Aromatic hydrocarbon

About: Aromatic hydrocarbon is a research topic. Over the lifetime, 5814 publications have been published within this topic receiving 55499 citations. The topic is also known as: arene & arenes.

Integrated chemical/biological treatment of organic waste

Abstract: A process for improved remediation of polynuclear aromatic hydrocarbon and/or polychlorinated hydrocarbon contaminated solid materials by integrated chemical/biological treatment comprising contacting the polynuclear aromatic hydrocarbon and/or polychlorinated hydrocarbon for chemical treatment with hydrogen peroxide in the presence of ferrous ion in liquid solution at a temperature of about 10° C. to about 100° C., oxidizing the polynuclear aromatic hydrocarbon materials and/or polychlorinated hydrocarbon materials and producing more readily biodegradable hydrocarbon product materials, and then biodigesting the product materials by aerobic and/or anaerobic biodigestion. A lower alcohol added to the chemical treatment in accordance with one embodiment further enhances oxidation of 4- to 6-ring aromatic hydrocarbon contaminants.

A reactive distillation process for the alkylation of aromatic hydrocarbons

Abstract: A unified process for reactive distillation under pressure for the alkylation of light aromatic hydrocarbons such as benzene and cumene with straight chain C6- C18 olefins using a solid acid alkylation catalyst supported in the reflux zone of the distillation column (column 2). The process is continuous, using a reactive distillation configuration such that at least a portion of the olefin (7) is injected below the benzene rectification zone at the top of the column. The aromatic hydrocarbon (17) is injected continuously at a low rate above the rectification zone (H) at the base of the column and above the reboiler (40). The alkylation reaction takes place primarily in the liquid phase on the solid acid catalyst and is characterized in that the molar ratio is adjustable up to about 100/1, through adjustment of the internal column operating pressure, the benzene reflux rate, the amount of benzene removed from the reflux condenser to storage or from the reboiler with the distillation column operated at or near total aromatic hydrocarbon reflux. The unexpectedly high liquid phase aromatic hydrocarbon to olefin molar ratios achieved in the reactive distillation column increases the selectivity to mono-alkylated aromatics and helps stabilize catalyst lifetime.

Hydrogenated vinyl aromatic hydrocarbon polymer composition and optical disc substrate

Abstract: A hydrogenated vinyl aromatic hydrocarbon polymer comprising: (a) 5 to 90% by weight of a vinyl aromatic hydrogenated polymer (A) obtainable by hydrogenating a hydrocarbon-conjugated diene block copolymer in such an amount that substantially all the double bonds derived from the conjugated diene bonds and from 60 mol% to 80 mol% of the double bonds in the aromatic rings have been hydrogenated, the content of the conjugated diene polymer units in the block copolymer being from 1 to 50 wt%; and (b) 10 to 95% by weight of a hydrogenated polymer (B) obtainable by hydrogenating a vinyl aromatic hydrocarbon polymer in such an amount that from 60 mol% to 80 mol% of the double bonds in the aromatic rings have been hydrogenated.