Characterization of Acidified Opal Shale and Dynamic Adsorption of Toluene
Journal of Energy and Natural Resources
Volume 7, Issue 1, March 2018, Pages: 40-46
Received: Jun. 19, 2018; Published: Jun. 20, 2018
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Mingyue Kou, School of Environment, Harbin Institute of Technology, Harbin, China
Wei Zuo, School of Environment, Harbin Institute of Technology, Harbin, China
Xiangfu Li, School of Environment, Harbin Institute of Technology, Harbin, China
Ruosong Hu, School of Environment, Harbin Institute of Technology, Harbin, China
Pan Wang, School of Environment, Harbin Institute of Technology, Harbin, China
Jixu Zhan, School of Environment, Harbin Institute of Technology, Harbin, China
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Different kinds of acidified opal shale powders were obtained through the activation of natural opal shale powders with different concentrations of sulfuric acid. The natural opal shale and different acidified opal shale materials were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy. It was found that the opal shale has good acid resistance stability. When the sulfuric acid concentration reaches a high concentration of 6 mol/L in the acidification treatment, the opal shale can still maintain its original main silica structure. Natural opal shale is a typical mesoporous material with a BET specific surface area of about 12 nm, but it also contains a small amount of micropores and macropores. Appropriate acid treatment can increase the specific surface area. An excessively high concentration of acid that exceeds 6 mol/L sulfuric acid can destroy the main structure of the cation, resulting in a decrease in the specific surface area. In this paper, the adsorptive breakthrough curves for toluene, dynamic saturated adsorption capacity and other gas adsorption performances of these materials were studied. Finally, the best adsorption material was the 2 mol/L sulfuric acid acidified opal shale at 333K under stirring for 4 hours.
Opal Shale, Acid Activation, Adsorption of Toluene
To cite this article
Mingyue Kou, Wei Zuo, Xiangfu Li, Ruosong Hu, Pan Wang, Jixu Zhan, Characterization of Acidified Opal Shale and Dynamic Adsorption of Toluene, Journal of Energy and Natural Resources. Vol. 7, No. 1, 2018, pp. 40-46. doi: 10.11648/j.jenr.20180701.16
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