Hydrotreating of gasoline and diesel oil fractions over modified alumina/zeolite catalysts

Tuktin, B. T.; Zhandarov, Erbolat; Nurgaliyev, N. N.; Tenizbayeva, A A; Shapovalov, Anatoli

doi:10.1080/10916466.2019.1590403

Cited by 4 publications

(4 citation statements)

References 13 publications

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“…The sulfur content in the starting material and products was defined using a Spectroscan Instrument. The physico-chemical characteristics of the catalysts were studied using Brunauer-Emmett-Teller (BET) surface area analysis, electron microscopy and the temperature-programmed desorption of ammonia methods [27].…”

Section: Methodsmentioning

confidence: 99%

Hydroprocessing of Gasoline on Modified Alumina Catalysts

Tuktin,

Saidilda,

Nurzhanova

et al. 2024

Catalysts

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The hydroprocessing of gasoline on modified alumina catalysts makes it possible to obtain high-octane products. The implementation and development of the process have largely become possible due to the development of modified alumina catalysts that do not contain noble metals and exhibit special catalytic properties. This article discusses topical issues of petrochemistry, namely the creation of catalysts with improved characteristics for the production of high-octane gasoline with low sulfur content. New catalytic systems based on alumina and other carriers modified with transition metals, lanthanum and phosphorus were synthesized. Вy physico-chemical methods of analysis TPD of ammonia, TEM and XRD, we studied the acid–base and structural characteristics of the developed catalysts. The activity of the developed catalysts in the studied process of hydrotreating gasoline fractions depends on the structure and condition of the active centers. The process of hydrotreating straight-run gasoline in the presence of synthesized catalysts was carried out on a laboratory flow unit. It was shown that, during the hydrotreating of straight-run gasoline on the NiO-MoO3-La-P-HZSM-HY-Al2O3 catalyst, the octane number in the final product increased to 88.6, and the sulfur content decreased from 0.0088 to 0.001%. It was found that the minimum sulfur content in the gasoline hydrotreating product of 0.0005% was achieved on the catalyst CoO-WO3-La-P-HZSM-HY-Al2O3, which is significantly lower than for other studied catalytic systems. The obtained results of the sulfur content in the hydrotreating products fully comply with the Euro-5 standard. Thus, the efficiency of hydrotreating the gasoline fractions studied in this work was mainly determined by the nature of the carriers and modifiers used for the synthesis of catalysts and the technological parameters of the process. The synthesized catalysts showed high activity and selectivity, resulting in high-octane gasoline with a low sulfur content that meets international quality standards.

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Section: Methodsmentioning

confidence: 99%

Hydroprocessing of Gasoline on Modified Alumina Catalysts

Tuktin,

Saidilda,

Nurzhanova

et al. 2024

Catalysts

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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%

“…According to the international standards, significant restriction of content of sulfur, benzene, aromatic and olefin hydrocarbons in motor fuels is required. For carrying out deep hydrotreating of various fractions of oil it is necessary to use new effective catalysts and technologies [25][26][27][28][29]. Worldwide active search and development of new catalysts of deep hydrotreating of oil fractions is conducted and the production technology of motor fuels is improved.…”

Section: Introductionmentioning

confidence: 99%

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Development<strong> </strong>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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