Transition Metal Sulfides- and Noble Metal-Based Catalysts for N-Hexadecane Hydroisomerization: A Study of Poisons Tolerance

Catalysts

Andrey Pimerzin¹  Aleksander Savinov¹  Vladimir Vinokurov²  Aleksandr Glotov²  Aleksey Pimerzin²  Anna Vutolkina²  Anna Makova² 

[1] Division of Chemical Technology of Oil and Gas Refinery, Department of Chemical Technology, Samara State Technical University, 244 Molodogvardeyskaya Street, 443100 Samara, Russia;Division of Physical and Colloid Chemistry, Department of Chemical Technology and Ecology, Gubkin Russian State University of Oil and Gas, 65 Leninsky Prosp, 119991 Moscow, Russia;

关键词: hydroisomerization;    n-alkanes;    bifunctional catalysts;    stability;    CoMoS;    NiWS;   

DOI  :  10.3390/catal10060594

来源: DOAJ

【 摘 要 】

Bifunctional catalysts on the base of transition metal sulfides (CoMoS and NiWS) and platinum as noble metal were synthesized via wetness impregnation of freshly synthesized Al₂O₃-SAPO-11 composites, supported with favorable acidic properties. The physical-chemical properties of the prepared materials were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), low-temperature N₂ adsorption and high resolution transmission electron microscopy (HR TEM) methods. Catalytic properties were studied in n-hexadecane isomerization using a fixed-bed flow reactor. The catalytic poisons tolerance of transition metal sulfides (TMS)- and Pt-catalysts has been studied for sulfur and nitrogen, with the amount of 10–100 ppm addition to feedstock. TMS-catalysts show good stability during sulfur-containing feedstock processing, whereas Pt-catalyst loses much of its isomerization activity. Nitrogen-containing compounds in the feedstock has a significant impact on the catalytic activity of both TMS and Pt-based catalysts.

【 授权许可】

Unknown