Catalytic hydrothermal liquefaction of empty fruit bunch in subcritical water over bimetallic modified zeolite

• Main Authors: N.M. Nurul Suziana, N. Asikin-Mijan, Z. Zulkarnain, Yap, Taufiq Yun Hin
• Format: Article
• Language: English; English
• Published: Elsevier Ltd 2021
• Subjects: TP1-1185 Chemical technology
• Online Access: https://eprints.ums.edu.my/id/eprint/33549/2/Catalytic%20hydrothermal%20liquefaction%20of%20empty%20fruit%20bunch%20in%20subcritical%20water%20over%20bimetallic%20modified%20zeolite.ABSTRACT.pdf; https://eprints.ums.edu.my/id/eprint/33549/1/Catalytic%20hydrothermal%20liquefaction%20of%20empty%20fruit%20bunch%20in%20subcritical%20water%20over%20bimetallic%20modified%20zeolite.pdf; https://eprints.ums.edu.my/id/eprint/33549/; https://www.sciencedirect.com/science/article/abs/pii/S026387622100407X; https://doi.org/10.1016/j.cherd.2021.10.005

Catalytic hydrothermal liquefaction of empty fruit bunch (EFB) with no added H2 effectively produces biomass derived fuel or known as bio-oil. In this study, a bimetallic modified zeolite (BaNi, BaLa and BaCe/CHZSM5) catalyst with a series of dosage ratio (1:1, 1:2 and 2:1) was used for the EFB conversion to bio-oil. Ni, La and Ce addition to the Ba/CHZSM5 showed significant changes on the physicochemical properties of catalysts and exhibited enhanced catalytic performance. The activity-structure correlation revealed that EFB conversion and bio-oil yield were favoured on bimetallic modified CHZSM5 and the most effective catalyst was Ba1La2/CHZSM5. Brunauer–Emmett–Teller (BET) surface area measurement and temperature programmed desorption of ammonia (TPD-NH3) results confirmed that high surface area and rich acidic sites of Ba1La2/CHZSM5 catalyst eventually enhanced the catalytic activity in HTL of EFB. Comparing to other bimetallic modified catalyst, the desirable aromatic and aliphatic hydrocarbon also predominated over Ba1La2/CHZSM5 catalysed reaction which demonstrated that this catalyst have a good ability in produce high quality of bio-oil with less oxygenated compounds.