Topic
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.
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TL;DR: The strong liver tumor initiator AAS doubled the hepatic Ah receptor level when a dose of 20 mumol/kg was administered for 5 days and AAP increased the amount of the receptor 1.5-fold.
Abstract: The effect of the aromatic amines 2-acetylaminofluorene (AAF), 2-acetylaminophenanthrene (AAP) and trans-4-acetylaminostilbene (AAS) on the rat hepatic aromatic hydrocarbon (Ah) receptor level was studied. 3-Methylcholanthrene (MC), as a known receptor ligand, was used as a control. The complete liver carcinogen AAF and MC did not alter significantly the hepatic receptor concentration. In contrast, the strong liver tumor initiator AAS doubled the hepatic Ah receptor level when a dose of 20 mumol/kg was administered for 5 days. AAP increased the amount of the receptor 1.5-fold.
13 citations
TL;DR: The C9 aromatic hydrocarbon solvents referred to herein are based on chemistries assessed as part of the TSCA Section 4 Test Rule and contain primarily ethyl toluene and tri-methyl benzene isomers, but the specific compositions can vary based on feedstock and manufacturing process, thus, it is important to consider the composition of any specific solvent to assess similarity to that assessed in the TscA Section 3 Test Rule program.
13 citations
Patent•
26 Jul 2011TL;DR: In this article, a method for producing and aromatic hydrocarbinear-rich effluent from a lignocellulosic material is described. But the method comprises the step of combining the LCL material and an aromatic hydrocarbon-rich diluent to form a slurry, and hydrogen in the presence of a catalyst is contacted with the slurry at reaction conditions.
Abstract: Embodiments of methods and apparatuses for producing and aromatic hydrocarbon-rich effluent from a lignocellulosic material are provided herein. The method comprises the step of combining the lignocellulosic material and an aromatic hydrocarbon-rich diluent to form a slurry. Hydrogen in the presence of a catalyst is contacted with the slurry at reaction conditions to form the aromatic hydrocarbon-rich effluent.
13 citations
Patent•
31 Mar 2000
TL;DR: In this paper, the problem of obtaining a catalyst used to effect the bulk polymerization of a monomer having a polymerizable unsaturation such an acrylic monomer without causing the runaway of the reaction by using an organometallic compound and a thiol is solved.
Abstract: PROBLEM TO BE SOLVED: To obtain a catalyst used to effect the bulk polymerization of a monomer having a polymerizable unsaturation such an acrylic monomer without causing the runaway of the reaction by using an organometallic compound and a thiol. SOLUTION: An organometallic compound of the formula is used. In the formula, M is a group 4A, 4B, 5A, or 5B metal, chromium, ruthenium, or palladium; R1 and R2 are each an optionally substituted aliphatic hydrocarbon group, an optionally substituted alicyclic hydrocarbon group, an optionally substituted aromatic hydrocarbon group, an optionally substituted silicon-containing group, H, or a single bond, provided that R4 and R2 together may bond the two five- membered rings to each other and that a plurality of adjoining R1s or R2s may be combined to each other to form a cyclic structure; a and b are each 1-4; X is a halogen, a hydrocarbon group at least part of the H atoms of which may be substituted by halogens; and n is 0 or an integer equal to the valence of the metal M minus 2.
13 citations
TL;DR: Nickel-tungsten sulfide nanocatalysts for the hydrogenation of aromatic hydrocarbons (HCs) have been prepared by the in situ decomposition of a nickel thiotungstate precursor in a HC feedstock using 1-butyl-1-methylpiperidinium nickel thio-sulfide complex [BMPip]2Ni[WS4]2 as the precursor as discussed by the authors.
Abstract: Nickel-tungsten sulfide nanocatalysts for the hydrogenation of aromatic hydrocarbons (HCs) have been prepared by the in situ decomposition of a nickel thiotungstate precursor in a HC feedstock using 1-butyl-1-methylpiperidinium nickel thiotungstate complex [BMPip]2Ni[WS4]2 as the precursor. The in situ synthesized particles have been characterized by X-ray photoelectron spectroscopy and high-resolution transmission electron microscopy. It has been shown that the resulting Ni-W-S particles are nanoplates associated in multilayer agglomerates; the average length of the Ni-W-S particles is 6 nm; the average number of layers in the multilayer packaging is three. The catalytic activity of the synthesized catalysts has been studied in the hydrogenation of model mixtures of mono- and bicyclic aromatic HCs and in the conversion of dibenzothiophene in a batch reactor at a temperature of 350°C and a hydrogen pressure of 5.0 MPa. It has been shown that the studied catalysts can be used for the hydrofining of light cycle oil.
13 citations