Catalysis is one of the most crucial fields, such as alkylation reaction¹, alkane aromatization and dehydrogenation^2-4, bio-oil upgrading^5-8, sugar utilization and ethanol conversion⁹. Hence, to achieve these potential reactions, the synthesis of catalysts is one of the most challenging researches. Regarding to mass/heat transportation limitation of conventional zeolites, we are focusing on the design of hierarchical zeolites, which compose of micropores and mesopores or/and macropores to facilitate to increase the selectivity of desired products and prevent catalyst deactivation. Therefore, we are developing various types of hierarchical zeolites such as Faujasite (FAU)^{1, 5-7}, ZSM-5 (MFI)^{2-4, 8-9}and Ferrierite (FER) nanosheets¹⁰. In addition, we are not only focusing on the monofunctional catalyst to utilize in the reactions, but we are also focusing on the development of hybrid catalysts. It is undeniable that there are a large number of crucial chemicals, which can be produced using at least two types of active sites, for example, Brønsted acid/Lewis acid sites and acid/basic sites. From these perspectives, we are developing metals modified zeolites and also zeolite-based hybrid catalysts, such as zeolite@Metal-organic Frameworks (MOFs) composite⁷, zeolite@zeolite composites and porous silica/alumina composites for achieving the reactions.

 References

1. Rodaum, C.; Thivasasith, A.; Iadrat, P.; Kidkhunthod, P.; Pengpanich, S.; Wattanakit, C.*
   Ge‐Substituted Hierarchical Ferrierite for n‐pentane Cracking to Light Olefins: Mechanistic Investigations via In‐situ DRIFTS Studies and DFT Calculations 
   ChemCatChem., 2021, https://doi.org/10.1002/cctc.202101045
   
   
2. Salakhum, S.; Prasertsab, A.; Klinyod, S.; Saenlung, K.; Witoon, T.; Wattanakit, C.* 
   
   Sustainable transformation of natural silica-rich solid and waste to hierarchical zeolites for sugar conversion to hydroxymethylfurfural (HMF)
   Microporous and Mesoporous Mater., 2021, 111252.
   
   

3. Wetchasat, P.; Salakhum, S.*; Imyen, T.; Suttipat, D.; Wannapakdee, W.; Ketkaew, M.; Prasertsab, A.; Kidkhunthod, P.; Witoon, T.; Wattanakit, C.                            
   One-Pot Synthesis of Ultra-Small Pt Dispersed on Hierarchical Zeolite Nanosheet Surfaces for Mild Hydrodeoxygenation of 4-Propylphenol
   Catalysts, 2021, 11, 333.
   
   

4. Iadrat, P.; Hori, N.; Atithep, T.; Wattanakit, C.*
   Effect of Pore Connectivity of Pore-Opened Hierarchical MOR Zeolites on Catalytic Behaviors and Coke Formation in Ethanol Dehydration
   ACS Appl. Mater. Interfaces, 2021, 13, 8294-8305.
   
   
5. Suttipat, D.; Saenluang, K.; Wannapakdee, W.; Dugkhuntod, P.; Ketkaew, M.; Pornsetmetakul, P.; Wattanakit, C.*
   Fine-tuning the surface acidity of hierarchical zeolite composites for methanol-to-olefins (MTO) reaction
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6. Ketkaew, M.; Klinyod, S.; Saenluang, K.; Rodaum, C.; Thivasasith, A.; Kidkhunthod, P.; Wattanakit, C.*

   Fine-tuning the chemical state and acidity of ceria incorporated in hierarchical zeolites for ethanol dehydration
   Chem. Commun., 2020, 56, 11394-11397.
   
   

7. Imyen, T.; Wannapakdee, W.; Ittisanronnachai, S.; Witoon, T.; Wattanakit, C.*
   
   Tailoring hierarchical zeolite composites with two distinct frameworks for fine-tuning product distribution in benzene alkylation with ethanol
   Nanoscale Adv., 2020, 2, 4437-4449.
   
   
8. Saenluang, K.;  Imyen, T.;  Wannapakdee, W.;  Suttipat, D.;  Dugkhuntod, P.;  Ketkaew, M.;  Thivasasith, A.; Wattanakit, C.*
   Hierarchical Nanospherical ZSM-5 Nanosheets with Uniform Al Distribution for Alkylation of Benzene with Ethanol 
   ACS Appl. Nano Mater., 2020, 3, 3252–3263.
   
   
9. Salakhum, S.; Saenluang K.; Wattanakit, C.*
   Stability of monometallic Pt and Ru supported on hierarchical HZSM-5 nanosheets for hydrodeoxygenation of lignin-derived compounds in aqueous-phase
   Sustainable Energy & Fuels, 2019, 4, 1126-1134.
   
   
10. Ketkaew, M.; Suttipat, D.; Kidkhunthod, P.; Witoon, T.; Wattanakit, C.*
    Nanoceria-modified platinum supported on hierarchical zeolites for selective alcohol oxidation
    RSC Adv., 2019, 9, 36027-36033.
    
    
11. Suttipat, D.; Yutthalekha, T.; Wannapakdee, W.; Dugkhuntod, P.; Wetchasat, P.; Kidkhunthod, P.;
    Wattanakit, C.*
    Tunable Acid‐Base Bifunction of Hierarchical Aluminum‐Rich Zeolites for the  One‐Pot Tandem Deacetalization‐Henry Reaction
    ChemPlusChem, 2019, 84, 1–6.
    
    

12. Imyen, T.; Wannapakdee, W.; Limtrakul, J.; Wattanakit, C.*
    Role of Hierarchical Micro-Mesoporous Structure of ZSM-5 Derived from an Embedded Nanocarbon Cluster Synthesis Approach in Isomerization of Alkenes, Catalytic Cracking and Hydrocracking of Alkanes.
    Fuel, 2019, 254, 115593–115605.
    
    

13. Dugkhuntod, P.; Imyen, T.*; Wannapakdee, W.; Yutthalekha.; Salakhum, S.; Wattanakit, C.
    Synthesis of Hierarchical ZSM-12 Nanolayers for Levulinic Acid Esterification with Ethanol to Ethyl Levulinate.
    RSC Adv. 2019, 9, 18087–18097.
    
    

14. Wannapakdee, W.; Meng, L.; van Hoof, Arno J. F.; Bolshakov, A.; Wattanakit, C.; Hensen, E. J. M.
    The Important Role of Rubidium Hydroxide in the Synthesis of Hierarchical ZSM‐5 Zeolite Using Cetyltrimethylammonium as Structure‐Directing Agent.
    Eur. J. Inorg. Chem. 2019, 2493–2497.
    
    

15. Wannapakdee, W.; Yutthalekha, T.; Dugkhuntod, P.; Rodponthukwaji, K.; Thivasasith, A.; Nokbin, S.; Witoon, T.; Pengpanich, S.; Wattanakit, C.*
    Dehydrogenation of propane to propylene using promoter-free hierarchical Pt/silicalite-1 nanosheets.
    Catalysts, 2019, 9, 174.
    
    
16. Shetsiri, S.; Thivasasith, A.; Wannapakdee, W.; Saenluang, K.; Wetchasat, P.; Salakhum, S.; Nokbin, S.; Limtrakul, J.; Wattanakit, C.*
    Sustainable production of ethylene from bioethanol over hierarchical ZSM-5 nanosheets.
    Sustainable Energy & Fuels, 2019, 3, 115-126.
    
    
17. Wannapakdee, W.; Suttipat, D.; Dugkhuntod, P.; Yutthalekha, T.; Thivasasith, A.; Kidkhunthod, P.; Nokbin, S.; Pengpanich, S.; Limtrakul, J.; Wattanakit, C.*
    Aromatization of C₅ hydrocarbons over Ga-modified hierarchical HZSM-5 nanosheets. 
    Fuel, 2019, 236, 1243-1253.
    
    
18. Suttipat, D.; Wannapakdee, W.; Yutthalekha, T.; Ittisanronnachai, S.; Ungpittagul, T.; Phomphrai, K.; Bureekaew, S.; Wattanakit, C.*
    Hierarchical FAU/ZIF‑8 hybrid materials as highly efficient acid-base catalysts for aldol condensation. 
    ACS Applied Materials & Interfaces, 2018, 10, 16358-16366.
    
    
19. Salakhum, S.; Yutthalekha, T.; Chareonpanich, M.; Limtrakul J.; Wattanakit, C.*
    Synthesis of hierarchical faujasite nanosheets from corn cob ash-derived nanosilica as efficient catalysts for hydrogenation of lignin-derived alkylphenols. 
    Microporous and Mesoporous Materials, 2018, 258, 141-150.
    
    
20. Yutthalekha, T.; Suttipat, D.; Salakhum, S.; Thivasasith, A.; Nokbin, S.; Limtrakul J.; Wattanakit, C.*
    Aldol condensation of biomass-derived platform molecules over amine-grafted hierarchical FAU-type zeolite nanosheets featuring basic sites.
    Chemical Communications, 2017, 53, 12185—12188 (Back cover page).
    
    
21. Rodponthukwaji, K.; Wattanakit, C.^*; Yutthalekha, T.;  Assavapanumat, S.; Warakulwit, C.; Wannapakdee, W.; Limtrakul, J.
    Catalytic upgrading of carboxylic acids as bio-oil models over hierarchical ZSM-5 obtained via an organosilane approach.
    RSC Advances, 2017, 7, 35581-35589.
    
    
22. Yutthalekha, T.; Wattanakit, C.; Warakulwit, C.; Wannapakdee, W.; Rodponthukwaji, K.; Witoon, T.; Limtrakul, J.^* 
    Hierarchical FAU-type zeolite nanosheets as green and sustainable catalysts for Benzylation of Toluene.
    Journal of Cleaner Production, 2017, 142 (3), 1244-1251.
    
    
23. Warakulwit, C.; Yadnum, S.; Boonyuen, C.; Wattanakit, C.; Karajic, A.; Garrigue, P.; Mano, N.; Bradshaw, D.; Limtrakul, J.; Kuhn, A.
    Elaboration of metal organic framework hybrid materials with hierarchical porosity by electrochemical deposition-​dissolution.
    CrystEngComm, 2016, 18, 5095-5100.
    
    
24. Wannapakdee, W.; Wattanakit, C.^*; Paluka, V.; Yutthalekha, T.; Limtrakul, J.
    One-​pot synthesis of novel hierarchical bifunctional Ga​/HZSM-​5 nanosheets for propane aromatization.
    RSC Advances, 2016, 6, 2875-2881.
    
    
25. Wuamprakhon, P.; Wattanakit, C.; Warakulwit, C.; Yutthalekha, T.; Wannapakdee, W.; Ittisanronnachai, S.; Limtrakul, J. 
    Direct synthesis of hierarchical ferrierite nanosheet assemblies via an organosilane template approach and determination of their catalytic activity.
    Microporous and Mesoporous Materials, 2016, 219, 1–9.