Author
Nicholas M. Musyoka
Other affiliations: University of Johannesburg, University of the Western Cape
Bio: Nicholas M. Musyoka is an academic researcher from Council for Scientific and Industrial Research. The author has contributed to research in topics: Hydrogen storage & Fly ash. The author has an hindex of 25, co-authored 72 publications receiving 1735 citations. Previous affiliations of Nicholas M. Musyoka include University of Johannesburg & University of the Western Cape.
Topics: Hydrogen storage, Fly ash, Zeolite, Metal-organic framework, Hydrogen
Papers
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TL;DR: In this article, a review of the current research trends and perspectives on materials-based hydrogen storage including both material-based physical and chemical storage is presented, and the concept of storing hydrogen in para form for longterm hydrogen storage is discussed, and a converter packed with catalysts to process the normal hydrogen to para-hydrogen is highlighted.
379 citations
TL;DR: In this paper, a short review brings together the scattered literature that addresses pilot-scale production of metal-organic frameworks (MOFs) materials, which is an imperative to promote MOF-enabled products into the real world.
170 citations
TL;DR: In this paper, a review on the presence and formation of the structural defects in MOFs is presented, and the authors highlight the latest advances in the detection techniques of MOF defects.
157 citations
TL;DR: In this paper, a novel faujasite zeolite material synthesized from South African class F fly ash and denoted as FA/Na-X was ion exchanged with potassium to obtain the South African Class F fly-ash based Zeolite FA/K-X, which was used as a solid base catalyst in the production of biodiesel.
131 citations
TL;DR: In this article, the shape of Zr-MOF powder material into spherical pellets with diameters of 0.5-15mm in the presence of 10% sucrose as a binder was successfully demonstrated using a granulator.
129 citations
Cited by
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01 Nov 2000
TL;DR: In this paper, the authors compared the power density characteristics of ultracapacitors and batteries with respect to the same charge/discharge efficiency, and showed that the battery can achieve energy densities of 10 Wh/kg or higher with a power density of 1.2 kW/kg.
Abstract: The science and technology of ultracapacitors are reviewed for a number of electrode materials, including carbon, mixed metal oxides, and conducting polymers. More work has been done using microporous carbons than with the other materials and most of the commercially available devices use carbon electrodes and an organic electrolytes. The energy density of these devices is 3¯5 Wh/kg with a power density of 300¯500 W/kg for high efficiency (90¯95%) charge/discharges. Projections of future developments using carbon indicate that energy densities of 10 Wh/kg or higher are likely with power densities of 1¯2 kW/kg. A key problem in the fabrication of these advanced devices is the bonding of the thin electrodes to a current collector such the contact resistance is less than 0.1 cm2. Special attention is given in the paper to comparing the power density characteristics of ultracapacitors and batteries. The comparisons should be made at the same charge/discharge efficiency.
2,437 citations
Journal Article•
TL;DR: In this paper, the authors presented a method to detect the presence of a tumor in the human brain using EPFL-206025 data set, which was created on 2015-03-03, modified on 2017-05-12
Abstract: Note: Times Cited: 875 Reference EPFL-ARTICLE-206025doi:10.1021/cr0501846View record in Web of Science URL: ://WOS:000249839900009 Record created on 2015-03-03, modified on 2017-05-12
1,704 citations
TL;DR: In this paper, a brief review of hydrogen as an ideal sustainable energy carrier for the future economy, its storage as the stumbling block as well as the current position of solid-state hydrogen storage in metal hydrides and makes a recommendation based on the most promising novel discoveries made in the field in recent times which suggests a prospective breakthrough towards a hydrogen economy.
1,440 citations
TL;DR: In this paper, the authors present a review of coal fly ash at the global level, focusing on its current and potential applications, including use in the soil amelioration, construction industry, ceramic industry, catalysis, depth separation, zeolite synthesis, etc.
1,167 citations
TL;DR: In this article, the authors presented the hydrogen-based energy system as four corners (stages) of a square shaped integrated whole to demonstrate the interconnection and interdependency of these main stages.
1,090 citations