yrammuS 要概79NapidaHinchiranan80ChuanchomAumnateRemoval of Polycyclic Aromatic Hydrocarbons (PAHs) in Waste Tire Pyrolysis Oil via Catalytic Hydrogenation (Project 2018)Poly(Lactic Acid)/Cellulose Green Composites for Automotive Applications (Project 2018)59(t-BHP) as an initiator. The SiO2 particles were also modified by using 3-aminopropyltriethoxysilane (1N-ES) 3-aminopropyltrimethoxysilane (1N-MS), N-[(3-trimethoxysilyl)propyl]ethylenediamine (2N-MS) or N-[(3-trimethoxysilyl)-propyl]diethylenetriamine (3N-MS) via a sol-gel reaction. The chemical structure, physical and thermal properties, and morphologies of modified NR (MNR) and modified SiO2 particles were investigated. Then, the MNR was mixed with modified SiO2 particles to develop the adsorbent material for CO2 adsorption. CO2 adsorption capacity increased from 0.79 mg/g (for NR) to 1.26 (for MNR) and 6.11 mg/g (for MNR with modified silica particles by 3N-MS) at the ambient temperature. By increasing temperature up to 100 oC, the CO2 adsorption capacity of MNR foam composite increased because the structure of MNR foam composite and the structure of modifier on modified silica surface become more flexible. Finally, the kinetic adsorption of adsorbent materials fitted with Avrami’s model indicated that MNR foam composite showed either physisorption or chemisorption.Waste tire pyrolysis oil (WTPO) contains polycyclic aromatic hydrocarbon (PAHs) of 18,000 ppm, which are classified as toxic componds to induce cancer in human or animals. To produce the cleaner WTPO, hydrogenation was applied for removing PAHs in WTPO before using in a general combustion process. This research was consisted of 2 steps: hydrogenation of naphthalene, a model compond of PAHs, for catalyst screening and hydrogenation of real WTPO. For the first step, nickel supported on gamma alumina (Ni/γ-Al2O3) promoted by molybdenum (Mo), tungstate (W) or platinum (Pt) was selected as the hydrogenation catalysts. Although NiPt catalyst provided the highest naphthalene conversion to 55.8% under 30 bar initial H2 pressure at 350 ºC for 4 h, it were less tolerant to organosulfurs found in WTPO (1,400 ppm). At similar condition, WTPO hydrogenation over NiMo and NiW catalysts could achieve 68.8% and 54.2% PAHs reduction in the presence of sufur compounds.Biocomposites materials containing cellulose fibers are gaining increasing interest. In this study, poly(lactic acid)/extracted kenaf cellulose biocomposites were fabricated via melt-compounding process and then manufactured by 3D printing process to optimize the potentially used in automotive applications. Eco-friendly extracted kenaf cellulose fibers from locally grown kenaf plants were prepared and used as reinforcement for such biocomposites to improve their properties, in particular, the mechanical performance. The compatibilizers (PE-g-MA and PP-g-MA) and the plasticizer (Triacetin) were also incorporated into the biocomposites to improve their properties. The effects of extracted kenaf cellulose fibers loading, the addition of the compatibilizers and plasticizer on the mechanical, thermal and morphological properties, also the water absorption of the biocomposites, were examined.Rep. Grant. Res., Asahi Glass Foundation (2020)
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