Pd-Rh promoted Co/HPS catalysts for heavy oil upgrading

M. M. Hossain; M. A. Al-Saleh; M. A. Shalabi; T. Kimura; T. Inui

doi:10.1016/j.apcata.2004.09.026

Pd-Rh promoted Co/HPS catalysts for heavy oil upgrading

M. M. Hossain^*
, M. A. Al-Saleh
, M. A. Shalabi
, T. Kimura
, T. Inui

^*Corresponding author for this work

King Fahd University of Petroleum & Minerals

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

This paper reports the promotional effects of Pd and Rh on hydrocracking (HC) and hydrodesulfurization (HDS) activity of Co/HPS catalyst. The catalysts were prepared by loading of noble metal followed by cobalt on the high porous saponite (HPS) support. The incipient impregnation technique was adapted for the loading of noble metal(s) while an ion exchange method was followed for cobalt loading on HPS. The catalysts were characterized by temperature-programmed reduction (TPR). Results showed that the reducibility of the catalysts was significantly improved in presence of the noble metals (Pd, Rh). The activity of the catalysts was tested in a batch autoclave reactor using vacuum gas oil as feedstock. Both the HC and HDS activity of noble metal-promoted Co/HPS catalysts were found to be higher than that of plain Co/HPS catalysts. Rh displayed higher promotional effects as compared to Pd in both HC and HDS purpose. This higher activity is consistent with the TPR results, which showed superior reducibility of Rh promoted catalysts. The most interesting part of this study pertained the effects of bi-noble (Pd-Rh) metal on Co/HPS. A trace amount of Rh along with Pd exhibited a significant enhancement of the catalytic activity of Co/HPS, which was comparable to what Rh alone did with a higher amount. The coke deposition on Pd-Rh promoted catalyst was also found lower than that of the plain and single noble metal promoted Co/HPS.

Original language	English
Pages (from-to)	65-71
Number of pages	7
Journal	Applied Catalysis A: General
Volume	278
Issue number	1
DOIs	https://doi.org/10.1016/j.apcata.2004.09.026
State	Published - 28 Dec 2004

Bibliographical note

Funding Information:
The authors wish to acknowledge The Center for Refining and Petrochemicals, The Research Institute, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia and Petroleum Energy Center, Japan, for supporting this work under the KFUPM-RI Project No. 21151. The authors also like to thanks Mr. Santiago Romero-Vargas for his help in reviewing the manuscript for improving the English.

Keywords

Co
HC
HDS
HPS
Heavy oil
Noble metal
Pd
Rh

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

Access to Document

10.1016/j.apcata.2004.09.026

Cite this

@article{dd2573ceb77f4d3c88e67df9e9e1c1c8,

title = "Pd-Rh promoted Co/HPS catalysts for heavy oil upgrading",

abstract = "This paper reports the promotional effects of Pd and Rh on hydrocracking (HC) and hydrodesulfurization (HDS) activity of Co/HPS catalyst. The catalysts were prepared by loading of noble metal followed by cobalt on the high porous saponite (HPS) support. The incipient impregnation technique was adapted for the loading of noble metal(s) while an ion exchange method was followed for cobalt loading on HPS. The catalysts were characterized by temperature-programmed reduction (TPR). Results showed that the reducibility of the catalysts was significantly improved in presence of the noble metals (Pd, Rh). The activity of the catalysts was tested in a batch autoclave reactor using vacuum gas oil as feedstock. Both the HC and HDS activity of noble metal-promoted Co/HPS catalysts were found to be higher than that of plain Co/HPS catalysts. Rh displayed higher promotional effects as compared to Pd in both HC and HDS purpose. This higher activity is consistent with the TPR results, which showed superior reducibility of Rh promoted catalysts. The most interesting part of this study pertained the effects of bi-noble (Pd-Rh) metal on Co/HPS. A trace amount of Rh along with Pd exhibited a significant enhancement of the catalytic activity of Co/HPS, which was comparable to what Rh alone did with a higher amount. The coke deposition on Pd-Rh promoted catalyst was also found lower than that of the plain and single noble metal promoted Co/HPS.",

keywords = "Co, HC, HDS, HPS, Heavy oil, Noble metal, Pd, Rh",

author = "Hossain, \{M. M.\} and Al-Saleh, \{M. A.\} and Shalabi, \{M. A.\} and T. Kimura and T. Inui",

note = "Funding Information: The authors wish to acknowledge The Center for Refining and Petrochemicals, The Research Institute, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia and Petroleum Energy Center, Japan, for supporting this work under the KFUPM-RI Project No. 21151. The authors also like to thanks Mr. Santiago Romero-Vargas for his help in reviewing the manuscript for improving the English. ",

year = "2004",

month = dec,

day = "28",

doi = "10.1016/j.apcata.2004.09.026",

language = "English",

volume = "278",

pages = "65--71",

journal = "Applied Catalysis A: General",

issn = "0926-860X",

publisher = "Elsevier B.V.",

number = "1",

}

TY - JOUR

T1 - Pd-Rh promoted Co/HPS catalysts for heavy oil upgrading

AU - Hossain, M. M.

AU - Al-Saleh, M. A.

AU - Shalabi, M. A.

AU - Kimura, T.

AU - Inui, T.

N1 - Funding Information: The authors wish to acknowledge The Center for Refining and Petrochemicals, The Research Institute, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia and Petroleum Energy Center, Japan, for supporting this work under the KFUPM-RI Project No. 21151. The authors also like to thanks Mr. Santiago Romero-Vargas for his help in reviewing the manuscript for improving the English.

PY - 2004/12/28

Y1 - 2004/12/28

N2 - This paper reports the promotional effects of Pd and Rh on hydrocracking (HC) and hydrodesulfurization (HDS) activity of Co/HPS catalyst. The catalysts were prepared by loading of noble metal followed by cobalt on the high porous saponite (HPS) support. The incipient impregnation technique was adapted for the loading of noble metal(s) while an ion exchange method was followed for cobalt loading on HPS. The catalysts were characterized by temperature-programmed reduction (TPR). Results showed that the reducibility of the catalysts was significantly improved in presence of the noble metals (Pd, Rh). The activity of the catalysts was tested in a batch autoclave reactor using vacuum gas oil as feedstock. Both the HC and HDS activity of noble metal-promoted Co/HPS catalysts were found to be higher than that of plain Co/HPS catalysts. Rh displayed higher promotional effects as compared to Pd in both HC and HDS purpose. This higher activity is consistent with the TPR results, which showed superior reducibility of Rh promoted catalysts. The most interesting part of this study pertained the effects of bi-noble (Pd-Rh) metal on Co/HPS. A trace amount of Rh along with Pd exhibited a significant enhancement of the catalytic activity of Co/HPS, which was comparable to what Rh alone did with a higher amount. The coke deposition on Pd-Rh promoted catalyst was also found lower than that of the plain and single noble metal promoted Co/HPS.

AB - This paper reports the promotional effects of Pd and Rh on hydrocracking (HC) and hydrodesulfurization (HDS) activity of Co/HPS catalyst. The catalysts were prepared by loading of noble metal followed by cobalt on the high porous saponite (HPS) support. The incipient impregnation technique was adapted for the loading of noble metal(s) while an ion exchange method was followed for cobalt loading on HPS. The catalysts were characterized by temperature-programmed reduction (TPR). Results showed that the reducibility of the catalysts was significantly improved in presence of the noble metals (Pd, Rh). The activity of the catalysts was tested in a batch autoclave reactor using vacuum gas oil as feedstock. Both the HC and HDS activity of noble metal-promoted Co/HPS catalysts were found to be higher than that of plain Co/HPS catalysts. Rh displayed higher promotional effects as compared to Pd in both HC and HDS purpose. This higher activity is consistent with the TPR results, which showed superior reducibility of Rh promoted catalysts. The most interesting part of this study pertained the effects of bi-noble (Pd-Rh) metal on Co/HPS. A trace amount of Rh along with Pd exhibited a significant enhancement of the catalytic activity of Co/HPS, which was comparable to what Rh alone did with a higher amount. The coke deposition on Pd-Rh promoted catalyst was also found lower than that of the plain and single noble metal promoted Co/HPS.

KW - Co

KW - HC

KW - HDS

KW - HPS

KW - Heavy oil

KW - Noble metal

KW - Pd

KW - Rh

UR - https://www.scopus.com/pages/publications/8744261766

U2 - 10.1016/j.apcata.2004.09.026

DO - 10.1016/j.apcata.2004.09.026

M3 - Article

AN - SCOPUS:8744261766

SN - 0926-860X

VL - 278

SP - 65

EP - 71

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

IS - 1

ER -

Pd-Rh promoted Co/HPS catalysts for heavy oil upgrading

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this