Now showing items 2-21 of 41

  • Catalytic membrane reactors for synthesis gas production from natural gas via partial oxidation. 

    Olsen, Susanne Kelly (Robert Gordon University School of Engineering, 2004-05)
    Natural gas obtained during the extraction of liquid hydrocarbons is often undesired due to the lack of infrastructure to transport the natural gas to an onshore location. As a result the natural gas is often flared ...
  • Characterisation of inorganic composite ceramic membrane for lactic acid esterification processes. 

    Okon, Edidiong; Shehu, Habiba; Gobina, Edward (Trans Tech Publications http://dx.doi.org/10.4028/www.scientific.net/AMR.1102.99, 2015-05-01)
    OKON, E., SHEHU, H. and GOBINA, E. 2015. Characterisation of inorganic composite ceramic membrane for lactic acid esterification processes. Advanced materials research, 1102, Coddet, C. (ed.) Selected papers from the 2015 international conference on metal, ceramic and composite materials (ICMCCM-2015), 24-25 January 2015, Shanghai, China. Pfaffikon, Switzerland: Trans Tech Publications [online], pages 99-102. Available from: http://dx.doi.org/10.4028/www.scientific.net/AMR.1102.99.
    The use of inorganic composite membranes in chemical industries has received a lot of attention more recently due to a number of exceptional advantages including thermal stability and robustness. Inorganic membranes can ...
  • Composite inorganic membranes for hydrogen reaction, separation and purification. 

    El-Zarouk, Khaled Mohamed (Robert Gordon University School of Engineering, 2007-01)
    Silica-alumina composite membranes for hydrogen separation and high temperature chemical reactions were prepared using both conventional and modified dip-coating techniques. These were deposited on commercially available ...
  • Direct synthesis gas conversion to alcohols and hydrocarbons using a catalytic membrane reactor. 

    Umoh, Reuben Mfon (Robert Gordon University Faculty of Design and Technology, School of Engineering, 2009-06-01)
    UMOH, R.M. 2009. Direct synthesis gas conversion to alcohols and hydrocarbons using a catalytic membrane reactor. Robert Gordon University, PhD thesis.
    In this work, inorganic membranes with highly dispersed metallic catalysts on macroporous titania-washcoated alumina supports were produced, characterized and tested in a catalytic membrane reactor. The reactor, operated ...
  • Esterification of lactic acid and ethanol using heterogenous catalysts for the production of a bio-based chemical. 

    Okon, Edidiong; Habiba, Shehu; Gobina, Edward (Newswood Limited, International Association of Engineers, IAENG http://www.iaeng.org/publication/IMECS2017/, 2017-03-15)
    OKON, E., HABIBA, S. and GOBINA, E. 2017. Esterification of lactic acid and ethanol using heterogenous catalysts for the production of a bio-based chemical. Lecture notes in engineering and computer science: Proceedings of the international multiconference of engineers and computer scientists 2017 Vol II (IMECS 2017) [online], 15 - 17 March 2017, Kowloon, Hong Kong. Hong Kong: Newswood Ltd, pages 811-817. Available from: http://www.iaeng.org/publication/IMECS2017/IMECS2017_pp811-817.pdf
    In this work, the batch process esterification reaction was carried out at 80 oC using different types of heterogeneous catalysts. The heterogeneous resin catalysts used for the analysis were amberlyst 15, amberlyst 36, ...
  • Evaluation of the performance of α-alumina nano-porous ceramic composite membrane for esterification applications in petroleum refinery. 

    Okon, Edidiong; Shehu, Habiba; Gobina, Edward (Elsevier https://doi.org/10.1016/j.cattod.2017.05.089, 2017-06-10)
    OKON, E., SHEHU, H. and GOBINA, E. 2017. Evaluation of the performance of α-alumina nano-porous ceramic composite membrane for esterification applications in petroleum refinery. Catalysis today [online], In Press. Available from: https://doi.org/10.1016/j.cattod.2017.05.089
    The carrier gas permeation performance through α-alumina nano-porous ceramic membrane was investigated in this study. The four carrier gases used for the study were argon (Ar), helium (He), nitrogen (N2) and carbon dioxide ...
  • Experimental study of gas flux characteristics in a CO2 selective silica based modified membrane. 

    Nwogu, Ngozi Claribelle; Kajama, Mohammed; Gobina, Edward (IAEME http://www.iaeme.com/MasterAdmin/UploadFolder/IJARET_05_08_001/IJARET_05_08_001.pdf, 2014-08-20)
    NWOGU, N.C., KAJAMA, M.N. and GOBINA, E. 2014. Experimental study of gas flux characteristics in a CO2 selective silica based modified membrane. International journal of advanced research in engineering and technology (IJARET) [online], 5(8), pages 1-9. Available from: http://www.iaeme.com/MasterAdmin/Journal_uploads/IJARET/VOLUME_5_ISSUE_8/IJARET_05_08_001.pdf
    The purpose of membrane gas separation for CO2 capture from flue gas process is to reduce greenhouse emissions as well as associated environmental challenges globally. This study looks at gas separation in a single gas ...
  • Gas permeation behaviour of single and mixed gas components using as asymmetric ceramic membrane. 

    Nwogu, Ngozi Claribelle; Gobina, Edward (World Academy of Science, Engineering and Technology (WASET) http://scholar.waset.org/1999.2/10001725, 2015)
    NWOGU, N. and GOBINA, E., 2015. Gas permeation behaviour of single and mixed gas components using an asymmetric ceramic membrane. Proceedings of the World Academy of Science, Engineering and Technology, Vol 9 (6), pp. 677-681.
    A dip-coating process has been used to form an asymmetric silica membrane with improved membrane performance and reproducibility. First, we deposited repeatedly silica on top of a commercial alumina membrane support to ...
  • Gas permeation study using ceramic membranes. 

    Kajama, Mohammed; Nwogu, Ngozi Claribelle; Gobina, Edward (Canadian Centre of Science and Education http://dx.doi.org/10.5539/eer.v4n3p43, 2014-07-11)
    KAJAMA, M.N., NWOGU, N.C. and GOBINA, E., 2014. Gas permeation study using porous ceramic membranes. Energy and Environment Research, Vol 4 (3), pp. 43-49.
    A 6000 nm ceramic membrane was repaired with boehmite solution (ALOOH) through the repeat dip-coating technique. The permeance of hydrogen (H2) and carbon dioxide (CO2) were obtained through the membrane in relation to ...
  • Gas transport and characterization of inorganic ceramic membrane for lactic acid esterification. 

    Okon, Edidiong; Habiba, Shehu; Gobina, Edward (International Association of Engineers., 2014-10)
    OKON, E., HABIBA, S. and GOBINA, E., 2014. Gas transport and characterization of inorganic ceramic membrane for lactic acid esterification. In: S.I. AO, C. DOUGLAS, W.S. GRUNDFEST and J. BURGSTONE, EDS. Proceedings of the World Congress on Engineering and Computer Science 2014. 22-24 October, 2014. San Francisco: International Association of Engineers. Volume II, pp. 590-594. ISBN 9789881925374.
    Ethyl lactate is an important organic ester, which is biodegradable in nature and widely used as food additive, perfumery, flavor chemicals and solvent. Inorganic porous ceramic membrane has shown a lot of advantages in ...
  • High molecular permeance dual-layer ceramic membrane for capturing CO2 from flue gas stream. 

    Nwogu, Ngozi Claribelle; Kajama, Mohammed; Orakwe, Ifeyinwa; Gobina, Edward (Scientific Research Publishing https://dx.doi.org/10.4236/epe.2015.79040, 2015-08-25)
    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://dx.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 ...
  • High performance valuation of CO2 gas separation ceramic membrane system. 

    Nwogu, Ngozi Claribelle; Kajama, Mohammed; Osueke, Godson; Gobina, Edward (Newswood Limited http://www.iaeng.org/publication/WCE2015/WCE2015_pp824-827.pdf, 2015-07-01)
    NWOGU, N.C., KAJAMA, M.N., OSUEKE, G. and GOBINA, E. 2015. High performance valuation of CO2 gas separation ceramic membrane system. Lecture notes in engineering and computer science: proceedings of the world congress on engineering 2015 (WCE 2015) [online], Vol II, 1-3 July 2015, London, UK. Hong Kong: Newswood Limited, 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 ...
  • Hydrodynamic performance in mesoporous silica membrane for lactic acid and esterifiecation. 

    Okon, Edidiong; Shehu, Habiba; Kajama, Mohammed; Orimoloye, Adesola; Nwogu, Ngozi Claribelle; Orakwe, Ifeyinwa; Gobina, Edward (Newswood Limited http://www.iaeng.org/publication/WCE2015/WCE2015_pp781-784.pdf, 2015-07-01)
    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. Lecture notes in engineering and computer science: Proceedings of the world congress on engineering 2015 (WCE 2015) [online], Vol II, 1-3 July 2015, London, UK. Hong Kong: Newswood Limited, 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. ...
  • Hydrogen separation using inorganic membranes. 

    Kajama, Mohammed; Nwogu, Ngozi Claribelle; Gobina, Edward (Trans Tech Publications http://dx.doi.org/10.4028/www.scientific.net/AMR.1102.91, 2015-05-01)
    KAJAMA, M.N., NWOGU, N.C. and GOBINA, E. 2015. Hydrogen separation using inorganic membranes. Advanced materials research, 1102: Coddet, C. (ed.) Selected papers from the 2015 international conference on metal, ceramic and composite materials (ICMCCM-2015), 24-25 January 2015, Shanghai, China. Pfaffikon, Switzerland: Trans Tech Publications [online], pages 91-94. Available from: http://dx.doi.org/10.4028/www.scientific.net/AMR.1102.91.
    Gas permeation of hydrogen (H2) and nitrogen (N2) were obtained from 30 and 6000 nm pore diameter tubular commercial alumina ceramic membranes at 0.05 to 1.00 bar and 298 K. Flow rates of up to 3.279 and 2.296 l/min were ...
  • Hydrogen separation using pt-alumina impregnated membrane. 

    Kajama, Mohammed; Nwogu, Ngozi Claribelle; Okon, Edidiong; Shehu, Habiba; Orakwe, Ifeyinwa; Gobina, Edward (Scientific Research Publishing https://dx.doi.org/10.4236/epe.2015.79039, 2015-08-25)
    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, pages 412-417. Available from: https://dx.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 ...
  • Hydrogen separation using silica-based composite membranes. 

    Kajama, Mohammed; Nwogu, Ngozi Claribelle; Gobina, Edward (Trans Tech Publications http://dx.doi.org/10.4028/www.scientific.net/AMR.1051.107, 2014-10-01)
    KAJAMA, M.N., NWOGU, N.C. and GOBINA, E. 2014. Hydrogen separation using silica-based composite membranes. Advanced materials research, 1051: Bhatnagar, A.K. (ed.) Selected papers from the 2014 international conference on green materials and environmental engineering (GMEE 2014), 21-22 September 2014, Hong Kong. Pfaffikon, Switzerland: Trans Tech Publications [online], pages 107-111. Available from: http://dx.doi.org/10.4028/www.scientific.net/AMR.1051.107
    Silica sol-gel membranes have been developed for moderate temperature (300 °C) separation of hydrogen (H2) from nitrogen (N2), methane (CH4) and argon (Ar) gas molecules. Tubular ceramic support with 15 nm nominal pore ...
  • Hydrogen transport through dense and porous membranes for fuel cell applications. 

    Nwogu, Ngozi Claribelle; Alkali, A.; Gobina, Edward (Atlantis Press http://dx.doi.org/10.2991/itms-15.2015.40, 2015-03-01)
    NWOGU, N.C., ALKALI, A. and GOBINA, E. 2015. Hydrogen transport through dense and porous membranes for fuel cell applications. Advances in computer science research, 34, Proceedings of the 1st international conference on industrial technology and management science (ITMS 2015), 27-28 March 2015, Tianjin, China. Amsterdam: Atlantis press [online], pages 157-160. Available from: http://dx.doi.org/10.2991/itms-15.2015.40
    In this work the design of a nano structured ceramic membrane is carried out for fuel cell applications. However the innovation is that a membrane porous network is modified through its immersion in silica based solution ...
  • An initial investigation of a nano-composite silica ceramic membrane for hydrogen gas separation and purification. 

    Nwogu, Ngozi Claribelle; Anyanwu, Emmanuel Enyioma; Gobina, Edward (Elsevier http://dx.doi.org/10.1016/j.ijhydene.2015.11.162, 2016-01-27)
    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: http://dx.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. ...
  • Initial study of heterogeneous catalysts behaviour and carrier gas permeation with catalytic inorganic ceramic membrane for lactic acid esterification applications. 

    Okon, Edidiong; Gobina, Edward (Newswood Limited http://www.iaeng.org/publication/WCE2015/WCE2015_pp1287-1291.pdf, 2015-07-01)
    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. Lecture notes in engineering and computer science: proceedings of the world congress on engineering 2015 (WCE 2015) [online], Vol II, 1-3 July 2015, London, UK. Hong Kong: Newswood Limited, 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 ...
  • An initial study of single gas permeation using a commercial alumina membrane. 

    Orakwe, Ifeyinwa; Nwogu, Ngozi Claribelle; Kajama, Mohammed; Shehu, Habiba; Okon, Edidiong; Gobina, Edward (Newswood Limited http://www.iaeng.org/publication/WCE2015/WCE2015_pp737-739.pdf, 2015-07-01)
    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. Lecture notes in engineering and computer science: Proceedings of the world congress on engineering 2015 (WCE 2015) [online], 1-3 July 2015, London, UK. Hong Kong: Newswood Limited, 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 ...