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首页> 美国政府科技报告 >Development of Instrumental Techniques for Coal Surface Analysis: Functional Group Analysis in Coal by 31 P NMR (Nuclear Magnetic Resonance) Spectroscopy: Quarterly Report, January 1, 1988-March 31, 1988
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Development of Instrumental Techniques for Coal Surface Analysis: Functional Group Analysis in Coal by 31 P NMR (Nuclear Magnetic Resonance) Spectroscopy: Quarterly Report, January 1, 1988-March 31, 1988

机译：煤表面分析仪器技术的发展：通过31 p NmR（核磁共振）光谱分析煤中的官能团分析：1988年1月1日至1988年3月31日的季度报告

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Five phosphorus-containing compounds, desirable as potential reagents for derivatizing labile hydrogen functional groups in coal, on coal surfaces, and in coal-derived materials have been synthesized. These compounds include 2-chloro-1,3-dioxaphospholane (1), 2-chloro-4,4,5,5-tetramethyl-1-1,3-dioxaphospholane (2), 2-chloro-4,4,5,5-tetramethyl-1,3-dioxaphospholane (3), 2-chloro-3-methyl-4-methyl-5-phenyl-1-oxa-3-azaphospholane (4), and 2-chloro-1,3-dithiaphospholane (5). Reagents 1 through 5 have been tested on numerous model compounds including phenols, alcohols, carboxylic acids, amines and thiols to produce 31 P NMR spectra useful for identification and eventual possible quantitation. Reagent 5 has been found to greatly exceed our expectations for resolving the individual 31 P absorption peaks and for separating the peak ranges for the various classes of derivatized model compounds. 7 refs., 1 fig., 1 tab. (ERA citation 14:005773)

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