Here a novel method waspresented to prepareMHCH nanowires using calcined dolomite as raw materials viaa hydrothermal approach. XRD, SEM, and FT-IR analyses indicate that theas-prepared MHCH is well crystallized Mg₁₀(OH)₁₈Cl₂?5H₂Onanowires with diameters of 50-120nm and length of several tens micrometers. The TG-DTA patterns of MHCH consistedof two steps and MHCH is at endothermic status during the whole heatingprocess. The molar ratio of (MgO+CaO) in calcined dolomite to MgCl₂( R) plays a key role to the structureand morphology of MHCH. The aspect ratio of MHCH nanowires decreases with theincreasing of R and Mg(OH)₂will be formed when R was greaterthan 0.5. The optimum R to prepareMHCH is between 0.025 and 0.075. This study will extend the potential applicationsof dolomite due to the extensive applications of MHCH.

Key words: calcined dolomite, m agnesium hydroxide chloride hydrate(MHCH), nanowire, magnesium chloride, hydrothermal

中图分类号:

TB321

陈雪刚 , 吕双双 , 李秀悌 , 张路 , 张平萍 , 叶瑛. 白云石锻粉制备碱式氯化镁纳米线的研究[J]. 无机材料学报, 2011, 26(2): 214-218.

CHEN Xue-Gang, L? Shuang-Shuang, LI Xiu-Ti, ZHANG Lu, ZHANG Ping-Ping, YE Ying. Preparation of Magnesium Hydroxide Chloride Hydrate Nanowires Using Calcined Dolomite[J]. Journal of Inorganic Materials, 2011, 26(2): 214-218.

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白云石锻粉制备碱式氯化镁纳米线的研究

Preparation of Magnesium Hydroxide Chloride Hydrate Nanowires Using Calcined Dolomite

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