Transformations of tetradecane on La/Al2O3 + ZSM catalysts

Zakumbaeva, G. D.; Shapovalova, L. B.; Tuktin, B. T.; Omarova, A. A.

doi:10.1134/s096554411002009x

Cited by 6 publications

(7 citation statements)

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“…Similar structure were discovered on the surfaces bimetallic catalysts contained the noble metal. They were identified as the bimetallic clusters [5,6,7].…”

Section: Resultsmentioning

confidence: 99%

Interaction Between Propylene and H2O over Rh-Ir/C-Catalysts of Clusters Type. Communication 1

Zakumbaeva

Shapovalova

2016

Eur Chem Tech J

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The catalytic process of interaction between the propylene and H2O over bimetallic Rh-Ir/C-catalysts of clusters type, has been studied. The possibility of the process interaction between C3H6 and H2O according to and against Markovnikov rule are showed. The structure and state of Ru-Ir/C-catalysts surfaces were investigated by using electron microscopy.

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“…Similar structure were discovered on the surfaces bimetallic catalysts contained the noble metal. They were identified as the bimetallic clusters [5,6,7].…”

Section: Resultsmentioning

confidence: 99%

Interaction Between Propylene and H2O over Rh-Ir/C-Catalysts of Clusters Type. Communication 1

Zakumbaeva

Shapovalova

2016

Eur Chem Tech J

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“…The reaction process has been carried out at the common flow installation with a fixed bed (Figure 2) at temperatures of 320-400 ºC, volume rate of 2.0 h -1 and pressure 4.0 MPa by the method developed earlier in the laboratory and described in refs. [28,[31][32][33][34]. The reactor is made of a metal tube, the lower part is equipped with glass nozzles, which are filled with a layer of stationary catalyst at the required height and placed on top of another porcelain nozzle.…”

Section: Catalyst Sample Catalyst Compositionmentioning

confidence: 99%

“…The sulfur content in the starting material and products was defined using SPECTROSCAN Instrument. The physico-chemical characteristics of the catalysts were studied using BET methods, TEM microscopy, and TPD of ammonia [28,[31][32][33][34][40][41][42].…”

Section: Catalyst Sample Catalyst Compositionmentioning

confidence: 99%

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Development and Testing of Modified Alumina Catalysts for Hydrotreating Petroleum Gasoline Fraction

Tuktin¹,

Omarova²,

Sassykova³

et al. 2022

Preprint

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The oil produced in the oil fields of the Republic of Kazakhstan contains a high percentage of sulfur. Synthesis and improvement of the properties of catalytic systems for the production of fuels with high octane number and low sulfur content is currently an urgent task for Kazakhstan. In this study, catalytic systems with a new composition based on zeolites with the addition of rare-earth metals (E) and phosphorus (P) have been prepared and tested in the process of the catalytic hydrotreating of straight-run gasoline and gasoline of catalytic cracking. In case of NiO-MoO3-E-P-HZSM-HY-Al2O3 catalyst, the octane rating of the gasoline after hydro-processing was increased to 88-90, which is much higher than for other catalysts. The octane number of straight-run gasoline up to 400°C is a maximum of 90 (Research Method) and 83.7 (Motor Method). At the same time, the sulfur content in the resulting gasoline decreases from 0.0088% to 0.0011%. In the case of catalytic cracking gasoline, the sulfur content is reduced from 0.0134% to 0.0012%. The smallest residual sulfur content in the final product, 0.0005% is revealed in case of catalyst CoO-WO3-E-P-HZSM-HY-Al2O3, and it is 2-4 times lower than for catalysts CoO-MoO3-E-P-HZSM-HY-Al2O3 and NiO-MoO3-E-P-HZSM-HY-Al2O3. These amounts of sulfur residue in raw materials is lower than that required by the Euro-5 Standard. The surface of the prepared catalysts was 211.0-274.0 m2/g, diameter of pores d ≈ 1.5-2.5 nm and d ≈ 7.0 nm. The total pore volume of the catalysts was not higher than 0.28-0.41 ml/g. The catalysts developed in this study can be used for hydrotreating raw materials and producing high-octane gasoline with a low sulfur content, corresponding in its characteristics to the Euro-5 Standard.

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“…The activity of the synthesized catalysts was studied in the hydrofining of the gasoline fraction of oil. The process was carried out according to the method developed earlier and described in the works [16][17][18] . Hydrofining of petrol fractions of oil was performed with a flow installation fixed bed at temperatures of 320-400 ºC, the bulk flow rate of 2.0 h -1 , pressure 4.0 MPa.…”

Section: Introductionmentioning

confidence: 99%

Hydrofining of Petrol Fractions of Oil on Modified Alumina Catalysts

Tuktin¹,

Tenizbayeva²,

Omarova³

et al. 2019

RJC

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The paper describes the study of the gasoline fraction hydrofining on the zeolite-containing alumina catalysts modified with variable valence metals, additives of phosphorus and a rare-earth element. In this work, the new zeolite-containing alumina catalysts were developed: NiO-MoO 3 -E-P-HZSM-HY-Al 2 O 3 , CoO-MoO 3 -E-P-HZSM-HY-Al 2 O 3 and CoO-WO 3 -E-P-Al 2 O 3 -ZSM, where E is a rare-earth element. The research was carried out under high-pressure at the flow installation with a fixed catalyst bed. The smallest residual sulfur content (0.0005%) is observed in hydrotreated gasoline on the catalyst CoO-WO 3 -E-P-HZSM-HY-Al 2 O 3 , which is 2-4 times lower than on the catalysts CoO-MoO 3 -E-P-HZSM-HY-Al 2 O 3 and NiO-MoO 3 -E-P-HZSM-HY-Al 2 O 3 and lower than is limited by the Euro-5 standard. When tested on the NiO-MoO 3 -E-P-HZSM-HY-Al 2 O 3 catalyst, the octane number of the gasoline as a result of hydrotreating increased to 88.6, which is significantly higher than on other catalysts. According to electron microscopy, the catalysts are highly dispersed, the components of the active phase metals are mainly in the oxidized state, forming clusters-associates on the surface. The structure, dispersion and state of the clusters are related to the nature of the catalyst components. The synthesized catalysts make it possible to produce high-octane low-sulfur gasoline that meets European standards.

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Transformations of tetradecane on La/Al2O3 + ZSM catalysts

Cited by 6 publications

References 1 publication

Interaction Between Propylene and H2O over Rh-Ir/C-Catalysts of Clusters Type. Communication 1

Interaction Between Propylene and H2O over Rh-Ir/C-Catalysts of Clusters Type. Communication 1

Development<strong> </strong>and Testing of Modified Alumina Catalysts for Hydrotreating Petroleum Gasoline Fraction

Hydrofining of Petrol Fractions of Oil on Modified Alumina Catalysts

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