Hydrous pyrolysis may be a significant process in the creation of fossil fuels. Simple heating without water, anhydrous pyrolysis has long been considered to take place naturally during the catagenesis of kerogens to fossil fuels. In recent decades it has been found that water under pressure causes more efficient breakdown of kerogens at lower temperatures than without it. The carbon isotope ratio of natural gas also suggests that hydrogen from water has been added during creation of the gas.
A Possible Deep-Basin High-Rank Gas Machine Via Water Organic-Matter Redox Reactions (http://pubs.usgs.gov/dds/dds-067/CHH.pdf), Leigh C. Price
Surreptitiously converting dead matter into oil and coal - Water, Water Everywhere (http://www.findarticles.com/p/articles/mi_m1200/is_n8_v143/ai_13528247), Science News, February 20, 1993, Elizabeth Pennisi
HYDROGEN ISOTOPE SYSTEMATICS OF THERMALLY GENERATED NATURAL GASES (http://www.imog.agh.edu.pl/website/program/session/oral/pdf/ovii-3.pdf), Chris Clayton
NOVEL CATALYTIC CO-PROCESSING OF BIOWASTES WITH FOSSIL FUELS (http://www.megacarbon.com/techlit/coprocess.htm)
A method for studying the rate and type of hydrocarbon generated from a hydrocarbon source utilizes hydrouspyrolysis to generate hydrocarbons from the sample and then utilizes cryogenic methods to remove the fluid portions to a transfer vessel.
Heating kerogen isothermally at elevated temperatures and pressures in the presence of water is a process referred to variously as hydrouspyrolysis, simulated maturation or sealed vessel pyrolysis.
Hydrouspyrolysis involves isothermal heating of the source material with water in a closed system, but product recovery problems have limited its application to qualitative studies of oil and bitumen generation.
Pyrolysis usually means the chemical decomposition of organic materials by heating in the absence of oxygen or any other reagents, except possibly steam.
Pyrolysis in this context is the degradation of the rubber of the tire using heat in the absence of oxygen.
The term pyrolysis is sometimes used to encompass also thermolysis in the presence of water, such as steam cracking of oil, or more generally hydrouspyrolysis.
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