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Updated: Sep 23, 2025
09:10
Experimental Protocol for Biodiesel Production with Isolation of Alkenones as Coproducts from Commercial Isochrysis Algal Biomass
Published on: June 24, 2016
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Correlation between hydrogen yield and product distribution in algae conversion through an isopropanol/water system
Chunze Liu1, Liping Kong1, Anaerguli Wufuer1
1College of Chemistry and Molecular Engineering, East China Normal University 500 Dongchuan Road Shanghai 200241 China ecnu_yywang@163.com +86 21-54340133 +86 21-54340133.
RSC Advances
|May 13, 2022
Summary
This study demonstrates catalytic algae decomposition into bio-oil using isopropanol and water. Rhodium on carbon (Rh/C) catalyst yielded the most bio-oil, with hydrogen yield correlating to hydrocarbon output.
Area of Science:
- Biomass conversion
- Catalysis
- Green chemistry
Background:
- Algae are a sustainable feedstock for biofuel production.
- Catalytic decomposition offers a promising route for converting algae into valuable products like bio-oil.
- Optimizing reaction conditions and catalysts is crucial for efficient algae-to-bio-oil conversion.
Purpose of the Study:
- To investigate the catalytic decomposition of algae into bio-oil using an isopropanol-water system.
- To explore the effect of varying isopropanol-water ratios and formic acid addition on hydrogen and bio-oil yields.
- To identify the most effective noble metal catalyst for maximizing bio-oil production.
Main Methods:
- Catalytic decomposition of algae in a mixture of isopropanol and water.
- Adjustment of hydrogen (H2) yield by varying the isopropanol/water ratio.
- Screening of five noble metal supported catalysts, with Rhodium on carbon (Rh/C) selected for optimal performance.
- Utilizing elemental analysis (EA), gas chromatography (GC), and GC-mass spectrometry (GC-MS) for product analysis.
Main Results:
- The isopropanol-water system effectively decomposed algae into bio-oil.
- Rhodium on carbon (Rh/C) exhibited the highest catalytic activity, resulting in the maximum oil yield.
- A direct correlation was found between hydrogen yield and hydrocarbon yield, enabling prediction of product distribution.
- Formic acid addition extended the achievable yield range.
Conclusions:
- Catalytic decomposition of algae in an isopropanol-water system is a viable method for bio-oil production.
- Rh/C is a highly effective catalyst for this process.
- The established correlation between H2 and hydrocarbon yield aids in optimizing product selectivity for desired outcomes.
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