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Articles by Bert Sels
Reliability of milligram-scale high-throughput screening for evaluating polyolefin chemical recycling in the melt with heterogeneous catalysis
Results Catalyst performance is assessed based on activity, stability, and selectivity. A fast, reliable screening methodology using TGA and micropyrolysis-GC×GC-FID/MS is presented for efficient cracking of polyolefins (LDPE and PP) to valuable chemicals. The results are validated in a lab-scale semi-batch slurry reactor with continuous condensing.
Selective Homogeneous Monohydrogenation of Muconic Acid and Muconates via Ru‐Catalyzed Transfer Hydrogenation
Conflict of Interests The authors declare no conflict of interest. Supporting Information Filename Description cctc70223-sup-0001-SuppMat.docx5.6 MB Supporting Information References 1, Nat. Catal. 2021, 4, 186–192. 2, , , , , , , , , , , , , , , , Science 2020, 367, 1385–1390. 3, , , , , , , Green Chem. 2024, 26, 5852–5861. 4, , , , , Biotechnol. Adv. 2018, 36, 2248–2263. 5, , , , Bio-Based Chemicals: Value Added Products from Biorefineries, Vol. 34, IEA Bioenergy, Task 42 Biorefinery 2012, 1–33.
Confined hot-pressurized water in Brønsted-acidic beta zeolite speeds up the O demethylation of guaiacol - Nature Catalysis
Abstract Biorefinery technologies that convert lignin into platform chemicals are essential to reduce our future dependence on fossil resources. In these technologies, a key process is the acid-catalysed O demethylation of guaiacol derivatives in hot-pressurized water using Brønsted mineral acids or microporous zeolites. The fundamental understanding of how hydronium ions behave in a confined environment versus bulk is still limited.
The Overlooked Solvent Effects: Reconsider the Paradigm in Semiconductor Photocatalysis
The Overlooked Solvent Effects: Reconsider the Paradigm in Semiconductor Photocatalysis Semiconductor photocatalysis has seen decades of development, with most attention focused on two key elements: semiconductors Semiconductor photocatalysis has seen decades of development, with most attention focused on two key elements: semiconductors and solutes. However, the third “S” — solvents — which play a crucial role in condensed-phase reactions, has been surprisingly largely overlooked in this field.
Depolymerisation - hydrogenation of condensed tannins as strategy for generating flavan-3-ol monomers
Depolymerisation - hydrogenation of condensed tannins as strategy for generating flavan-3-ol monomers Thijs Vangeel, Ruben Smets, Mik Van Der Borght and Bert Sels Abstract Flavan-3-ol monomers are interesting, functionalised phenolic building blocks. Here, a strategy is presented for producing these flavan-3-ol monomers, starting from condensed tannins present in biomass waste streams such as tree bark.
Identification and quantification of lignin monomers and oligomers from reductive catalytic fractionation of pinewood with GC × GC - FID/MS
Identification and quantification of lignin monomers and oligomers from reductive catalytic fractionation of pinewood with GC × GC - FID/MS Hang Dao Thi, Korneel Van Aelst, Sander Van den Bosch, Rui Katahira, Gregg T. Beckham, Bert Sels and Kevin M. Van Geem Abstract Thorough lignin characterization is vital to understand the physicochemical properties of lignin and to evaluate lignocellulose biorefinery processes.
Protection strategies enable selective conversion of biomass
Minireview Li Shuai Corresponding Author E-mail address: shuailiuw@gmail.com Fujian Agriculture and Forestry University, Mateirals Engineering, Shanxiao Dian Rd, 350002 Fuzhou, CHINA Search for more papers by this author PDF PDF ShareShare Abstract Selective and economic conversion of lignocellulosic biomass components, cellulose, hemicelluloses, and lignin, to bio‐based fuels and chemical, is the major goal of biorefineries but low yields and selectivities for fuel precurors such as sugars,...
Catalytic Gas‐Phase Production of Lactide from Renewable Alkyl Lactates
Communication Catalytic Gas‐Phase Production of Lactide from Renewable Alkyl Lactates Prof. Michiel Dusselier Corresponding Author E-mail address: michiel.dusselier@kuleuven.be http://orcid.org/0000-0002-3074-2318 Centre for Surface Chemistry and Catalysis, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium Search for more papers by this author Prof. Bert F.
Bio-based amines through sustainable heterogeneous catalysis
The production of amines from biomass is a growing field of interest. Particularly the amination of bio-based alcohols receives a lot of attention. In this review, we discuss recent progress in the development of efficient heterogeneous catalysts. The substrate scope for the production of bio-based amines is not limited to (hemi)cellulosic alcohols.
Heterogeneous catalysis for bio-based polyester monomers from cellulosic biomass: advances, challenges and prospects
It is a 21st century challenge to develop a more sustainable chemical industry where fossil-based resources are, where possible, preferentially replaced by renewable alternatives. Biobased polymers, in particular those derived from cellulose or other carbohydrates, are often considered benign alternatives for petrochemical plastics. The majority of bioplastic precursors are currently derived from fermentation or biotechnology.
Lignin-first biomass fractionation: the advent of active stabilisation strategies
During the past decade, a growing scientific community is eagerly seeking for effective lignin valorisation approaches. Thought-out utilisation of the world’s most abundant resource of bio-aromatics could substantially augment the profitability of future lignocellulosic biorefineries. From a multitude of complementary valorisation opportunities (e.g., composite materials, dispersants, carbon fibres), harnessing lignin as renewable feedstock for chemicals forms an alluring challenge.
Depolymerization of 1,4-Polybutadiene by Metathesis: High Yield of Large Macrocyclic Oligo(butadiene)s by Ligand Selectivity Control
Herein, we demonstrate a practical high yield preparation of large macrocyclic oligo(butadiene)s, preferably the C16 to C44 fraction, from commercial 1,4-polybutadiene by exploring intramolecular backbiting with a series of commercially available Ru catalysts. Product contamination with linear fragments is restricted by using high molecular weight 1,4-polybutadiene with low content of 1,2-constructs (vinyl groups).
Afvalproduct van papierindustrie als nieuwe chemische bouwsteen
Lignine is een stof uit de celwand van planten, die fungeert als lijm tussen de vezels. Bij papierwinning waarbij hout wordt verwerkt tot papierpulp, is lignine een afvalproduct. Er gebeurt al langer onderzoek naar mogelijkheden om lignine een toegevoegde waarde te geven, legt professor Bert Sels uit.
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