Supported Metal Catalysts for Total Hydrogenation of Furfural and 5-Hydroxymethylfurfural

Abstract

Total hydrogenation of furfural and 5-hydroxymethylfurfural (HMF), both of which are important platform chemicals from biomass, produces tetrahydrofurfuryl alcohol (THFA) and 2,5-bis(hydroxymethyl)tetrahydrofuran (BHTHF), respectively, and these products can be used as solvent or raw material of resin. Ni catalysts can give good yields in these reactions; however the low activity and stability are problems. Supported monometallic Pd and Ru catalysts have been reported to be also active in hydrogenation, although the selectivity for total hydrogenation tends to be lower. Other monometallic catalysts such as Cu and Pt generally have low activity in furan ring hydrogenation of furfuryl alcohol (FOL) and 2,5-bis(hydroxymethyl)furan intermediates. We explored various multicomponent catalysts and found that Ni _ Pd/SiO2, Pd _ Ir/SiO2 and Rh _ Ir _ ReOx/SiO2 give good yield of THFA or BHTHF with much higher activity than the mixture of each component supported on SiO2.

Metal Catalysts for the Efficient Transformation of Biomass‐derived HMF and Furfural to Value Added Chemicals

“…Various preeminent reviews have appeared in recent years on the production, upgradation and applications of different biomass‐derived compounds including furans . For instance, Wang et al.…”

“…Various preeminent reviewsh ave appeared in recent years on the production,u pgradation and applicationso fd ifferent biomass-derived compounds including furans. [1,3,31,[35][36][37][38][39][40][41][42][43] For instance,W ang et al re-evaluated hydrotreating and hydrodeoxygenation of bio-oils and their different oxygen-containing compounds such as furans overn on-sulfide metal catalysts. [1] In the same direction, the catalytic upgradation of biomass-derived compoundso ver magnetic catalysts was extensively reviewedb yL iu et al [3] Furthermore, Nakagawa et al described catalytic hydrogenation of furanicc ompounds over several heterogeneous catalysts in the presence of hydrogen gas, [31] while Zhang et al reviewed various catalytic processes for the production of FDCA and its derivatives from HMF.…”

Value-Added Bio-Chemicals Commodities from Catalytic Conversion of Biomass Derived Furan-Compounds

“…The formation of 1,2,6-hexanetriol (HT) leads to one-spot or sequential liquid phase [25][26][27]41,42] hydrogenation and ring-opening reactions via hydrogenolysis using mainly batch reactors [26,27,41,42]. Considering this, C=O, C=C and C-O (belonging to furan-ring) bonds cleavage is desirable for the HT production.…”

“…New research reported in the literature is based on the ring-opening of HMF and FF to produce aliphatic or linear polyols (sugar alcohols) [23][24][25] for the chemical industry [26] by means of hydrogenation processes. Among these products, whose general formula is C n H 2n+2 O n , the most investigated alcohols are diols and triols.…”

“…Among these products, whose general formula is C n H 2n+2 O n , the most investigated alcohols are diols and triols. These kinds of alcohols are useful as polymeric monomers, especially diols, to produce polyester and polyurethanes, with a variety of applications such as resins, coatings, plasticizers and adhesives [23][24][25]. Moreover, these chemical commodities can also be used as: i) ingredients in the field of cosmetics and medicaments as humectants, solvents and viscosity-controlling agents, ii) components in printing inks, disinfectants and surfactants and iii) in the case of triols, as precursors of their diol counterparts [23,27].…”