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Special Issue "Catalytic Biomass to Renewable Biofuels and Biomaterials"
Deadline for manuscript submissions: 31 October 2019.
Renewable, clean and environmentally friendly biofuels and biomaterials applications are in line with the healthy development of the world's energy and materials in the future. Biomass as the only renewable carbon source on Earth has been proposed as an ideal alternative to fossil resources and can be catalytically conversed to valuable products, such as hydrolysis of lignocellulosic wastes, synthesis of biodiesel and bioethanol, thermal conversions of biomass and organic wastes and so on. This special issue receives original research papers focused on biomass catalytic conversion to renewable biofuels and biomaterials. Submissions are welcome especially (but not exclusively) in the following areas:
- Gaseous and liquid biofuels;
- Green chemistry;
Prof. Zhen Fang
Dr. Yi-Tong Wang
Manuscript Submission Information
Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.
Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Catalysts is an international peer-reviewed open access monthly journal published by MDPI.
Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.
- Hydrolysis and pyrolysis of biomass wastes
- Biofuels production
- Biomass conversion
- Biomaterials synthesis
- Novel catalysts synthesis for biomass conversion
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: Catalytic co-pyrolysis of grape seeds and waste tyres in an Auger reactor as a low-cost strategy in the production of drop-in bio-fuels
Authors: Sanahuja-Parejo, A. Veses, J.M. López, R. Murillo, M.S. Callén, T. García
Affiliation: Instituto de Carboquímica (ICB-CSIC), C/ Miguel Luesma Castán, 50018 Zaragoza, Spain.
Abstract: The production of drop-in fuels from biomass pyrolysis can be considered one of the most economical solutions to valorize lignocellulosic biomass. Biomass pyrolysis liquids, also known as bio-oils, would be mixed to commercially available liquid fuels reducing both depletion of fossil fuels and the negative environmental impact caused by its use. Unfortunately, pyrolysis bio-oils are not miscible with conventional fuels, due to their relevant content in oxygen-containing compounds. Thus, several bio-oil deoxygenation strategies are proposed in the literature, being those carried out in situ the most cost-effective and simple approaches. Specifically, both the incorporation of catalysts to the pyrolysis process (catalytic pyrolysis) and the addition of plastic residues as co-feedstock have emerged as the two upgrading strategies leading to more remarkable results. Interestingly, synergetic results in terms of bio-oil deoxygenation yield are found when both upgrading strategies are simultaneously applied in a catalytic co-pyrolysis process. Firstly, the promotion of hydrogen transfer reactions enhanced by both the higher hydrogen content of the plastic-type residues and the catalytic cracking effect, synergistically increases the aromatic hydrocarbon composition in the bio-oil and, secondly, since catalyst deactivation for coke deposition is one of the main drawbacks in catalytic pyrolysis processes, lower coke formation on the catalyst surface can be evidenced due to the extra H2 production. However, these promising lab-test results need to be confirmed under industrial relevant conditions, as it is studied in this manuscript, where a continuous catalytic co-pyrolysis operation in an Auger reactor using grape seeds and waste tyres as co-feedstock is performed. Remarkably, the catalytic performance of three different low-cost calcium-based catalysts is assessed, identified their role in the bio-oil upgrading mechanism towards the production of drop-in bio-fuels.
Title: Catalytic hydrolysis with reticular copolymers functionalized with acid groups for the hydrolysis of wheat straw pretreated with an ionic liquid
Abstract: Several functionalized copolymers with sulfonic and carboxylic groups and others with only sulfonic groups and hydroxyl groups have been synthesized. The copolymers synthesized have different amounts of crosslinking agent of 4% and 40% and were obtained two types of catalysts, a gel-type resins and other a rigid macroreticular structure. Theses copolymers were employed in the hydrolysis of ionic liquid pretreated wheat straw to obtain sugars. This copolymers with hydroxyl or carboxylic groups are clearly more actives that an acidic resin with only sulfonic groups (Amberlyts 70). In addition, the structure of the catalyst (gel or macroreticular) is a determining factor in obtaining glucose. The gel-type structure giving the best glucose concentration, the morphology of the swollen state of these less crosslinked catalysts favored hydrolysis increasing the accessibility of the acid groups per unit volume and consequently increasing the catalytic centers. The observed catalytic behavior suggests diffusion of the substrate within the swollen polymer matrix and indirectly confirms that the pretreatment based on dissolution/precipitation in ionic liquids yields a clear enhancement in the conversion of biomass lignocellulosic to glucose formation with heterogeneous catalysts.