http://chipre.iqm.unicamp.br/~rbuffon/todos.jpg

Research Group of Dr. Regina Buffon

Instituto de Química
Universidade Estadual de Campinas - Unicamp
Caixa Postal 6154 - Campinas, SP, 13084-971, Brazil

E-Mail:
rbuffon@iqm.unicamp.br
Fax: +55 - 19 - 3521 30 23
Phone: +55 - 19 - 3521 30 90
Lab Phone: +55 - 19 - 3521 30 43

 

Research interests

I. Catalysis by Organometallic Systems

*Synthesis and characterization of heterogenized organometallic and related compounds using various approaches:

    - Surface Organometallic Chemistry

    - The Sol-gel method

    - Coordination on functionalized inorganic oxides

*Applications to:

    - Olefin metathesis

    - Hydroformylation/carbonylation of unsaturated substrates
    - Olefin epoxidation
    - C-C bond formation

II. Spectroscopic Characterization of Tin-modified Heterogeneous Metathesis Catalysts

III. Olefin Metathesis over Metal Oxide Catalysts

IV. Biphasic Systems for Catalyst Separation


Graduate Students

Vanderlei Inácio de Paula (vipaula@iqm.unicamp.br)

Isaias Barbosa Aragão (aragao.isaias@gmail.com)

Maria das Graças de Oliveira e Silva (mgo_silva@yahoo.com.br)

Renan Zorzatto de Morais (renanzorzatto@gmail.com)

Roberto Bineli Muterle (bineli@iqm.unicamp.br)

Rafael Lisandro Pereira Rocha (rafaelisandro@hotmail.com)

Undergraduate Students

Stephanie Fernanda Fulaz (ste.fulaz@gmail.com)

 


Former Students/Post-Docs

Marcelo J. Della Mura Jannini, MSc. 1998
José Daniel Ribeiro de Campos, MSc. 1999, DSc. 2003 (Lecturer, UnUCET – UEG,
daniel.campos@ueg.br)
Silvana I. Wolke, DSc. 2000 (Lecturer, UFRGS – silvana.wolke@ufrgs.br)
Sergio Teixeira, MSc. 2001
Eduardo dos Santos Tada, MSc. 2003

Vanderlei Inácio de Paula, MSc. 2004

Cíntia Akemi Sato, MSc. 2007

José Ari Milton Cavalcante, MSc. 2007

Sandra Cecília Bannwart (scbannwart@iqm.unicamp.br)

Suryyia Manzoor, DSc. 2013 (aroma_zs@yahoo.com)

Dr. Ricardo Gomes da Rosa, Post-Doc (Lecturer, UFRGS - rgomes@iq.ufrgs.br )
Dr. Kai Dallmann, Post-Doc (Sasol GmbH
- kai_dallmann@hotmail.com )
Dr. Cristiane Barbieri Rodella  (LNLS – cristiane@lnls.br)

Cooperations

Prof. Ulf  Schuchardt (Unicamp - ulf@iqm.unicamp.br )
Dr. Daniela Zanchet (Unicamp –
daniela@iqm.unicamp.br)
Dr. Anuar Abras (UFMG -
aabras@fisica.ufmg.b r)
Prof. Watson Loh (Unicamp -
wloh@iqm.unicamp.br )
Dr. Regina Mara Silva Pereira (Lecturer, UNIBAN -
rpereira02@hotmail.com )


Recent Publications

 

1. The Effect of Water on the Rhodium Catalyzed Carbonylation of Isopropylallylamine, R. G. da Rosa, J.D.R. de Campos and R. Buffon, J. Mol. Catal. A: Chemical, 153, 2000, 19-24;

2. On the Interaction of Schrock Mo-Alkylidene Complexes with the Surface of Inorganic Oxides, S.I. Wolke and R. Buffon, J. Mol. Catal. A: Chemical, 160, 2000, 181-187;

3. Sol-gel Derived Hybrid Materials as Heterogeneous Catalysts for the Epoxidation of Olefins, K. Dallmann and R. Buffon, Catal. Commun., 1, 2000, 09-13;

4. Surface Organometallic Chemistry of Vanadium(V): Reactivity of (t-BuN=)VNp3 Towards Silica, S.I. Wolke, R. Buffon and U.P. Rodrigues Filho, J. Organomet. Chem., 625, 2001, 101-107;

5. Hydrogenation  and Isomerization of 1-Hexene with Ru3(CO)12 and Ru3(CO)9(PPh3)3 , K. Dallmann and R. Buffon, J. Mol. Catal. A: Chemical, 172, 2001, 81-87;

6. Catalyst Recycling in the Epoxidation of Alkenes Catalyzed by MoO2(acac)2 through Precipitation with Poly(ethylene oxide), K. Dallmann, R. Buffon and W. Loh, J. Mol.Catal. A: Chemical, 178, 2002, 43-46;

7. Molybdenum-based Epoxidation Catalysts Heterogenized in Silica Matrixes via the Sol-Gel Method, S. Teixeira, K. Dallmann, U. Schuchardt and R. Buffon, J. Mol.Catal. A: Chemical, 182-183, 2002, 167-173;

8. Hydrogenation  and Isomerization of 1-Hexene with Ru3(CO)9(PPh2CH2CH 2Si(OMe)3)3   Immobilized in Silica Matrices via the Sol-Gel Method, K. Dallmann and R. Buffon, J. Mol. Catal. A: Chemical, 185, 2002, 187-194;

9. Germanium and Silicon Compounds as Promoters for Re2O7/SiO2-Al2O3 Metathesis Catalysts, R. Buffon, I.J. Marochio, C.B. Rodella and J.C. Mol, J. Mol. Catal. A: Chemical, 190, 2002, 171-176;

10. Entrapment of Rhodium Complexes in Inorganic or Hybrid Matrices via the Sol-Gel Method, J.D.R. de Campos and R. Buffon, New J. Chem., 27, 2003, 446-451.

11. New Iridium(I) Complexes with Labile Ligands: Reactivity and Structural Characterization by Atmospheric Pressure Mass and Tandem Mass (APCI-MS/MS) Spectrometry, R.M.S. Pereira, V.I. Paula, R. Buffon, D.M. Tomazela and M.N. Eberlin, Inorg. Chim. Acta, 357, 2004, 2100-2106.

12. Characterization and Catalytic Performance of Rhenium Oxide-based Catalysts Supported on Borated Silica-Alumina, C.B. Rodella and R. Buffon, Appl. Catal. A: General, 263, 2004, 203-211.

13. Encapsulation of Vanadium Complexes in Inorganic or Hybrid Matrices via the Sol-Gel Method: Application to the Epoxidation of Allylic Alcohols, R.B. Pellegrino and R. Buffon, J. Braz. Chem. Soc., 15, 2004, 527-531.

14. Metathesis of Methyl Oleate over Rhenium Oxide-based Catalysts Supported on Borated Silica-Alumina: Catalyst Recycling, C.B. Rodella, J.A.M. Cavalcante and R. Buffon, Appl. Catal. A: General, 274, 2004, 213-217.

15. Olefin Hydroformylation by Sol-Gel Entrapped Rhodium Catalysts Bearing Hydrolysable Ligands, J.D.R de Campos and R. Buffon, J. Braz. Chem. Soc.,16, 2005, 17-23.

16.  Palladium Catalyzed Carbonylative Cyclization of Baylis Hillman Adducts. An Efficient Approach for the Stereoselective Synthesis of 3-alkenylphtalides. F. Coelho, D. Veronese, C. Pavam, V.I.de Paula and R. Buffon, Tetrahedron, 62 (18), 2006, 4563-4572.

 

17. Synthesis of a bis(diketiminate)bromosamarium(III) Complex and its Activity in the Polymerization of Methyl Methacrylate, R.B. Muterle, F. Fabri, R. Buffon, W. de Oliveira and U. Schuchardt, Appl. Catal. A: General 317(2), 2007, 149-153.

 

18. Reduced Anatase on Silica as a Support for a Ziegler Catalyst. J. L. de Souza, F. Fabri, R. Buffon and U. Schuchardt, Appl. Catal. A: General,323,2007, 234-241.

 

19. Pd complexes based on phosphine-linked cyclophosphazenes: synthesis, characterization and application in Suzuki coupling reactions. V.I. de Paula, C.A. Sato and R. Buffon, J. Braz. Chem. Soc.23, 2012, 258-266.

 

20. Reativação in situ de um catalisador industrial de hidroformilação de olefinas (Rh/TPP), S.C. Bannwart e R. Buffon, Petro & Química 342, 2012, 46-49

 

Review Articles

1. Metathesis in Oleochemistry, J.C. Mol and R. Buffon, J. Braz. Chem. Soc., 9, 1998, 01-11;

2. Química Organometálica de Superfície Aplicada à Preparação de Catalisadores Heterogêneos Bem Definidos, S.I. Wolke and R. Buffon, Química Nova, 25, 2002, 985-994;

3. Heterogenization  of Alkene Epoxidation Catalysts, R. Buffon and U. Schuchardt, J. Braz. Chem. Soc., 14, 2003, 347-353.

Book Chapters

1. Surface Organometallic Chermistry of d(0) Metal Complexes, R Buffon and R. Rinaldi, in Modern Surface Organometallic Chemistry, J.-M. Basset, R. Psaro, D. Roberto, R. Ugo (Eds.) Wiley-VCH, Germany, 2009. pp 417-453. ISBN 9783527319725

2. Catálise por Compostos de Coordenação, R. Buffon, in Química de Coordenação: Fundamentos e Atualidades, R. F. de Farias (Organizador) Editora Átomo, Campinas – SP, 2009. pp. 353-392.

3. A.V. Rossi, N.H. Morgon e R. Buffon, Reformulações dos Cursos de Química da Unicamp, em “Formação Superior em Química no Brasil: Prática e Fundamentos Curriculares”, A.R. Echeverria e L.B. Zanon (Org.), Editora Unijuí, Ijuí – RS, 2010. Cap. 7, pp 161-178. ISBN 9788574298

4. R. Buffon, Catalysis by Transition Metal Complexes Immobilized in Inorganic or Hybrid Matrices by the Sol-Gel Method, in “Hybrid Materials, Composites, and Organocatalysts, S. Suib (Ed.) Elsevier, Amsterdam, 2013, chapter 6, pp 123-142. doi: 10.1016/B978-0-444-53876-5.00006-4


Other publications


1. Surface Organometallic Chemistry of Rhenium: Attempts to Characterize a Surface Carbene in Metathesis of Olefins: CH3ReO3/Nb2O5. R. Buffon, A. Choplin, M. Leconte, J.-M. Basset , R. Touroude and W. A. Herrmann,  J. Mol. Catal., 72, 1992, L7-L10;

2. A Surface Organometallic Approach to the Synthesis of Rhenium Based Catalysts for the Metathesis of Olefins: CH3ReO3/Nb2O5 . R. Buffon, A. Auroux, F. Lefebvre, M. Leconte, A. Choplin, J.-M. Basset and W. A. Herrmann, J. Mol. Catal., 76, 1992, 287-295;

3. Reaction of Tungsten(VI) Alkylidyne Complexes with Inorganic Oxides: Involvement of the Resulting Alkylidene Ligand in Olefin Metathesis. R. Buffon, M. Leconte, A. Choplin and J.-M. Basset, J. Chem. Soc., Chem. Commun., 1993, 361-362;

4. Molecular Heterogeneous Metathesis Catalysts: an Attempted Synthesis of Surface-anchored Alkylidenetungsten Complexes. R. Buffon, M. Leconte, A. Choplin and J.-M. Basset, J. Chem. Soc., Dalton Trans., 1994, 1723-1729;

5. Synergistic Effect of Iron and Copper Oxides Supported on Silica in the Room Temperature Oxidation of Cyclohexane. U. Schuchardt, R. Pereira, C.E.Z. Krahembühl, M. Rufo and R. Buffon, Appl. Catal., 131, 1995, 135-141;

6. Mössbauer and Solid-State NMR Spectroscopic Studies of Tin-modified Rhenium-based Metathesis Catalysts, R. Buffon, U. Schuchardt and A. Abras, J. Chem. Soc., Faraday Trans, 1995, 3511-3517;

7. Ethenolysis of Esters of Vegetable Oils: Effects of B2O3 Addition to Re2O7/SiO2-Al2O3/SnBu4 and CH3ReO3/SiO2-Al2O3 Metathesis Catalysts, D. Mandelli, M.J.D.M. Jannini, R. Buffon and U. Schuchardt, J. Am. Oil Chem. Soc., 73, 1996, 229-232;

8. Direct Oxidation of Benzene to Phenol, with Molecular Oxygen, Catalysed by Palladium in the Presence of Heteropolyacids, U. Schuchardt, L. C. Passoni, R. Buffon and A. T. Cruz, J. Mol. Catal. A: Chemical, 120, 1997, 117-123;

9. Effects of the Addition of Nb2O5 to Rhenium-based Olefin Metathesis Catalysts, R. Buffon, M.J.D.M. Jannini and A. Abras, J. Mol. Catal. A: Chemical, 115, 1997, 173-181;

10. Heterogenization  of H
6PMo9V3O40 and Palladium Acetate in VPI-5 and MCM-41 and their Use in the Catalytic Oxidation of Benzene to Phenol, L. C. Passoni, F. J. Luna, M. Wallau, R. Buffon and U. Schuchardt, J. Mol. Catal. A: Chemical, 134, 1998, 229-235.

11. Epoxidation of Cyclohexene on Heterogenized Molybdenum Compounds, E.F.M. Barradas, A.R. Cestari, C. Airoldi and R. Buffon, Braz. J. Chem. Eng., 15, 1998, 146-150;

12. Metathesis of Terminal Olefins over Tin-modified Silica-alumina, M.J.D.M. Jannini, R. Buffon, A.M. de Wit and J.C. Mol, J. Mol. Catal. A: Chemical, 133, 1998, 201-203;

13. Effects of Chelating Diphosphines on the Rhodium Catalysed Carbonylation of Allylamines, R.G. da Rosa, J.D.R. de Campos and R. Buffon, J. Mol. Catal. A: Chemical, 137, 1999, 297-301;

14. Olefin Metathesis over Tin-modified Non-transition Metal Oxides, R. Buffon, M. J. D. M. Jannini, J.C. Mol, A.M. de Wit, A. Abras and F.J.A. Kellendonk, J. Mol. Catal. A: Chemical, 149, 1999, 275-282.


Last update 24/February/2014.                                                 cursos

Instituto de Química