Title 7 - Aluminium, Gallium, Indium and Thallium
Author:
, Butterworth-Heinemann 1997
1997
http://www.sciencedirect.com/science/article/pii/B9780750633659500134
More details: Publisher Summary This chapter discusses the discovery, isolation, abundance, and distribution of aluminum, gallium, indium, and thallium. Aluminum is a major constituent of many common igneous minerals, including feldspars and micas. Gallium, indium, and thallium are less abundant than aluminum and tend to occur at low concentrations in sulfide minerals rather than in oxides. The chapter describes the preparation and uses of the aluminum, gallium, indium, and thallium. The production of aluminum metal involves two stages: first, the extraction, purification, and dehydration of bauxite, and, second, the process of electrolysis of aluminum oxide dissolved in molten cryolite. The chapter also discusses the atomic and physical properties of aluminum, gallium, indium, and thallium. Indium is a soft and silvery metal with a brilliant luster. Its important applications are in low-melting alloys and in electronic devices. Technical-grade thallium is purified from other flue-dust elements by dissolving it in warm dilute acid and then precipitating the insoluble lead sulfate and adding hydrogen chloride to precipitate thallium chloride.
ISBN978-0-7506-3365-9
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