Development of unique catalysts for hydrodenitrogenation of coal-derived liquids. Third quarterly report, March 15-June 15, 1979

Technical Report · Wed Aug 01 00:00:00 EDT 1979

DOI:https://doi.org/10.2172/5582611· OSTI ID:5582611

Katzer, J. R.; Stiles, A. B.; Kwart, H.

Experimental runs using decahydroquinoline and quinoline as reactants have been made. Results from decahydroquinoline runs show that the strong Bronsted acid catalyst such as HY-zeolite, intermediate Bronsted acid catalyst such as silica-alumina and weak Bronsted acid catalyst such as ..gamma..-alumina does not catalyze carbon-nitrogen bond scission. The carbon-nitrogen bond scission must therefore occur on other sites on the catalyst. In all likelihood, the olefinic products formed with these nonhydrogenating catalysts are polymerized on the surfaces of these acidic catalysts thereby making them inactive. There was no significant difference in nitrogen removal rate between the sulfided and unsulfided HY-zeolite catalyst, which indicated that sulfiding does not deactivate the HY-zeolite catalyst. The nature of cataytic function responsible for carbon-nitrogen bond scission has been studied using decahydroquinoline over a set of catalysts. The catalysts tested include catalysts with Co, Ni, Mo impregnated on silica-alumina or ..gamma..-alumina. The results showed that the rate of nitrogen removal was highest for Mo on ..gamma..-alumina catalyst. Several catalysts with the objective to develop uniquely new hydrogenation catalysts that will selectively coordinate the nitrogen atom and remove it without hydrogenating the entire ring thereby reducing hydrogen consumption, were prepared. The catalysts chosen for this study were aluminum borate and aluminum borate phosphate, impregnated with 4 wt % Nickel. Preliminary results showed that 4 wt % Ni on aluminum borate catalyst gives a marked increase in nitrogen removal in quinoline.

• Research Organization: Delaware Univ., Newark (USA). Dept. of Chemical Engineering
• DOE Contract Number: EI-78-S-01-3297
• OSTI ID: 5582611
• Report Number(s): FE-3297-3
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
CATALYSTS
SAMPLE PREPARATION
COAL LIQUIDS
DENITRIFICATION
ALUMINIUM COMPOUNDS
BORATES
CATALYTIC EFFECTS
CHEMICAL BONDS
CLEAVAGE
COAL
COAL LIQUEFACTION
COBALT
COMPARATIVE EVALUATIONS
EXPERIMENTAL DATA
GRAPHS
HYDROGENATION
MOLYBDENUM
NICKEL
PHOSPHATES
QUINOLINES
REFINING
STRUCTURAL MODELS
TABLES
AZINES
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CRYSTAL STRUCTURE
DATA
DATA FORMS
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HETEROCYCLIC COMPOUNDS
INFORMATION
LIQUEFACTION
METALS
MICROSTRUCTURE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
PROCESSING
PYRIDINES
REFRACTORY METALS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
010402* - Coal
Lignite
& Peat- Purification & Upgrading
010405 - Coal
Lignite
& Peat- Hydrogenation & Liquefaction