Study of Ni, Pt, and Ru Catalysts on Wood‐based Activated Carbon Supports and their Activity in Furfural Conversion to 2‐Methylfuran
Eveliina MäkeläRiikka LahtiSalla JaatinenHenrik RomarTao HuRiikka L. PuurunenUlla LassiReetta Karinen
29
Citation
82
Reference
10
Related Paper
Citation Trend
Abstract:
Abstract Bio‐based chemicals can be produced from furfural through hydrotreatment. In this study, 2‐methylfuran (MF), a potential biofuel component, was produced with Pt, Ru, and Ni catalysts supported on wood‐based activated carbons. The catalytic hydrotreatment experiments were conducted in a batch reactor at 210–240 °C with 2‐propanol as solvent and 40 bar H 2 pressure. Two types of activated carbon supports were prepared by carbonization and activation of lignocellulosic biomass (forest‐residue‐based birch and spruce from Finland). Both types of activated carbons were suitable as catalyst supports, giving up to 100 % furfural conversions. The most important factors affecting the MF yield were the metal dispersion and particle size as well as reaction temperature. The highest observed MF yields were achieved with the noble metal catalysts with the highest dispersions at 240 °C after 120 min reaction time: 3 wt % Pt on spruce (MF yield of 50 %) and 3 wt % Ru on birch (MF yield of 49 %). Nickel catalysts were less active most likely owing to lower dispersions and incomplete metal reduction. Interesting results were obtained also with varying the metal loadings: the lower Pt loading (1.5 wt %) achieved almost the same MF yield as the 3 wt % catalysts, which can enable the production of MF with high yields and reduced catalyst costs. Based on this study, biomass‐based renewable activated carbons can be used as catalyst supports in furfural hydrotreatment with high conversions.Keywords:
Noble metal
Lignocellulosic Biomass
Carbon fibers
Hydrodeoxygenation
This work investigates the vapor phase hydrodeoxygenation (HDO) of furfural (FFR) to 2-methyl furan (2-MeF) over a series of TiO 2 -supported mono and bimetallic Cu-Ni catalysts with a fixed Cu content (10 wt.%) and varying Ni content (0-20 wt.%). The catalysts were synthesized by wet impregnation method, and characterized by XRD, H 2 -TPR, SEM, N 2 -physisorption, Raman spectroscopy, and NH 3 -TPD. Detailed studies were carried out to evaluate the effect of various process parameters such as Ni content, temperature, and contact time on the selectivity of 2-MeF. Ni content of the bimetallic catalysts and temperature played a significant role in product distribution than the contact time. The bimetallic catalyst with the composition 10%Cu-10%Ni was observed to be the optimum, providing a FFR conversion of 100%, and a 2-MeF selectivity of 84.5% at 200 °C, H 2 /FFR = 15, and WHSV = 0.87 g FFR h -1 g catalayst -1 after 6 h time-on-stream (TOS). During TOS study, the catalyst exhibited a stable 100% FFR conversion and ~85% selectivity towards 2-MeF over a period of 12 h. Even after a period of 15 h, conversion and selectivity values remained greater than 90% and 70%, respectively.
Hydrodeoxygenation
Bimetallic strip
Furan
Cite
Citations (0)
Lignocellulosic Biomass
5-hydroxymethylfurfural
Stalk
Cite
Citations (360)
The use of renewable sources for obtainment of chemicals, biofuels, materials and energy has become each time larger due to environmental, political and economical problems of non-renewable energies utilization. Among several products that can be obtained from lignocellulosic biomass, which is a renewable source, there is furfural, a chemical from which many other value added chemical products can be obtained. The main route for furfural production consists of an acid hydrolysis of hemicelluloses present in lignocellulosic biomass to obtain xylose, which goes through a dehydration reaction to produce furfural. Due to the presence of an aldehyde group and a conjugated system of double bounds, furfural can go through several reactions, allowing the production of a range of value added products. In this sense, this article performs a review about mechanisms of furfural production from lignocellulosic biomass, highlighting its chemical properties which enable its utilization in different industrial applications of economic interest.
Lignocellulosic Biomass
Renewable resource
Cite
Citations (141)
Hydrodeoxygenation
Noble metal
Cite
Citations (4)
DFT calculations reveal that the oxygen-containing species prohibit the hydrodeoxygenation of furfural on a Re/Pt bimetallic system.
Hydrodeoxygenation
Bimetallic strip
Promotion (chess)
Cite
Citations (17)
Hydrodeoxygenation
Methyl isobutyl ketone
Furan
Aldol condensation
Hydroxymethyl
Alkane
Cite
Citations (30)
A green and efficient catalytic system for the one-pot production of 1-octyl acetate from biomass-derived furfural-acetone under mild conditions was developed by selective hydrodeoxygenation over Pd/C and Sc(OTf)3 as a cocatalytic system.
Hydrodeoxygenation
Cite
Citations (16)
Hydrodeoxygenation (HDO) is considered as one of the promising methods for upgrading bio-oil from pyrolysis by removal of the oxygencontaining groups. The bio-oil product from pyrolysis of lignocellulosic biomass is a complex mixture of aromatic compounds such as furfural, furanone, phenol and their derivatives. Among these components, furfural is one of the major compositions. In this study, the model compound of furfural underwent HDO in fixed-bed reactor over monometallic catalysts Pt, Ru prepared by incipient-wetness impregnation method. The catalysts were supported on γ-Al2O3. The effect of catalyst activity and stability on FMK at different reaction temperatures and metal loading were investigated. The 1 wt% Pt/γ-Al2O3 catalyst (calcinated at 500 °C) showed the high activity with 87.04% in furfural conversion at 350 °C. The produced gas and liquid was analyzed by gas chromatography (GC) with TCD/FID detector and GC-MS, respectively, to determine the product compositions.
Hydrodeoxygenation
Incipient wetness impregnation
Cite
Citations (0)
Noble-metal catalysts are useful for the conversion of recalcitrant and highly oxygenated compounds derived from biomass, since they are remarkably active for the reduction reactions and more stable than base metals under harsh conditions. In this chapter, we show advances in research on the catalysis of noble metals through the hydrolytic hydrogenation and hydrodeoxygenation of lignocellulosic biomass and related compounds as representative reactions in the valorization of biomass. Analytical techniques using high-performance liquid chromatography and gas chromatography are also discussed.
Hydrodeoxygenation
Noble metal
Lignocellulosic Biomass
Base metal
Cite
Citations (3)
The production of furfural from renewable sources, such as lignocellulosic biomass, has gained great interest within the concept of biorefineries. In lignocellulosic materials, xylose is the most abundant pentose, which forms the hemicellulosic part. One of the key steps in the production of furfural from biomass is the dehydration reaction of the pentoses. The objective of this work was to assess the conditions under which the concentration of furfural is maximized from a synthetic, monophasic, and homogeneous xylose medium. The experiments were carried out in a microwave reactor. FeCl
Lignocellulosic Biomass
Pentose
Cite
Citations (20)