Special Issue "Recent Progress in Transition Metal Phosphide Catalysts for the Hydroprocessing of Petroleum or Biomass Feedstocks"

A special issue of Catalysts (ISSN 2073-4344).

Deadline for manuscript submissions: 28 February 2018

Special Issue Editor

Guest Editor
Assoc. Prof. Yong-Kul Lee

Dankook University, Yongin 16982, Korea
Website | E-Mail
Interests: heterogeneous catalysis; hydrotreating; hydrodesulfurization; hydrodeoxygenation; metal phosphide; metal chalcogenides; EXAFS; in situ spectroscopy

Special Issue Information

Dear Colleagues,

The transition metal phosphides, as a new class of hydro-processing catalysts, have shown excellent activity in hydrogenation (HYD), hydrodesulfurization (HDS), and hydrodenitrogenation (HDN) of petroleum feedstocks. More recently, metal phosphides have been effectively exploited in hydrodeoxygenation (HDO) for the upgrading of biomass feedstocks. Particular attention has been devoted to the preparation of more active and stable phosphides, since most of the catalytic properties that make the active phosphides strongly depend on the preparation method and pretreatment conditions. Moreover, the challenging aspects of the reaction mechanisms over the phosphides and the nature of active sites are still open for research. This Special Issue covers recent progress of transition metal phosphides, ranging from basic research and characterization to industrial applications. The Guest Editor hopes that the topics covered in this Special Issue will convey the expanding potential of phosphide catalysts and will be of interest for those active in the field.

I look forward to receiving original contributions or review papers.

Assoc. Prof. Yong-Kul Lee
Guest Editor

Manuscript Submission Information

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Keywords

  • Transition metal phosphide
  • Hydrotreating
  • Hydroprocessing
  • Hydrodesulfurization
  • Hydrodenitrogenation
  • Hydrodeoxygenation

Published Papers (1 paper)

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Research

Open AccessArticle HDO of Methyl Palmitate over Silica-Supported Ni Phosphides: Insight into Ni/P Effect
Catalysts 2017, 7(10), 298; doi:10.3390/catal7100298
Received: 30 July 2017 / Revised: 19 September 2017 / Accepted: 30 September 2017 / Published: 4 October 2017
PDF Full-text (2718 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Two sets of silica-supported nickel phosphide catalysts with a nickel content of about 2.5 and 10 wt % and Ni/P molar ratio 2/1, 1/1 and 1/2 in each set, were prepared by way of a temperature-programmed reduction method using (Ni(CH3COO)2
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Two sets of silica-supported nickel phosphide catalysts with a nickel content of about 2.5 and 10 wt % and Ni/P molar ratio 2/1, 1/1 and 1/2 in each set, were prepared by way of a temperature-programmed reduction method using (Ni(CH3COO)2) and ((NH4)2HPO4) as a precursor. The NixPy/SiO2 catalysts were characterized using chemical analysis N2 physisorption, XRD, TEM, 31P MAS NMR. Methyl palmitate hydrodeoxygenation (HDO) was performed in a trickle-bed reactor at 3 MPa and 290 °C with LHSV ranging from 0.3 to 16 h−1. The Ni/P ratio was found to affect the nickel phosphide phase composition, POx groups content and catalytic properties in methyl palmitate HDO with the TOF increased along with a decline of Ni/P ratio and a growth of POx groups’ content. Taking into account the possible routes of methyl palmitate conversion (metal-catalyzed hydrogenolysis or acid-catalyzed hydrolysis), we proposed that the enhancement of acid POx groups’ content with the Ni/P ratio decrease provides an enhancement of the rate of methyl palmitate conversion through the acceleration of acid-catalyzed hydrolysis. Full article
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