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Browsing by Author "Bessarabov, D"

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Advanced hydrogen technologies for FC applications and PGM beneficiation in SA: Presentation

Author: Langmi, Henrietta W ; Bessarabov, D Date: Mar 2013 This presentation discusses the R&D activities at HySA Infrastructure (CSIR and NWU). The mission of HySA Infrastructure is to deliver technologies for hydrogen production (linked to renewable energy), storage and distribution. The scope ... Read more
Electrospun zeolite-templated carbon composite fibres for hydrogen storage applications

Author: Annamalai, Perushini ; Musyoka, Nicholas M ; Ren, Jianwei ; Langmi, Henrietta W ; Mathe, Mahlanyane K ; Bessarabov, D ; Petrik, LF Date: Jan 2017 The current study explored the application of the electrospinning technique to produce multi-hierarchical composites for hydrogen storage applications. Predetermined control of fibre porosity is expected to enable production of well-defined ... Read more
Hydrogen infrastructure within HySA national program in South Africa: road map and specific needs

Author: Bessarabov, D ; Van Niekerk, F ; Van der Merwe, F ; Vosloo, M ; North, Brian C ; Mathe, Mahlanyane K Date: 2012 The Department of Science and Technology of South Africa developed the National Hydrogen and Fuel Cells Technologies (HFCT) Research, Development and Innovation Strategy. The National Strategy was branded Hydrogen South Africa (HySA). HySA ... Read more
Hydrogen Storage Activities at HySA from (Nano)materials to Systems

Author: Langmi, Henrietta W ; North, Brian C ; Bessarabov, D ; Lototskyy, M ; Williams, M ; Pollet, BG Date: Nov 2012 One of HySA’s missions is to deliver technologies for hydrogen storage infrastructure that meet the set cost targets and provide the best balance of safety, reliability, robustness, quality and functionality. HySA aims to develop storage and ... Read more
Hydrogen storage for fuel cell applications: Challenges, opportunities and prospects for metal-organic frameworks

Author: Langmi, Henrietta W ; Bessarabov, D Date: Jul 2013 Safe, efficient hydrogen storage and distribution is widely regarded as one of the major challenges facing the transition to the Hydrogen Economy. Conventionally, hydrogen is stored as compressed gas or cryogenically as a liquid. In order to ... Read more
Hydrogen storage in metal-organic frameworks: A review

Author: Langmi, Henrietta W ; Ren, Jianwei ; North, Brian C ; Mathe, Mahlanyane K ; Bessarabov, D Date: May 2014 Metal-organic frameworks (MOFs) for hydrogen storage have continued to receive intense interest over the past decade. MOFs are a class of organic-inorganic hybrid crystalline materials consisting of metallic moieties that are linked by strong ... Read more
HySA infrastructure center of competence: A strategic collaboration platform for renewable hydrogen production and storage for fuel cell telecom applications

Author: Bessarabov, D ; Human, G ; Chiuta, S ; Van Niekerk, F ; De Beer, D ; Malan, H ; Grobler, LJ ; Langmi, Henrietta W ; North, Brian C ; Mudaly, D ; Mathe, Mahlanyane K Date: Sep 2014 The Department of Science and Technology of South Africa developed the National Hydrogen and Fuel Cells Technologies (HFCT) Research, Development and Innovation Strategy. The National Strategy was branded Hydrogen South Africa (HySA). HySA ... Read more
Microwave-assisted modulated synthesis of zirconium-based metal–organic framework (Zr-MOF) for hydrogen storage applications

Author: Ren, Jianwei ; Segakweng, T ; Langmi, Henrietta W ; Musyoka, Nicholas M ; North, Brian C ; Mathe, Mahlanyane K ; Bessarabov, D Date: May 2014 Zirconium-based metal–organic framework (Zr-MOF) was synthesized using a microwave-assisted modulated method in a short reaction time of 5 min. The Zr-MOF material was highly crystalline with well-defined octahedral shaped crystals, and it ... Read more
Modulated synthesis of zirconium-metal organic framework (Zr-MOF) for hydrogen storage applications

Author: Ren, Jianwei ; Langmi, Henrietta W ; North, Brian C ; Mathe, Mahlanyane K ; Bessarabov, D Date: Jan 2014 A modulated synthesis of Zr-metal organic framework (Zr-MOF) with improved ease of handling and decreased reaction time is reported to yield highly crystalline Zr-MOF with well-defined octahedral shaped crystals for practical hydrogen storage ... Read more
An overview of hydrogen storage materials: Making a case for metal organic frameworks

Author: Langmi, Henrietta W ; Ren, Jianwei ; Rogers, D ; North, Brian C ; Mathe, Mahlanyane K ; Bessarabov, D Date: Apr 2013 One of the major challenges facing the transition to a Hydrogen Economy is the development of a suitable storage medium for hydrogen. Conventionally, hydrogen is stored as compressed gas or cryogenically as a liquid. In order to meet future ... Read more
Progress in materials-based hydrogen storage at Hysa infrastructure in South Africa

Author: Langmi, Henrietta W ; Ren, Jianwei ; Musyoka, Nicholas M ; North, Brian C ; Mathe, Mahlanyane K ; Bessarabov, D Date: Oct 2015 The South African Department of Science and Technology (DST) developed the National Hydrogen and Fuel Cells Technologies (HFCT) Research, Development and Innovation (RDI) Strategy, which was branded Hydrogen South Africa (HySA). HySA was ... Read more
South African hydrogen infrastructure (HySA infrastructure) for fuel cells and energy storage: Overview of a projects portfolio

Author: Bessarabov, D ; Langmi, Henrietta W ; Ren, Jianwei ; Musyoka, Nicholas M Date: May 2017 The paper provides brief introduction to the National South African Program, branded HySA (Hydrogen South Africa) as well as discusses potential business cases for deployment of hydrogen and fuel cell technology in South Africa. This paper ... Read more
Synthesis of a hierarchically structured zeolite-templated carbon starting from fly ash-derived zeolite X

Author: Musyoka, Nicholas M ; Langmi, Henrietta W ; North, Brian C ; Mathe, Mahlanyane K ; Bessarabov, D Date: May 2014 A hierarchically structured zeolite derived from coal fly ash was used as a hard templating agent for the synthesis of a templated carbonaceous material. The samples were characterized using XRD, SEM, TEM, TGA, EDS and BET. The resulting ... Read more
Synthesis of Cr-MOF derived porous carbon for hydrogen storage applications

Author: Musyoka, Nicholas M ; Ren, Jianwei ; Langmi, Henrietta W ; North, Brian C ; Mathe, Mahlanyane K ; Bessarabov, D Date: Jul 2014 Over the recent years, applications of porous metal-organic frameworks (MOFs) in hydrogen storage have received increasing attention in the scientific community. Conversion of organic moiety in MOFs to porous carbon, as well as the use of ... Read more
Synthesis of rGO/Zr-MOF composite for hydrogen storage application

Author: Musyoka, Nicholas M ; Ren, Jianwei ; Langmi, Henrietta W ; North, Brian C ; Mathe, Mahlanyane K ; Bessarabov, D Date: Nov 2017 A composite material consisting of Zr-based metal organic framework (Zr-MOF) and reduced graphene oxide (rGO) was successfully synthesized by an in situ method. The aim of the study was to transfer some of the graphene's attractive properties ... Read more
Synthesis of templated carbon from nanoclay and its zeolitic derivatives for hydrogen storage applications

Author: Musyoka, Nicholas M ; Langmi, Henrietta W ; Ren, Jianwei ; North, Brian C ; Mathe, Mahlanyane K ; Bessarabov, D Date: Jun 2014 Of the many available options for hydrogen storage, carbonaceous materials are gaining increasing attention. In particular, templated carbons have attracted research interest because of the ability to control their pore structure properties ... Read more
Synthesis of templated carbons starting from clay and clay-derived zeolites for hydrogen storage applications

Author: Musyoka, Nicholas M ; Ren, Jianwei ; Langmi, Henrietta W ; Rogers, DEC ; North, Brian C ; Mathe, Mahlanyane K ; Bessarabov, D Date: Oct 2014 Clay and its recrystallized zeolitic derivatives were used in this study as templating agents for carbon nanostructured materials. The conventional nanocasting process that involves impregnation with furfural alcohol and subsequent chemical ... Read more
Thermal treatment induced transition from Zn3(OH)2(BDC)2 (MOF-69c) to Zn4O(BDC)3 (MOF-5)

Author: Ren, Jianwei ; Rogers, DEC ; Segakweng, T ; Langmi, Henrietta W ; North, Brian C ; Mathe, Mahlanyane K ; Bessarabov, D Date: 2013 A simple thermal treatment induced transition from Zn3(OH)2(BDC)2 (MOF-69c) to Zn4O(BDC)3 (MOF-5) is reported. Phase crystallinity, pore characteristics and hydrogen storage capacities of the resulting crystals were investigated. It is shown ... Read more
Zirconium-Based metal organic framework (Zr-MOF) material with high hydrostability for hydrogen storage applications

Author: Ren, Jianwei ; Segakweng, T ; Langmi, Henrietta W ; North, Brian C ; Mathe, Mahlanyane K ; Bessarabov, D Date: Sep 2013 Material-based solutions, such as metal organic frameworks (MOFs), continue to attract increasing attention as viable options for hydrogen storage applications. MOFs are widely regarded as promising materials for hydrogen storage due to their ... Read more

Now showing items 1-19 of 19

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