Engineering of zeolite crystals for catalytic cracking of triglycerides to renewable hydrocarbon fuels and chemicals: a review

Vu, Xuan Hoan; Armbruster, Udo

doi:10.1007/s13399-021-01389-x

Cited by 5 publications

(2 citation statements)

References 144 publications

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“…The hydro desulfurization required to reduce the sulfur content in oil fractions requires high costs, especially to achieve ultra-deep desulfurization <10 ppm. For the deep hydrotreating of various oil fractions, it is necessary to use new effective catalysts and technologies [15][16][17][18].…”

Section: Introductionmentioning

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: Introductionmentioning

confidence: 99%

Hydroprocessing of Gasoline on Modified Alumina Catalysts

Tuktin,

Saidilda,

Nurzhanova

et al. 2024

Catalysts

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“…At present, the development of technologies for processing oil residues is relevant and promising, which is associated with an increase in the share of hard-to-recover oil reserves: heavy and high-viscosity oils in the world. This, in turn, forces refineries to select carefully the available technologies for processing oil residues and increase the share of heavy oil raw materials in the total volume of oil-processing feedstock [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. 40-45% of all high-octane gasoline is produced at catalytic cracking plants with a steamer.…”

Section: Introductionmentioning

confidence: 99%

Catalytic cracking of M-100 fuel oil: relationships between origin process parameters and conversion products

et al. 2022

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The development of technologies for processing oil residues is relevant and promising for Kazakhstan, since the main oil reserves of hydrocarbons in the country are in heavy oils. This paper describes the study of the influence of technological modes on the yield and hydrocarbon composition of products formed because of cracking of commercial fuel oil and fuel oil M-100 in the presence of air in the reactor. For catalysts preparation, natural Taizhuzgen zeolite and Narynkol clay were used. It was found that the introduction of air into the reaction zone, in which oxygen is the initiator of the cracking process, significantly increases the yield of the middle distillate fractions. In the presence of air, the yield of diene and cyclodiene hydrocarbons significantly increases compared to cracking in an inert atmosphere. According to the data of IR spectral analysis of M-100 grade oil fractions, in addition to normal alkanes, the final sample contains a significant amount of olefinic and aromatic hydrocarbons. On the optimal catalyst, owing to oxidative cracking of fuel oil, the following product compositions (in %) were established: Fuel oil M-100: gas – 0.8, gasoline – 1.1, light gas oil – 85.7, heavy residue – 11.9, loss – 0.5 and total – 100.0%; commodity Fuel oil (M-100): gas – 3.3, gasoline – 8.4, light gas oil – 84.3, heavy residue – 4.0, loss – 0 and total – 100.0%.

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