Effect of oxygen content of biochar on glucose isomerization in carbon-based Mg catalysts: achieving excellent catalytic efficiency and stability DOI

Xiheng Kang,

Zi You,

Siyu Zhao

et al.

Advanced Composites and Hybrid Materials, Journal Year: 2024, Volume and Issue: 8(1)

Published: Dec. 26, 2024

Language: Английский

Enhancing the Kinetics of Glucose Electro-Oxidation by Modulating the Binding Energy of Hydroxyl on Cobalt-Based Catalysts DOI
Fei Lu, Bin Zhang, Libo Shen

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 24, 2025

Replacing the sluggish anodic water oxidation reaction with glucose (GOR) offers an energy-saving strategy to obtain value-added products during hydrogen production process. However, rational design of GOR electrocatalyst explicit structure–property relationship remains a challenge. In this study, by using cobalt chalcogenides as model catalysts, we performed in-depth study catalytic mechanism CoS and CoSe nanosheets. Experimental theoretical results revealed that pathway on strongly depends their binding energy hydroxyl (OHBE). For weak OHBE, proceeds through "electrophilic oxygen" route. While for CoSe, due strong surface reconstruction occurs before therefore follows "electrochemical-chemical" Inspired these findings, customized was proposed regulate OHBE which involved introducing F atoms into enhance its weakening doping Zn atoms. The optimized F-doped Zn-doped catalysts both exhibited significantly improved performance GOR. This thus provides verifiable paradigm improving via sheds light novel in future.

Language: Английский

Citations

1
Advanced development of dual-atom catalysts: From synthesis methods to versatile electrocatalytic applications DOI
Mengyang Zhang, Xiaomin Lu, Zefei Wu

et al.

Journal of Power Sources, Journal Year: 2024, Volume and Issue: 613, P. 234923 - 234923

Published: June 19, 2024

Language: Английский

Citations

6
Steering K/C dual sites to orient Lewis acid/oxygen species for photo-upgrading of biomass sugars into lactic acid DOI

Luo Qi-zhi,

Jinshu Huang,

Tengyu Liu

et al.

Rare Metals, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 17, 2025

Language: Английский

Citations

0
New Insights in the Formation Mechanism of Cellulose‐Based Biochar DOI Open Access

Xiheng Kang,

Zi You,

Yong-Heng Huang

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

In the process of hydrothermal carbonization cellulose to produce biochar, promotion or inhibition roles main hydrolysates such as 5-hydroxymethylfurfural (5-HMF), furfural (F), formic acid (FA), and levulinic (LA) on biochar formation are still unknown, limiting development controllable preparation biochar. Here, 5-HMF itself, mixtures F, FA, well LA are, respectively, used precursor for elucidate their interactions formation. Combining consumption rate reactants physicochemical properties resulting results have been found that FA promote but F inhibit The promoting effect is reflected in its ability reduce critical aggregation concentration colloidal particles improving precipitation. Additionally, can react with ─OH surface form furan─FA compounds increase particle size oxygen-containing content (O/C = 0.39). This work first a new pathway effecting provides insight cellulose-based

Language: Английский

Citations

0
Chromium-Doped Biomass-Based Hydrochar-Catalyzed Synthesis of 5-Hydroxymethylfurfural from Glucose DOI Open Access

Hui‐Min Gao,

Wei Mao,

Pengfeng Xiao

et al.

Polymers, Journal Year: 2025, Volume and Issue: 17(10), P. 1413 - 1413

Published: May 20, 2025

5-Hydroxymethylfurfural (HMF) is a versatile carbohydrate-derived platform chemical that has been used for the synthesis of number commercially valuable compounds. In this study, several chromium (Cr)-doped, biomass-derived hydrochar catalysts were synthesized via one-pot method using starch, eucalyptus wood, and bagasse as carbon sources. Then, performance these materials catalytic conversion glucose into HMF was evaluated by, primarily, yield HMF. The synergistic interactions between Cr salt different biomass components investigated, along with their effects on efficiency. differences in activity analyzed through structural characterization, well assessments acid density strength. Among catalysts, Cr5BHC180 derived from presented highest activity, achieving an 64.5% aqueous solvent system dimethyl sulfoxide (DMSO) saturated sodium chloride (NaCl) at 170 °C after 5 h. After four cycles, decreased to 38.7%. Characterization techniques such N2 adsorption–desorption Py-FTIR suggested decline due pore blockage site coverage by humic by-products, demonstrated fact regeneration calcination 300 restored 50.5%.

Language: Английский

Citations

0
Developing a new ethylene glycol/H2O pretreatment system to achieve efficient enzymatic hydrolysis of sugarcane bagasse cellulose and recover highly active lignin: Countercurrent extraction DOI

Zi You,

Xiheng Kang,

Siyu Zhao

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 354, P. 128564 - 128564

Published: June 25, 2024

Language: Английский

Citations

3
Density Functional Theory Study on Na+ and K+ Catalysis in the Transformation of Glucose to Fructose and HMF in Hydrothermal Environments DOI Creative Commons
Long Gao,

Qihao Chen,

Yanhong Wang

et al.

Molecules, Journal Year: 2024, Volume and Issue: 29(20), P. 4849 - 4849

Published: Oct. 13, 2024

Hydrothermal carbonization (HTC) is an efficient method for converting biomass into biochar. Hydrochar contains catalytic components such as alkali and alkaline earth metals (AAEMs); however, the mechanisms by which highly active potassium (K) sodium (Na) catalyze conversion of small carbon-water compounds hydrochar in hydrothermal environments remain unclear. In this study, glucose was used a molecule model, Na

Language: Английский

Citations

2
Enhanced Isomerization Performance of Unsupported Ni–Nb–O Catalyst for One-Step Hydrogenation of Jatropha Oil to Alkanes DOI

Changlong Yin,

Yihang Han,

Lingtong Meng

et al.

Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(23), P. 22904 - 22915

Published: Nov. 21, 2024

Biolipids and oil hydrogenation are prominent alternatives to petroleum-based fuels. Currently, the catalysts used limited deoxidation activity, resulting in reaction products with a high content of n-alkanes waxes, necessitating secondary treatment increase iso-alkane content. Herein, an unsupported Ni–Nb–O catalyst trifunctional capabilities (i.e., hydrodeoxygenation, hydrocracking, isomerization) was developed for efficient conversion methyl stearate jatropha into small molecular alkanes. The metal ratio significantly affects catalytic performance, which Ni/Nb = 2:0.6 exhibited highest isomerization activity. Moreover, 84% deoxidized C8–C17 hydrocarbons, 53.4% being isomeric hydrocarbons. also demonstrated excellent stability, maintaining 54% selectivity iso-alkanes feedstock during 240 h operation.

Language: Английский

Citations

1
The co-production of xylose, fermentable glucose and β-O-4 linkage-rich lignin through efficiently dismantling sugarcane bagasse DOI
Yunwu Zheng,

Xiheng Kang,

Zi You

et al.

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: unknown, P. 138807 - 138807

Published: Dec. 1, 2024

Language: Английский

Citations

0
Effect of oxygen content of biochar on glucose isomerization in carbon-based Mg catalysts: achieving excellent catalytic efficiency and stability DOI

Xiheng Kang,

Zi You,

Siyu Zhao

et al.

Advanced Composites and Hybrid Materials, Journal Year: 2024, Volume and Issue: 8(1)

Published: Dec. 26, 2024

Language: Английский

Citations

0