Shaping of Zr-MOF powder material into spherical pellets with diameters of 0.5–15 mm in the presence of 10 wt.% sucrose as a binder was successfully demonstrated using a granulator. Zr-MOF pellets were produced in a kilogram batch within 30 min operation time. This granulation approach is a more efficient way to shape MOF-type powder materials into application-specific configurations compared to the mechanical pressing method. The pellets could be conveniently packed in a small hydrogen storage tank. The physical degradation characteristics of the Zr-MOF pellets were studied by drop test and simulated tumbler drum test. The results showed zero breakage of the pellets after 70 consecutive drops at a height of 0.5 m and 5% breakage after 60 min of tumbling time at a speed of 25 rpm. Although the compromised value of the surface area led to a decreased hydrogen storage capacity, this shaping approach still holds promise given an appropriate choice of binder.
Reference:
Ren, J., Musyoka, N.M., Langmi, H.W., Swartbooi, A., North, B.C. and Mathe, M. 2015. A more efficient way to shape metal-organic framework (MOF) powder materials for hydrogen storage applications. International Journal of Hydrogen Energy, vol. 40(13), pp 4617-4622
Ren, J., Musyoka, N. M., Langmi, H. W., Swartbooi, A. M., North, B. C., & Mathe, M. K. (2015). A more efficient way to shape metal-organic framework (MOF) powder materials for hydrogen storage applications. http://hdl.handle.net/10204/8017
Ren, Jianwei, Nicholas M Musyoka, Henrietta W Langmi, Ashton M Swartbooi, Brian C North, and Mahlanyane K Mathe "A more efficient way to shape metal-organic framework (MOF) powder materials for hydrogen storage applications." (2015) http://hdl.handle.net/10204/8017
Ren J, Musyoka NM, Langmi HW, Swartbooi AM, North BC, Mathe MK. A more efficient way to shape metal-organic framework (MOF) powder materials for hydrogen storage applications. 2015; http://hdl.handle.net/10204/8017.
Copyright: 2015 Elsevier. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website. The definitive version of the work is published in International Journal of Hydrogen Energy, vol. 40(13), pp 4617-4622