Method of purifying and detecting metal ion in dimethyl sulfoxide
A dimethyl sulfoxide, metal ion technology, applied in chemical instruments and methods, organic chemistry, preparation of organic compounds, etc., can solve the problems of poor weaving performance, restricted carbon fiber price, inconsistency, etc.
A dimethyl sulfoxide, metal ion technology, applied in chemical instruments and methods, organic chemistry, preparation of organic compounds, etc., can solve the problems of poor weaving performance, restricted carbon fiber price, inconsistency, etc.
CN1887864AInactive Publication Date: 2007-01-03SHANGHAI INST OF ORGANIC CHEM CHINESE ACAD OF SCI
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Abstract
The present invention relates to method of purifying and detecting metal ion in dimetyl sulfoxide as the solution for polymerizing polyactylonitrile carbon fiber. The metal impurities are eliminated from dimetyl sulfoxide based on static adsorption and exchange principle, and the elimination includes eliminating iron ion from dimetyl sulfoxide with macroporous weak alkali type anion exchange resin and eliminating calcium, magnesium, sodium and potassium ions from dimetyl sulfoxide with macroporous strong base type cation exchange resin. The detection includes ultraviolet spectrophotometry to detect the concentrations of various metal ions in the organic solvent, o-phenanthroline colorimetry to detect iron ion content, chloroposphonazo I colorimetry to detect calcium and magnesium ion content, and 18-crown-6 synergistic extraction process to detect potassium ion content.
Description
technical field [0001] The present invention mainly relates to the purification and detection method of metal ions in dimethyl sulfoxide, specifically potassium, sodium, calcium, magnesium and iron metal ions in polyacrylonitrile carbon fiber polymerization solvent-dimethyl sulfoxide (DMSO) Purification and detection methods. It is proposed to use the principle of static adsorption exchange to remove metal impurities in dimethyl sulfoxide; to remove iron ions in the organic phase with macroporous weak base type acrylic anion exchange resin, and to remove organic phase with macroporous strongly acidic styrene type cation exchange resin. Calcium, magnesium, sodium, potassium ions in solution. At the same time, the concentration of each metal ion in the organic solvent was quickly detected by ultraviolet spectrophotometry, and the colorimetric method of o-phenanthroline was proposed for the determination of Fe 3+ The content of the chlorophosphine azo I colorimetric method for ...
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Patent Timeline
03 Jan 2007
Publication
CN1887864A
- IPC
- C07C315/06; C07C317/04; G01N21/31
- Inventors
- 黄晓宇; 谭久青