排序方式: 共有31条查询结果,搜索用时 118 毫秒
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采用自制的相平衡研究装置,测定了PEG 4000-Cs2SO4-H2O三元体系在25,35和45℃时的等温平衡溶解度,同时给出了该体系的完整相图,在相图中观察到6个相区。结果表明,该体系双液相区随着温度的升高略有增加,结线的斜率也随温度的升高而增大。用四参数方程y=a bx^0.5 cχ dχ^2对该体系的双液线进行了拟合,拟合结果较好。用Othmer-Tobias方程和Bancroft方程对该体系结线的实验数据进行了关联,所有线性相关系数均大于0.98。热重分析确定平衡固相组成为无水硫酸铯。 相似文献
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Zhu Xuefang He Meng Xiao Ling Liu Haozhuo Hu Mancheng Li Shuni Zhai Quanguo Chen Yu Jiang Yucheng 《Journal of Applied Electrochemistry》2022,52(6):979-987
Journal of Applied Electrochemistry - A novel nitrite electrochemical biosensor is constructed by glassy carbon electrodes (GC) coated by chloroperoxidase (CPO) -Au nanoparticles-MoS2 nanoflowers... 相似文献
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探讨Modal 11.8 tex纱的生产工艺。根据Modal纤维的性能特点,通过严格选用原料,采用多批号,按排队法进行配棉,防止色差;各工序合理配置工艺参数,并严格控制温湿度,保证粗纱在细纱处于放湿状态,络筒保持较高的相对湿度;正确调整细纱V型牵伸后区隔距以及缩短钢丝圈调换周期,较好地解决了后区牵伸力过大和短绒、棉结增多等问题,结果使Modal 11.8 tex纱顺利生产,质量较好地满足了使用需求,获得了良好的经济效益。 相似文献
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Jing Tang Mancheng Hu Shu'ni Li Ruifang Cui Lihua Jin 《Chemical Engineering Communications》2008,195(8):925-933
Liquid-liquid equilibria for ternary systems of water + rubidium chloride + 1-propanol and water + rubidium chloride + 2-propanol were measured at T = 298.15, 308.15, and 318.15 K. The experimental data were correlated using Othmer-Tobias and Bancroft correlations. The salting-out effect of 1-propanol in the two-liquid region was greater than that for 2-propanol, but the effect of temperature on the equilibrium was not significant. 相似文献
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In this paper, a novel quaternized magnetic resin, NDMP, was prepared and characterized. Two reactive dyes (RDs), Orange G (OG) and red RWO, were used as a small-molecular RD and large-molecular RD, respectively, to investigate their adsorption on NDMP. A common quaternized magnetic resin, MIEX, was selected for comparison. The adsorption kinetics of OG onto both resins and the adsorption kinetics of RWO onto NDMP followed pseudo-second-order kinetics, whereas the adsorption of RWO onto MIEX was better fitted by pseudo-first-order kinetics. The experimental data illustrated that the equilibrium adsorption amount of both RDs onto NDMP (1.9 mmol OG/g, 0.70 mmol RWO/g) was twice as large as that on MIEX (1.0 mmol OG/g, 0.35 mmol RWO/g). The Langmuir equation and the Freundlich model fit the isotherm data for OG and RWO adsorption, respectively. The adsorption of OG on the NDMP and MIEX resins declined in the presence of NaCl or Na2SO4. The effects of the salts on the adsorption of RWO were different. The recyclability of NDMP and MIEX were also evaluated. This work provides a reusable efficient adsorbent for the removal of RDs. 相似文献
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采用半微量相平衡测定装置和高精度密度-折光率测定仪,精确测定了CsCl-PEG 400-H2O三元体系在15,25和35℃3个温度下不同组分百分比溶液的折光率和密度数据,通过关联密度和折光率数据获得了CsCl在上述温度下的等温溶解度.对饱和体系的溶解度研究表明:在同一温度下CsCl的溶解度随聚乙二醇质量分数的增加而减小;在不同温度下CsCl的溶解度随温度的升高而增大.采用经验方程lnS=A1+A2ω2+A3ω2(2)+A4ω2(3)对饱和体系的溶解度进行了关联,效果较好.对不饱和体系的研究表明:当盐含量一定时,随着醇水比例的增加,体系的密度不断增大,折光率也随盐含量增加而增大;当醇水质量比一定时,体系的密度和折光率随盐含量的增加而增大,对不饱和体系的密度和折光率用经验方程Y=(A0+A1ω2+A2ω1+A3ω1ω2+A4ω2ω1(2))×exp[A5(ω1/ω3)+A6(ω1/ω3)2]进行拟合,拟合效果较好,同时给出了体系的盐析率曲线.本研究不仅为溶液化学提供了基础数据,也为混合溶液中盐和醇的分离纯化提供一种新的方法和思路,对CsCl进一步的应用、开发和研究具有一定的参考价值. 相似文献