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二水硫酸鈣溶解動力學[J]，《化工學報》，2015，66（3）：1001-1006 感謝幫忙！ |
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tangcwk
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Accession number: 20151400720811 Title: Dissolution kinetics of calcium sulfate dihydrate Authors: Wang, Zining1; Zhou, Jiabei1; Zhu, Jiahua1 Email author jhzhu@scu.edu.cn; Wu, Hui1; Chen, Changguo1; Liu, Shizhong1 Author affiliation: 1 School of Chemical Engineering, Sichuan University, Chengdu; Sichuan, China Corresponding author: Zhu, Jiahua Source title: Huagong Xuebao/CIESC Journal Abbreviated source title: Huagong Xuebao Volume: 66 Issue: 3 Issue date: March 1, 2015 Publication year: 2015 Pages: 1001-1006 Language: Chinese ISSN: 04381157 CODEN: HUKHAI Document type: Journal article (JA) Publisher: Chemical Industry Press Abstract: Dissolution rate of a gypsum (CaSO4·2H2O) sample rotating in pure water was measured by automatically detecting electric conductivity of the solution, in one-second time interval of data acquisition. Superficial shape (7 cm×4 cm×2 cm) and surface area (100 cm2) of the sample were maintained constant basically during measurement. Under surface reaction-controlled dissolution experiment condition, the kinetics model was used for regression of dissolution rate constant (ks) and reaction order (n). The values of ks were 1.91×10-8, 3.46×10-8, 4.92×10-8, 7.07×10-8 mol·cm-2·s-1 respectively for temperatures 25, 45, 65, 85, accommodated by a value of 1.27 for reaction order n. Consequently activation energy of dissolution reaction was correlated 19.07 kJ·mol-1 through the Arrhenius equation. Because of eliminating uncertainty of sample's surface area in dissolution experiment, the results calculated from the kinetics equation with the model parameters regressed in this paper were more consistent with experimental value and closer to theoretical expectation of dissolution rates in literature. ©, 2015, Chemical Industry Press. All right reserved. Number of references: 22 Main heading: Reaction kinetics Controlled terms: Activation energy - Calcium - Chemical activation - Data acquisition - Dissolution - Driers (materials) - Enzyme kinetics - Kinetics - Rate constants - Surface reactions Uncontrolled terms: Arrhenius equation - Calcium sulfate dihydrate - Dissolution kinetics - Dissolution rates - Dissolution reactions - Experiment condition - Experimental values - Kinetics equation Classification code: 549.2 Alkaline Earth Metals - 723.2 Data Processing and Image Processing - 802.2 Chemical Reactions - 802.3 Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals - 931 Classical Physics; Quantum Theory; Relativity - 931.3 Atomic and Molecular Physics DOI: 10.11949/j.issn.0438-1157.20141069 Database: Compendex |
2樓2015-05-22 20:42:15
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Accession number: 20151400720811 Title: Dissolution kinetics of calcium sulfate dihydrate Authors: Wang, Zining1; Zhou, Jiabei1; Zhu, Jiahua1 Email author jhzhu@scu.edu.cn; Wu, Hui1; Chen, Changguo1; Liu, Shizhong1 Author affiliation: 1 School of Chemical Engineering, Sichuan University, Chengdu; Sichuan, China Corresponding author: Zhu, Jiahua Source title: Huagong Xuebao/CIESC Journal Abbreviated source title: Huagong Xuebao Volume: 66 Issue: 3 Issue date: March 1, 2015 Publication year: 2015 Pages: 1001-1006 Language: Chinese ISSN: 04381157 CODEN: HUKHAI Document type: Journal article (JA) Publisher: Chemical Industry Press |
3樓2015-05-22 20:42:38
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prince_n: 金幣+5, ★★★★★最佳答案 2015-05-23 09:19:28
prince_n: 金幣+5, ★★★★★最佳答案 2015-05-23 09:19:28
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Accession number是 20151400720811 恭喜  |
4樓2015-05-22 20:42:39
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