Selective Synthesis of a Gasoline Fraction from CO and H[sub.2] on a Co-SiO[sub.2]/ZSM-5/Al[sub.2]O[sub.3] Catalyst

• Published in: Catalysts Vol. 13; no. 9
• Main Authors: Yakovenko, Roman E, Narochnyi, Grigory B, Zubkov, Ivan N, Bozhenko, Ekaterina A, Kataria, Yash V, Svetogorov, Roman D, Savost’yanov, Alexander P
• Format: Journal Article
• Language: English
• Published: MDPI AG 01.09.2023
• Subjects: Cobalt; Gasoline; Raw materials; Technology application; Russia
• ISSN: 2073-4344; 2073-4344
• DOI: 10.3390/catal13091314

This article reports on a simple method for producing high-octane gasoline from CO and H[sub.2] on a Co-Al[sub.2]O[sub.3]/SiO[sub.2]/HZSM-5/Al[sub.2]O[sub.3] hybrid catalyst. In the selected pressure range (0.5, 1.0, and 2.0 MPa), it was found that a decrease in pressure and an increase in temperature contribute to an increase in the content of branched hydrocarbons. The optimal technological parameters of the process were determined to ensure high selectivity and productivity for C[sub.5]–C[sub.10] hydrocarbons: pressure—1.0 MPa, ratio H[sub.2]/CO = 2, gas space velocity—1000 h[sup.−1], temperature—250 °C. The selectivity for the gasoline fraction is 65.2%, and the ratio of branched to linear hydrocarbons (iso/n index) is 2.3. Under the specified technological conditions, an experimental batch of gasoline fraction (1000 cm[sup.3]) was produced at the pilot plant during 400 h of continuous operation. The main physicochemical and operational parameters of the experimental gasoline fraction of hydrocarbons have been determined. The octane number determined by the research method according to GOST R 52947-2019 is 78.5 units.