Journal
CATALYSTS
Volume 10, Issue 6, Pages -Publisher
MDPI
DOI: 10.3390/catal10060594
Keywords
hydroisomerization; n-alkanes; bifunctional catalysts; stability; CoMoS; NiWS; Pt; catalytic poisons
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Funding
- Russian Science Foundation [19-79-00293]
- Russian Science Foundation [19-79-00293] Funding Source: Russian Science Foundation
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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 N(2)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.
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