Naphthenes

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Related to Naphthenes: Naphthalenes

Naphthenes

alicyclic alkanes primarily found in petroleum (hence their name, which was first introduced in organic chemistry in 1883 by V. V. Markovnikov and V. N. Ogloblin). The most important naphthenes are cyclopentane and cyclohexane and their alkyl derivatives. Hydrocarbons containing several five- and six-member rings (including condensed forms such as Decalin) are also classified as naphthenes. However, some authors incorrectly expand the class to cover all cycloalkanes (cyclanes).

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Breen et al [3] and Seo et al [19] analyzed the liquid products obtained from the catalytic degradation of HDPE using GC-MS and found that the products were mainly consisted of paraffins, olefins, naphthenes and aromatics (PONA) where the detailed composition of the products has not been mentioned.

Characterization of Thermo-Catalytic Degradation Products of Waste High-Density Polyethylene Using GC-MS (An Environmental Waste as Feedstock Chemicals)

alkanes, naphthenes, alkynes, aromatics, and others), from viscously

From the Big Bang to Baku: A Primer on the Beginnings of the Petroleum End Times

Hydrotreatment is a process that converts polycyclic aromatics into naphthenes and allows for production of environmentally-sound naphthenic oils without production of carcinogenic side products.

Naphthenic extender oils in natural rubber tire tread compounds

Hydrogenating all of the aromatics present in bitumen will not solve this problem because the resulting naphthenes are still not suitable for the FCC process.

Cleaner energy for a global market: Canadian efforts in oil sands upgrading research and development

Toxicity is greatest with the aromatic hydrocarbons followed by the naphthenes and least with the paraffins(11).

Fire-eater's lung

researchers, Mumbai, India, have patented a process for oligomerization of olefins contained in refinery distillate streams including paraffins, naphthenes and aromatics.

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A method is presented which utilizes lumped composition data (Paraffins, Isoparaffins, Aromatics, Naphthenes, and Olefins--PIANO) to calculate generalized distances between samples in a five-dimensional PIANO space.

COMPUTER APPLICATIONS IN ENVIRONMENTAL CHEMISTRY: A PROCEDURE FOR COMPARING PETROLEUM HYDROCARBON SAMPLES

A calibration curve was assayed using the 78 compounds from the detailed hydrocarbon analysis (DHA) Paraffins, Isoparaffins, Olefins, Naphthenes, and Aromatics (PIONA) standard (Restek Cat.

Extension of analytical methods for detailed characterization of advanced combustion engine emissions

Real-Time Analyzer's Portable Fuel Quality Analyzer (PFQA) determines physical and chemical properties for diesel, gasoline and jet fuels in 10 sec, including but not limited to cetane index, cloud point, distillation values, flash point, freezing point, pour point and viscosity; as well as aromatics, ethanol, MTBE, naphthenes, saturates and sulfur.