Sentences with phrase «impure carbon»
On this dot tiny lumps of impure carbon and water crawl about for a few years, until they dissolve into the elements of which they are compounded.
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The fermentation may be pure or impure, i.e. the end product may be almost exclusively lactic acid (homofermentative fermentation), or other substances may also be produced, such as acetic acid, carbon dioxide and ethanol (heterofermentative fermentation).
A low - pressure method, developed in the 1980s, forms a thin diamond film by shooting a current through carbon and hydrogen gases, but the results are impure.
A scientific definition of carbon is «the chemical element of atomic number 6, a nonmetal that has two main forms (diamond and graphite) and that also occurs in impure form in charcoal, soot, and coal».
Two kinds of BC are produced in combustion processes through different formation pathways: char is an impure form of graphitic carbon from combustion residue formed directly by pyrolysis in smoldering fires, while soot is a combustion condensate produced by gas - to - particle conversion at relatively high temperatures (> 600 °C) in flame.