XIANG Ting sheng, CAI Chun fang, FU Hua e. Dissolution of Microcline by Carboxylic Acids at Different Temperatures and Complexing Reaction of Al Anion with Carboxylic Acid in Aqueous Solution[J]. Acta Sedimentologica Sinica, 2004, 22(4): 597-602.
| Citation:
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XIANG Ting sheng, CAI Chun fang, FU Hua e. Dissolution of Microcline by Carboxylic Acids at Different Temperatures and Complexing Reaction of Al Anion with Carboxylic Acid in Aqueous Solution[J]. Acta Sedimentologica Sinica, 2004, 22(4): 597-602.
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Dissolution of Microcline by Carboxylic Acids at Different Temperatures and Complexing Reaction of Al Anion with Carboxylic Acid in Aqueous Solution
- 1.
Department of Geochemistry, Yangtze University, Jingzhou, Hubei434023;
- 2.
Key Lab of Oil & gas Resources and Exploration Technique,Ministry of Education, Jingzhou,Hubei 434023;
- 3.
Institute of Geology and Geophysics, Chinese Academy of Sciences,Beijing 100029
- Received Date: 2003-09-27
- Rev Recd Date:
2003-12-08
- Publish Date:
2004-12-10
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Abstract
Experiments were performed to investigate the effects of mono functional and bi functional carboxylic acids on microcline at different temperatures. The experimental results are as follows: As temperatures arises, the concentrations and mobility of Al, SiO2 and other components are enhanced to allow rapid dissolution of microclines. At low pH, dissolution of microclines control with pH. However, pH is probably not significant under moderately acidic conditions. Date from these experiments indicate that oxalic and acetic acids reacting with microclines at different temperatures can enhance the solubility of Al and other cat ions and create secondary porosity, although oxalate has a much greater effect than acetate. Although organic acids can enhance substantially the solubility of Al, organic anion aluminum complexes prefer oil to water. So the concentrations of Al in the oilfield waters are low.
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