Interaction of copper with fatty acids in Soxhlet extraction and its influence |
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| Authors: | Ming Jin Yanqing Xia Tianzhu Lei Junli Qiu Rui Zhang |
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| Institution: | [1]Key Laboratory of Gas Geochemistry, Institute of Geology and Geophysics, Chinese Academy of Sciences, Lanzhou 730000, China [2]Graduate School, Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | Treatment with metallic copper for the removal of elemental sulfur from bitumen extracted from sedi-mentary rocks or petroleum is the most widely used method. Little attention has been paid, however, to its disadvan-tages. It was observed that copper can interact with some polar organic substances during conventional sulfur re-moval, which can strongly influence the quantitative and qualitative determination of bitumen, as has been con-firmed by interaction of long-chain fatty acids with copper. The copper soap generated was analyzed by element analysis, inductively coupled plasma optical emission spectrometry (ICP-OES), thermal analysis (TG-DSC) and Fourier Transform Infrared spectroscopy (FTIR). Mechanism of the interaction was investigated and elucidated. Our experimental results would necessitate improvement of the present method for sulfur removal and/or a search for a new one. |
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| Keywords: | sulfur removal copper treatment fatty acid bitumen |
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