Effect of Surface Concentration of Nickel on the Activity and Selectivity of Ni/ZnO-Al.sub.2O.sub.3 Sorbents in Reactive-Adsorption Desulfurization of Olefin-Containing Feedstock

• Published in: Chemistry and technology of fuels and oils Vol. 58; no. 2; p. 275
• Main Authors: Botin, A. A, Mozhaev, A. V, Boldushevskii, R. E, Khamzin, Yu. A, Nikulshin, P. A
• Format: Journal Article
• Language: English
• Published: Springer 01-05-2022
• Subjects: Adsorption; Nickel; Olefins; Thiophene
• ISSN: 0009-3092
• DOI: 10.1007/s10553-022-01379-3

The advantages of the reactive adsorption process for ultra-deep desulfurization of gasoline from catalytic cracking and other hydrocarbon fractions are demonstrated. In order to investigate the effect of the surface concentration of nickel on the activity and selectivity of the reactive adsorption process a series of Ni/ZnO-Al.sub.2O.sub.3 adsorption-catalytic systems with various nickel contents were synthesized. It was established that at the chemisorption stage at 400°C, with pressure of 0.5 MPa and feedstock weight hourly space velocity of 5.2 h.sup.-1 the conversion of thiophene is increased to 94.8% with increase of the surface concentration of nickel to 8 at/nm.sup.2. However, the highest value for the hydrodesulfurization/hydrogenation selectivity factor is obtained for the Ni/ZnO-Al.sub.2O.sub.3 adsorption-catalytic system with a nickel surface concentration of 6 at/nm.sup.2.