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Production of Biodiesel Using Eggshell as Catalyst

Khatibi, Maryam | 2020

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 52555 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Khorasheh, Farhad; Larimi, Afsaneh Sadat
  7. Abstract:
  8. The aim of this project is to investigate and synthesize CaO-based nanocatalysts derived from chicken eggshell calcination with alkali metals and sodium-potassium compounds promoters used in the transesterification reaction of canola oil and methanol. Sections of this thesis include the synthesis of nanocatalysts, catalyst characterization tests, and investigation of reaction under optimal conditions. Two groups of catalysts containing different weight percentages of alkali metals based on CaO and 1 %wt sodium-potassium based on CaO with different weight percentages of these two elements were synthesized by wet impregnation method and used in the reaction under optimum condition. Catalyst characterization tests including X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray (EDX), Brunauer-Emmet-Teller (BET) surface area studies, thermal gravimetric analysis (TGA) and transmission electron microscopy (TEM) were used to describe their structure and morphology. The yield of biodiesel was determined by gas chromatography-mass spectrometry (GC-MS). 1%wt Na-K/CaO catalyst with equal weight ratio of Na and K achieved the maximum FAME yield of 100% under the reaction conditions of 3 wt% catalyst loading (catalyst mass / oil mass), 9:1 methanol to oil molar ratio, 50 °C reaction temperature and 3 h reaction time. In addition, after use for up to three cycles, the catalyst still has relatively high biodiesel yield
  9. Keywords:
  10. Biodiesel ; Canola Oil ; Alkali Metals ; Transesterification Reaction ; Heterogeneous Nanocatalyst ; Chicken Egg Shell

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