Is the Hammett Function (Surface Acidity) for minerals temperature dependant? If a Hammett function test for alumina or metallic oxide shows one result and then calcined at elevated temperatures how does this change the Hammett Function by removing moisture and or is this a change in crystal structure. Temperature from 300C, 400, 500C well below the melting point of the mineral. Lastly what minerals responds the most to calcining the mineral i.e. silicon based, aluminum based, zinc based, talc, mica, kaolin, titanium dioxide, calcium oxide and carbonate ,iron oxides and others? Does Hammett function also apply to surface basicity?
Is the Hammett Function (Surface Acidity) for minerals temperature dependant? If a Hammett function test for alumina or metallic oxide shows one result and then calcined at elevated temperatures how does this change the Hammett Function by removing moisture and or is this a change in crystal structure. Temperature from 300C, 400, 500C well below the melting point of the mineral. Lastly what minerals responds the most to calcining the mineral i.e. silicon based, aluminum based, zinc based, talc, mica, kaolin, titanium dioxide, calcium oxide and carbonate ,iron oxides and others? Does Hammett function also apply to surface basicity?
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter22: Inorganic Materials
Section: Chapter Questions
Problem 7P
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Is the Hammett Function (Surface Acidity) for minerals temperature dependant? If a Hammett function test for alumina or metallic oxide shows one result and then calcined at elevated temperatures how does this change the Hammett Function by removing moisture and or is this a change in crystal structure. Temperature from 300C, 400, 500C well below the melting point of the mineral. Lastly what minerals responds the most to calcining the mineral i.e. silicon based, aluminum based, zinc based, talc, mica, kaolin, titanium dioxide, calcium oxide and carbonate ,iron oxides and others? Does Hammett function also apply to surface basicity?
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