Catalysis: The Key to Valorizing Crude Glycerol
A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Catalysis for Sustainable Energy".
Deadline for manuscript submissions: 28 February 2025 | Viewed by 1028
Special Issue Editors
Interests: heterogeneous catalysts; polyoxometalates; catalytic metal–organic frameworks; sustainable catalytic processes; oxidation catalysis; hydrogen peroxide; desulfurization; glycerol oxidation; deep-eutectic solvents
Special Issues, Collections and Topics in MDPI journals
Interests: homogeneous and heterogeneous catalysts; Keggin heteropolyacids; polyoxometalates; metal catalysts; sustainable catalytic processes; oxidation catalysis; hydrogen peroxide; glycerol chemistry; biofuels and bioadditives
Special Issue Information
Dear Colleagues,
The valorization of the large amount of crude glycerol formed in the biodiesel industry is of primary necessity. There is no doubt that biodiesel is a non-toxic, biodegradable, and renewable fuel, allowing for safer handling and reduced carbon, sulfur, and particulate matter emissions. Industrial biodiesel is one of the most promising ways to replace fossil fuel. Biodiesel is obtained through the transesterification reaction of triglycerides, and glycerol is the by-product of this reaction, originating as 10% in weight in relation to biodiesel. As such, there is an excess of crude glycerol in the fuel industry, owing to the increased interest in biodiesel production. To increase biodiesel’s own sustainability, it is extremely important to develop strategies capable of reutilizing the crude glycerol obtained as waste. Glycerol has many different uses, but most are effective only in its pure form. This Special Issue intends to report effective processes for the purification and transformation of crude glycerol into valuable products with high economic and industrial viability.
Dr. Salete Balula
Prof. Dr. Márcio José da Silva
Guest Editors
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Keywords
- crude glycerol
- biodiesel production
- sustainable catalytic processes
- purification methodologies
- effective glycerol usage
- catalytic esterification
- catalytic etherification
- catalytic acetalization
- catalytic oxidation
- deep eutectic solvents
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Planned Papers
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Title: Acetalization of furfural with glycerol catalyzed by metal salts of phosphomolybdic acid
Authors: Márcio José da Silva; Pedro Henrique da Silva Andrade; Luiza Diogo Miranda
Affiliation: Catalysis Laboratory, Department of Chemistry, Federal University of Viçosa
Abstract: In this work, metal salts of phosphomolybdic acid were prepared and evaluated as catalysts in acetalization reactions of glycerol with furfural. These substrates have a renewable origin and are important in synthesizing bioadditives, which can improve the physicochemical properties of fossil fuels and reduce greenhouse gas emissions. Moreover, the biodiesel industry has generated glycerol in surplus, and its use as a reactant is welcome from economic and environmental viewpoints. Keggin heteropolyacid salts are less corrosive than traditional Brønsted acid catalysts and are easier to handle. Herein, metal phosphomolybdates were easily obtained from the metathesis of acid precursor and metal chloride. A series of metal phosphomolybdates with general formulae M3/xPW12O40 (Mx+ = Al3+, Fe3+, Co2+, Cu2+, Ni2+) was prepared and tested as catalysts in furfural glycerol acetalization reactions.
