Stability of nickel/chromium catalyst in hydrogenation of aromatic hydrocarbons present in hydrotreated and nonhydrotreated liquid paraffins

1977 ◽  
Vol 13 (7) ◽  
pp. 485-486
Author(s):  
G. A. Ermidzina ◽  
N. Kh. Rogovskaya ◽  
V. A. Kupriyanov ◽  
S. N. Khadzhiev ◽  
N. V. �ngel'
Keyword(s):  
Aromatic Hydrocarbons ◽  
Chromium Catalyst ◽  
Nickel Chromium ◽  
Hydrogenation Of Aromatic Hydrocarbons

scholarly journals Effect of WC/Ni–Cr additive on changes in the composition of an atmospheric residue in the course of cracking

2019 ◽  
Vol 17 (2) ◽  
pp. 499-508 ◽  
Author(s):  
Galina S. Pevneva ◽  
Natalya G. Voronetskaya ◽  
Nikita N. Sviridenko ◽  
Anatoly K. Golovko
Keyword(s):  
Molecular Weight ◽  
Tungsten Carbide ◽  
Aromatic Hydrocarbons ◽  
Aromatic Compounds ◽  
Low Molecular Weight ◽  
Nickel Chromium ◽  
Atmospheric Residue ◽  
Sulfur Containing ◽  
Catalytic Additive ◽  
Sulfur Containing Compounds

AbstractThe paper presents the results of investigation of changes in the composition of hydrocarbons and sulfur-containing compounds of an atmospheric residue in the course of cracking in the presence of a tungsten carbide–nickel–chromium (WC/Ni–Cr) catalytic additive and without it. The cracking is carried out in an autoclave at 500 °C for 30 min. The addition of the WC/Ni–Cr additive promotes the deepening of reactions of destruction not only of resins and asphaltenes, but also high molecular weight naphthene-aromatic compounds of the atmospheric residue. It is shown that the content of low molecular weight C9–C17 n-alkanes and C9–C10 alkylbenzenes rose sharply in the products of cracking with addition of WC/Ni–Cr in comparison with those produced without the additive. Alkyl- and naphthene-substituted aromatic hydrocarbons of benzene, naphthalene, phenanthrene series, polyarenes, benzo- and dibenzothiophenes are identified.

scholarly journals Propane Pre-Reforming into Methane-Rich Gas over Ni Catalyst: Experiment and Kinetics Elucidation via Genetic Algorithm

Energies ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3393 ◽  
Author(s):  
Sergey I. Uskov ◽  
Dmitriy I. Potemkin ◽  
Leniza V. Enikeeva ◽  
Pavel V. Snytnikov ◽  
Irek M. Gubaydullin ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Molar Ratio ◽  
Ni Catalyst ◽  
Propane Conversion ◽  
Reaction Conditions ◽  
Experimental Conditions ◽  
Chromium Catalyst ◽  
Nickel Chromium ◽  
Wide Range ◽  
The Given

Pre-reforming of propane was studied over an industrial nickel-chromium catalyst under pressures of 1 and 5 bar, at a low steam to carbon molar ratio of 1, in the temperature range of 220–380 °C and at flow rates of 4000 and 12,000 h−1. It was shown that propane conversion proceeded more efficiently at low pressure (1 atm) and temperatures above 350 °C. A genetic algorithm was applied to search for kinetic parameters better fitting experimental results in such a wide range of experimental conditions. Power law and Langmuir–Hinshelwood kinetics were considered. It was shown that only Langmuir–Hinshelwood type kinetics correctly described the experimental data and could be used to simulate the process of propane pre-reforming and predict propane conversion under the given reaction conditions. The significance of Langmuir–Hinshelwood kinetics increases under high pressure and temperatures below 350 °C.

Activity and sulfur resistance of Pd/zeolite catalysts in hydrogenation of aromatic hydrocarbons

1976 ◽  
Vol 12 (4) ◽  
pp. 261-264
Author(s):  
M. V. Landau ◽  
V. Ya. Kruglikova ◽  
O. D. Kemoval'chikov ◽  
N. V. Goncharova ◽  
V. P. Svirina ◽  
...  
Keyword(s):  
Aromatic Hydrocarbons ◽  
Zeolite Catalysts ◽  
Sulfur Resistance ◽  
Hydrogenation Of Aromatic Hydrocarbons

Bimetallic Effect of Silica-Supported Pt–Ru Catalyst for Hydrogenation of Aromatic Hydrocarbons

2009 ◽  
Vol 82 (5) ◽  
pp. 627-629 ◽  
Author(s):  
Tsuyoshi Arakawa ◽  
Haruka Seki ◽  
Masa-aki Ohshima ◽  
Hideki Kurokawa ◽  
Hiroshi Miura
Keyword(s):  
Aromatic Hydrocarbons ◽  
Ru Catalyst ◽  
Hydrogenation Of Aromatic Hydrocarbons
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