TITLE: Novel Analytical Approaches to Coal Beneficiation. Annual Report.

AUTHOR: P. R. Griffiths.

INST.  AUTHOR: California Univ., Riverside. Dept. of Chemistry.

SPONSOR: Department of Energy, Washington, DC.

LANGUAGE: English

PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  1985,  53p.

NTIS ORDER NO.: DE85006259/INW

ABSTRACT:

In the second year of this grant, our work was concentrated in the following four areas: (1) The development of numerical methods for obtaining detailed chemical information from complex spectra with a highly overlapped band structure. The most successful of these methods involves a combination of Fourier self-deconvolution and curve-fitting the resultant spectrum to a number of Lorentzian-Gaussian bands. (2) Development of methods for extracting the mobile phase from coals and subsequent infrared and NMR spectrometric investigation of the extract. This work was needed (a) to aid in the assignment of bands in resolution-enhanced infrared spectra by comparison with exp 1 H and exp 13 C NMR spectra of the corresponding sample in the solution phase, (b) to permit quantitative determinations of functional groups in coal extracts through the estimation of the absorptivities of infrared bands in the spectra of coal extracts. These band absorptivities could then be transferred to the diffuse reflectance spectra of the whole coal and should permit more accurate quantitation of changes in the chemical composition of coals which occur during reactions such as oxidation, pyrolysis, and hydrogenation. (3) A study of the role of minerals as catalysts for the oxidation of whole coals. (4) The development of spectroscopic techniques to permit the characterization of intermediates in heterogeneous catalysis, especially the Fischer-Tropsch reaction. The first three topics listed above are directly related to the study of whole coals. The fourth pertains to the development of a method for studying the reaction of CO and H sub 2 , which can be directly obtained from coal. 22 references, 25 figures, 2 tables. (ERA citation 10:015577)

REPORT  NUMBER: DOE/PC/50797-T9

CONTRACT  NUMBER: FG22-82PC50797