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Title: New coal-derived catalyst for transfer hydrocracking of vacuum residue

Abstract

Liquid phase hydrocracking of Arabian Heavy vacuum residue conducted in the presence of metal supported active carbon catalyst gave large amount of distillates (70%) with small hydrogen consumption. Especially the Yallourn coal derived active carbon catalyst showed high activity for the cracking of Arabian Heavy vacuum residue. The yield of asphaltene in the product oil was very low, whereas the coke yield was relatively high (about 4 wt%). In the metal-free active carbon system, the coke yield and the content of olefins, sulfur compounds, and asphaltene in the product oil were higher than those of the metal-supported active carbon system. These results suggest that asphaltene in feed oil was adsorbed on the metal supported active carbon catalyst and was decomposed or dehydrogenated on it to form coke and hydrogen atoms. The hydrogen atoms formed migrated on the carbon surface to reach the metal site and transferred to free radicals, olefins, or organo sulfur compounds.

Authors:
;  [1]
  1. Univ. of Tokyo (Japan)
Publication Date:
OSTI Identifier:
229614
Report Number(s):
CONF-9502114-Vol.2
TRN: 96:000932-0046
Resource Type:
Conference
Resource Relation:
Conference: 6. UNITAR international conference on heavy crude and tar sands on fueling for a clean and safe environment, Houston, TX (United States), 12-17 Feb 1995; Other Information: PBD: [1995]; Related Information: Is Part Of Heavy crude and tar sands -- Fueling for a clean and safe environment. Proceedings: Volume 2; Meyer, R.F. [ed.]; PB: 733 p.
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 01 COAL, LIGNITE, AND PEAT; PETROLEUM RESIDUES; HYDROCRACKING; ACTIVATED CARBON; CATALYTIC EFFECTS; BROWN COAL; CHEMICAL ACTIVATION; COKE; DISTILLATES; RADICALS; ASPHALTENES; PRECURSOR; HYDROGEN TRANSFER; TEMPERATURE DEPENDENCE

Citation Formats

Nakamura, Ikusei, and Fujimoto, Kaoru. New coal-derived catalyst for transfer hydrocracking of vacuum residue. United States: N. p., 1995. Web.
Nakamura, Ikusei, & Fujimoto, Kaoru. New coal-derived catalyst for transfer hydrocracking of vacuum residue. United States.
Nakamura, Ikusei, and Fujimoto, Kaoru. 1995. "New coal-derived catalyst for transfer hydrocracking of vacuum residue". United States.
@article{osti_229614,
title = {New coal-derived catalyst for transfer hydrocracking of vacuum residue},
author = {Nakamura, Ikusei and Fujimoto, Kaoru},
abstractNote = {Liquid phase hydrocracking of Arabian Heavy vacuum residue conducted in the presence of metal supported active carbon catalyst gave large amount of distillates (70%) with small hydrogen consumption. Especially the Yallourn coal derived active carbon catalyst showed high activity for the cracking of Arabian Heavy vacuum residue. The yield of asphaltene in the product oil was very low, whereas the coke yield was relatively high (about 4 wt%). In the metal-free active carbon system, the coke yield and the content of olefins, sulfur compounds, and asphaltene in the product oil were higher than those of the metal-supported active carbon system. These results suggest that asphaltene in feed oil was adsorbed on the metal supported active carbon catalyst and was decomposed or dehydrogenated on it to form coke and hydrogen atoms. The hydrogen atoms formed migrated on the carbon surface to reach the metal site and transferred to free radicals, olefins, or organo sulfur compounds.},
doi = {},
url = {https://www.osti.gov/biblio/229614}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Dec 31 00:00:00 EST 1995},
month = {Sun Dec 31 00:00:00 EST 1995}
}

Conference:
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