Preparation of rodlike t-ZrO2 nanoparticles by two-step calcination of 1,12-diaminododecane-zirconia mesostructured composites

被引：15

作者：

Chen, FX

Zhu, KW

Huang, L

Chen, YX

Kooli, F

机构：

[1] Inst Chem & Engn Sci, Singapore 627833, Singapore

[2] SW Petr Inst, Chengdu 610500, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2006年 / 41卷 / 01期

关键词：

ceramics; thermogravimetric analysis (TGA); X-ray diffraction; phase transitions;

D O I：

10.1016/j.materresbull.2005.07.041

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Rodlike t-ZrO2 nanoparticles with aspect ratio of 1.3-8.0 and large surface area (152 m(2)/g) have been produced by two-step calcination of 1,12-diaminododecane-hydrous zirconia mesostructured composites. The two-step calcination consists of first calcination at 300 degrees C for 24 h and then at 400 degrees C for another 24 h. The resulting t-ZrO2 nanoparticles can be stored under ambient conditions for at least 2 months without discernible transformation to the monoclinic phase. Compared to one-step calcination at 400 degrees C, the two-step calcination increases the amount of hydrocarbon fragments (3.6 wt% versus 2.9 wt%) adsorbed onto the resulting t-ZrO2 nanoparticles. This increase may account for the improved phase stability of the rodlike t-ZrO2 nanoparticles. (C) 2005 Elsevier Ltd. All rights reserved.

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页码：10 / 18

页数：9

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