Relevant bibliographies by topics / Hydrogenation. Phenanthrene

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Academic literature on the topic 'Hydrogenation. Phenanthrene'

Author: Grafiati
Published: 4 June 2021
Last updated: 16 February 2022

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Journal articles on the topic "Hydrogenation. Phenanthrene"

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Bamford, Karlee L., Lauren E. Longobardi, Lei Liu, Stefan Grimme, and Douglas W. Stephan. "FLP reduction and hydroboration of phenanthrene o-iminoquinones and α-diimines." Dalton Transactions 46, no. 16 (2017): 5308–19. http://dx.doi.org/10.1039/c7dt01024a.

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Hydrogenation and hydroboration of an N-aryl-phenanthrene-o-iminoquinone and two N,N′-diaryl-phenanthrene α-diimines give a series of derivatives including 1,3,2-oxaza- and diazaboroles and borocyclic radicals.
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Baikenov, M. I., D. E. Aitbekova, N. Zh Balpanova, A. Tusipkhan, G. G. Baikenova, Y. A. Aubakirov, A. R. Brodskiy, Fengyun Ма, and D. K. Makenov. "Hydrogenation of polyaromatic compounds over NiCo/chrysotile catalyst." Bulletin of the Karaganda University. "Chemistry" series 103, no. 3 (September 30, 2021): 74–82. http://dx.doi.org/10.31489/2021ch3/74-82.

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The activity and selectivity of the bimetallic NiCo/chrysotile catalyst during the hydrogenation of model objects (anthracene and phenanthrene) for 1 hour at an initial hydrogen pressure of 3 MPa and a temperature of 400 °C were studied. The chrysotile mineral used as a substrate for active centers of nickel and cobalt is a waste product of asbestos production at Kostanay Minerals JSC (the Republic of Kazakhstan). The catalyst was characterized by a complex of methods of physical and chemical analysis. The chrysotile mineral consists of nanotubes with an inner diameter of about 10 nm and an outer diameter of about 60 nm. The amount of hydrogenation products is 61.91 %, destruction — 15.08 % and isomerization — 8.37 % during the hydrogenation of anthracene. The amount of hydrogenation products is 26.09 %, and that of destruction is 2.51 % during the hydrogenation of phenanthrene. It was found that the catalyst selectively accelerates the hydrogenation reaction and allows increasing the yields of hydrogenation products. The schemes of the hydrogenation reaction of model objects were drawn up according to the results of gas chromatography-mass spectrometric analysis of hydrogenates.
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3

Robin, Denis, Michel Comtois, Anna Martel, René Lemieux, Amoy Kam Cheong, Gérard Belot, and Jean Lessard. "The electrocatalytic hydrogenation of fused poly cyclic aromatic compounds at Raney nickel electrodes: the influence of catalyst activation and electrolysis conditions." Canadian Journal of Chemistry 68, no. 7 (July 1, 1990): 1218–27. http://dx.doi.org/10.1139/v90-189.

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The electrocatalytic hydrogenation (ECH) of phenanthrene, anthracene, and naphthalene has been investigated under constant current at Raney nickel electrodes in a mixed aqueous organic medium. The influence of various parameters on the efficiency of the process determined by the current efficiency (a measure of the competition between hydrogenation and hydrogen evolution, the only two electrochemical processes occurring), the extent of hydrogenation (yield of octahydro-derivatives), and the conversion rate was studied with phenanthrene. The best conditions were ethylene glycol or propylene glycol as cosolvent containing between 1.5 to 5% of water, a neutral or slightly acidic medium containing boric acid (0.1 M) as buffer (initial pH of 2.6, final pH of 6.0–6.2), sodium chloride or tetrabutylammonium chloride as supporting electrolyte, a temperature of 80° C, and a current density of 42 to 84 mA/cm2. The most active electrodes (consisting of Raney Ni particles dispersed in a nickel matrix and surrounded by a layer of porous nickel) were obtained by leaching the dispersed alloy particles at 75 °C for 7 h in 30% aqueous sodium hydroxide. The electrohydrogenation stopped at derivatives with a single aromatic ring, namely the octahydrophenanthrenes, octahydroanthracenes, and tetralin. In a non-buffered medium, tetrahydrophenanthrene could be obtained with selectivities of 80% or better. Keywords: electrocatalytic hydrogenation, Raney nickel electrodes, phenanthrene, anthracene, naphthalene.
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4

Yang, Huibin, Yachun Wang, Hongbo Jiang, Huixin Weng, Feng Liu, and Mingfeng Li. "Kinetics of Phenanthrene Hydrogenation System over CoMo/Al2O3 Catalyst." Industrial & Engineering Chemistry Research 53, no. 31 (July 24, 2014): 12264–69. http://dx.doi.org/10.1021/ie501397n.

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5

Aitbekova, D. E., Xintai Su, Fengyung Ma, A. Tusipkhan, and M. I. Baikenov. "Effect of catalytic systems on the hydrogenation of phenanthrene." Bulletin of the Karaganda University. "Chemistry" series 96, no. 4 (December 30, 2019): 77–82. http://dx.doi.org/10.31489/2019ch4/77-82.

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6

Aitbekova, D. E., Ma Feng Yun, M. G. Meiramov, G. G. Baikenova, F. E. Kumakov, A. Tusipkhan, S. K. Mukhametzhanova, and M. I. Baikenov. "Catalytic Hydrogenation of a Model Mixture of Anthracene and Phenanthrene." Solid Fuel Chemistry 53, no. 4 (July 2019): 230–38. http://dx.doi.org/10.3103/s0361521919040025.

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7

Chapuzet, JM, B. Mahdavi, and J. Lessard. "The electrocatalytic hydrogenation of phenanthrene at modified Raney nickel electrodes." Journal de Chimie Physique 93 (1996): 1252–61. http://dx.doi.org/10.1051/jcp/1996931252.

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8

Zhang, Dexiang, Jing Zhao, Yuanyuan Zhang, and Xilan Lu. "Catalytic hydrogenation of phenanthrene over NiMo/Al2O3 catalysts as hydrogen storage intermediate." International Journal of Hydrogen Energy 41, no. 27 (July 2016): 11675–81. http://dx.doi.org/10.1016/j.ijhydene.2015.11.173.

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9

BAIKENOV, M. I., V. A. KHRUPOV, M. G. MEIRAMOV, B. T. ERMAGAMBETOV, A. YA CHEN, S. D. PIROZHKOV, and A. L. LAPIDUS. "ChemInform Abstract: Catalytic Hydrogenation of Phenanthrene in a System Carbon Monoxide- Water." ChemInform 23, no. 50 (September 1, 2010): no. http://dx.doi.org/10.1002/chin.199250110.

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10

Lee, Chung M., and Charles N. Satterfield. "Effect of ammonia on the hydrogenation of phenanthrene during the hydrodenitrogenation of quinoline." Energy & Fuels 7, no. 6 (November 1993): 978–80. http://dx.doi.org/10.1021/ef00042a039.

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Dissertations / Theses on the topic "Hydrogenation. Phenanthrene"

1

Johansson, Johannes. "Inhibition Kinetics of Hydrogenation of Phenanthrene." Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279025.

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In this thesis work the hydrogenation kinetics of phenanthrene inhibited by the basic nitrogen compound acridine and the non-basic carbazole was investigated. Based on a transient reactor model a steady state plug flow model was developed and kinetic parameters were estimated through nonlinear regression to experimental data. The experimental data was previously collected from hydrotreating of phenanthrene in a bench-scale reactor packed with a commercial NiMo catalyst mixed with SiC. As a first two-step solution, the yields of the hydrogenation products of phenanthrene were predicted as a function of conversion, which subsequently was used to calculate concentration profiles as a function of position in reactor. As a second improved solution, the concentration profiles were calculated directly as a function of residence time, and these results were then used for further analysis. Reaction network 2 in figure 7 was considered sufficient to describe the product distribution of phenanthrene, with a pseudo-first-order rate law for the nitrogen compounds. Both solution methods provided similar results which gave good predictions of the experimental data, with a few exceptions. These cases could be improved by gathering more experimental data or by investigating the effect of some model assumptions. The two-step method thus proved useful in evaluating the phenanthrene reaction network and providing an initial estimate of the parameters, while the onestep method then could give a more precise solution by calculating all parameters simultaneously. As expected, acridine was shown to be more inhibiting than carbazole, both in the produced concentration profiles and estimated parameters. A possible saturation effect was also seen in the inhibition behavior, where adding more nitrogen compounds only had a small additional effect on the phenanthrene conversion. The Mears and Weisz-Prater criteria were found to be inversely proportional to the concentrations of the nitrogen compounds and otherwise only depend on rate constants, with values well below limits for diffusion controlled processes. Sensitivity analyses also supported that the global minimum had been found in the nonlinear regression solution.
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