Hostname: page-component-cd9895bd7-jkksz Total loading time: 0 Render date: 2024-12-24T13:22:10.054Z Has data issue: false hasContentIssue false

Identification of Crystalline Materials: Classification and Use of X-Ray Diffraction Patterns

Published online by Cambridge University Press:  10 January 2013

J. D. Hanawalt
Affiliation:
The Dow Chemical Company, Midland, Mich.
H. W. Rinn
Affiliation:
The Dow Chemical Company, Midland, Mich.

Extract

In the course of the past few years, X-ray and spectroscopic methods of analysis have found an increasing usefulness at the Dow Chemical Company. There are a large number of different types of problems on which information can be obtained by the variations of apparatus and technic which are possible in these two fields. It is not the purpose of this paper, however, to discuss these methods or applications in general, but to describe in some detail a scheme of classifying and using X-ray diffraction patterns which has been found very helpful in one particular application of X-rays — namely, that of identifying unknown substances by means of their Hull powder diffraction patterns.

The inherent power of X-ray diffraction as a practical means of chemical analysis was pointed out a good many years ago. Having a different theoretical basis and depending upon an entirely different technic than other methods, it would be expected to supplement the information to be obtained from other methods and, at times, to be applicable where other methods are not suitable. It appears, however, that the use of this method has not increased at a rate commensurate with its unique and valuable features, and that it is used by relatively few academic and industrial laboratories.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1986

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1.Clark, G. L., and Reynolds, D. H., Ind. Eng. Chem., Anal. Ed., 8, 36 (1936).CrossRefGoogle Scholar
2.Davey, W. P., Gen. Elec. Rev., 35, 565 (1922).Google Scholar
3.Davey, W. P., “Study of Crystal Structure and Its Applications,” New York, McGraw-Hill Book Co., 1934.Google Scholar
4.Hull, A. W., J. Am. Chem. Soc., 41, 1168 (1919).CrossRefGoogle Scholar
5.Waldo, A. W., Am. Mineral., 20, 575 (1935).Google Scholar
6.Warren, B. E., J. Am. Ceram. Soc., 17, 73 (1934).CrossRefGoogle Scholar
7.Wincbell, A. N., Am. Mineral., 12, 261 (1927).Google Scholar