Thermal treatment of moolooite

R. L. Frost; K. Erickson; M. Weier

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Thermal treatment of moolooite

机译：Thermal treatment of moolooite

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Evidence for the existence of primitive life forms such as lichens and fungi can be based upon the formation of oxalates. These oxalates form as a film like deposit on rocks and other host matrices. Moolooite as the natural copper(II) oxalate mineral is a classic example. High resolution thermogravimetry coupled to evolved gas mass spectrometry shows decomposition takes place at 260 ℃. Evolved gas mass spectrometry shows the gas lost at this temperature is carbon dioxide. No water evolution was observed, thus indicating the moolooite is the anhydrous copper(II) oxalate as compared to the synthetic compound which is the dihydrate. The high resolution thermogravimetry was complimented with hot stage Raman spectroscopy. The temperature at which no intensity remains in the bands assigned to the oxalate vibrations is the upper limit of the stability of the moolooite.

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来源
《Journal of thermal analysis and calorimetry》 |2004年第3期|851-861|共11页
作者
R. L. Frost; K. Erickson; M. Weier;
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作者单位

Inorganic Materials Research Program, Queensland University of Technology 2 George Street, Brisbane GPO Box 2434, Queensland 4001, Australia;

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原文格式 PDF
正文语种英语
中图分类分析化学;
关键词
oxalate; Raman spectroscopy; copper(II) oxalate; evolved gas mass spectrometry; high resolution thermogravimetry; moolooite;

Thermal treatment of moolooite

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