Catalytic coal conversion support: use of laser flash-pyrolysis for structural analysis. Progress report, April 15, 1979-September 30, 1981

Technical Report · Mon Mar 01 04:00:00 EST 1982

DOI:https://doi.org/10.2172/5195901· OSTI ID:5195901

Rofer-DePoorter, C K; Hermes, R E

Untreated Fruitland subbituminous coal and Fruitland coal treated with several gasification catalysts were pyrolyzed with both Nd-glass and CO/sub 2/ lasers (1.06-..mu..m and 10.6-..mu..m wavelengths, respectively) to give both gaseous and intermediate-molecular weight products, which were analyzed by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). The catalysts used were AlCl/sub 3/, K/sub 2/H/sub 2/Sb/sub 2/O/sub 7/, CoCl/sub 2/, PbCl/sub 2/, Pb(NO/sub 3/)/sub 2/, Na/sub 2/Pb(OH)/sub 6/, Na/sub 2/MoO/sub 4/, NiCl/sub 2/, K/sub 2/CO/sub 3/, KHCO/sub 3/, Na/sub 2/CO/sub 3/, NaHCO/sub 3/, Na/sub 2/Ti/sub 3/O/sub 7/, NaVO/sub 3/, ZnCl/sub 2/, and NaZn(OH)/sub 3/. Gaseous products were analyzed from the Nd-glass laser pyrolysis; of the various catalysts, ZnCl/sub 2/ was found to affect N/sub 2/ production during pyrolysis most significantly. Intermediate products were analyzed from the CO/sub 2/ laser pyrolysis; product distribution was found to depend upon particle size (and consequent thermal history in pyrolysis) as well as on catalyst and heat treatment. Pyrolysis products could not be correlated in a statistically reliable way with coal or char structure. A supercritical extraction method with a Soxhlet extractor inside a pressure vessel was developed for liquid CO/sub 2/ as extractant. Gases evolved during processing of the coal-catalyst mixtures were analyzed by GC for several of the catalysts.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5195901
• Report Number(s): LA-9269-PR; ON: DE82014124
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404 -- Coal
Lignite
& Peat-- Gasification
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400100* -- Analytical & Separations Chemistry
ATMOSPHERES
CARBON DIOXIDE LASERS
CARBONACEOUS MATERIALS
CATALYSTS
CATALYTIC EFFECTS
CHARS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
CHROMATOGRAPHY
COAL
COAL GAS
COAL GASIFICATION
COAL LIQUEFACTION
COMPARATIVE EVALUATIONS
CONTROLLED ATMOSPHERES
CURIE POINT
DATA
DECOMPOSITION
DEUTERIUM
ELEMENTS
ENERGY SOURCES
EXPERIMENTAL DATA
EXTRACTION
FLUIDS
FOSSIL FUELS
FUELS
GAS CHROMATOGRAPHY
GAS LASERS
GASES
GASIFICATION
HALIDES
HALOGEN COMPOUNDS
HELIUM
HYDROGEN
HYDROGEN ISOTOPES
INFORMATION
ISOTOPES
LASERS
LIGHT NUCLEI
LIQUEFACTION
MASS SPECTROSCOPY
MATERIALS
NEODYMIUM LASERS
NONMETALS
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
PHYSICAL PROPERTIES
PYROLYSIS
PYROLYSIS PRODUCTS
RARE GASES
SEPARATION PROCESSES
SOLID STATE LASERS
SPECTROSCOPY
STABLE ISOTOPES
SUBBITUMINOUS COAL
SUPERCRITICAL GAS EXTRACTION
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
ZINC CHLORIDES
ZINC COMPOUNDS
ZINC HALIDES