Catalytic direct dehydrogenation of ethyl lactate to produce ethyl pyruvate over a synergetic Cu0/Cu+ interface

Lu, Shiyao; Zhang, Jian; Meng, Hao; Qin, Xiaoyuan; Huang, Jianbin; Liang, Yehao; Xiao, Feng‐Shou

doi:10.1016/j.apcatb.2022.122329

Cited by 10 publications

(2 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As the glucose-to-sorbitol transformation only involves a single catalytic hydrogenation process, the activation of a hydrogen molecule over the catalyst should play an important role in its catalytic performance, which can be well illustrated by the H 2 -TPD technique. As presented in Figure d, a clear peak could be noticed at around 100 °C in all of the samples, representing the desorption of adsorbed [H] species over the Ni borides. , This temperature is similar to the reaction temperature, indicating the good capability of the Ni borides toward the adsorption of the hydrogen molecule at a relatively low temperature. Interestingly, with the increase in the KH 2 PO 4 amount from 0 to 10 mmol, the desorption amount of the [H] species greatly increased from 27.9 to 93.2 μmol/g, which demonstrated the enhanced hydrogen adsorption ability of the catalyst.…”

Section: Resultsmentioning

confidence: 99%

Efficient Catalytic Hydrogenation of Glucose to Sorbitol over Metallic Nickel-Rich Nickel Borides under Mild Reaction Conditions

Wang,

Cai,

Liu

et al. 2024

Energy Fuels

View full text Add to dashboard Cite

Catalytic hydrogenation of carbohydrates over the Raney Ni catalyst is an important industrial process to produce valuable polyols. However, this process generally encounters challenges such as harsh reaction conditions, low catalytic activity, and catalyst deactivation. In this contribution, metallic nickel-rich nickel borides (NiBO-nKH2PO4) were successfully constructed via a simple chemical reduction method with potassium dihydrogen phosphate (KH2PO4) as the buffering agent and sodium borohydride (NaBH4) as the reducing reagent. Especially, the obtained NiBO-10KH2PO4 afforded quantitative sorbitol yield from the catalytic hydrogenation of glucose under mild reaction conditions within 1 h (80 °C and 1 MPa H2). Compared with the reported literature for the production of sorbitol from glucose, the developed NiBO-10KH2PO4 catalyst circumvents the use of a high hydrogen pressure and reaction temperature while delivering excellent catalytic performance and stability. Moreover, the experimental analysis demonstrated that the obtained nickel borides, with the assistance of KH2PO4, possessed abundant metallic nickel species, which favored the adsorption and activation of hydrogen molecules and thus largely promoted the hydrogenation of glucose. This work provides new insights into the rational design of practical nickel-based catalysts for the efficient catalytic hydrogenation of carbohydrates.

show abstract

Section: Resultsmentioning

confidence: 99%

Efficient Catalytic Hydrogenation of Glucose to Sorbitol over Metallic Nickel-Rich Nickel Borides under Mild Reaction Conditions

Wang,

Cai,

Liu

et al. 2024

Energy Fuels

View full text Add to dashboard Cite

show abstract

“…As shown in Figure 7a, the Na-Beta used for 1 h (Na-Beta-u1h) exhibited two stages of weight loss in the temperature ranges of 30−250 and 250−550 °C. The first stage was related to the evaporation of adsorbed species (methyl lactate and reaction products), 50 while the second stage resulted from the calcination of oligomers and coke species. 17 Correspondingly, the peaks at 366 and 436 °C in the DSC curve can be attributed to the calcination of oligomers and coke species, respectively.…”

Section: ■ Introductionmentioning

confidence: 99%

Efficient Conversion of Methyl Lactate to Methyl Acrylate over Cesium-Modified Al-Rich Beta Zeolites

Zhang

Meng

et al. 2023

ACS Sustainable Chem. Eng.

Self Cite

View full text Add to dashboard Cite

Dehydration of methyl lactate (ML) obtained from biomass is a sustainable route for the production of methyl acrylate (MA). Herein, we demonstrate that cesium-exchanged Al-rich Beta zeolite (Cs-Beta) is highly efficient for the dehydration of ML to MA, exhibiting full ML conversion with 87.4% MA yield at 340 °C. In situ FT-IR spectra and kinetic studies provide evidence that the ML dehydration on the Cs-Beta zeolite follows a forward ion-exchange/dehydration/reverse ion-exchange reaction pathway. Model experiments, DFT calculations, TG-DSC analysis, and FT-IR spectra showed that coke formation competes with the dehydration of ML to MA. Kinetic studies and theoretical simulations demonstrate that cesium cations in the micropores of Beta zeolite have a strong steric hindrance, suppressing the formation of oligomers and coke. These results offer new insights for developing highly selective and stable catalysts for the dehydration of ML to MA in the future.

show abstract

Carbon nitride doped V O /SBA-15 as highly efficient catalysts for the oxidation of ethyl lactate to ethyl pyruvate

Liu,

Xu,

Cai

et al. 2024

Applied Catalysis A: General

View full text Add to dashboard Cite

Catalytic direct dehydrogenation of ethyl lactate to produce ethyl pyruvate over a synergetic Cu0/Cu+ interface

Cited by 10 publications

References 59 publications

Efficient Catalytic Hydrogenation of Glucose to Sorbitol over Metallic Nickel-Rich Nickel Borides under Mild Reaction Conditions

Efficient Catalytic Hydrogenation of Glucose to Sorbitol over Metallic Nickel-Rich Nickel Borides under Mild Reaction Conditions

Efficient Conversion of Methyl Lactate to Methyl Acrylate over Cesium-Modified Al-Rich Beta Zeolites

Carbon nitride doped V O /SBA-15 as highly efficient catalysts for the oxidation of ethyl lactate to ethyl pyruvate

Contact Info

Product

Resources

About