Study of thermodynamics functions and their interrelationships in gas chromatographic process II: Discussion about equations for calculating in entropy of adsorption of alkanes on silica gel

Acta Chimica Sinica ›› 1988, Vol. 46 ›› Issue (1): 49-52. Previous Articles Next Articles

Original Articles

气相色谱吸附过程的热力学函数变化及规律探讨 II: 吸附熵变的计算方程与硅胶对直链烷的吸附

蔡显鄂;邓海滨;朱京

复旦大学化学系

发布日期:1988-01-15

Study of thermodynamics functions and their interrelationships in gas chromatographic process II: Discussion about equations for calculating in entropy of adsorption of alkanes on silica gel

CAI XIANE;DENG HAIBIN;ZHU JING

Published:1988-01-15

Abstract

An equation for calculating changes in entropy and enthalpy of adsorption was derived from the adsorption equilibrium constant: ln V癵 = -DH?RTc + [DS?R + ln(RT273S)]. The thermodn. parameters (DH? DS? DG? and ln K of adsorption of some alkanes and C6H6 on silica gel were calculated The results show that the contributions of 1 mol of CH2 groups to DH? DS? and DG?98 of adsorption were -4.4 kJ/mol, -5.9 kJ/mol.K, AND -2.7 kJ/mol, resp. An isothermodynamic point and a thermodn. compensation effect were also found as in the case of Porapaks reported previously.

Key words: CALCULATION, GAS CHROMATOGRAPHY, ABSORPTION EQUILIBRIUM, THERMODYNAMIC FUNCTION, ENTROPY, SILICA GEL, ADSORPTION EQUATION

CLC Number:

O642
O658

Cite this article

CAI XIANE;DENG HAIBIN;ZHU JING. Study of thermodynamics functions and their interrelationships in gas chromatographic process II: Discussion about equations for calculating in entropy of adsorption of alkanes on silica gel[J]. Acta Chimica Sinica, 1988, 46(1): 49-52.

Export EndNote|Reference Manager|ProCite|BibTeX|RefWorks

[1]	Guanglong Huang, Xiao-Song Xue. Computational Study on the Mechanism of Chen’s Reagent as Trifluoromethyl Source [J]. Acta Chimica Sinica, 2024, 82(2): 132-137.
[2]	Ning Li, Lina Xu, Guoyong Fang, Yingjin Ma. Fault-tolerant Coded Quantum Chemical Distributed Calculation [J]. Acta Chimica Sinica, 2024, 82(2): 138-145.
[3]	Zhao Zhenxin, Yao Yikun, Chen Jiajun, Niu Rong, Wang Xiaomin. A High-entropy Phosphate Cathode Host towards High-stability Lithium-sulfur Batteries [J]. Acta Chimica Sinica, 2023, 81(5): 496-501.
[4]	Jia Yanggang, Chen Shijie, Shao Xia, Cheng Jie, Lin Na, Fang Daolai, Mao Aiqin, Li Canhua. Preparation and High-performance Lithium-ion Storage of Cobalt-free Perovskite High-entropy Oxide Anode Materials [J]. Acta Chimica Sinica, 2023, 81(5): 486-495.
[5]	Juan Wang, Huamin Xiao, Ding Xie, Yuanru Guo, Qingjiang Pan. Density Functional Theory Study of Structures of Copper-doped and Graphitic Carbon Nitride-combined Zinc Oxides and Their Boosted Nitrogen Dioxide-sensing Performance [J]. Acta Chimica Sinica, 2023, 81(11): 1493-1499.
[6]	Xiandan Chai, Wenfa Chen, Qiunan Yan, Binwen Liu, Xiaoming Jiang, Guocong Guo. Rb₂MGe₃S₈ (M=Zn, Cd): Non-Centrosymmetry Transformation Led by Structure Change of [MGe₃S₈]^2- Unit^※ [J]. Acta Chimica Sinica, 2022, 80(5): 633-639.
[7]	Rui Guo, Xing Wei, Moyun Cao, Yan Zhang, Yun Yang, Jibin Fan, Jian Liu, Ye Tian, Zekun Zhao, Li Duan. Optical and Tunable Electronic Properties of AlAs/InSe Van Der Waals Heterostructures [J]. Acta Chimica Sinica, 2022, 80(4): 526-534.
[8]	Kai Qiu, Mingxia Yan, Shouwang Zhao, Shengli An, Wei Wang, Guixiao Jia. Theoretical Study on the Structural Stability and Oxygen Ion Oxidation of Al-doped Lithium-ion Battery Layered Cathode Li(Li_0.17Ni_0.17Al_0.04Fe_0.13Mn_0.49)O₂ [J]. Acta Chimica Sinica, 2021, 79(9): 1146-1153.
[9]	Chengqiao Li, Yibo Wang. A Combination Method of Quantum Chemistry and Its Application to the Study of the Effects of Mercury on the Formation of Sulfuric Acid Aerosol [J]. Acta Chimica Sinica, 2021, 79(8): 1065-1072.
[10]	Yan Wang, Yingqi Tian, Zhong Jin, Bingbing Suo. Hartree-Fock and Density Functional Calculations on Graphics Processing Unit [J]. Acta Chimica Sinica, 2021, 79(5): 653-657.
[11]	Si Wang, Jialing Ma, Lifang Chen, Xin Zhang. Role of Synergistic Effect in Oxygen Evolution Reaction over Layered Double Hydroxide [J]. Acta Chimica Sinica, 2021, 79(2): 216-222.
[12]	Danqi Zhang, Yingbo Shao, Hanliang Zheng, Biying Zhou, Xiao-Song Xue. Mechanistic Study on the Bidentate Nitrogen-Ligated Iodine(V) Reagent Promoted Oxidative Dearomatization of Phenols [J]. Acta Chimica Sinica, 2021, 79(11): 1394-1400.
[13]	Feng Boxu, Zhuang Xiaodong. Carbon-Enriched meso-Entropy Materials: from Theory to Cases [J]. Acta Chimica Sinica, 2020, 78(9): 833-847.
[14]	Huang Rongyi, Shen Qiong, Zhang Chao, Zhang Shaoyong, Xu Heng. Studies on the Mechanism of the Transition Metal-Catalyzed Reaction of Organonitrile with Sodium Azide [J]. Acta Chimica Sinica, 2020, 78(6): 565-571.
[15]	Li Wuyang, Xu Lejin. Research Methods for the Degradation Mechanism of Organic Pollutants in Wastewater [J]. Acta Chim. Sinica, 2019, 77(8): 705-716.

气相色谱吸附过程的热力学函数变化及规律探讨 II: 吸附熵变的计算方程与硅胶对直链烷的吸附

Study of thermodynamics functions and their interrelationships in gas chromatographic process II: Discussion about equations for calculating in entropy of adsorption of alkanes on silica gel

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments