โ Scribed by J.P. Biscar
No coin nor oath required. For personal study only.
In order to evaluate the hydrocarbon content of different oil shales, a rapid laser pyrolysis gas chromatographic technique has been developed. A pulsed ruby laser was used to pyrolyse the samples in a specially designed on-line cell. The results obtained show that the technique is reliable and can provid.e in a few minutes the total amount of hydrocarbons contained in the shale and additional information not accessible by other techniques presently used.
Pyrolysis units have been used' for other purposes and even coupled directly to gas chromatographs 293. Hot wires, heated tubes and cups or heated chambers are often reported4-0 on these techniques. A high voltage electric discharge pyrolysis has also been tried'. A common disadvantage of all these techniques is that they are not very reproducible.
A pulsed laser is probably the best available source of energy for analytical pyrolysis. Its output, in conventional mode, can be made stable to within
๐ SIMILAR VOLUMES