รศ.ดร. จักรพันธ์ ศิริเจริญศรี

วุฒิการศึกษา

• Ph.D. (Chemistry), Kasetsart University
• M.Sc. (Chemistry), Kasetsart University
• B.Sc. (Chemistry), Khon Kaen University

งานวิจัย

Computational Chemistry

Role of acid strength on the petrochemical reactions

Using the computational chemistry techniques, these can provide insights into the role of composition and structure of actives sites affect their activity and selectivity for targeted reactions. Tuning of acid strength of zeolite on the production of the ε-caprolactam via the Beckmann rearrangement reaction of cyclohexanone oxime. A comparison of the activity on H-[Al]-MFI and H-[B]-MFI zeolites, the increasing of acid strength of catalyst would increase the activation energies of the rate-controlling step.

Reactivity of active sites in Fe/ZSM-5 catalyst

After Fe cations are introduced into the framework, the Fe/zeolites can serve as oxidation and reduction catalysts such as

• N₂O decomposition
• Hydrocarbon oxidation
• Epoxidation of alkene
• Dehydrogenation of hydrocarbon

ผลงานวิจัย

1. Sirijaraensre, J.; Limtrakul, J., The influence of the framework on structures and energetic profiles of the vapor phase Beckmann rearrangement on different types of zeolite. Prepr. – Am. Chem. Soc., Div. Pet. Chem. 2004, 49, (2), 222-226.
2. Sirijaraensre, J.; Truong Thanh, N.; Limtrakul, J., Density functional study of the mechanism of the Beckmann rearrangement catalyzed by H-ZSM-5: a cluster and embedded cluster study. J Phys Chem B 2005, 109, (24), 12099-106.
3. Sirijaraensre, J.; Limtrakul, J., Vapor-phase Beckmann rearrangement of oxime molecules over H-faujasite zeolite. ChemPhysChem 2006, 7, (11), 2424-2432.
4. Maihom, T.; Boekfa, B.; Sirijaraensre, J.; Nanok, T.; Probst, M.; Limtrakul, J., Reaction Mechanisms of the Methylation of Ethene with Methanol and Dimethyl Ether over H-ZSM-5: An ONIOM Study. J. Phys. Chem. C 2009, 113, (16), 6654-6662.
5. Sirijaraensre, J.; Limtrakul, J., Effect of the acidic strength on the vapor phase Beckmann rearrangement of cyclohexanone oxime over the MFI zeolite: an embedded ONIOM study. Phys. Chem. Chem. Phys. 2009, 11, (3), 578-585.
6. Sirijaraensre, J. and J. Limtrakul.2013. “Mechanisms of the Ammonia Oxidation by Hydrogen Peroxide over the Perfect and Defective Ti Species of TS-1 Zeolite”Phys. Chem. Chem. Phys. 15: 18093-18100.
7. Sirijaraensre, J. and J. Limtrakul.2013. “Structures and Mechanisms of the Dehydration of Benzaldoxime over Fe-ZSM-5 Zeolites: A DFT Study”Struct. Chem. 24: 1307-1318.
8. Injan, N., J. Sirijaraensre, J. Limtrakul.2014.”Decomposition of Nitrous Oxide on Fe-Doped Boron Nitride Nanotubes: The Ligand Effect” Phys. Chem. Chem. Phys. 16: 23182-23187.
9. Thivasasith, A., J. Sirijaraensre, P. Khongpracha, C. Warakulwit, B. Jansang, J. Limtrakul.2015. “Reaction Mechanism of Methanol to Formaldehyde over Fe- and FeO-Modified Graphene” Chem. Phys. Chem. 16: 986-992.
10. Sirijaraensre, J. and J. Limtrakul.2015. “Modification of the Catalytic Properties of the Au Nanocluster for the Conversion of Methane-to-Methanol: Synergistic Effects of Metallic Adatoms and a Defective Graphene Support”Phys. Chem. Chem. Phys.17: 9706-9715.