Hydrocracking of N-Decane over Zeolite-Supported Metal Sulfide Catalysts. 1. CaY-Supported Transition Metal Sulfides

Abstract

. (1995). Hydrocracking of n-decane over zeolite-supported metal sulfide catalysts. 1. CaY-supported transition metal sulfides. Industrial and Engineering Chemistry Research, 34(4), 1156-1165. DOI: 10.1021 General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. The hydrocracking properties of various Cay-supported metal (Fe, Co, Ni, Mo, Ru, Rh, Pd, W, Re, Ir, and Pt) sulfide catalysts (prepared by impregnation) are examined by studying the hydroconversion of n-decane. All catalysts show cracking conversions which are significantly higher than that of the Cay support. There are large differences in catalytic behavior dependent on the metal sulfide present on the zeolite support. The amounts of S present on the catalyst are analyzed to determine the degree of sulfidation of the metal sulfide, while high resolution electron microscopy is used to characterize the distribution of the metal sulfide phase over the zeolite support. The observed differences in activity can be explained by the differences in intrinsic activity of the metal sulfide phase and the differences in distribution of this phase over the zeolite particle (internal or external sulfide deposition).

Recent Advances and Future Aspects in the Selective Isomerization of High n‐Alkanes

“…Supported on acidic materials (zeolite, silica-alumina, or alumina), the conventional hydrotreating catalysts Ni-Mo or Ni-W sulfides have generally good activity in hydroconversion of alkanes (280)(281)(282)(283)(284). Thus, Ni-Mo/USY shows an intermediate activity between that of a bifunctional Pt/HY zeolite catalyst and that of a monofunctional USY-zeolite in the hydroconversion of n-heptane.…”

Cracking

“…For example, it was found that, when the same acid support was impregnated with different transition metals to achieve the same metal-to-acid site ratio, there were notable differences in performance between the catalysts [86]. For example, it was found that, when the same acid support was impregnated with different transition metals to achieve the same metal-to-acid site ratio, there were notable differences in performance between the catalysts [86].…”

Catalysis in the Upgrading of Fischer–Tropsch Syncrude

“…The conditions of ideal HCR are approached when using catalysts with a strong HYD function. 418 Ideal HCR is reflected by a symmetric distribution of the cracked products among the carbon numbers around the mean. 419,420 The concept of an ideal HCR catalyst can be approached in practice with feed in the heavy naphtha range.…”

“…A CaY zeolite that was prepared by ion exchange of an NaY zeolite was used as support for the preparation of a series of transition metal (Ni, Co, Fe, Mo, Ru, Rh, Pd, W, Re, Ir and Pt) catalysts by Welters et al 418 The catalysts were prepared by pore volume impregnation. After sulfiding, the HCR activity of the catalysts was evaluated in a microreactor at 3 MPa using n-decane as feed.…”