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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.


Papers
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Journal ArticleDOI
TL;DR: The most significant aspect in microbial metabolisms, especially those of bacteria and archaea, is their marvelously wide acceptability of substrate electron donors and acceptors, which makes them to be attractive catalysts for environmental biotechnology in terms of degradation of harmful recalcitrant compounds, including hydrocarbons.
Abstract: The most significant aspect in microbial metabolisms, especially those of bacteria and archaea, is their marvelously wide acceptability of substrate electron donors and acceptors. This feature makes them to be attractive catalysts for environmental biotechnology in terms of degradation of harmful recalcitrant compounds, including hydrocarbons. Transformation of highly reduced and inert hydrocarbon compounds is with no doubt a challenging biochemical reaction for a single enzyme. However, several multi-component enzyme systems enable microorganisms to utilize hydrocarbons as carbon and energy (electron) sources. Initial biological attack to hydrocarbons is, in most cases, the hydroxylation that requires molecular dioxygen as a co-substrate. Dioxygen also contributes to the ring cleavage reaction of homo- and hetero-cyclic aromatic hydrocarbons. Although the molecular dioxygen is omnipresent and highly soluble in water, activation and splitting this triplet ground-state molecule to wed with difficult hydrocarbons need special devices. Non-heme iron, heme iron, or flavin nucleotide was designated as a major hidden dagger for this purpose.

16 citations

Journal ArticleDOI
TL;DR: In this paper, asymmetric polyimide Kapton® membranes were made by casting a solution of polyamic acid and 5 wt% phenanthrene in dimethylacetamide at 343-363 K, with a four-minute evaporation time, followed by a cyclization process of thermal treatment in a bath of dioctyl sebacate under N 2 in three steps: 1 h at 373 K, 1h at 473 K, and 1H at 573 K.

16 citations

Journal ArticleDOI
TL;DR: In this paper, a delayed luminescence (DL4) from naphthalene and di-α-naphthylalkanes in isooctane is shown to be sensitive to strongly phosphorescent impurities similar to diacetyl.

16 citations

Patent
02 May 2013
TL;DR: In this article, the authors proposed a method to purification of an aromatic hydrocarbon stream including selective removal of phenol from a process stream comprising aromatic hydrocar mixtures, especially those that contain higher-than-equilibrium paraxylene, by contact with suitable adsorbents.
Abstract: The invention is directed to purification of an aromatic hydrocarbon stream including selective removal of phenol from a process stream comprising aromatic hydrocarbon mixtures, especially aromatic hydrocarbon mixtures that contain higher-than-equilibrium paraxylene, by contact with suitable adsorbents, to provide a product stream having lower concentration of phenol than said process stream

16 citations

Patent
14 Nov 1969
TL;DR: In this paper, the authors describe a method to recover an AROMATIC HYDROCARBON from MIXTURES by passing a portion of the MAIN SOLVENT STREAM USED in the DISTILLATION COLUMN DIRECTly to a COUNTER-CURRENT EXTRACTION UNIT for contact with the RAFFINATE from the Distillation COLumn passing in COUNTERCURRENT FLOW with WATER to produce a product mix-ture from which, after SUBSEQUENT STRIPPING in STRIPP
Abstract: IN THE RECOVERY OF AROMATIC HYDROCARBON FROM MIXTURES CONTAINING SAME BY EXTRACTIVE DISTILLATION UTILIZING A SELECTIVE SOLVENT, A PURER PRODUCT IN A GREATER YIELD CAN BE ACHIEVED BY PASSING A PORTION OF THE MAIN SOLVENT STREAM USED IN THE DISTILLATION COLUMN DIRECTLY TO A COUNTERCURRENT EXTRACTION UNIT FOR CONTACT WITH THE RAFFINATE FROM THE DISTILLATION COLUMN PASSING IN COUNTERCURRENT FLOW WITH WATER TO PRODUCE A PRODUCT MIXTURE FROM WHICH, AFTER SUBSEQUENT STRIPPING IN STRIPPING COLUMN, AROMATIC HYDROCARBONS CAN BE RECOVERED WHICH WOULD HAVE OTHERWISE BEEN LOST.

16 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202319
202247
202155
2020143
2019177
2018195