[1]叶玲,戴劲草,肖子敬,等.交联蒙托石的表面酸性和热稳定性[J].华侨大学学报(自然科学版),2000,21(1):80-83.[doi:10.3969/j.issn.1000-5013.2000.01.017]
　Ye Ling,Dai Jingcao,Xiao Zijing,et al.Surface Acidity and Thermal Stability of Cross Linked Montmorillonite[J].Journal of Huaqiao University(Natural Science),2000,21(1):80-83.[doi:10.3969/j.issn.1000-5013.2000.01.017]
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交联蒙托石的表面酸性和热稳定性()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第21卷
期数:
2000年第1期
页码:
80-83
栏目:
出版日期:
2000-01-20

文章信息/Info

Title:
Surface Acidity and Thermal Stability of Cross Linked Montmorillonite
文章编号:
1000-5013(2000)01-0080-04
作者:
叶玲; 戴劲草; 肖子敬; 黄继泰
华侨大学化工学院, 泉州362011
Author(s):
Ye Ling;  Dai Jingcao;  Xiao Zijing;  Huang Jitai
College of Chem. Eng., Huaqiao Univ., 362011, Quanzhou
关键词:
蒙托石;  聚合羟基铝镍离子;  表面酸性;  热稳定性
Keywords:
montmorillonite;  hydroxy AlNi oligocations;  surface acidity;  thermal stability
分类号:
TQ426.61
DOI:
10.3969/j.issn.1000-5013.2000.01.017
摘要:
采用不同的方法和条件,把聚合羟基铝镍离子引入蒙托石层间 .利用 X射线衍射图、红外光谱图及非水溶液滴定法,研究制备方法及条件变化对蒙托石表面酸性及热稳定性的影响 .结果表明,不同的方法交联蒙托石,其表面酸性及热稳定性均发生较大的变化 .原因主要在于交联剂的形成方法及条件不同,导致生成不同结构的羟基铝镍聚合体 .同时,Al/ Ni,(Al+Ni) /土和老化温度等条件的变化对表面酸性,及热稳定性也有较大影响 .表面酸性主要与层间有效镍离子的含量相关,而结构羟基与蒙托石板层结合的牢固程度,决定交联蒙托石的热稳定性 .交联蒙托石在4 0 0℃以下,热稳定性较好 .
Abstract:
Hydroxy AlNi oligocations belong to inorganic macromolecular oligomers.The authors lead them onto interlaminar spaces of montmorillonite by adopting different methods and conditions; and study the effects of the change of preparing method and condition upon surface acidity and thermal stability of montmorillonite by using X ray diffractogram and infra red spectrogram and nonaqueous titration.The results show that the surface acidity and the thermal stability of montmorillonite change greatly after it is cross linked by different methods.The authors′ view on the main cause is presented as follows:The difference in method and condition for forming cross linking agent leads to the generation of different structural hydroxy Al/Ni oligocations; and moreover,the changes in such conditions as Al/Ni,(Al+Ni)/clay,and ageing temperature exert also fairly great influence upon surface acidity and thermal stability.Acids on the surface are correlated chiefly with the amount of interlamellar effective nickel cations,while thermal stability of cross linked montmorillonite depends upon the firmness of the binding between hydroxyl groups and basal layer of montmorillonite.Generally,the cross linked montorillonite shows a fairly good thermal stability up to 400℃

参考文献/References:

[1] Burch R. Pillared clays [J]. Catalysis Today, 1988(2):185-185.doi:10.1016/0920-5861(88)85001-6.
[2] Lahav N, Shani U, Shabtai J. Cross-linked smectites.(I)Synthesis and properties of hydroxy-alumium-montmorillonite [J]. Clays and Clay Minerals, 1978(2):107-115.doi:10.1346/CCMN.1978.0260205.
[3] 赵东源, 杨亚书, 郭燮贤. 混合金属络合物羟基镍铝交联蒙托石的合成 [J]. 催化学报, 1993(2):107-113.
[4] 肖子敬, 黄继泰, 戴劲草. 采用吸附等温线法测定改性粘土表面酸总酸度 [J]. 华侨大学学报(自然科学版), 1997(2):146-150.
[5] 王连波, 项斯芬, 章捷. 羟基镍铝交联蒙托石表面酸性研究 [J]. 北京大学学报(自然科学版), 1991(4):424-429.

相似文献/References:

[1]叶玲,黄继泰,肖子敬,等.用离子交换技术调控蒙托石的表面酸性[J].华侨大学学报(自然科学版),1997,18(3):251.[doi:10.11830/ISSN.1000-5013.1997.03.0251]
　Ye Ling,Huang Jitai,Xiao Zhijing,et al.Regulating the Surface Acidic Property of Montmorillonite by Ion Exchange Technique[J].Journal of Huaqiao University(Natural Science),1997,18(1):251.[doi:10.11830/ISSN.1000-5013.1997.03.0251]

备注/Memo

备注/Memo:
国家自然科学基金; 福建省自然科学基金资助项目
更新日期/Last Update: 2014-03-23