Catalysis is one of the most crucial fields, such as alkylation reaction1, alkane aromatization and dehydrogenation2-4, bio-oil upgrading5-8, 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, 8-9and 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. Yutthalekha, T., Warakulwit, C., Wattanakit, C., Wannapakdee, W., Witoon, T., Limtrakul, J. 
    “Hierarchical FAU-type Zeolite Nanosheets as Green and Sustainable Catalysts for Benzylation of Toluene”
    J. Clean. Prod., 2017, 142 (3), 1244-1251.

  2. 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 Adv., 2016, 6, 2875-2881.

  3. Wannapakdee, W.,Suttipat, D., Dugkhuntod, P., Yutthalekha, T., Thivasasith, A., Kidkhunthod, P., Pengpanich, S., Limtrakul, J., Wattanakit, C.,
    “Enhancing Catalytic Activity and Selectivity of BTEX from C5Hydrocarbons Reforming using Hierarchical Zeolite Nanosheets” 
    Fuel,2019, 236, 1243 – 1252.

  4. Wannapakdee, W.,Yuthalekha, 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 – 187.

  5. Yutthalekha, T., Suttipat, D., Salakhum S., Thivasasith A., Nokbin S., Limtrakul J., and Wattanakit C.
    “Aldol condensation of biomass-derived platform molecules over amine- grafted hierarchical FAU-type zeolite nanosheets (Zeolean) featuring basic sites”
    Chem. Commun., 2017,53, 12185-12188.

  6. Salakhum, S., Yutthalekha, T., Chareonpanich, M., Limtrakul, J., and Wattanakit, C.
    “Synthesis of hierarchical faujasite nanosheets from corn cob ash-derived nanosilica as efficient catalysts for hydrogenation of lignin-derived alkylphenols”
    Microporous Mesoporous Mater., 2018, 258, 141-150.

  7. Suttipat, D., Yutthalekha, T., Wannapakdee, W., Bureekaew, S., and Wattanakit C.
    “Hierarchical FAU/ZIF-8 Hybrid Materials as Highly Efficient Acid–Base Catalysts for Aldol Condensation” 
    ACS Appl. Mater. Interfaces, 2018, 10, 16358-16366.

  8. Salakhum, S., Yutthalekha, T., Shetsiri, S., Witoon, T., and Wattanakit, C.
    “Bifunctional and Bimetallic Pt-Ru/HZSM-5 Nanoparticles for the Mild Hydrodeoxygenation of Lignin-Derived 4-Propylphenol”
    ACS Appl. Nano. Mater., 2019, 2, 2, 1053-1062.

  9. Shetsiri, S., Thivasasith A., Saenluang, K., Wannapakdee, W.,Salakhum, S., Nokbin, S., Limtrakul, J., Wattanakit C.
    “Sustainable Production of Ethylene from Bioethanol over Hierarchical ZSM-5 Nanosheets” 
    Sustainable Energy & Fuel, 2019, 3, 115 – 126.

  1. 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 Mesoporous Mater.,2015, 219, 1-9.

 

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