Hero J. Heeres

TL;DR: Renewable Resources Robert-Jan van Putten,†,‡ Jan C. van der Waal,† Ed de Jong,*,† Carolus B. Rasrendra,*,⊥ Hero J. Heeres,*,‡ and Johannes G. de Vries.

TL;DR: In this article, a variety of heterogeneous noble-metal catalysts were tested for the upgrading of fast pyrolysis oil by catalytic hydrotreatment, and the results were compared to those obtained with typical hydrotreating catalysts (sulfided NiMo/Al2O3 and CoMo/CoMo/AO3), and the Ru/C catalyst was found to be superior to the classical hydrotreated catalysts with respect to oil yield and deoxygenation level.

TL;DR: An extensive multiple-technique-based study of the formation, molecular structure, and morphology of humins is presented as a function of sugar feed, the presence of additives, and the applied processing conditions, finding that humins consist of a furan-rich polymer network containing different oxygen functional groups.

TL;DR: In this article, the acid-catalysed decomposition of glucose to levulinic acid has been performed in a broad temperature window (140-200°C), using sulphuric acid as the catalyst (0.05-1 M) and a initial glucose concentration between 0.1 and 1 M. A kinetic model of the reaction sequence was developed including the intermediate 5-hydroxymethyl-2-furaldehyde (HMF) and humins byproducts using a power-law approach.

TL;DR: In this paper, a detailed kinetic study on the acid-catalyzed hydrolysis of cellulose to levulinic acid was performed in a temperature window of 150−200 °C, sulfuric acid concentrations between 0.05 and 1 M, and initial cellulose intakes between 1.7 and 14 wt %.