In-Situ Transesterification of Chlorella vulgaris Using Carbon-Dot Functionalized Strontium Oxide as a Heterogeneous Catalyst under Microwave Irradiation
| Autor: | Yael Kinel-Tahan, Vijay Bhooshan Kumar, Aharon Gedanken, Alex Tangy, Yaron Yehoshua, Indra Neel Pulidindi |
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| Rok vydání: | 2016 |
| Předmět: |
inorganic chemicals
020209 energy General Chemical Engineering Sonication Chlorella vulgaris Energy Engineering and Power Technology 02 engineering and technology Transesterification Polyethylene glycol Heterogeneous catalysis Catalysis chemistry.chemical_compound Fuel Technology chemistry 0202 electrical engineering electronic engineering information engineering Organic chemistry Methanol Strontium oxide Nuclear chemistry |
| Zdroj: | Energy & Fuels. 30:10602-10610 |
| ISSN: | 1520-5029 0887-0624 |
| DOI: | 10.1021/acs.energyfuels.6b02519 |
| Popis: | The main goal of this study is to functionalize SrO with carbon dots (C-dots) and to explore the composite as a catalyst for fatty acid methyl esters (FAME) production using Chlorella vulgaris as feedstock. C-dots are synthesized by sonicating polyethylene glycol followed by sonochemical modification of Sr(NO3)2 (precursor for SrO) with C-dots. Sonication facilitates the adhesion of C-dots to the surface of Sr(NO3)2. The resulting material is calcined in an inert environment to form a SrO–C-dot composite. The effect of functionalizing SrO with C-dots on the transesterification of the lipids in the alga with methanol is studied. The optimization of a one-stage process of conversion of the lipid fraction of microalga Chlorella vulgaris into FAME using direct transesterification under microwave irradiation is illustrated. A lipid conversion value of 45.5 wt % is achieved using the SrO–C-dot catalyst after 2.5 min of microwave (MW) irradiation. The catalyst displayed better activity than commercial SrO. Micro... |
| Databáze: | OpenAIRE |
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