All Outputs (103)

Development and testing of inorganic membranes for hydrogen separation and purification in a catalytic membrane reactor. (2016)
Thesis
ALKALI, A. 2016. Development and testing of inorganic membranes for hydrogen separation and purification in a catalytic membrane reactor. Robert Gordon University, PhD thesis.

Palladium membranes have been identified as the membranes of choice in hydrogen separation and purification processes due to their infinite selectivity to hydrogen when defect-free. Despite their potentials in hydrogen processes, palladium membranes... Read More about Development and testing of inorganic membranes for hydrogen separation and purification in a catalytic membrane reactor..

Catalytic membrane reactor-separator for environmental applications. (2016)
Thesis
KAJAMA, M.N. 2016. Catalytic membrane reactor-separator for environmental applications. Robert Gordon University [online], PhD thesis. Available from: https://openair.rgu.ac.uk

Flow-through catalytic membrane reactors offer the potential for improved conversions at reduced operating temperature due to product separation and catalyst activity. An experimental work dealing with a forced flow-through membrane reactor is the su... Read More about Catalytic membrane reactor-separator for environmental applications..

Preparation and characterization of inorganic membranes for hydrogen separation. (2016)
Presentation / Conference Contribution
KAJAMA, M.N. NWOGU, N.C. and GOBINA, E. 2016. Preparation and characterization of inorganic membranes for hydrogen separation. International journal of hydrogen energy [online], 41(19): specail issue on progress in hydrogen production and applications: proceedings of 6th International conference on hydrogen production 2015 (ICH2P 2015), 3-6 May 2015, Ontario, Canada, pages 8221-8227. Available from: https://doi.org/10.1016/j.ijhydene.2015.11.179

A tubular commercially available alumina support was coated using the dip coating technique. The objective is to prepare silica and Pt impregnated membranes. Scanning electron microscopy (SEM), energy diffraction X-ray analysis (EDXA), nitrogen adsor... Read More about Preparation and characterization of inorganic membranes for hydrogen separation..

An initial investigation of a nano-composite silica ceramic membrane for hydrogen gas separation and purification. (2016)
Journal Article
NWOGU, N.C., ANYANWU, E.E. and GOBINA, E. 2016. An initial investigation of a nano-composite silica ceramic membrane for hydrogen gas separation and purification. International journal of hydrogen energy [online], 41(19), pages 8228-8235. Available from: https://doi.org/10.1016/j.ijhydene.2015.11.162

The effects of trans-membrane pressure difference on hydrogen recovery are investigated on a preliminary basis. The membrane has been developed for high temperature hydrogen separation from CH4, N2, and Ar gas molecules. Gas permeation and separation... Read More about An initial investigation of a nano-composite silica ceramic membrane for hydrogen gas separation and purification..

Dry reforming of associated natural gas using catalytic membrane reactors. (2015)
Thesis
TEMIMI, A.R. 2015. Dry reforming of associated natural gas using catalytic membrane reactors. Robert Gordon University, PhD thesis. Hosted on OpenAIR [online]. Available from: https://doi.org/10.48526/rgu-wt-1987973

The mitigation and utilization of greenhouse gases, such as carbon dioxide (CO2), are among the most important challenges in the area of energy research. Dry reforming of propane (C3H8) (DRP), which uses both CO2 and C3H8 as reactants, is a potential... Read More about Dry reforming of associated natural gas using catalytic membrane reactors..

Batch process esterification of lactic acid catalysed by cation-exchange resins for the production of environmental-friendly solvent. (2015)
Presentation / Conference Contribution
EDIDIONG, O., HABIBA, S. and GOBINA, E. 2015. Batch process esterification of lactic acid catalysed by cation-exchange resins for the production of environmental-friendly solvent. In Ao, S.I., Gelman, L., Hukins, D.W.L., Hunter, A. and Korsunsky, A.M. (eds.) Proceedings of the 2015 World congress on engineering and computer science 2015 (WCECS 2015), 21-23 October 2015, San Francisco, USA. Lecture notes in engineering and computer science, 2220. Hong Kong: Newswood Limited [online], pages 623-628. Available from: http://www.iaeng.org/publication/WCECS2015/WCECS2015_pp623-628.pdf

In this work, batch wise esterification of lactic acid and ethanol was carried out using different cation-exchange resins including amberlyst 15, amberlyst 16, dowex 50W8x and amberlyst 36 as heterogeneous catalysts. The Zeiss EVO LS10 Scanning elect... Read More about Batch process esterification of lactic acid catalysed by cation-exchange resins for the production of environmental-friendly solvent..

Recovery of VOC from onshore and offshore shuttle tankers using structured membranes. (2015)
Presentation / Conference Contribution
AJAYI, A., SHEHU, H. and GOBINA, E. 2015. Recovery of VOC from onshore and offshore shuttle tankers using structured membranes. In Ao, S.I., Gelman, L., Hukins, D.W.L., Hunter, A. and Korsunsky, A.M. (eds.) Proceedings of the 2015 World congress on engineering and computer science (WCECS 2015), 21-23 October 2015, San Francisco, USA. Lecture notes in engineering and computer science, 2220. Hong Kong: Newswood Limited [online], pages 637-642. Available from: http://www.iaeng.org/publication/WCECS2015/WCECS2015_pp637-642.pdf

The emissions of volatile organic compounds (VOCs) from onshore offshore facilities are studied and an alternative technology for the recovery of methane, propane and butane by the use of membrane technology is explored. Permeation tests were carried... Read More about Recovery of VOC from onshore and offshore shuttle tankers using structured membranes..

Morphological characterization and gas permeation of commercially available ceramic membrane. (2015)
Presentation / Conference Contribution
ORAKWE, I., NWOGU, N.C. and GOBINA, E. 2015. Morphological characterization and gas permeation of commercially available ceramic membrane. In Ao, S.I., Gelman, L., Hukins, D.W.L., Hunter, A. and Korsunsky, A.M. (eds.) Proceedings of the 2015 World congress on engineering and computer science (WCECS 2015), 21-23 October 2015, San Francisco, USA. Lecture notes in engineering and computer science, 2220. Hong Kong: Newswood Limited [online], pages 607-610. Available from: http://www.iaeng.org/publication/WCECS2015/WCECS2015_pp607-610.pdf

This work presents experimental results relating to the structural characterization of a commercially available alumina membrane. A {esc}gc{esc}s-alumina mesoporous tubular membrane has been used. Nitrogen adsorption-desorption, scanning electron mic... Read More about Morphological characterization and gas permeation of commercially available ceramic membrane..

Multi-layer silica ceramic membrane for flue gas and natural gas separations. (2015)
Presentation / Conference Contribution
NWOGU, N.C., ORAKWE, I.R. and GOBINA, E. 2015. Multi-layer silica ceramic membrane for flue gas and natural gas separations. In Ao, S.I., Gelman, L., Hukins, D.W.L., Hunter, A. and Korsunsky, A.M. (eds.) Proceedings of the 2015 World congress on engineering and computer science (WCECS 2015), 21-23 October 2015, San Francisco, USA. Lecture notes in engineering and computer science, 2220. Hong Kong: Newswood Limited [online], pages 651-655. Available from: http://www.iaeng.org/publication/WCECS2015/WCECS2015_pp651-655.pdf

The overall goal of this paper is to foster the development of new membrane technologies to improve manufacturing efficiency and reduce CO2 emissions. Hence, a multi-layered silica ceramic membrane with extremely low defect concentrations has been pr... Read More about Multi-layer silica ceramic membrane for flue gas and natural gas separations..

Resin characterization and tubular membrane transport with single gases for ethyl lactate separations for industrial purposes. (2015)
Journal Article
OKON, E., SHEHU, H., NWOGU, N., KAJAMA, M., ORAKWE, I. and GOBINA, E. 2015. Resin characterization and tubular membrane transport with single gases for ethyl lactate separations for industrial purposes. Journal of materials science and chemical engineering [online], 3(9), pages 8-14. Available from: https://doi.org/10.4236/msce.2015.39002

The dip-coating method has been used to prepare silica membrane. The gas flow rate relationship with the gauge pressure showed a Knudsen type of mechanism of gas transport. The flux was found to decrease with respect to temperature indicating non-act... Read More about Resin characterization and tubular membrane transport with single gases for ethyl lactate separations for industrial purposes..

High molecular permeance dual-layer ceramic membrane for capturing CO2 from flue gas stream. (2015)
Journal Article
NWOGU, N.C., KAJAMA, M.A., ORAKWE, I. and GOBINA, E. 2015. High molecular permeance dual-layer ceramic membrane for capturing CO2 from flue gas stream. Energy and power engineering [online], 7(9), pages 418-425. Available from: https://doi.org/10.4236/epe.2015.79040

With the objective to create technologically advanced materials to be scientifically applicable, dual-layer silica alumina membranes were molecularly fabricated by continuous surface coating silica layers containing hybrid material onto a ceramic por... Read More about High molecular permeance dual-layer ceramic membrane for capturing CO2 from flue gas stream..

Hydrogen separation using Pt-alumina impregnated membrane. (2015)
Journal Article
KAJAMA, M.N., NWOGU, N.C., OKON, E.O., SHEHU, H., ORAKWE, I. and GOBINA, E. 2015. Hydrogen separation using Pt-alumina impregnated membrane. Energy and power engineering [online], 7(9), pages 412-417. Available from: https://doi.org/10.4236/epe.2015.79039

A tubular commercial mesoporous support was used to prepare a Pt impregnated membrane using the reservoir method and tested for moderate temperature (300 C) gas transport of hydrogen (H2), helium (He) and nitrogen (N2) gas molecules. H2 and N2 gas pe... Read More about Hydrogen separation using Pt-alumina impregnated membrane..

A study of gas diffusion characteristics on a micro porous composite silica ceramic membrane. (2015)
Journal Article
NWOGU, N.C., KAJAMA, M. and GOBINA, E. 2015. A study of gas diffusion characteristics on a micro porous composite silica ceramic membrane. Composite structures [online], 134, pages 1044-1050. Available from: https://doi.org/10.1016/j.compstruct.2015.07.121

The purpose of this study is to investigate gas permeation behaviour of five gases (CO2, He, H2, N2 and Ar) across two silica modified ceramic membranes, Membrane Y and Membrane Z. An examination of the variations in their layer thickness and flow ra... Read More about A study of gas diffusion characteristics on a micro porous composite silica ceramic membrane..

Structural characteristic and permeation of gases through a supported silica inorganic ceramic membrane. (2015)
Presentation / Conference Contribution
NWOGU, N.C., KAJAMA, M.N., OSUEKE, G. and GOBINA, E. 2015. Structural characteristic and permeation of gases through a supported silica inorganic ceramic membrane. In Ao, S.I., Gelman, L., Hukins, D.W.L., Hunter, A. and Korsunsky, A.M. (eds.) Proceedings of the 2015 World congress on engineering (WCE 2015), 1-3 July 2015, London, UK. Lecture notes in engineering and computer science, 2217. Hong Kong: Newswood Limited [online], pages 245-248. Available from: http://www.iaeng.org/publication/WCE2015/WCE2015_pp245-248.pdf

The present paper describes the synthesis and hydrodynamic properties of a surface-modified ceramic membrane composed of a porous support which consists of gamma alumina and a titania wash-coat. Single gas permeation through the membranes was measure... Read More about Structural characteristic and permeation of gases through a supported silica inorganic ceramic membrane..

An initial study of single gas permeation using a commercial alumina membrane. (2015)
Presentation / Conference Contribution
ORAKWE, I.R., NWOGU, N.C., KAJAMA, M., SHEHU, H., OKON, E. and GOBINA, E. 2015. An initial study of single gas permeation using a commercial alumina membrane. In Ao, S.I., Gelman, L., Hukins, D.W.L., Hunter, A. and Korsunsky, A.M. (eds.) Proceedings of the 2015 World congress on engineering (WCE 2015), 1-3 July 2015, London, UK. Lecture notes in engineering and computer science, 2218. Hong Kong: Newswood Limited [online], pages 737-739. Available from: http://www.iaeng.org/publication/WCE2015/WCE2015_pp737-739.pdf

An initial study has been conducted using a commercially available alumina membrane. The study is based on single gas permeation method involving He, O2, CO2 and N2. The effect of trans membrane pressure drop, gas molecular mass, kinectic diameter, p... Read More about An initial study of single gas permeation using a commercial alumina membrane..

Hydrodynamic performance in mesoporous silica membrane for lactic acid and esterifiecation. (2015)
Presentation / Conference Contribution
OKON, E.P., SHEHU, H., KAJAMA, M.N, ORIMOLOYE, A.O., NWOGU, N.C., ORAKWE, I.R. and GOBINA, E. 2015. Hydrodynamic performance in mesoporous silica membrane for lactic acid and esterifiecation. In Ao, S.I., Gelman, L., Hukins, D.W.L., Hunter, A. and Korsunsky, A.M. (eds.) Proceedings of the 2015 World congress on engineering (WCE 2015), 1-3 July 2015, London, UK. Lecture notes in engineering and computer science, 2218. Hong Kong: Newswood Limited [online], pages 781-784. Available from: http://www.iaeng.org/publication/WCE2015/WCE2015_pp781-784.pdf

Ethyl Lactate has a lot of applications in different industries including food, pharmaceutical and agricultural processes. The esterification process of lactic acid and ethanol is a highly equilibrium-controlled reaction. The selective removal of one... Read More about Hydrodynamic performance in mesoporous silica membrane for lactic acid and esterifiecation..

Initial study of heterogeneous catalysts behaviour and carrier gas permeation with catalytic inorganic ceramic membrane for lactic acid esterification applications. (2015)
Presentation / Conference Contribution
OKON, E. and GOBINA, E. 2015. Initial study of heterogeneous catalysts behaviour and carrier gas permeation with catalytic inorganic ceramic membrane for lactic acid esterification applications. In Ao, S.I., Gelman, L., Hukins, D.W.L., Hunter, A. and Korsunsky, A.M. (eds.) Proceedings of the 2015 World congress on engineering (WCE 2015), 1-3 July 2015, London, UK. Lecture notes in engineering and computer science, 2218. Hong Kong: Newswood Limited [online], pages 1287-1291. Available from: http://www.iaeng.org/publication/WCE2015/WCE2015_pp1287-1291.pdf

Inorganic membranes continue to attract a lot of attention in various fields including industry and academia, due to the great potential they have shown in various applications. Recently, some studies have focused on the water -permeable metallic mem... Read More about Initial study of heterogeneous catalysts behaviour and carrier gas permeation with catalytic inorganic ceramic membrane for lactic acid esterification applications..

The use of nano-composite ceramic membranes for gas separations. (2015)
Presentation / Conference Contribution
SHEHU, H., OKON, E. and GOBINA, E. 2015. The use of nano-composite ceramic membranes for gas separations. In Ao, S.I., Gelman, L., Hukins, D.W.L., Hunter, A. and Korsunsky, A.M. (eds.) Proceedings of the 2015 World congress on engineering (WCE 2015), 1-3 July 2015, London, UK. Lecture notes in engineering and computer science, 2218. Hong Kong: Newswood Limited [online], pages 1225-1229. Available from: http://www.iaeng.org/publication/WCE2015/WCE2015_pp1225-1229.pdf

The preparation of composite ceramic inorganic membranes using different types of support with the aim to achieving high selectivity for lower hydrocarbons was studied. The pore size of the unmodified support was determined. Upon modification of the... Read More about The use of nano-composite ceramic membranes for gas separations..

Propylene oxidation using Pt-alumina impregnated catalytic membrane reactor. (2015)
Presentation / Conference Contribution
KAJAMA, M., NWOGU, N. and GOBINA, E. 2015. Propylene oxidation using Pt-alumina impregnated catalytic membrane reactor. In Ao, S.I., Gelman, L., Hukins, D.W.L., Hunter, A. and Korsunsky, A.M. (eds.) Proceedings of the 2015 World congress on engineering (WCE 2015), 1-3 July 2015, London, UK. Lecture notes in engineering and computer science, 2218. Hong Kong: Newswood Limited [online], pages 900-903. Available from: http://www.iaeng.org/publication/WCE2015/WCE2015_pp900-903.pdf

Pt/{esc}gc{esc}s-Al2O3 membrane was prepared through the evaporative-crystallization deposition method for volatile organic compounds (VOCs) destruction. SEM-EDXA observation, BET measurement, permeability assessment and the catalytic oxidation of pr... Read More about Propylene oxidation using Pt-alumina impregnated catalytic membrane reactor..

High performance valuation of CO2 gas separation ceramic membrane system. (2015)
Presentation / Conference Contribution
NWOGU, N.C., KAJAMA, M.N., OSUEKE, G. and GOBINA, E. 2015. High performance valuation of CO2 gas separation ceramic membrane system. In Ao, S.I., Gelman, L., Hukins, D.W.L., Hunter, A. and Korsunsky, A.M. (eds.) Proceedings of the 2015 World congress on engineering (WCE 2015), 1-3 July 2015, London, UK. Lecture notes in engineering and computer science, 2218. Hong Kong: Newswood Limited [online], pages 824-827. Available from: http://www.iaeng.org/publication/WCE2015/WCE2015_pp824-827.pdf

Atmospheric carbon dioxide emissions are considered as the greatest environmental challenge the world is facing today. The tasks to control the emissions include the recovery of CO2 from flue gas. This concern has been improved due to recent advances... Read More about High performance valuation of CO2 gas separation ceramic membrane system..