Startseite Effects of Surfactant Compounding on the Wettability Characteristics of Zhaozhuang Coal: Experiment and Molecular Simulation
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Effects of Surfactant Compounding on the Wettability Characteristics of Zhaozhuang Coal: Experiment and Molecular Simulation

  • Junqing Meng , Junkai Xia , Hanxie Meng und Jiaxing Niu
Veröffentlicht/Copyright: 7. September 2020
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Tenside Surfactants Detergents
Aus der Zeitschrift Tenside Surfactants Detergents Band 57 Heft 5

Abstract

It is important to study the mechanism of wettability of Zhaozhuang coal with surfactant compoundings in order to prevent dust disaster in the process of coal seam mining. By means of molecular simulation, the amounts of water absorbed by different systems, which are composed of monomer surfactant molecules and Zhaozhuang coal molecules or compounding surfactant molecules and Zhaozhuang coal molecules, were compared in this paper. The simulation results show that the system composed of 0.2% sodium dodecyl benzene sulfonate (SDBS) and 0.3% alcohol polyoxyethylene ether (AEO3) had the maximum water absorption amount of 479, which is significantly better than that of other compounding methods and of each monosurfactant system. Analysis results show that the interference of non-ionic surfactant can greatly reduce the electrostatic repulsion between ionic surfactants and make the adsorption sites on the Zhaozhuang coal molecule more compact. The experimental results show that the decreasing percentage of the contact angle of this type of compounding solution on Zhaozhuang coal was 83.74%, which is the best of the six compounding methods. It has a high degree of consistency with the simulation results, and the molecular simulation method applied in this paper shows that it is convenient and accurate. This research plays a guiding role in dustproof work in Zhaozhuang coal mining.

Kurzfassung

Es ist wichtig, den Mechanismus der Benetzbarkeit von Zhaozhuang-Kohle mit Tensidmischungen zu untersuchen, um eine Staubkatastrophe im Prozess des Kohleflözabbaus zu verhindern. Mittels Molekularsimulation wurde in dieser Arbeit die Menge der Wasseraufnahme verschiedener Systeme, die sich aus monomeren Tensidmolekülen und Zhaozhuang-Kohlemolekülen oder aus Molekülen aus Tensidmischungen und Zhaozhuang-Kohlemolekülen zusammensetzten, verglichen. Die Simulationsergebnisse zeigen, dass das System, das sich aus 0,2% Natriumdodecylbenzensulfonat (SDBS) und 0,3% Alkoholpolyoxyethylenether (AEO3) zusammensetzte, die gemischte maximale Wasserabsorptionsmenge von 479 hatte, was signifikant besser ist als die der anderen Compounding-Methoden und jeder Mono-Tensidsysteme. Die Analysenergebnisse zeigen, dass die Interferenz von nichtionischem Tensid die elektrostatische Abstoßung zwischen ionischen Tensiden stark reduziert und die Adsorptionsstellen auf dem Zhaozhuang-Kohlemolekül kompakter machen kann. Die experimentellen Ergebnisse zeigen, dass die prozentuale Abnahme des Kontaktwinkels dieser Compoundierlösung auf Zhaozhuang-Kohle 83,74% betrug, was die beste der sechs Compoundierungsmethoden ist. Sie weist einen hohen Grad an Übereinstimmung mit den Simulationsergebnissen auf, und die hier verwendete Molekularsimulationsmethode zeigt, dass sie praktisch und genau ist. Diese Forschung spielt eine führende Rolle bei staubdichten Arbeiten im Kohlebergbau von Zhaozhuang.

Key words: Surfactant compounding; molecule simulation; interaction parameter; contact angle
Stichwörter: Tensid-Compoundierung; Molekülsimulation; Wechselwirkungsparameter; Kontaktwinkel
∗ Correspondence address, Prof. Dr. Junqing Meng, State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology (Beijing), Beijing 100083, Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources, China University of Mining and Technology (Beijing), Beijing 100083, Tel.: 86-13671139683, E-Mail:

Meng Junqing received his PhD at China University of Mining and Technology (Beijing) in 2011. He served as an Associate Professor at China University of Mining and Technology (Beijing). Meng has long term experience with prevention and control of gas and dust disaster in coal mine and safety management of coal mine. Meng has authored 1 books and over 20 referred journal paper.

Xia Junkai served as a master student at China University of Mining and Technology (Beijing). Xia mainly researches in prevention and control of dust disaster in coal mine and safety management of coal mine.

Niu Jiaxing served as a master student at China University of Mining and Technology (Beijing). Niu mainly researches in prevention and control of dust disaster in coal mine and safety management of coal mine.

Meng Hanxie served as a master student at China University of Mining and Technology (Beijing). Meng mainly researches in prevention and control of dust disaster in coal mine and safety management of coal mine.

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Received: 2019-11-01
Accepted: 2020-05-25
Published Online: 2020-09-07
Published in Print: 2020-09-16

© 2020, Carl Hanser Publisher, Munich

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  10. Effects of Surfactant Compounding on the Wettability Characteristics of Zhaozhuang Coal: Experiment and Molecular Simulation
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https://doi.org/10.3139/113.110704
Schlagwörter für diesen Artikel
Surfactant compounding; molecule simulation; interaction parameter; contact angle

Artikel in diesem Heft

  1. Contents/Inhalt
  2. Contents
  3. Hygiene
  4. The Antimicrobial Activity of Herbal Soaps Against Selected Human Pathogens
  5. Detergent Properties of Coconut Oil Derived N-Acyl Prolinate Surfactant and the In silico Studies on its Effectiveness Against SARS-CoV-2 (COVID-19)
  6. Novel Surfactants
  7. Cationic Bola Form Metallosurfactants Based on Isothiouronium, Synthesis and Anti-Microbial Activity
  8. Application
  9. Effect of Inorganic Salt on Foam Properties of Nanoparticle and Surfactant Systems
  10. Effects of Surfactant Compounding on the Wettability Characteristics of Zhaozhuang Coal: Experiment and Molecular Simulation
  11. A Comparative Spectral Study on the Interaction of Organic Dye Congo-Red with Selective Aqueous Micellar Media of CPC, Rhamnolipids and Saponin
  12. Synthesis
  13. Development of a Gypsum Foaming Agent Based on Alkyl Polyglucosides
  14. Synthesis and Properties of Amide Gemini Surfactants
  15. Study of the Synthesis of Branched Chain Alkyl Polyglucosides from Guerbet Alcohol in an Acid/Phase Transfer Catalyst System and Their Properties
  16. Short Communication/Physical Chemistry
  17. Study of Methionine and Cumene Hydroperoxide Reaction Kinetics in the Presence of Nonionic Surfactant
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