Cheryl-Low, Y. L. and Kong, Pei San and Lee, Hwei Voon (2021) Environmentally adapted bio-oil compounds-derived polyolesters synthesis: Optimization and properties of base fluids. Journal of Hazardous Materials, 407. ISSN 0304-3894, DOI https://doi.org/10.1016/j.jhazmat.2020.124365.
Full text not available from this repository.Abstract
Non-edible bio-oil derived from lignocellulosic biomass could be used as environmentally friendly lubricant-ester base stock for maritime and road-type transportations. However, the use of crude bio-oil with highly oxygenated compounds required further upgrading to yield ester that mimicked the characteristics of Group V base oil (polyolesters). In this study, bio-oil based polyolesters was produced via esterification using green biopolymer alginate acid catalyst (Al-Alg). The bio-oil compounds used were acetic acid (AcA), propionic acid (PrA) and levulinic acid (LA), while polyols such as neopentyl glycol (NPG), trimethylolpropane (TMP) and pentaerythritol (PE) were used. Optimization studies revealed that NPG-PrA ester gave the best ester purity of 100%, with 95% of diester selectivity under optimum conditions of 15 wt% Al-Alg, 8 h, 6:1 PrA:NPG and 140 degrees C. The produced polyolesters showed potential lube characteristics with viscosity index of 76, kinematic viscosity of 2.3 mm(2) s(-1) at 40 degrees C and oxidative induction time of 15 min at 100 degrees C. Furthermore, a reusability study of the Al-Alg catalyst indicated high NPG-PrA diester selectivity (above 90%) for 8 consecutive cycles. The physico-chemical properties of spent Al-Alg catalyst were also discussed.
| Item Type: | Article |
|---|---|
| Funders: | Universiti Malaya (GC001B-14AET), SATU Joint Research Scheme RU Grants (ST012-2018) (ST021-2019) |
| Uncontrolled Keywords: | Biomass; Bioenergy; Esterification; Viscosity index; Brown algae alginate |
| Subjects: | G Geography. Anthropology. Recreation > GE Environmental Sciences T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Nanotechnology & Catalysis Research Centre |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 08 Apr 2022 06:12 |
| Last Modified: | 08 Apr 2022 06:12 |
| URI: | http://eprints.um.edu.my/id/eprint/27005 |
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