ZrW catalyzed cellulose conversion in hydrothermal conditions: Influence of the calcination temperature and insights on the nature of the active phase

Nguyen, Van Lap; Dandach, Amar; Vu, Thi Thu Ha; Fongarland, Pascal; Essayem, N.

doi:10.1016/j.mcat.2019.110518

Cited by 8 publications

(6 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…51 Such complexes have also been observed with Zr oxide, creating hydrogen bonds with carbohydrates (Figure 6), stabilizing the TS of the Lewis acid catalyzed reactions. 54 LA yields as high as 91% from cellulose and 97% from glucose were observed with ErCl 3 , which are the highest yields observed to our knowledge (Table 2). 7,55 Lanthanide triflates have very high Lewis acidities and solubilities and achieve LA yields from glucose in water exceeding 70% (Table 2).…”

Section: Acs Omegasupporting

confidence: 45%

“…They also found that these complexes assist the specific C 3 –C 4 cleavage during fructose retro-aldol, as it was calculated that the C 2 –C 3 and C 4 –C 5 bond lengths decrease by 0.009–0.019 Å when fructose complexes with Y(III), while the C 3 –C 4 bond length increases by 0.012 Å during the complexation . Such complexes have also been observed with Zr oxide, creating hydrogen bonds with carbohydrates (Figure ), stabilizing the TS of the Lewis acid catalyzed reactions . LA yields as high as 91% from cellulose and 97% from glucose were observed with ErCl 3 , which are the highest yields observed to our knowledge (Table ).…”

Section: Homogeneous Catalysismentioning

confidence: 99%

See 1 more Smart Citation

Homogeneous and Heterogeneous Catalysis of Glucose to Lactic Acid and Lactates: A Review

Saulnier-Bellemare,

Patience

2024

ACS Omega

View full text Add to dashboard Cite

The current societal demand to replace polymers derived from petroleum with sustainable bioplastics such as polylactic acid (PLA) has motivated industry to commercialize ever-larger facilities for biobased monomers like lactic acid. Even though most of the lactic acid is produced by fermentation, long reaction times and high capital costs compromise the economics and thus limit the appeal of biotechnological processes. Catalytic conversion of hexose from biomass is a burgeoning alternative to fermentation. Here we identify catalysts to convert glucose to lactic acid, along with their proposed mechanisms. High Lewis acidity makes erbium salts among the most active homogeneous catalysts, while solvent coordination with the metal species polarize the substrate, increasing the catalytic activity. For heterogeneous catalysts, Sn-containing bimetallic systems combine the high Lewis acidity of Sn while moderating it with another metal, thus decreasing byproducts. Hierarchical bimetallic Sn-Beta zeolites combine a high number of open sites catalyzing glucose isomerization in the mesoporous regions and the confinement effect assisting fructose retro-aldol in microporous regions, yielding up to 67% lactic acid from glucose. Loss of activity is still an issue for heterogeneous catalysts, mostly due to solvent adsorption on the active sites, coke formation, and metal leaching, which impedes its large scale adoption.

show abstract

Section: Acs Omegasupporting

confidence: 45%

Section: Homogeneous Catalysismentioning

confidence: 99%

Homogeneous and Heterogeneous Catalysis of Glucose to Lactic Acid and Lactates: A Review

Saulnier-Bellemare,

Patience

2024

ACS Omega

View full text Add to dashboard Cite

show abstract

“…We observed a different reactivity than that occurring with Brønsted acids (see Scheme 1). While the latter form preferentially levulinic acid, Lewis acids formed lactic acid as main product up to 30 mol% yield [59,60], a possible monomer for biosourced plastics. This corresponds to the first report on the formation of lactic acid from cellulose, even more with a water-tolerant heterogeneous catalyst [61].…”

Section: Transformation Of Cellulose In Watermentioning

confidence: 99%

A Landscape of Lignocellulosic Biopolymer Transformations into Valuable Molecules by Heterogeneous Catalysis in C’Durable Team at IRCELYON

et al. 2021

Self Cite

View full text Add to dashboard Cite

This review article highlights part of the research activity of the C’Durable team at IRCELYON in the field of sustainable chemistry. This review presents a landscape of the work performed on the valorization of lignocellulosic biopolymers. These studies intend to transform cellulose, hemicellulose and lignin into valuable molecules. The methodology usually consists in evaluating the behavior of the biopolymers in the absence of catalyst under various conditions (solvent, temperature), and then to assess the influence of a catalyst, most often a heterogeneous catalyst, on the reactivity. The most significant results obtained on the upgrading of cellulose and lignin, which have been mainly investigated in the team, will be presented with an opening on studies involving raw lignocellulose.

show abstract

“…16 Nguyen et al fabricated tungstated zirconia solid acid catalysts for cellulose conversion in hydrothermal conditions and showed that uncalcined ZrW exhibited higher catalytic activity and stability than the calcined ZrW catalyst. 17 The trial-and-error method is typically used in the preparation of solid acid catalysts, the rational fabrication of excellent Brønsted acid activity also points to the need for the interpretation of the origins of catalytic activity. [18][19][20] Computational studies have been carried out to characterize the Brønsted and Lewis acidity of amorphous and crystalline solid catalysts.…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical study of ZrMo-KIT-6 solid acid catalyst with abundant Brønsted acid sites

Liang

Huang

et al. 2022

RSC Adv.

View full text Add to dashboard Cite

show abstract

ZrW catalyzed cellulose conversion in hydrothermal conditions: Influence of the calcination temperature and insights on the nature of the active phase

Cited by 8 publications

References 44 publications

Homogeneous and Heterogeneous Catalysis of Glucose to Lactic Acid and Lactates: A Review

Homogeneous and Heterogeneous Catalysis of Glucose to Lactic Acid and Lactates: A Review

A Landscape of Lignocellulosic Biopolymer Transformations into Valuable Molecules by Heterogeneous Catalysis in C’Durable Team at IRCELYON

Experimental and theoretical study of ZrMo-KIT-6 solid acid catalyst with abundant Brønsted acid sites

Contact Info

Product

Resources

About