publications

2004-2007

Journal Publications (*corresponding author(s); where applicable/available it is indicated how often the paper has been cited according to ISI Web of Knowledge, 22 January 2009)

E. van Steen*, E.L. Viljoen, M. Claeys
A DFT-study on the acidity of Mo–O–Al-clusters
Journal of Molecular Catalysis A: Chemical, 266 (1-2) (2007) 254-259

N.S. Govender, M. Janse van Vuuren, M. Claeys, E. van Steen*
Importance of the Usage Ratio in Iron-Based Fischer-Tropsch Synthesis with Recycle
Ind. Eng. Chem. Res. 45(25) (2006) 8629-8633

D. Barkhuizen, E.I. Mabaso, E. Viljoen, C. Welker, M. Claeys*, E. van Steen*, J.C.Q. Fletcher*
Experimental approaches to the preparation of supported metal nano-particles
Pure & Applied Chemistry 78/9 (2006) 1759-1769

Y.Q. Zhuang, M. Claeys, E. van Steen*
Novel synthesis route for egg-shell, egg-white and egg-yolk type of cobalt on silica catalysts
Applied Catalysis A: General 301 (2006) 138-142

E. van Steen*, M. Claeys, M.E. Dry, J. van de Loosdrecht, E. L. Viljoen, J.L. Visagie
Stability of nano-crystals: Thermodynamic analysis of oxidation and re-reduction of cobalt in water/hydrogen mixtures
Journal of Physical Chemistry B 109 (2005) 3575-3577, cited: 28x

Conference Proceedings

Full Papers (*corresponding author(s); where applicable/available it is indicated how often the paper has been cited according to SCOPUS 10 January 2009)

E.I. Mabaso, R.P. Mogorosi, M.J. Malagas, M. Claeys, E. van Steen*
Silica as a chemical promoter in Fe-based catalysts
Proc. “International Pittsburgh Coal Conference 2007” (ISBN#: 1-890977-24-1), Johannesburg, South Africa, September 10-17, 2007, O20-1/1-1/6

L.D. Biquiza, M. Claeys, E. van Steen*
The role of hydrocarbons in the feed for the Fischer-Tropsch synthesis under ”supercritical conditions””
Proc. “International Pittsburgh Coal Conference 2007” (ISBN#: 1-890977-24-1), Johannesburg, South Africa, September 10-17, 2007, O44-3/1-3/4

A. Blignaut, M. Claeys, E. van Steen*
Influence of potassium on silica-supported iron catalysts for the Fischer-Tropsch synthesis
Proc. “International Pittsburgh Coal Conference 2007” (ISBN#: 1-890977-24-1), Johannesburg, South Africa, September 10-17, 2007, O20-3/1-3/6

Y.Q. Zhuang, M. Claeys, E. van Steen*
Activity of novel egg-shell Fischer-Tropsch cobalt catalysts
Proc. “International Pittsburgh Coal Conference 2007” (ISBN#: 1-890977-24-1), Johannesburg, South Africa, September 10-17, 2007, O26-3/1-3/12

P.S. Cairns, M.E. Dry, E. van Steen, M. Claeys*
Copper as selectivity promoter in iron-based Fischer-Tropsch synthesis?
Proc. “International Pittsburgh Coal Conference 2006” (ISBN#: 1-890977-23-3), Pittsburgh/PA, September 25-28, 2006, 2-2/1 – 2-2/9

M. Claeys*, M.E. Dry, E. van Steen, P. Gibson, T. Motjope, J. Visagie, A. van Zyl
Selectivity Improvement via Nitriding of Iron-Based Fischer-Tropsch Catalysts
Proc. “International Pittsburgh Coal Conference 2006” (ISBN#: 1-890977-23-3), Pittsburgh/PA, September 25-28, 2006, P6-3/1 – P6-3/11

E.I. Mabaso, E. van Steen, M. Claeys*
Fischer-Tropsch synthesis on supported iron crystallites of different size
Proc. DGMK-SCI Conference “Synthesis Gas Chemistry”, Dresden, Germany, 2006, (eds. S. Ernst, A. Jess, F. Nees, C. Perego, M. Rupp, E. Santacesaria, DGMK Tagungsbericht 2006-4, ISBN 3-936418-57-8, DGMK Hamburg), (2006) 93-100

C. Welker, J.R. Moss, E. van  Steen, M. Claeys*
Closing the gap between homogeneous and heterogeneous Fischer-Tropsch synthesis
Proc. DGMK-SCI Conference “Synthesis Gas Chemistry”, Dresden, Germany, 2006, (eds. S. Ernst, A. Jess, F. Nees, C. Perego, M. Rupp, E. Santacesaria, DGMK Tagungsbericht 2006-4, ISBN 3-936418-57-8, DGMK Hamburg), (2006) 223-230

M. Claeys*, H. Schulz
Effects of internal mass transfer on activity and selectivity in iron based Fischer-Tropsch synthesis
Prepr. Pap.-Am. Chem. Soc., Div. Pet. Chem. 49(2) (2004) 195, invited lecture held at ACS-Meeting, Anaheim/California, 2004

Abstracts

C. Welker, E. van Steen, M. Claeys*
Fischer-Tropsch Activity and Selectivity Studies on Ruthenium-based Model Catalysts
Lecture held at “CATSA Conference 2007”, Richards Bay, South Africa, November 2007, O11 in book of abstracts, awarded best oral presentation of the conference

Y.Q. Zhuang, M. Claeys, E. van Steen*
Activity and Selectivity of Novel Egg-shell Cobalt Catalysts under Fischer-Tropsch Synthesis
Lecture held at “CATSA Conference 2007”, Richards Bay, South Africa, November 2007, O30 in book of abstracts

A. Blignaut, M. Claeys, E. van Steen*
Influence of basicity in Fischer-Tropsch synthesis over supported iron-based catalysts
Poster presented at “CATSA Conference 2007”, Richards Bay, South Africa, November 2007, P23 in book of abstracts

E. L. Viljoen*, E. van Steen, J. van de Loosdrecht, M. Claeys
The influence of the acidity characteristics of a cobalt catalyst on the Fischer-Tropsch synthesis selectivity
Poster presented at the IIIrd International Conference “Catalysis: Fundamentals and Applications”, Novosibirsk, Russia, 04-08 July 2007-08-22

E.I. Mabaso, C. Welker, E. van Steen, M. Claeys*
Synthesis of supported nano-sized iron and ruthenium particles by means of micelle techniques and their properties in CO hydrogenation
Poster presented at “ICMR workshop on structure and properties of nanomaterials”, University of Zululand, South Africa, 29July-01August 2007

C. Welker, J.R. Moss, E. van Steen, M. Claeys*
Effect of Crystallite Size in Ru-based Fischer-Tropsch Synthesis
Poster presented at “CATSA Conference 2006”, Mosselbay, South Africa, November 2006

P.S. Cairns, M.E. Dry, E, van Steen, M. Claeys*
Copper as a Selectivity Promoter in Iron Based Fischer-Tropsch Synthesis?
Lecture held at “CATSA Conference 2006”, Mosselbay, South Africa, November 2006

V. Cheang, E. van Steen, M. Claeys*
Preparation of Iron-based Supported Model Catalysts for Fischer-Tropsch Synthesis
Poster presented at “CATSA Conference 2006”, Mosselbay, South Africa, November 2006

C. Welker, J.R. Moss, E. van Steen, M. Claeys*
Fischer-Tropsch synthesis on organometallic model catalysts
Lecture held at "Organometallic chemistry and their application 2006" (OATA), Cape Town, South Africa, August 2006, L8 in book of abstracts

C. Welker, J.R. Moss, E. van Steen, M. Claeys*
Fischer-Tropsch synthesis on organometallic model catalysts
Poster prestented at "37th International Conference on Coordination Chemistry (ICCC)", Cape Town, South Africa, August 2006, p. 449 in book of abstracts

C. Welker, J.R. Moss, E. van Steen, M. Claeys*
Fischer-Tropsch synthesis on organometallic model catalysts
Poster presented at "17th International Homogeneous Catalysis Symposium", Sun City, South Africa, August 2006, A56 in book of abstracts

C. Welker, J.R. Moss, E. van Steen, M. Claeys*
Effect of Crystallite Size in Ru-based Fischer-Tropsch Synthesis
Poster presented at “SAIChE R & D Day 2006”, Stellenbosch, South Africa, June 2006, P1 in book of abstracts, awarded best poster of the conference    

Y.Q. Zhuang, M. Claeys, E. van Steen*
Structured Cobalt Catalysts for Fischer-Tropsch Synthesis
Poster presented at “SAIChE R & D Day 2006”, Stellenbosch, South Africa, June 2006

P.S. Cairns, M.E. Dry, M. Claeys*
Copper as a Selectivity Promoter in Iron Based Fischer-Tropsch Synthesis?
Lecture held at “SAIChE R & D Day 2006”, Stellenbosch, South Africa, June 2006

F. Rößner*, A. Rausch, E.I. Mabaso, M. Claeys, E. v. Steen
"Präparation und Charakterisierung mono- und bimetallischer Nanopartikel mit der inversen Mizelltechnik"
Lecture held at “39. Jahrestreffen Deutscher Katalytiker“, in Tagungshandbuch Dechema e.V. (Hrsg.), Frankfurt/Germany, 2006, S. 41-42

E.L. Viljoen, M. Claeys, E. van Steen*
Characterisation of Mo-Al clusters using DFT
Lecture held at “CATSA conference 2005”, Midrand, South Africa, November 2005, O18 in book of abstracts

D. Barkhuizen, I. Mabaso, E.L. Viljoen, C. Welker, M. Claeys*, E. van Steen*, J.C.Q. Fletcher*
Supported-metal nano-particle catalyst preparation
Lecture held at “CATSA conference 2005”, Midrand, South Africa, November 2005, O35 in book of abstracts

P.S. Cairns, M.E. Dry, M. Claeys*
Copper as selectivity promoter in iron based Fischer-Tropsch synthesis?
Poster presented at “CATSA conference 2005”, Midrand, South Africa, November 2005, P1 in book of abstracts

C. Welker, J.R. Moss, E. Van Steen, M. Claeys*
Effect of crystallite size in Ru-based Fischer-Tropsch synthesis
Poster presented at “CATSA conference 2005”, Midrand, South Africa, November 2005, P24 in book of abstracts

Y.Q. Zhuang, M. Claeys, E. van Steen*
Novel synthesis route for egg-shell, egg-white and egg-yolk type of cobalt on silica catalysts
Poster presented at “CATSA conference 2005”, Midrand, South Africa, November 2005, P47 in book of abstracts, awarded best poster of the conference

E. I. Mabaso, E. van Steen, M. Claeys*
Effect of metal crystallite size in supported iron based Fischer-Tropsch catalysts
Lecture held at 19th NACS (North American Catalysis Society Meeting), Philadelphia/PA, 2005

C. Welker, J.R. Moss, E. van Steen, M. Claeys*
Ruthenium complexes as catalysts for Fischer-Tropsch Synthesis
Lecture held at 2nd Cape Organometallic Symposium, Cape Town, 2005

C. Welker, J.R. Moss, E. van Steen, M. Claeys*
Modelling of reaction mechanisms for different Ruthenium model catalysts for Fischer-Tropsch synthesis
Lecture held at INORG 2005, Pietermaritzburg/South Africa, 2005

J. Swart*, E. van Steen, M. Claeys, F.F. Prinsloo
Study of iron as Fischer-Tropsch catalyst
Lecture held at “CATSA conference 2004”, Potchefstroom, South Africa, November 2004, P51 in book of abstracts

J.N. Kleinsmidt, E. van Steen*, M. Claeys, F.F. Prinsloo
The effect of crystallite size and temperature on the morphology of carbon nanotubes
Lecture held at “CATSA conference 2004”, Potchefstroom, South Africa, November 2004, O27 in book of abstracts

E.I. Mabaso, E. van Steen, M. Claeys*
Nano-sized iron crystallites for Fischer-Tropsch synthesis
Lecture held at “CATSA conference 2004”, Potchefstroom, South Africa, November 2004, O26 in book of abstracts