TITLE: Chemistry and Catalysis of Coal Liquefaction: Catalytic and Thermal Upgrading of Coal Liquid and Hydrogenation of CO to Produce Fuels.  Quarterly Progress Report, April-June 1982.

AUTHOR: W. H. Wiser.

INST.  AUTHOR: Utah Univ., Salt Lake City. Dept. of Mining and Fuels Engineering.

SPONSOR: Department of Energy, Washington, DC.

LANGUAGE: English

PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  Jul 82,  64p.

ABSTRACT:

Increase in the level of Co or Ni on 8% Mo/Al sub 2 O sub 3 catalysts resulted in increased hydrodesulfurization (HDS) and hydrogenation (HYD) activities, but more importantly the HDS/HYD selectivity markedly improved. The standard 3% Co 8% Mo/Al sub 2 O sub 3 laboratory catalyst underwent permanent partial deactivation of the HDS and HYD functions after reaction with indole, showing that nitrogen compounds cause permanent poisoning of this catalyst. Adsorption of various aromatic nitrogen compounds deactivated the HDS and HYD activities of a commercial CoMo/Al sub 2 O sub 3 catalyst to a differing degree depending on the basic strength and structure of the nitrogen compound. Steric hindrance seems to be important for adsorption on HDS sites but not on HYD sites.  (ERA citation 07:059109)

REPORT  NUMBER: DOE/ET/14700-11

CONTRACT  NUMBER: AC22-79ET14700