trans-Carbonylchlorobis[tris(2-methyl- phenyl)phosphito]rhodium(I)
- Meijboom, Reinout, Muller, Alfred, Roodt, Andreas
- Authors: Meijboom, Reinout , Muller, Alfred , Roodt, Andreas
- Date: 2004
- Subjects: Crystallography , Ligands (Biochemistry)
- Type: Article
- Identifier: uj:5913 , ISSN 1600-5368 , http://hdl.handle.net/10210/8072
- Description: Please refer to full text to view abstract
- Full Text:
- Authors: Meijboom, Reinout , Muller, Alfred , Roodt, Andreas
- Date: 2004
- Subjects: Crystallography , Ligands (Biochemistry)
- Type: Article
- Identifier: uj:5913 , ISSN 1600-5368 , http://hdl.handle.net/10210/8072
- Description: Please refer to full text to view abstract
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Tris(4-fluorophenyl)phosphine selenide
- Muller, Alfred, Meijboom, Reinout
- Authors: Muller, Alfred , Meijboom, Reinout
- Date: 2007
- Subjects: Transition metal complexes , Phosphorous bonds , Crystallography
- Type: Article
- Identifier: uj:5947 , ISSN 1600-5368 , http://hdl.handle.net/10210/8153
- Description: Please refer to full text to view abstract
- Full Text:
- Authors: Muller, Alfred , Meijboom, Reinout
- Date: 2007
- Subjects: Transition metal complexes , Phosphorous bonds , Crystallography
- Type: Article
- Identifier: uj:5947 , ISSN 1600-5368 , http://hdl.handle.net/10210/8153
- Description: Please refer to full text to view abstract
- Full Text:
trans-Dichloridobis[diphenyl(4-vinylphenyl) phosphane-kP]palladium(II)
- Authors: Meijboom, Reinout
- Date: 2011
- Subjects: X-ray crystallography , Crystallography , Palladium compounds
- Type: Article
- Identifier: uj:5871 , ISSN 1600-5368 , http://hdl.handle.net/10210/7969
- Description: Please refer to full text to view abstract
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- Authors: Meijboom, Reinout
- Date: 2011
- Subjects: X-ray crystallography , Crystallography , Palladium compounds
- Type: Article
- Identifier: uj:5871 , ISSN 1600-5368 , http://hdl.handle.net/10210/7969
- Description: Please refer to full text to view abstract
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(Acetylacetonato-k2O,O0)carbonyl- {dicyclohexyl[4-(dimethylamino)phenyl]- phosphane-kP}rhodium(I)
- Davis, Wade L., Meijboom, Reinout
- Authors: Davis, Wade L. , Meijboom, Reinout
- Date: 2011
- Subjects: Ligands , Acetylacetonate , Rhodium , Crystallography
- Type: Article
- Identifier: uj:5857 , ISSN 1600-5368 , http://hdl.handle.net/10210/7954
- Description: Please refer to full text to view abstract
- Full Text:
- Authors: Davis, Wade L. , Meijboom, Reinout
- Date: 2011
- Subjects: Ligands , Acetylacetonate , Rhodium , Crystallography
- Type: Article
- Identifier: uj:5857 , ISSN 1600-5368 , http://hdl.handle.net/10210/7954
- Description: Please refer to full text to view abstract
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Di-μ-iodido-bis{[dicyclohexyl(phenyl)-phosphine-κP](pyridine-κN)silver(I)}
- Omondi, Bernard, Meijboom, Reinout
- Authors: Omondi, Bernard , Meijboom, Reinout
- Date: 2009
- Subjects: X-ray crystallography , Crystallography , Silver(I) complexes , Ligands
- Type: Article
- Identifier: uj:5953 , ISSN 1600-5368 , http://hdl.handle.net/10210/8159
- Description: Please refer to full text to view abstract
- Full Text:
- Authors: Omondi, Bernard , Meijboom, Reinout
- Date: 2009
- Subjects: X-ray crystallography , Crystallography , Silver(I) complexes , Ligands
- Type: Article
- Identifier: uj:5953 , ISSN 1600-5368 , http://hdl.handle.net/10210/8159
- Description: Please refer to full text to view abstract
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Biodiesel production from waste vegetable oils over MgO/Al2O3 catalyst
- Sithole, Thembi, Jalama, Kalala, Meijboom, Reinout
- Authors: Sithole, Thembi , Jalama, Kalala , Meijboom, Reinout
- Date: 2014
- Subjects: Waste vegetable oils , Biodiesel fuels industry , Vegetable oils as fuel , Vegetable oils - Industrial applications
- Type: Article
- Identifier: uj:5029 , ISSN 1662-7482 , http://hdl.handle.net/10210/13549
- Description: MgO/Al2O3 catalysts with 10 and 20 wt.% MgO loadings have been prepared by incipient wetness impregnation method. A low-surface area alumina with small pore sizes was used as catalyst support to stabilise most of the MgO particles on the external surface area of the support. The prepared catalysts were subsequently tested in the conversion of a waste vegetable oil to biodiesel. The waste vegetable oil conversion was found to increase with the increase in reaction temperature, reaction time and MgO loading in the catalyst.
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- Authors: Sithole, Thembi , Jalama, Kalala , Meijboom, Reinout
- Date: 2014
- Subjects: Waste vegetable oils , Biodiesel fuels industry , Vegetable oils as fuel , Vegetable oils - Industrial applications
- Type: Article
- Identifier: uj:5029 , ISSN 1662-7482 , http://hdl.handle.net/10210/13549
- Description: MgO/Al2O3 catalysts with 10 and 20 wt.% MgO loadings have been prepared by incipient wetness impregnation method. A low-surface area alumina with small pore sizes was used as catalyst support to stabilise most of the MgO particles on the external surface area of the support. The prepared catalysts were subsequently tested in the conversion of a waste vegetable oil to biodiesel. The waste vegetable oil conversion was found to increase with the increase in reaction temperature, reaction time and MgO loading in the catalyst.
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Biodiesel production over nano-MgO supported on titania
- Mguni, Liberty L, Meijboom, Reinout, Jalama, Kalala
- Authors: Mguni, Liberty L , Meijboom, Reinout , Jalama, Kalala
- Date: 2012
- Subjects: Nano-MgO , Transesterification , Titania , Biodiesel
- Type: Article
- Identifier: uj:6058 , ISBN 2010-376X , http://hdl.handle.net/10210/10473
- Description: Please refer to full text to view abstract
- Full Text:
- Authors: Mguni, Liberty L , Meijboom, Reinout , Jalama, Kalala
- Date: 2012
- Subjects: Nano-MgO , Transesterification , Titania , Biodiesel
- Type: Article
- Identifier: uj:6058 , ISBN 2010-376X , http://hdl.handle.net/10210/10473
- Description: Please refer to full text to view abstract
- Full Text:
Effect of space velocity on alumina supported cobalt catalyst performance for fischer-tropsch reaction
- Khangale, Rodney P., Meijboom, Reinout, Jalama, Kalala
- Authors: Khangale, Rodney P. , Meijboom, Reinout , Jalama, Kalala
- Date: 2016
- Subjects: Co/Al2O3 catalyst , Fischer-Tropsch , Space velocity
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/214368 , uj:21272 , Citation: Khangale, R.P., Meijboom, R & Jalama, K. 2016. Effect of space velocity on alumina supported cobalt catalyst performance for fischer-tropsch reaction.
- Description: Abstract: Co/ɣ-Al2O3 catalyst was prepared by incipient wetness impregnation of the ɣ-Al2O3 support using an aqueous solution of cobalt nitrate. The catalyst was characterized by XRD, BET and TPR. It was evaluated in a fixed-bed reactor to determine the effect of space velocity on the CO conversion, CO conversion rate, CH4 selectivity and C5+ selectivity during Fischer-Tropsch reaction. CO conversion decreased while the CO conversion rate linearly increased with increasing the space velocity. The CH4 selectivity was not significantly affected by the space velocity as it fluctuated between 5 and 6%.
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- Authors: Khangale, Rodney P. , Meijboom, Reinout , Jalama, Kalala
- Date: 2016
- Subjects: Co/Al2O3 catalyst , Fischer-Tropsch , Space velocity
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/214368 , uj:21272 , Citation: Khangale, R.P., Meijboom, R & Jalama, K. 2016. Effect of space velocity on alumina supported cobalt catalyst performance for fischer-tropsch reaction.
- Description: Abstract: Co/ɣ-Al2O3 catalyst was prepared by incipient wetness impregnation of the ɣ-Al2O3 support using an aqueous solution of cobalt nitrate. The catalyst was characterized by XRD, BET and TPR. It was evaluated in a fixed-bed reactor to determine the effect of space velocity on the CO conversion, CO conversion rate, CH4 selectivity and C5+ selectivity during Fischer-Tropsch reaction. CO conversion decreased while the CO conversion rate linearly increased with increasing the space velocity. The CH4 selectivity was not significantly affected by the space velocity as it fluctuated between 5 and 6%.
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Dichlorido[2-diphenylphosphanyl-N- (pyridin-3-ylmethyl)benzylidenamine k²P,N]platinum(II)
- Chiririwa, Haleden, Meijboom, Reinout
- Authors: Chiririwa, Haleden , Meijboom, Reinout
- Date: 2011
- Subjects: Platinum complexes , Crystallography
- Type: Article
- Identifier: uj:5883 , ISSN 1600-5368 , http://hdl.handle.net/10210/7999
- Description: Please refer to full text to view abstract
- Full Text:
- Authors: Chiririwa, Haleden , Meijboom, Reinout
- Date: 2011
- Subjects: Platinum complexes , Crystallography
- Type: Article
- Identifier: uj:5883 , ISSN 1600-5368 , http://hdl.handle.net/10210/7999
- Description: Please refer to full text to view abstract
- Full Text:
Waste vegetable oils to biodiesel over Al₂O₃ –supported SnO₂ catalyst : effect of support pore size
- Zulu, Vusumuzi C., Vunain, Ephraim, Meijboom, Reinout, Jalama, Kalala
- Authors: Zulu, Vusumuzi C. , Vunain, Ephraim , Meijboom, Reinout , Jalama, Kalala
- Date: 2015-07-01
- Subjects: Biodiesel , Waste vegetable oils
- Type: Article
- Identifier: uj:5132 , ISBN 9789881404701 , http://hdl.handle.net/10210/14098
- Description: The main aim of this study was to investigate the catalytic properties of Al₂O₃-supported SnO₂ for the conversion of waste vegetable oil into biodiesel. The effect of support pore size on waste oil conversion was investigated at 100 and 200 °C by using α-alumina (with larger pore size) and γ-alumina (with smaller pore size) respectively as support for SnO₂. The effect of pore-size on conversion was found to depend on the operating temperature. At low temperature, i.e. 100 °C, higher conversion for waste vegetable oil was measured on SnO₂ catalyst supported on α-Al₂O₃ than the catalyst supported by γ-Al₂O₃. This effect became less significant at 200 °C. It was also observed that the oil conversion increased with an increase in reaction temperature and reaction time.
- Full Text:
- Authors: Zulu, Vusumuzi C. , Vunain, Ephraim , Meijboom, Reinout , Jalama, Kalala
- Date: 2015-07-01
- Subjects: Biodiesel , Waste vegetable oils
- Type: Article
- Identifier: uj:5132 , ISBN 9789881404701 , http://hdl.handle.net/10210/14098
- Description: The main aim of this study was to investigate the catalytic properties of Al₂O₃-supported SnO₂ for the conversion of waste vegetable oil into biodiesel. The effect of support pore size on waste oil conversion was investigated at 100 and 200 °C by using α-alumina (with larger pore size) and γ-alumina (with smaller pore size) respectively as support for SnO₂. The effect of pore-size on conversion was found to depend on the operating temperature. At low temperature, i.e. 100 °C, higher conversion for waste vegetable oil was measured on SnO₂ catalyst supported on α-Al₂O₃ than the catalyst supported by γ-Al₂O₃. This effect became less significant at 200 °C. It was also observed that the oil conversion increased with an increase in reaction temperature and reaction time.
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Bis[dicyclohexyl(phenyl)phosphane-κP]- silver(I) perchlorate dichloromethane monosolvate
- Munyaneza, Apollinaire, Meijboom, Reinout, Omondi, Bernard
- Authors: Munyaneza, Apollinaire , Meijboom, Reinout , Omondi, Bernard
- Date: 2011
- Subjects: X-ray crystallography , Crystallography , Phosphane ligands , Hydrogen bonding
- Type: Article
- Identifier: uj:5952 , ISSN 1600-5368 , http://hdl.handle.net/10210/8158
- Description: Please refer to full text to view abstract
- Full Text:
- Authors: Munyaneza, Apollinaire , Meijboom, Reinout , Omondi, Bernard
- Date: 2011
- Subjects: X-ray crystallography , Crystallography , Phosphane ligands , Hydrogen bonding
- Type: Article
- Identifier: uj:5952 , ISSN 1600-5368 , http://hdl.handle.net/10210/8158
- Description: Please refer to full text to view abstract
- Full Text:
trans-Carbonylchloridobis[dicyclohexyl-(4-isopropylphenyl)phosphane]- rhodium(I) acetone monosolvate.
- Makhoba, Sizwe, Muller, Alfred, Meijboom, Reinout, Omondi, Bernard
- Authors: Makhoba, Sizwe , Muller, Alfred , Meijboom, Reinout , Omondi, Bernard
- Date: 2011
- Subjects: Metal complexes , Phosphane ligands , Crystallography
- Type: Article
- Identifier: uj:5946 , ISSN 1600-5368 , http://hdl.handle.net/10210/8141
- Description: Please refer to full text to view abstract
- Full Text:
- Authors: Makhoba, Sizwe , Muller, Alfred , Meijboom, Reinout , Omondi, Bernard
- Date: 2011
- Subjects: Metal complexes , Phosphane ligands , Crystallography
- Type: Article
- Identifier: uj:5946 , ISSN 1600-5368 , http://hdl.handle.net/10210/8141
- Description: Please refer to full text to view abstract
- Full Text:
trans-Carbonylchloridobis[tris(naphthalen-1-yl)phosphane-kP]rhodium(I) acetone trisolvate.
- Authors: Meijboom, Reinout
- Date: 2011
- Subjects: Rhodium complexes , Crystallography
- Type: Article
- Identifier: uj:5944 , ISSN 1600-5368 , http://hdl.handle.net/10210/8139
- Description: Please refer to full text to view abstract
- Full Text:
- Authors: Meijboom, Reinout
- Date: 2011
- Subjects: Rhodium complexes , Crystallography
- Type: Article
- Identifier: uj:5944 , ISSN 1600-5368 , http://hdl.handle.net/10210/8139
- Description: Please refer to full text to view abstract
- Full Text:
Isomorphism in monomeric 1:3 complexes of silver(I) salts with tri-p-tolylphosphine.
- Omondi, Bernard, Venter, Gertruida J. S., Roodt, Andreas, Meijboom, Reinout
- Authors: Omondi, Bernard , Venter, Gertruida J. S. , Roodt, Andreas , Meijboom, Reinout
- Date: 2009
- Subjects: Silver salts , Crystallography
- Type: Article
- Identifier: uj:5954 , ISSN 0108-7681 , http://hdl.handle.net/10210/8160
- Description: Please refer to full text to view abstract
- Full Text:
- Authors: Omondi, Bernard , Venter, Gertruida J. S. , Roodt, Andreas , Meijboom, Reinout
- Date: 2009
- Subjects: Silver salts , Crystallography
- Type: Article
- Identifier: uj:5954 , ISSN 0108-7681 , http://hdl.handle.net/10210/8160
- Description: Please refer to full text to view abstract
- Full Text:
Biodiesel production over ZnO/TiO₂ catalyst : effect of co-solvent, temperature and reaction time
- Mahangani, Ndanganeni, Vunain, Ephraim, Meijboom, Reinout, Jalama, Kalala
- Authors: Mahangani, Ndanganeni , Vunain, Ephraim , Meijboom, Reinout , Jalama, Kalala
- Date: 2015-07-01
- Subjects: Biodiesel , Hexane , Waste vegetable oils
- Type: Article
- Identifier: uj:5127 , ISBN 9789881404701 , http://hdl.handle.net/10210/14090
- Description: The aim of this work was to produce biodiesel from waste vegetable oil over ZnO/TiO2 catalysts as well as investigating the effect of co-solvent (hexane), reaction temperature and time on waste vegetable oil conversion to biodiesel. Production of biodiesel from virgin oil is still a downfall in commercial processes due to high cost. Thus, the process of producing biodiesel from waste vegetable oil over a TiO2-supported ZnO catalyst was studied in the absence and the presence of hexane as co-solvent respectively. The conversion of waste vegetable oil was found to increase with temperature and reaction time. The highest conversion that has been achieved was 99.1% at a temperature of 200 °C after 15 min of reaction for the reaction using hexane as co-solvent. The use of hexane as co-solvent was found to increase the oil conversion at lower reaction temperature and no effect was observed at higher temperatures.
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- Authors: Mahangani, Ndanganeni , Vunain, Ephraim , Meijboom, Reinout , Jalama, Kalala
- Date: 2015-07-01
- Subjects: Biodiesel , Hexane , Waste vegetable oils
- Type: Article
- Identifier: uj:5127 , ISBN 9789881404701 , http://hdl.handle.net/10210/14090
- Description: The aim of this work was to produce biodiesel from waste vegetable oil over ZnO/TiO2 catalysts as well as investigating the effect of co-solvent (hexane), reaction temperature and time on waste vegetable oil conversion to biodiesel. Production of biodiesel from virgin oil is still a downfall in commercial processes due to high cost. Thus, the process of producing biodiesel from waste vegetable oil over a TiO2-supported ZnO catalyst was studied in the absence and the presence of hexane as co-solvent respectively. The conversion of waste vegetable oil was found to increase with temperature and reaction time. The highest conversion that has been achieved was 99.1% at a temperature of 200 °C after 15 min of reaction for the reaction using hexane as co-solvent. The use of hexane as co-solvent was found to increase the oil conversion at lower reaction temperature and no effect was observed at higher temperatures.
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trans-Carbonylchloridobis[tris(4-chlorophenyl) phosphane]rhodium(I) acetone monosolvate
- Burgoyne, Andrew R., Meijboom, Reinout, Muller, Alfred, Omondi, Bernard O.
- Authors: Burgoyne, Andrew R. , Meijboom, Reinout , Muller, Alfred , Omondi, Bernard O.
- Date: 2010
- Subjects: X-ray crystallography , Crystallography , Vaska complexes
- Type: Article
- Identifier: http://ujcontent.uj.ac.za8080/10210/389598 , uj:5932 , ISSN 1600-5368 , http://hdl.handle.net/10210/8124
- Description: Please refer to full text to view abstract
- Full Text:
- Authors: Burgoyne, Andrew R. , Meijboom, Reinout , Muller, Alfred , Omondi, Bernard O.
- Date: 2010
- Subjects: X-ray crystallography , Crystallography , Vaska complexes
- Type: Article
- Identifier: http://ujcontent.uj.ac.za8080/10210/389598 , uj:5932 , ISSN 1600-5368 , http://hdl.handle.net/10210/8124
- Description: Please refer to full text to view abstract
- Full Text:
Effect of calcination temperature and MgO crystallite size on MgO/TiO2 catalyst system for soybean transesterification
- Mguni, Liberty L, Meijboom, Reinout, Jalama, Kalala
- Authors: Mguni, Liberty L , Meijboom, Reinout , Jalama, Kalala
- Date: 2012
- Subjects: Calcination temperature , Transesterification , Soybean
- Type: Article
- Identifier: uj:6289 , ISBN 2010-376X , http://hdl.handle.net/10210/9895
- Description: Please refer to full text to view abstract
- Full Text:
- Authors: Mguni, Liberty L , Meijboom, Reinout , Jalama, Kalala
- Date: 2012
- Subjects: Calcination temperature , Transesterification , Soybean
- Type: Article
- Identifier: uj:6289 , ISBN 2010-376X , http://hdl.handle.net/10210/9895
- Description: Please refer to full text to view abstract
- Full Text:
Bis(dicyclohexylphenylphosphine)- silver(I) nitrate
- Burgoyne, Andrew R., Meijboom, Reinout, Muller, Alfred, Omondi, Bernard
- Authors: Burgoyne, Andrew R. , Meijboom, Reinout , Muller, Alfred , Omondi, Bernard
- Date: 2010
- Subjects: X-ray crystallography , Crystallography , Silver(I) salts , Phosphine complexes
- Type: Article
- Identifier: uj:5931 , ISSN 1600-5368 , http://hdl.handle.net/10210/8123
- Description: Please refer to full text to view abstract
- Full Text:
- Authors: Burgoyne, Andrew R. , Meijboom, Reinout , Muller, Alfred , Omondi, Bernard
- Date: 2010
- Subjects: X-ray crystallography , Crystallography , Silver(I) salts , Phosphine complexes
- Type: Article
- Identifier: uj:5931 , ISSN 1600-5368 , http://hdl.handle.net/10210/8123
- Description: Please refer to full text to view abstract
- Full Text:
(Acetylacetonato-j2O,O0)carbonyl[tris(4- chlorophenyl)phosphane-jP]rhodium(I)
- Antonels, Nathan C., Meijboom, Reinout
- Authors: Antonels, Nathan C. , Meijboom, Reinout
- Date: 2012
- Subjects: Metal-organic compounds , Rhodium compounds , Carbonyl compounds
- Type: Article
- Identifier: uj:5993 , ISSN 1600-5368 , http://hdl.handle.net/10210/8626
- Description: Please refer to full text to view abstract
- Full Text:
- Authors: Antonels, Nathan C. , Meijboom, Reinout
- Date: 2012
- Subjects: Metal-organic compounds , Rhodium compounds , Carbonyl compounds
- Type: Article
- Identifier: uj:5993 , ISSN 1600-5368 , http://hdl.handle.net/10210/8626
- Description: Please refer to full text to view abstract
- Full Text:
Di-μ-thiocyanato-bis[bis(tri-p-tolylphosphine) silver(I)] 0.35-hydrate
- Khumalo, Nozipho M., Meijboom, Reinout, Muller, Alfred, Omondi, Bernard
- Authors: Khumalo, Nozipho M. , Meijboom, Reinout , Muller, Alfred , Omondi, Bernard
- Date: 2010
- Subjects: X-ray crystallography , Crystallography , Silver compounds
- Type: Article
- Identifier: uj:5938 , ISSN 1600-5368 , http://hdl.handle.net/10210/8133
- Description: Please refer to full text to view abstract
- Full Text:
- Authors: Khumalo, Nozipho M. , Meijboom, Reinout , Muller, Alfred , Omondi, Bernard
- Date: 2010
- Subjects: X-ray crystallography , Crystallography , Silver compounds
- Type: Article
- Identifier: uj:5938 , ISSN 1600-5368 , http://hdl.handle.net/10210/8133
- Description: Please refer to full text to view abstract
- Full Text: