Yesterday, while doing some research on the internet, I came across some new terms/terminology: "
Kerogen". I found that word while searching some information about "
pyrolysis" in the famous
Wikipedia. Curious on the term
Kerogen, I click at the word and it brought me to a new Wikipedia page. OK, so the following is the description (adopted from wikipedia, off course...) :
Kerogen is a mixture of
organic chemical compounds that make up a portion of the organic matter in
sedimentary rocks.
[1] It is insoluble in normal
organic solvents because of the huge
molecular weight (upwards of 1,000
Daltons) of its component compounds. The soluble portion is known as
bitumen. When heated to the right temperatures in the
Earth's crust, (
oil window ca. 60°-120°C,
gas window ca.120°-150°C) some types of kerogen release
crude oil or
natural gas, collectively known as
hydrocarbons (
fossil fuels). When such kerogens are present in high concentration in rocks such as
shale, and have not been heated to a sufficient temperature to release their hydrocarbons, they may form
oil shale deposits.
As kerogen is a mixture of organic material, rather than a specific chemical; it cannot be given a chemical formula. Indeed its chemical composition can vary distinctively from sample to sample. Kerogen from the Green River Formation oil shale deposit of western North America contains elements in the proportions C 215 : H 330 : O 12 : N 5 : S 1.
If you want further explanation, check out the wikipage. At least, yesterday, besides learning about Kerogen, I also learned several other words and terminology related to our discipline. Maybe you can also share some new words with us :) ....
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