A facile synthesis strategy for structural property control of mesoporous alumina and its effect on catalysis for biodiesel production

W. Wu, Z. Wan, W. Chen, Hong Yang, Dongke Zhang

    Research output: Chapter in Book/Conference paperConference paper

    23 Citations (Scopus)
    136 Downloads (Pure)

    Abstract

    © 2014 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved. A facile synthesis route for the production of mesoporous alumina (MA) with tuneable structural properties including BET surface area, pore volume and pore size was systematically investigated by tailoring the amount of template P123 used in the synthesis. The general synthesis strategy was based on a sol-gel process by hydrolysis of aluminium isopropoxide associated with nonionic block copolymer (P123) as the template in a water system. The results showed that the addition of P123 played a crucial role in the synthesis process, leading to very regular variations in the surface area (146.6-261.6 m2/g), pore volume (0.164-2.152 cm3/g) and pore size (3.5-29.9 nm). MA-supported K species (MA-K) were prepared using KNO3 as the potassium precursor and adopted as the catalysts for biodiesel production. The introduction of K species to MA caused a reduction in the BET surface area and pore volume, but gave rise to a significant increase in pore size, especially when the K species was higher than 10%. K incorporation resulted in the formation of disordered, but significantly larger mesopores. In catalysis, by introducing 20% molar fraction of K species to MA, very high yield of biodiesel was achieved (92.2%) and further increased to 94.4% with 25% K. Based on the control of structural properties of MA, a series of MA-20K catalysts with the same K loading (20%) but different structural properties were prepared by varying P123 addition and were further tested in biodiesel synthesis. Higher biodiesel yields were obtained over the MAs with higher surface area, pore volume and bigger pore size, which were attributed to the reduced mass transfer limitation in catalysis.
    Original languageEnglish
    Title of host publicationAdvanced Powder Technology
    PublisherElsevier
    Pages1220-1226
    Volume25
    ISBN (Print)09218831
    DOIs
    Publication statusPublished - 2014
    EventChemeca 2013: Challenging Tomorrow - Brisbane, Australia
    Duration: 29 Sep 20132 Oct 2013

    Conference

    ConferenceChemeca 2013: Challenging Tomorrow
    CountryAustralia
    CityBrisbane
    Period29/09/132/10/13

    Fingerprint

    Biofuels
    Aluminum Oxide
    Catalysis
    Structural properties
    Pore size
    Powders
    Catalysts
    Aluminum
    Sol-gel process
    Block copolymers
    Hydrolysis
    Potassium
    Mass transfer
    Water

    Cite this

    @inproceedings{cb993524902c45f1a3b7558a6e8d5e3a,
    title = "A facile synthesis strategy for structural property control of mesoporous alumina and its effect on catalysis for biodiesel production",
    abstract = "{\circledC} 2014 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved. A facile synthesis route for the production of mesoporous alumina (MA) with tuneable structural properties including BET surface area, pore volume and pore size was systematically investigated by tailoring the amount of template P123 used in the synthesis. The general synthesis strategy was based on a sol-gel process by hydrolysis of aluminium isopropoxide associated with nonionic block copolymer (P123) as the template in a water system. The results showed that the addition of P123 played a crucial role in the synthesis process, leading to very regular variations in the surface area (146.6-261.6 m2/g), pore volume (0.164-2.152 cm3/g) and pore size (3.5-29.9 nm). MA-supported K species (MA-K) were prepared using KNO3 as the potassium precursor and adopted as the catalysts for biodiesel production. The introduction of K species to MA caused a reduction in the BET surface area and pore volume, but gave rise to a significant increase in pore size, especially when the K species was higher than 10{\%}. K incorporation resulted in the formation of disordered, but significantly larger mesopores. In catalysis, by introducing 20{\%} molar fraction of K species to MA, very high yield of biodiesel was achieved (92.2{\%}) and further increased to 94.4{\%} with 25{\%} K. Based on the control of structural properties of MA, a series of MA-20K catalysts with the same K loading (20{\%}) but different structural properties were prepared by varying P123 addition and were further tested in biodiesel synthesis. Higher biodiesel yields were obtained over the MAs with higher surface area, pore volume and bigger pore size, which were attributed to the reduced mass transfer limitation in catalysis.",
    author = "W. Wu and Z. Wan and W. Chen and Hong Yang and Dongke Zhang",
    year = "2014",
    doi = "10.1016/j.apt.2014.06.005",
    language = "English",
    isbn = "09218831",
    volume = "25",
    pages = "1220--1226",
    booktitle = "Advanced Powder Technology",
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    Wu, W, Wan, Z, Chen, W, Yang, H & Zhang, D 2014, A facile synthesis strategy for structural property control of mesoporous alumina and its effect on catalysis for biodiesel production. in Advanced Powder Technology. vol. 25, Elsevier, pp. 1220-1226, Chemeca 2013: Challenging Tomorrow, Brisbane, Australia, 29/09/13. https://doi.org/10.1016/j.apt.2014.06.005

    A facile synthesis strategy for structural property control of mesoporous alumina and its effect on catalysis for biodiesel production. / Wu, W.; Wan, Z.; Chen, W.; Yang, Hong; Zhang, Dongke.

    Advanced Powder Technology. Vol. 25 Elsevier, 2014. p. 1220-1226.

    Research output: Chapter in Book/Conference paperConference paper

    TY - GEN

    T1 - A facile synthesis strategy for structural property control of mesoporous alumina and its effect on catalysis for biodiesel production

    AU - Wu, W.

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    AU - Chen, W.

    AU - Yang, Hong

    AU - Zhang, Dongke

    PY - 2014

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    N2 - © 2014 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved. A facile synthesis route for the production of mesoporous alumina (MA) with tuneable structural properties including BET surface area, pore volume and pore size was systematically investigated by tailoring the amount of template P123 used in the synthesis. The general synthesis strategy was based on a sol-gel process by hydrolysis of aluminium isopropoxide associated with nonionic block copolymer (P123) as the template in a water system. The results showed that the addition of P123 played a crucial role in the synthesis process, leading to very regular variations in the surface area (146.6-261.6 m2/g), pore volume (0.164-2.152 cm3/g) and pore size (3.5-29.9 nm). MA-supported K species (MA-K) were prepared using KNO3 as the potassium precursor and adopted as the catalysts for biodiesel production. The introduction of K species to MA caused a reduction in the BET surface area and pore volume, but gave rise to a significant increase in pore size, especially when the K species was higher than 10%. K incorporation resulted in the formation of disordered, but significantly larger mesopores. In catalysis, by introducing 20% molar fraction of K species to MA, very high yield of biodiesel was achieved (92.2%) and further increased to 94.4% with 25% K. Based on the control of structural properties of MA, a series of MA-20K catalysts with the same K loading (20%) but different structural properties were prepared by varying P123 addition and were further tested in biodiesel synthesis. Higher biodiesel yields were obtained over the MAs with higher surface area, pore volume and bigger pore size, which were attributed to the reduced mass transfer limitation in catalysis.

    AB - © 2014 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved. A facile synthesis route for the production of mesoporous alumina (MA) with tuneable structural properties including BET surface area, pore volume and pore size was systematically investigated by tailoring the amount of template P123 used in the synthesis. The general synthesis strategy was based on a sol-gel process by hydrolysis of aluminium isopropoxide associated with nonionic block copolymer (P123) as the template in a water system. The results showed that the addition of P123 played a crucial role in the synthesis process, leading to very regular variations in the surface area (146.6-261.6 m2/g), pore volume (0.164-2.152 cm3/g) and pore size (3.5-29.9 nm). MA-supported K species (MA-K) were prepared using KNO3 as the potassium precursor and adopted as the catalysts for biodiesel production. The introduction of K species to MA caused a reduction in the BET surface area and pore volume, but gave rise to a significant increase in pore size, especially when the K species was higher than 10%. K incorporation resulted in the formation of disordered, but significantly larger mesopores. In catalysis, by introducing 20% molar fraction of K species to MA, very high yield of biodiesel was achieved (92.2%) and further increased to 94.4% with 25% K. Based on the control of structural properties of MA, a series of MA-20K catalysts with the same K loading (20%) but different structural properties were prepared by varying P123 addition and were further tested in biodiesel synthesis. Higher biodiesel yields were obtained over the MAs with higher surface area, pore volume and bigger pore size, which were attributed to the reduced mass transfer limitation in catalysis.

    U2 - 10.1016/j.apt.2014.06.005

    DO - 10.1016/j.apt.2014.06.005

    M3 - Conference paper

    SN - 09218831

    VL - 25

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    EP - 1226

    BT - Advanced Powder Technology

    PB - Elsevier

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