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本文研究了三元体系MgSo4-CH3CONHCONH2-H2O(I)和Mg(NO3)2-CH3CONHCONH2-H2O(Ⅱ)在30℃的相平衡,测定了饱和溶液溶解及其折光指数,绘制了相应了溶度力和折光指数一组成关系图。两个体系为简单截饱型。溶度曲线及折光指数曲线均由两支组成,分别与MgSO4.7H2O(I)或Mg(NO2)2.6H2O和CH2CONHCONH2相对应。共饱点的组成分别为(I)中Mg 相似文献
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GUO Lugang) )) WANG Haizeng) * ) Key Laboratory of Marine Chemistry Theory Technology Ministry of Education Ocean University of China Qingdao P. R. China ) Institute of Automation of the Chinese Academy of Sciences Beijing P. R. China ) Beijing Municipal Institute of Science Technology Information Beijing P. R. China 《中国海洋大学学报(英文版)》2009,8(3):229-232
A magnesia adsorbent was prepared from straw pulp black liquor and magnesium sulfate for the first time, and its adsorption
of phenol from aqueous solution was examined. The characteristics of the adsorbent were tested through chemical analysis,
surface analysis, X-ray diffraction and FT-IR spectroscopy. The effects of various factors, such as dose, adsorption time
and adsorption temperature, on phenol adsorption behavior were studied. The results show that the adsorption processes can
be fitted to the isotherm Langmuir model very well. It was found that the adsorption process was strongly influenced by temperature
and the optimal temperature for phenol removal was 40 °C. The optimum adsorption time was 10 min, and desorption would happen
afterwards. Between the models of Langmuir and Freundlich, the adsorption process of phenol onto magnesia fitted the Langmuir
equation better. 相似文献
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