Dr. Ch. Subrahmanyam
Date of Birth: 10th August 1976
Research and Education:
| Postdoctoral research | November 2006-October 2007 Department of Catalytic Reaction Engineering—Dr.Kiwi-Minsker— Selective hydrogenation, Plasma assisted Hydrogen production (by direct H2S decomposition). October 2003—October 2006--Department of Chemical Engineering, EPFL- Lausanne, Switzerland- Supervisor Prof. Albert RenkenProjects: Plasma catalysis, Abatement of VOCs by Non-thermal plasma (NTP)/ Photocatalytic decomposition of VOCs assisted by NTP/ Waster water treatment by NTP / Ozone decomposition |
| Ph.D | August 1998 to March 2003, Department of Chemistry, IIT Madras India. Advisers: Prof. T.K. Varadarajan & Prof. B. Viswanathan Catalysis, Material science, carbon nanotubes, nanotechnologyThesis: Synthesis, characterization and catalytic properties of selected mesoporous solids, |
| Ph.D (visiting student) | March- May 2001, Department of Chemical Engineering, EPFL- Lausanne, Switzerland Mentor: Prof. Albert RenkenProject: Synthesis of MCM-41 (zeolites) based materials on Stainless steel grids for possible industrial applications |
| M.Sc | 1996-1998, Department of Chemistry, Andhra University, IndiaMajor: General, Organic, Inorganic and Physical |
| B.Sc | 1993 – 1996, S.R.R & C.V.R. Govt college, Vijayawada, IndiaMajor: Mathematics, Physics and Chemistry |
Research experience and Skills:
| Plasma processing and catalysis | Ø Selective hydrogenation of alkynes using structured catalysts. Ø Development of structured catalysts based on carbon nanofibres/nanotubes Ø An economically feasible production approach for hydrogen by in-situ decomposition of H2S is under testing Ø A novel DBD reactor was designed to overcome the limitations of catalytic plasma technique. Ø Total oxidation of selected VOCs like toluene, isopropanol, trichloroethylene was achieved with the novel DBD reactor designed. Ø DBD reactor has been successfully tested for the photocatalytic destruction of TCE. Ø NTP treatment of waste water has been carried out for the removal of diluted VOCs. Ø An innovative catalyst based on carbon fibres was developed for the decomposition of ozone |
| Catalysis & Material science | Ø Mesoporous MCM-48 solids were synthesized and characterized. Ø Alkylation of condensed aromatics like naphthalene was done using H-(Al,Fe)- MCM-48. MCM-48 Ø Selective oxidation of aromatics over M-M41S materials (Ti,V, Cr andMn) Ø Successfully synthesized zeolties (metal oxides) on metal grids for industrially important alkylation reactions. Ø First time mesoporous AlPOs were synthesized and tested for the oxidation of hydrocarbons. Ø Natural oxidants like air was used during the oxidation of cyclohexane over Fe-AlPO |
| Analytic instruments | Ø Familiar with NTP plasma equipment ( built own plasma equipment) Ø Handled instruments like GC, GC-MS, HPLC, BET, XPS, FTIR, FT-Raman XRD, TGA, DSC, Micrometrics and familiar with SEM, TEM and 1H NMR and cyclic voltammetry |
| Computation | Ø Chem Office, Origin, Microsoft Office, Matlab and basic FORTRAN programming, |
List of Publications---Referred International Journals (Published/ accepted):
1. Subrahmanyam,Ch., Kiwi-Minsker, L. and Renken, A. Non-thermal plasma catalytic reactor for the production of hydrogen by direct decomposition of H2S, J. Optoelectro. Nanomater. (accepted)
2. Subrahmanyam,Ch., Kiwi-Minsker, L. and Renken, A. (2007), Novel Catalytic Plasma Reactor for the Abatement of Diluted Volatile Organic Compounds, Chemical Engineering Journal, 134, 78-83
3. Subrahmanyam, Ch., Magureanu, M., Laub, D., Renken, A. and Kiwi-Minsker, L.(2007): Nonthermal Plasma Abatement of Trichloroethylene Enhanced by Photocatalysis, Journal of Physical Chemistry C, Vol. 111 (11), 4315-4318.
4. Magureanu, M., Mandache, N.B., Parvulescu, V.I., Subrahmanyam, Ch., Kiwi-Minsker, L., and Renken, A. (2007), Improved performance of non-thermal plasma reactor during decomposition of trichloroethylene: optimization of the reactor geometry and introduction of catalytic electrode, Applied Catalysis B: Environmental, 74 (3-4), 270-277.
5. Subrahmanyam,Ch., Kiwi-Minsker, L. and Renken, A.(2007): Nonthermal Plasma Assisted Decomposition of Isopropanol from Gas Streams, Plasma Chemistry and Plasma Processing, Vol. 27, No. 1, pp. 13-22.
6. Subrahmanyam,Ch., Magureanu, M., Kiwi-Minsker, L. and Renken, A. (2006): Nonthermal Plasma Assisted Catalytic Decomposition of Volatile Organic Compounds, Part I: Design and Performance of Novel Dielectric Barrier Discharge Reactor, Applied Catalysis B: Environmental, Vol. 65, No. 1-2, pp. 150-156.
7. Subrahmanyam,Ch., Kiwi-Minsker, L. and Renken, A. (2006): Nonthermal Plasma Assisted Catalytic Decomposition of Volatile Organic Compounds, Part II: Influence of Operating Conditions, Applied Catalysis B: Environmental, Vol. 65, No. 1-2, pp. 157-162.
8. Subrahmanyam, Ch., Bulushev, D. A. and Kiwi-Minsker, L. (2005): Dynamic Behaviour of Ozone Decomposition Catalyst Based on Activated Carbon Fibres, Applied Catalysis B: Environmental, Vol. 61, No. 1-2, pp. 98-106.
9. Subrahmanyam, Ch., Louis, B., Viswanathan, B., Renken, A., and Varadarajan, T. K. (2005): Synthesis, Characterization and Catalytic Properties of Vanadium Substituted Mesoporous Aluminophosphates, Applied Catalysis A: General, Vol. 282, No. 1-2, pp. 67-71.
10.Subrahmanyam, Ch., Viswanathan, B., and Varadarajan, T. K. (2005): Alkylation of Naphthalene over Acidic Mesoporous Solids, Journal of Molecular Catalysis A: Chemical, Vol. 226, No. 2, pp. 155-163.
11. Subrahmanyam, Ch., Louis, B., Viswanathan, B., Renken, A., and Varadarajan, T. K. (2005): Preparation and Characterization of MCM-48 on Stainless Steel Grids for Possible Industrial Applications, Catalysis in Petroleum and Petrochemical Industries, Narosa publishing house, New Delhi, pp. 225-228.
12. Subrahmanyam, Ch., Viswanathan, B., and Varadarajan, T. K. (2004): Synthesis, Characterization and Catalytic Properties of Mesoporous Iron Substituted Aluminophosphates, Journal of Molecular Catalysis A: Chemical, Vol. 223, No. 1-2, pp. 149- 153.
13.Subrahmanyam, Ch., Louis, B., Rainone, F., Viswanathan, B., Renken, A., and Varadarajan T.K.(2002): Catalytic Oxidation of Toluene with Molecular Oxygen over Cr- Substituted Mesoporous Materials, Applied Catalysis A: General, Vol. 241, No. 1-2, pp. 205-215.
14.Subrahmanyam, Ch., Louis, B., Rainone, F., Viswanathan, B., Renken, A., and Varadarajan T.K. (2002): Partial Oxidation of Toluene by Molecular Oxygen over Mesoporous Cr- AlPO, Catalysis Communications, Vol. 3, No. 2, pp. 45-50.
15.Subrahmanyam, Ch., Viswanathan, B., and Varadarajan, T. K. (2002): Mesoporous V-Alpo- A New Partial Oxidation Catalyst, Eurasian Chemico-Technological Journal, Vol. 4, No. 3, pp. 169-174.
16.Louis, B., Subrahmanyam, Ch., Kiwi-Minsker, L., Viswanathan, B., Buffet, P. A., and Renken, A. (2002): Synthesis and Characterization of MCM-41 Coatings on Stainless Steel Grids, Catalysis Communications, Vol. 3, No. 4, pp. 159-163.
17.Subrahmanyam, Ch., Louis, B., Rainone, F., Viswanathan, B., Renken, A., and Varadarajan T.K. (2001): Hydroxylation of Phenol over Transition Metal Substituted MCM-48, Eurasian Chemico-Technological Journal, Vol. 3, No.1, pp. 59-63.
Submitted:
1. Subrahmanyam, Ch., Renken, A. and Kiwi-Minsker, L. An innovative and economically feasible H2 production route, J. Catal. ( under revision)
2. Subrahmanyam, Ch., Renken, A. and Kiwi-Minsker, L., Abatement of VOCs assisted by nonthermal plasma, Chemical Engineering journal.
3. Subrahmanyam, Ch., S. Shamugam, B. Viswanathan, T.K. Varadarajan, Novel synthetic procedure for the preparation of thermally stable mesoporous titania, Eurasian Chem Tech Journal.
Referred National Journals:
1. Subrahmanyam, Ch., Louis, B., Viswanathan, B., Renken, A., and Varadarajan (2004): Synthesis, Characterization and Catalytic Properties of Vanadium Substituted Mesoporous AlPOs, Bulletin of Catalysis Society of India, Vol. 2, No. 2, pp. 59-66.
2. Subrahmanyam, Ch., Viswanathan, B., and Varadarajan, T. K. (2002): Mesoporous Cr-AlPO- A Selective Catalyst for Oxidation of Side Chain Aromatic Substrates, Bulletin of Catalysis Society of India, Vol. 1, No. 1, pp. 52-56.
3. Subrahmanyam, Ch., Viswanathan, B., and Varadarajan, T. K. (2000): Mesoporous architecture of solids- How are they designed and exploited, Bulletin of Catalysis Society of India, 1, 1Workshops organized:
1. 2nd workshop on Micro-structured devices for Process intensification in Fine chemical Production, 21-22nd Buchs, Switzerland
2. Workshop on Microreaction Technology for Process Intensification, on 11th January, 2008 NIT Trichy, India.
Invited talks:
1. Non-thermal plasma processing for abatement of air pollutants-Workshop on Catalysts for Environmental Applications (WCEA 2007), 2-3rd December, NIT Trichy
2. Carbon nanofirbres supported on Structured supports, (will be presented)
Selected Papers Presented in symposia / conferences:
1. A. Renken, Ch. Subrahmanyam, L. Kiwi-Minsker (2007), Catalytic processes for air pollution abatement -trends and perspectives, EUROPACAT VIII TURKU / ÅBO, 26-31 August.
2. Subrahmanyam, Ch., Renken, A. and Kiwi-Minsker (2007), Catalytic Non-thermal Plasma reactor for the production of hydrogen by direct decomposition of H2S, CPPA, 14-18, September, Brasov, Romania,
3. Subrahmanyam, Ch., Renken, A. and Kiwi-Minsker, L. (2006) Novel catalytic plasma reactor for the destruction of VOCs, Chem Reactor-17, May 15-17th , Athens, Greece.
4. Subrahmanyam, Ch., Renken, A. and Kiwi-Minsker, L. (2006) Novel catalytic plasma reactor for the destruction of VOCs, Chem Reactor-17, May 15-17th , Athens, Greece.
5. Subrahmanyam, Ch., Bulushev, D., Renken, A. and Kiwi-Minsker, L.(2004): Development of novel structured activated carbon fibre catalyst for decomposition of ozone, Carbocat-I, July-18.Lausanne, Switzerland.6. Subrahmanyam, Ch., Louis, B., Rainone, F., Viswanathan, B., Renken, A., and Varadarajan T.K (2002):Liquid Phase Oxidation of Ethyl benzene and Benzyl alcohol over mesoporous CrAlPO, Accepted for the presentation in 3rd International Mesostructured Materials Symposium (IMMS 2002) July 8-11, Jeju, Korea.
