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The Extracting of Germanium from Crude Oxide


Clarke, Philip Seymour (1921) The Extracting of Germanium from Crude Oxide. Bachelor's thesis, California Institute of Technology. doi:10.7907/XZ1Y-JE25.


Since the discovery of germanium in certain American zinc ores, notably that of Joplin, Mo., several procedures have been suggested for the extraction of the germanium. These procedures, however, were simple distillations of the zinc ore with hydrochloric acid carried out in the laboratory on a small scale. The cost of the materials and the character of the reagents required obviously would cause such procedures to be impracticable on a large scale.

In the present investigation, the reactions of germanium compounds and the actions of different reagents on the sample were observed with the view toward developing a method of extraction that would be applicable on and industrial scale. For this purpose, a ten-pound sample of germanium-bearing zinc oxide was furnished by the New Jersey Zinc Co. with the accompanying information that germanium was present in the sample to the extent of 0.25% GeO2.

Item Type:Thesis (Bachelor's thesis)
Subject Keywords:Chemistry
Degree Grantor:California Institute of Technology
Division:Chemistry and Chemical Engineering
Major Option:Chemistry
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Unknown, Unknown
Thesis Committee:
  • None, None
Defense Date:1 January 1921
Record Number:CaltechETD:etd-02032005-111330
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:482
Deposited By: Imported from ETD-db
Deposited On:07 Feb 2005
Last Modified:03 Oct 2019 22:59

Thesis Files

PDF (Clarke_ps_1921.pdf) - Final Version
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