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Effect of Heating Atmosphere and Alkali Metal Doping on the Acidic and Basic Sites of Magnesium Oxide

Received: 5 January 2016     Accepted: 25 January 2016     Published: 6 March 2016
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Abstract

Reaction can either be acid or base catalysed. Among the different base catalysed reactions MgO has attracted keen interest from researchers in the last two decades. For different types of reactions different base strength catalyst is required. The basic strength of MgO can be modified in different ways including alkali metal doping of MgO which is main aim of this work. Also the acidic and basic properties of which are measured under different atmospheres to demonstrate the impact of this variable. The Alkali doped MgO catalyst was prepared by impregnation method and the acidic and basic sites were determined using CO2 and NH3. It was found that doping of MgO with alkali metals significantly decreased the BET surface area and decreased the phase transition temperature for brucite to periclase by about 50°C. Alkali metal doping also significantly increased the number of basic sites whilst decreasing the number of acidic sites as compared to pure MgO. Under a hydrogen atmosphere the number of basic sites on alkali metal doped MgO significantly increased.

Published in International Journal of Materials Science and Applications (Volume 5, Issue 2)
DOI 10.11648/j.ijmsa.20160502.11
Page(s) 36-42
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2016. Published by Science Publishing Group

Keywords

Alkali Doped MgO, Acidic and Basic Sites, Effect of Atmosphere

References
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  • APA Style

    Muhammad Bilal, Samuel David Jackson, Alexander Leishman Munnoch, Javed Ali. (2016). Effect of Heating Atmosphere and Alkali Metal Doping on the Acidic and Basic Sites of Magnesium Oxide. International Journal of Materials Science and Applications, 5(2), 36-42. https://doi.org/10.11648/j.ijmsa.20160502.11

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    ACS Style

    Muhammad Bilal; Samuel David Jackson; Alexander Leishman Munnoch; Javed Ali. Effect of Heating Atmosphere and Alkali Metal Doping on the Acidic and Basic Sites of Magnesium Oxide. Int. J. Mater. Sci. Appl. 2016, 5(2), 36-42. doi: 10.11648/j.ijmsa.20160502.11

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    AMA Style

    Muhammad Bilal, Samuel David Jackson, Alexander Leishman Munnoch, Javed Ali. Effect of Heating Atmosphere and Alkali Metal Doping on the Acidic and Basic Sites of Magnesium Oxide. Int J Mater Sci Appl. 2016;5(2):36-42. doi: 10.11648/j.ijmsa.20160502.11

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  • @article{10.11648/j.ijmsa.20160502.11,
      author = {Muhammad Bilal and Samuel David Jackson and Alexander Leishman Munnoch and Javed Ali},
      title = {Effect of Heating Atmosphere and Alkali Metal Doping on the Acidic and Basic Sites of Magnesium Oxide},
      journal = {International Journal of Materials Science and Applications},
      volume = {5},
      number = {2},
      pages = {36-42},
      doi = {10.11648/j.ijmsa.20160502.11},
      url = {https://doi.org/10.11648/j.ijmsa.20160502.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmsa.20160502.11},
      abstract = {Reaction can either be acid or base catalysed. Among the different base catalysed reactions MgO has attracted keen interest from researchers in the last two decades. For different types of reactions different base strength catalyst is required. The basic strength of MgO can be modified in different ways including alkali metal doping of MgO which is main aim of this work. Also the acidic and basic properties of which are measured under different atmospheres to demonstrate the impact of this variable. The Alkali doped MgO catalyst was prepared by impregnation method and the acidic and basic sites were determined using CO2 and NH3. It was found that doping of MgO with alkali metals significantly decreased the BET surface area and decreased the phase transition temperature for brucite to periclase by about 50°C. Alkali metal doping also significantly increased the number of basic sites whilst decreasing the number of acidic sites as compared to pure MgO. Under a hydrogen atmosphere the number of basic sites on alkali metal doped MgO significantly increased.},
     year = {2016}
    }
    

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  • TY  - JOUR
    T1  - Effect of Heating Atmosphere and Alkali Metal Doping on the Acidic and Basic Sites of Magnesium Oxide
    AU  - Muhammad Bilal
    AU  - Samuel David Jackson
    AU  - Alexander Leishman Munnoch
    AU  - Javed Ali
    Y1  - 2016/03/06
    PY  - 2016
    N1  - https://doi.org/10.11648/j.ijmsa.20160502.11
    DO  - 10.11648/j.ijmsa.20160502.11
    T2  - International Journal of Materials Science and Applications
    JF  - International Journal of Materials Science and Applications
    JO  - International Journal of Materials Science and Applications
    SP  - 36
    EP  - 42
    PB  - Science Publishing Group
    SN  - 2327-2643
    UR  - https://doi.org/10.11648/j.ijmsa.20160502.11
    AB  - Reaction can either be acid or base catalysed. Among the different base catalysed reactions MgO has attracted keen interest from researchers in the last two decades. For different types of reactions different base strength catalyst is required. The basic strength of MgO can be modified in different ways including alkali metal doping of MgO which is main aim of this work. Also the acidic and basic properties of which are measured under different atmospheres to demonstrate the impact of this variable. The Alkali doped MgO catalyst was prepared by impregnation method and the acidic and basic sites were determined using CO2 and NH3. It was found that doping of MgO with alkali metals significantly decreased the BET surface area and decreased the phase transition temperature for brucite to periclase by about 50°C. Alkali metal doping also significantly increased the number of basic sites whilst decreasing the number of acidic sites as compared to pure MgO. Under a hydrogen atmosphere the number of basic sites on alkali metal doped MgO significantly increased.
    VL  - 5
    IS  - 2
    ER  - 

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Author Information
  • Department of Chemistry, Kohat University of Science and Technology, Kohat, Pakistan

  • School of Chemistry, University of Glasgow, Scotland, UK

  • Johnson Matthey, Billingham, UK

  • Department of Chemistry, Kohat University of Science and Technology, Kohat, Pakistan

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