Author: Norhaszjana Awang Hasan
Publisher:
ISBN:
Category : Catalysts
Languages : en
Pages : 74
Book Description
Nowadays, the atmospheric concentration of carbon dioxide (CO2) had been increased due to the globalization and technology created by human activities. CO2 is one of the major contributors to greenhouse effects which will leads to global warming. Therefore alternative routes should be taken to overcome this problem. One of the best remediation is to transform CO2 into useful hydrocarbon by using photoreduction. Photoreduction is one of the methods which can be used to reduce the concentration of CO2 released to the atmosphere. The aim of this study was to find a new catalyst produced with the best method in photoreduction process. Catalyst plays an important role to accomplish specific tasks with greater efficiency and speed. The metal oxides, Alumina (Al2O3) was chosen to be use in this research which was loaded with Titania (TiO2). Al2O3-TiO2 catalyst was prepared by using two different methods which are sol gel and hydrothermal method. The prepared catalysts were analyzed and characterized by using Scanning Electron Microscope (SEM), Fourier Transform Infrared Spectroscopy (FTIR), X-Ray diffraction (XRD) and Brunauer-Emmett-Teller (BET) method. Experimental results demonstrated that hydrothermal method was a promising technique for preparing Al2O3-TiO2 photocatalysts as it fulfilled the requirement properties to enhance the photocatalytic activity of TiO2 in the photoreduction process. Based on SEM analysis, the surface morphology of Al2O3-TiO2 catalyst exhibits well arranged aggregates with many small spherical particles. Meanwhile FTIR analysis, the presence of Al-O bonds in the TiO2 powder was successfully obtained as the peaks of 947.75 cm-1 fall in the general range of Al-O vibrations. Other than that, based on XRD pattern of Al2O3-TiO2 it revealed the existence of polymorphs anatase TiO2 which usually shows greatly superior in photoactivity of TiO2. Most importantly, based on BET analysis, the prepared Al2O3-TiO2 catalysts show a great crystal growth with 153.8599 m2/g specific surface area and 8.8 nm of pore size diameter. A nano size material leads to improvement in the electron hole pair separation and enhance the photoactivity of TiO2.
Preparation and Characterization of Alumina Loaded Titania in the Photoreduction of CO2
Author: Norhaszjana Awang Hasan
Publisher:
ISBN:
Category : Catalysts
Languages : en
Pages : 74
Book Description
Nowadays, the atmospheric concentration of carbon dioxide (CO2) had been increased due to the globalization and technology created by human activities. CO2 is one of the major contributors to greenhouse effects which will leads to global warming. Therefore alternative routes should be taken to overcome this problem. One of the best remediation is to transform CO2 into useful hydrocarbon by using photoreduction. Photoreduction is one of the methods which can be used to reduce the concentration of CO2 released to the atmosphere. The aim of this study was to find a new catalyst produced with the best method in photoreduction process. Catalyst plays an important role to accomplish specific tasks with greater efficiency and speed. The metal oxides, Alumina (Al2O3) was chosen to be use in this research which was loaded with Titania (TiO2). Al2O3-TiO2 catalyst was prepared by using two different methods which are sol gel and hydrothermal method. The prepared catalysts were analyzed and characterized by using Scanning Electron Microscope (SEM), Fourier Transform Infrared Spectroscopy (FTIR), X-Ray diffraction (XRD) and Brunauer-Emmett-Teller (BET) method. Experimental results demonstrated that hydrothermal method was a promising technique for preparing Al2O3-TiO2 photocatalysts as it fulfilled the requirement properties to enhance the photocatalytic activity of TiO2 in the photoreduction process. Based on SEM analysis, the surface morphology of Al2O3-TiO2 catalyst exhibits well arranged aggregates with many small spherical particles. Meanwhile FTIR analysis, the presence of Al-O bonds in the TiO2 powder was successfully obtained as the peaks of 947.75 cm-1 fall in the general range of Al-O vibrations. Other than that, based on XRD pattern of Al2O3-TiO2 it revealed the existence of polymorphs anatase TiO2 which usually shows greatly superior in photoactivity of TiO2. Most importantly, based on BET analysis, the prepared Al2O3-TiO2 catalysts show a great crystal growth with 153.8599 m2/g specific surface area and 8.8 nm of pore size diameter. A nano size material leads to improvement in the electron hole pair separation and enhance the photoactivity of TiO2.
Publisher:
ISBN:
Category : Catalysts
Languages : en
Pages : 74
Book Description
Nowadays, the atmospheric concentration of carbon dioxide (CO2) had been increased due to the globalization and technology created by human activities. CO2 is one of the major contributors to greenhouse effects which will leads to global warming. Therefore alternative routes should be taken to overcome this problem. One of the best remediation is to transform CO2 into useful hydrocarbon by using photoreduction. Photoreduction is one of the methods which can be used to reduce the concentration of CO2 released to the atmosphere. The aim of this study was to find a new catalyst produced with the best method in photoreduction process. Catalyst plays an important role to accomplish specific tasks with greater efficiency and speed. The metal oxides, Alumina (Al2O3) was chosen to be use in this research which was loaded with Titania (TiO2). Al2O3-TiO2 catalyst was prepared by using two different methods which are sol gel and hydrothermal method. The prepared catalysts were analyzed and characterized by using Scanning Electron Microscope (SEM), Fourier Transform Infrared Spectroscopy (FTIR), X-Ray diffraction (XRD) and Brunauer-Emmett-Teller (BET) method. Experimental results demonstrated that hydrothermal method was a promising technique for preparing Al2O3-TiO2 photocatalysts as it fulfilled the requirement properties to enhance the photocatalytic activity of TiO2 in the photoreduction process. Based on SEM analysis, the surface morphology of Al2O3-TiO2 catalyst exhibits well arranged aggregates with many small spherical particles. Meanwhile FTIR analysis, the presence of Al-O bonds in the TiO2 powder was successfully obtained as the peaks of 947.75 cm-1 fall in the general range of Al-O vibrations. Other than that, based on XRD pattern of Al2O3-TiO2 it revealed the existence of polymorphs anatase TiO2 which usually shows greatly superior in photoactivity of TiO2. Most importantly, based on BET analysis, the prepared Al2O3-TiO2 catalysts show a great crystal growth with 153.8599 m2/g specific surface area and 8.8 nm of pore size diameter. A nano size material leads to improvement in the electron hole pair separation and enhance the photoactivity of TiO2.
Preparation and Characterization of Titanium Dioxide (TIO2) Catalytic Pellet Using Alumina (AL2O3) Support for Detection of Volatile Organic Compounds (VOCS)
Author: Mooi Chen Cheah
Publisher:
ISBN:
Category : Chemical engineering
Languages : en
Pages : 236
Book Description
Publisher:
ISBN:
Category : Chemical engineering
Languages : en
Pages : 236
Book Description
Preparation and Characterization of Amorphous Alumina, Titania and Zirconia Films
Author: John M. Woulbroun
Publisher:
ISBN:
Category :
Languages : en
Pages : 162
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 162
Book Description
Development of Transition Metal-loaded Titania for Photoreduction of Carbon Dioxide
Author: Yixiang Zeng
Publisher:
ISBN:
Category : Chemical engineering
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Chemical engineering
Languages : en
Pages :
Book Description
Synthesis, Characterization, Modeling, and Catalysis of Titania, Alumina, Zeolite, and Manganese Oxide Materials
Author: Edward John Neth
Publisher:
ISBN:
Category :
Languages : en
Pages : 460
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 460
Book Description
Preparation and Characterization of Alumina Thin Films and Preparation and Characterization of Copper(II) Oxide
Author: William Joseph DeSisto
Publisher:
ISBN:
Category :
Languages : en
Pages : 242
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 242
Book Description
Photo-catalytic Reduction of Carbon Dioxide Over Alumina Doped Titanium Dioxide Catalyst
Author: Muhamad Daud Azizul Rahman
Publisher:
ISBN:
Category : Carbon dioxide
Languages : en
Pages : 42
Book Description
Carbon dioxide (CO2) is a major source of greenhouse gas effect which causes the increasing in the Earth's temperature. The continuously increasing CO2 level into the atmosphere is one of the most serious problems with regard to the greenhouse effect. One of the remediation to overcome this problem by using Photo-reduction process with prepared catalysts assisted by UV light. In this process, CO2 was converted to methanol (CH3OH) as a main product. In this study, the influence of the parameters on the catalytic activity with and without visible light irradiation and also effect of percentage of Al2O3 loading on TiO2 were focused. The catalyst was prepared using sol-gel method. The percentage of Al2O3 loading on TiO2 were set in range of 1.50 wt.% - 5.0 wt. %. In photo-reduction process, highly industrial CO2 was first flowed through NaOH solution with presence of Al2O3-TiO2 catalyst in the reactor. The main product was analyzed using High Performance Liquid Chromatography (HPLC). The results show that for maximum loading of Al2O3 into TiO2 catayst, the performance of photocatalytic activity was enhanced due to the metals will act as electron traps, facilitating electron-hole separation and promote the interfacial electron transfer process. In photo-reduction process, the conversion of CO2 into methanol was more effective with UV light compared to the process without UV light. As a conclusion, with presence of higher percentage of Al2O3 on TiO2 and UV light, the reduction of CO2 can be done successfully.
Publisher:
ISBN:
Category : Carbon dioxide
Languages : en
Pages : 42
Book Description
Carbon dioxide (CO2) is a major source of greenhouse gas effect which causes the increasing in the Earth's temperature. The continuously increasing CO2 level into the atmosphere is one of the most serious problems with regard to the greenhouse effect. One of the remediation to overcome this problem by using Photo-reduction process with prepared catalysts assisted by UV light. In this process, CO2 was converted to methanol (CH3OH) as a main product. In this study, the influence of the parameters on the catalytic activity with and without visible light irradiation and also effect of percentage of Al2O3 loading on TiO2 were focused. The catalyst was prepared using sol-gel method. The percentage of Al2O3 loading on TiO2 were set in range of 1.50 wt.% - 5.0 wt. %. In photo-reduction process, highly industrial CO2 was first flowed through NaOH solution with presence of Al2O3-TiO2 catalyst in the reactor. The main product was analyzed using High Performance Liquid Chromatography (HPLC). The results show that for maximum loading of Al2O3 into TiO2 catayst, the performance of photocatalytic activity was enhanced due to the metals will act as electron traps, facilitating electron-hole separation and promote the interfacial electron transfer process. In photo-reduction process, the conversion of CO2 into methanol was more effective with UV light compared to the process without UV light. As a conclusion, with presence of higher percentage of Al2O3 on TiO2 and UV light, the reduction of CO2 can be done successfully.
Preparation and Characterization of Titania-supported Iron and Alkali-promoted Titania-supported Iron Catalysts for Ammonia Synthesis
Author: Arthur Nobile
Publisher:
ISBN:
Category : Ammonia
Languages : en
Pages : 480
Book Description
Publisher:
ISBN:
Category : Ammonia
Languages : en
Pages : 480
Book Description
Surface and Nanomolecular Catalysis
Author: Ryan Richards
Publisher: CRC Press
ISBN: 1420015753
Category : Science
Languages : en
Pages : 555
Book Description
Using new instrumentation and experimental techniques that allow scientists to observe chemical reactions and molecular properties at the nanoscale, the authors of Surface and Nanomolecular Catalysis reveal new insights into the surface chemistry of catalysts and the reaction mechanisms that actually occur at a molecular level during catalys
Publisher: CRC Press
ISBN: 1420015753
Category : Science
Languages : en
Pages : 555
Book Description
Using new instrumentation and experimental techniques that allow scientists to observe chemical reactions and molecular properties at the nanoscale, the authors of Surface and Nanomolecular Catalysis reveal new insights into the surface chemistry of catalysts and the reaction mechanisms that actually occur at a molecular level during catalys
Strong Metal-support Interactions
Author: R. T. K. Baker
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 258
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 258
Book Description