Desulfurization with transition metal catalysts

Technical Report · Wed Jun 01 04:00:00 EDT 1983

OSTI ID:5649840

Eisch, J J

The principal objective of this research is to uncover new reagents and catalysts for upgrading coal-derived fuels by removing undesirable organosulfur, organonitrogen and, if feasible, oxygen components. During the sixth quarter of this two-year grant the following studies were continued: (a) evaluation of the combined desulfurizing action on SRC liquids of nickel salts and metal hydrides, especially when the reactants are deposited on or attached to inorganic or organic supports; (b) assessment of the efficacy of the solid support in enhancing the desulfurizing action of the subvalent nickel; (c) devising an effective and safe way of maintaining desulfurization columns of such solid supports at 40 to 100/sup 0/C for extended periods; and (d) carrying out exploratory work on denitrogening model organic compounds. The following progress had been made: (a) after much experimentation, a heated, packed percolation column containing the nickel-based desulfurization agent has been devised, which permits the efficient passage of SRC liquids in reasonable periods of time; (b) evaluations continue of combinations of poly(40-vinylpyridine) and alumina as the solid support, and modest desulfurization (20%) of the SRC liquid has been observed; (c) various pretreatments of poly(4-vinylpyridine) with sodium diethylaluminum hydride aim at affixing the reducing agent to the polymer by hydralumination of the pyridine nucleus, thereby immobilizing the reductant and eventually the nickel reagent; (d) regeneration of nickelsulfide-containing columns by treatment with acetylacetone alone is not feasible, but stronger acids appear promising; and (e) although NaAlEt/sub 2/H/sub 2/ and various salts (Ti, Cr, Ni, Mo) were unreactive toward N-benzylcarbazole, a combination of lithium metal and titanium or nickel salts did cleave C-N bonds to form carbazole and some ammonia.

• Research Organization: State Univ. of New York, Binghamton (USA). Dept. of Chemistry
• DOE Contract Number: FG22-81PC40782
• OSTI ID: 5649840
• Report Number(s): DOE/PC/40782-T5; ON: DE83013607
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKALI METALS
ALUMINIUM COMPOUNDS
ALUMINIUM HYDRIDES
ALUMINIUM OXIDES
AROMATICS
AZAARENES
AZINES
AZOLES
CARBAZOLES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL LIQUIDS
COMPLEXES
DENITRIFICATION
DESULFURIZATION
ELEMENTS
FLUIDS
HETEROCYCLIC COMPOUNDS
HYDRIDES
HYDROGEN COMPOUNDS
LIQUIDS
LITHIUM
MEDIUM TEMPERATURE
METALS
NICKEL COMPLEXES
NICKEL COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
OXIDES
OXYGEN COMPOUNDS
POLYMERS
POLYVINYLS
PYRIDINES
REGENERATION
RESEARCH PROGRAMS
SRC PROCESS
TITANIUM COMPLEXES
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS