A Novel Consecutive Approach for the Preparation of Cu–MgO Catalysts with High Activity for Hydrogenation of Furfural to Furfuryl Alcohol

Influence of the Incorporation of Basic or Amphoteric Oxides on the Performance of Cu-Based Catalysts Supported on Sepiolite in Furfural Hydrogenation

“…The use of amphoteric or basic supports, such as ZnO and MgO, favors metal-support interaction, which can increase the number of available active centers and so the catalytic activity, as well as the resistance to deactivation due to a weaker interaction with FUR molecules. Thus, different supports have been used for the preparation of Cu-based catalysts: SiO 2 [16,[25][26][27], Al 2 O 3 [25,28], MgO [22,23,29,30], ZnO [25,[31][32][33], and CeO 2 [34], and their catalytic activity in FUR hydrogenation has been evaluated. In this sense, our research group has recently showed that the strong interaction of Cu 0 sites with the amphoteric ZnO avoids the deactivation of the Cu species by a sintering process, especially for the Cu/ZnO catalyst with the lowest metal content, which still shows a FOL yield of 60 mol% after 24 h of TOS [31].…”

Heterogeneous Catalytic Upgrading of Biofuranic Aldehydes to Alcohols

“…Gratifyingly, this catalytic system gave FF conversion and FFA selectivity of 93.2 and 89.2% at 300°C, respectively (Xu et al, 2011). Ghashghaee et al (2017) reported a novel method based on a combination of coprecipitation and hydrothermal methods for the preparation of a series of Cu-MgO catalysts containing various promoters (Co and Ca) and certain morphology. Ca is a basic promoter, and an appropriate amount of Ca can improve the thermal stability of the Cu-based catalyst in the hydrogenation reaction (Burch et al, 1990).…”

On demand production of ethers or alcohols from furfural and HMF by selecting the composition of a Zr/Si catalyst

“…[7][8][9] Environmentally acceptable direct hydrogenation catalysts for the transformation of furfural and HMF into related alcohols or diols are based on nanoparticles of Cu, Pd, Pt, Ru, Au, Co, and Ni. 6,7,[10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] Catalytic systems that don't require the use of molecular hydrogen are considered even more sustainable alternatives for the hydroupgrading of biomass-derived molecules, such as furfural and HMF, allowing substantial reduction of the complexity of production systems and therefore the costs. 9 Also the reaction selectivity can be improved if CTH occurs through a concerted Meerwein-Ponndorf-Verley (MPV) mechanism, that is without the evolution of molecular hydrogen, by which the reduction has an exclusive selectivity towards the transformation of a carbonyl group into a hydroxyl group.…”