IR spectral study of the effect of the reaction medium on the state of cobalt in a 10% Co/Al2O3 catalyst for aliphatic hydrocarbons from CO and H2

1990 ◽  
Vol 39 (11) ◽  
pp. 2394-2396
Author(s):  
A. V. Zaitsev ◽  
G. V. Kozlova ◽  
V. Yu. Borovkov ◽  
A. Yu. Krylova ◽  
A. L. Lapidus ◽  
...  
Keyword(s):  
Spectral Study ◽  
Reaction Medium ◽  
The State ◽  
Aliphatic Hydrocarbons ◽  
Al2o3 Catalyst

Aromatization of C2-C6 Aliphatic Hydrocarbons on Copper-Containing ZSM-5 Zeolites

1992 ◽  
Vol 57 (12) ◽  
pp. 2553-2560
Author(s):  
Zdravka Popova ◽  
Katia Aristirova ◽  
Christo Dimitrov
Keyword(s):  
Copper Content ◽  
Acid Strength ◽  
The State ◽  
Aliphatic Hydrocarbons ◽  
Bronsted Acid ◽  
Ion Formation ◽  
Brönsted Acid ◽  
Wide Range ◽  
Carbenium Ion ◽  
Acid Centers

The aromatization of a wide range of model aliphatic and cycloaliphatic hydrocarbons (ethene, ethane, propene, n-hexane, 1-hexene, methylcyclopentane, cyclohexane, cyclohexene) on copper-containing NaZSM-5 and HZSM-5 zeolites has been investigated. It was established that the degree of aromatization is related to carbenium ion formation and depends on the acid strength and copper content of zeolite. Experiments with copper-containing samples reduced prior to use indicated the possibility to enhance the selectivity to aromatization. The change of the state of Cu2+ ions during catalytic experiments confirmed the assumption about participation of Cu0 simultaneously with the Bronsted acid centers in the dehydrogenation/hydrogenation steps.

Spectral Study of the State of Dyes in Chemical Fibres

2004 ◽  
Vol 36 (4) ◽  
pp. 278-282 ◽  
Author(s):  
N. P. Zarubina ◽  
L. K. Zavadskaya ◽  
F. Yu. Telegin
Keyword(s):  
Spectral Study ◽  
The State

Mössbauer spectroscopic studies of the state of Pt−Sn/Al2O3 catalyst for hydrocarbon conversion

1982 ◽  
Vol 21 (3) ◽  
pp. 419-422 ◽  
Author(s):  
V. I. Kuznetsov ◽  
E. N. Yurchenko ◽  
A. S. Belyi ◽  
E. V. Zatolokina ◽  
M. A. Smolikov ◽  
...  
Keyword(s):  
Spectroscopic Studies ◽  
The State ◽  
Hydrocarbon Conversion ◽  
Al2o3 Catalyst

Study on the State Change of Ir/Al2O3 Catalyst by Decomposition of Ammonium Dinitramide (ADN) Based Low-Toxicity Monopropellant

2020 ◽  
Vol 20 (9) ◽  
pp. 5780-5782
Author(s):  
Jincheol Kim ◽  
Yeongmin Jo ◽  
Jonggi Jeon ◽  
Taegyu Kim
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Decomposition Reaction ◽  
The State ◽  
State Change ◽  
Ammonium Dinitramide ◽  
Before And After ◽  
Low Toxicity ◽  
Al2o3 Catalyst ◽  
Scanning Electron

The change of the Ir/Al2O3 catalyst before and after the reaction with ADN based low-toxicity monopropellant was confirmed. The catalyst were recovered after decomposition reaction with propellant in a monopropellant thruster at 350 °C preheating condition. Catalyst analysis was performed using a scanning electron microscope (SEM) and Brunauer-Emmett-Teller (BET) analyzer. The change of the catalyst specific devices.

Cobalt-boron catalyst for NaBH4 hydrolysis: The state of the active component forming from cobalt chloride in a reaction medium

2017 ◽  
Vol 441 ◽  
pp. 100-108 ◽  
Author(s):  
O.V. Netskina ◽  
D.I. Kochubey ◽  
I.P. Prosvirin ◽  
S.E. Malykhin ◽  
O.V. Komova ◽  
...  
Keyword(s):  
Active Component ◽  
Cobalt Chloride ◽  
Reaction Medium ◽  
The State

scholarly journals OBTAINING ACTIVE COMPONENTS (Tа, Rа) of BIMETALLIC CATALYSTS ON γ-Al2O3 AND TiO2 MATRICES

2016 ◽  
Vol 11 (5) ◽  
pp. 42-51
Author(s):  
E. S. Kulikova ◽  
D. V. Drobot ◽  
A. V. Chistyakov ◽  
M. V. Tsodikov
Keyword(s):  
General Formula ◽  
Supercritical Fluid ◽  
Electrochemical Synthesis ◽  
Bimetallic Catalysts ◽  
Aliphatic Hydrocarbons ◽  
Technological Scheme ◽  
Active Components ◽  
Supercritical Fluid Technology ◽  
Al2o3 Catalyst ◽  
Nanosized Tio2

Tantalum methylate of general formula Ta2(OMe)10 was synthesized by electrochemical synthesis as a precursor for obtaining oxomethylate complexes of tantalum and rhenium. The complex is used to prepare catalysts in reactions of cross-condensation and reductive dehydration of alcohols. The catalysts are based on γ-Al2O3 and TiO2. Ultradisperse and nanosized TiO2 is obtained by the supercritical fluid technology. The sample is characterized by different methods (DTA, XRD, DSC). It is shown that annealing at 340°C allows obtaining anatase modification of TiO2 with a specific urface of 27.3 sq.m/g which can serve as a matrix for drawing active components of catalysts. It is shown that the Ta-Re/Al2O3 catalyst allows transforming ethanol and mixtures of ethanol with glycerin into aliphatic hydrocarbons C3-C11. A technological scheme for obtaining active components of the catalysts for cross-condensation and reductive dehydration of alcohols is suggested.

scholarly journals A multiphase reaction medium including pressurized carbon dioxide and water for selective hydrogenation of benzonitrile with a Pd/Al2O3 catalyst

2013 ◽  
Vol 456 ◽  
pp. 215-222 ◽  
Author(s):  
Hiroshi Yoshida ◽  
Yu Wang ◽  
Satomi Narisawa ◽  
Shin-ichiro Fujita ◽  
Ruixia Liu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Selective Hydrogenation ◽  
Reaction Medium ◽  
Multiphase Reaction ◽  
Al2o3 Catalyst
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