Ni-Based Nanoparticles on Mesoporous Silica Supports for Single-Stage Arsenic and Chlorine Removal during Diesel Fraction Hydrotreating

Evgeny Naranov; Oleg Golubev; Konstantin Zanaveskin; Alena Guseva; Pavel Nikulshin; Yury Kolyagin; Anton Maximov; Eduard Karakhanov

doi:10.1021/acsomega.9b04373

Ni-Based Nanoparticles on Mesoporous Silica Supports for Single-Stage Arsenic and Chlorine Removal during Diesel Fraction Hydrotreating

ACS Omega. 2020 Mar 18;5(12):6611-6618. doi: 10.1021/acsomega.9b04373. eCollection 2020 Mar 31.

Authors

Evgeny Naranov¹, Oleg Golubev², Konstantin Zanaveskin¹, Alena Guseva³, Pavel Nikulshin³, Yury Kolyagin², Anton Maximov^{1

2}, Eduard Karakhanov²

Affiliations

¹ Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russia.
² Department of Chemistry, Moscow State University, 119991 Moscow, Russia.
³ All-Russia Research Institute of Oil Refining JSC (VNII NP JSC), 111116 Moscow, Russia.

Abstract

As- and Cl-containing impurities are highly detrimental to sulfided catalysts in hydrotreating processes. To prevent the irreversible loss of activity of the main sulfide catalysts by As and Cl contaminants, a protective double-layered guard bed catalyst is applied. Two types of mesoporous silica supports (SBA-15 and MCF) were used to obtain sorption-catalytic materials. The high specific surface area of the supports allowed for a significant increase in access to the active catalyst centers. The NiMo/SBA-15/Al₂O₃ and NiMg/MCF/Al₂O₃ sorption-catalytic materials demonstrated high activity and stability over 48 h for the simultaneous removal of As and Cl. The catalytic materials allowed for reducing the concentrations of As and Cl to less than 0.1 ppm in the diesel fraction under the following conditions: 5.0 MPa pressure, 2.0 h^-1 LHSV, 300 L/L H₂-to-substrate volume ratio, and 360 °C.