INDUSTRIAL CROPS AND PRODUCTS
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2019
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IF 4.191
Yan Ma,Jingxin Wang,Weihong Tan,Jianchun Jiang,Junming Xu,Kui Wang
Using lignocellulosic biomass as a feedstock for sustainable production of platform molecules is of great significance. We examined the directional liquefaction coupled with efficient stepwise fractionation of bamboo biomass into two groups of chemicals: monosaccharides and aromatic products. When sulfuric acid was used as the catalyst, a conversion of 70% was achieved with a 40% yield of monosaccharides and a 20% yield of aromatics were obtained at 180 °C for 30 min when the catalyst loading was 3.0% per 6.0 g bamboo. The production of 5-hydroxymethylfural (HMF), 5-ethoxymethylfurfural (EMF), ethyl levulinate (EL) and furfural was analyzed in terms of by-products formation. Due to similar physiochemical properties in each fraction, the platform molecules could broaden a new paradigm of bamboo biomass utilization for renewable energy and value-added biochemicals.
研究领域:
生物化学
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可再生能源
✓ 已验证
DOI
高影响因子
Journal of Bioresources and Bioproducts
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2023
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IF 0
Yan Ma,Hongxiao Wang,Ziyang Wu,Weihong Tan,Guodong Feng,Jianchun Jiang
Ethyl levulinate (EL) is a key biomass-derived compounds due to its socio-economic benefits for the synthesis of commodity chemicals. Herein, we proposed an efficient one-step bamboo conversion to EL in ethanol, and a novel stepwise fractionation to purify EL and lignocellulose degradation products. A proton acid, due to its high catalytic efficiency, yielded 26.65% EL in 120 min at 200 °C. The productions of ethyl glucoside and 5-ethoxymethylfurfural were analyzed in terms of by-products formation. To the best of our knowledge, there is no single report on catalyst for one step synthesis of EL directly from bamboo, as well as a stepwise fractionation to purify EL. Due to similar physiochemical properties in each fraction, the platform molecules could broaden a new paradigm of bamboo biomass utilization for renewable energy and value-added biochemicals. In addition, glucose, ethyl glucoside, corn starch, and microcrystalline cellulose were also investigated as substrates, so that the reaction intermediates of this one-pot procedure were identified and a possible reaction mechanism was proposed.
研究领域:
生物化学
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可再生资源与环境
✓ 已验证
DOI
Sustainable Energy & Fuels
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2020
·Vol. 4
·期 6
·3102-3114
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IF 5.503
Jian He,Yufei Xu,Zhaozhuo Yu,Hu Li,Wenfeng Zhao,Hongguo Wu,Song Yang
The effective and economically feasible tandem synthesis of γ-valerolactone (GVL), a renowned bio-based platform molecule with great promising applications in the production of drop-in chemicals, liquid fuels and polymers, is significantly vital and challenging. Herein, we for the first time describe a direct and effective catalytic system based on ZrOCl2·8H2O capable of facilitating the one-pot one-step tandem synthesis of GVL from bio-based furfural or furfuryl alcohol in 2-propanol by integrating sequential transfer hydrogenation, ring-opening, and transfer hydrogenation–cyclization reactions. A maximum GVL yield of 63.3% and 52.1% was achieved from furfuryl alcohol and furfural at 200 °C, respectively. The synergistic effect of [ZrO(OH)2]n·xH2O species and Brønsted acid species H+, derived from in situ hydrolysis of ZrOCl2·8H2O, is accountable for its remarkable catalytic performance. Moreover, calcination of the leftover solid after tandem synthesis of GVL could fabricate a hollow microrod ZrO2 material, in which the formation of a microrod morphology and hollow structure was probably attributed to the electrostatic repulsion forces among particles in the alcohol solution and removal of generated humins/coke during the reactions within collected solids via calcination, respectively. Importantly, hollow microrod ZrO2 innovatively featuring a high BET surface area, a large amount of acid–base sites and facile active-site accessibility thereby exhibited a superior performance in the catalytic transfer hydrogenation of biomass-derived aldehydes or ketones to ZrO2 prepared by the precipitation method.
研究领域:
化学工程
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材料科学
✓ 已验证
DOI
高影响因子
GREEN CHEMISTRY
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2025
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IF 9.2
Siwei Xu,Nian Xiang,Jie He,Yang Li,Huankun Nie,Liang Huang,Chongbei Wu,Zehui Zhang
Developing new catalytic methods in the effective syntheses of 2,5-furandicarboxylic acid (FDCA) and glycolic acid (GA) through the selective oxidation of biomass-derived 5-hydroxymethylfurfural (HMF) and 1,3-dihydroxyacetone (DHA) offer green and sustainable alternative routes to fossil-based routes in polymer chemistry. Current methods are based on the metal catalysts. Herein, a metal-free carbon catalyst was discovered to be robust for synthesis of FDCA and GA through the selective oxidation of HMF and DHA, respectively. Experimental data and theoretical calculations indicate defective carbon sites and surface oxygen-containing functional groups play pivotal roles in the excellent catalytic performance. The defective sites activate oxygen molecules, producing reactive oxygen species, while the oxygen-functional groups enhance the adsorption and activation of substrates on the catalyst surface, thereby boosting catalytic efficiency. Additionally, the plausible reaction mechanisms were proposed for the selective oxidation of HMF to FDCA as well as DHA to GA over the carbon catalyst are presented.
研究领域:
化学工程
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催化科学
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材料科学
✓ 已验证
DOI
高影响因子
GREEN CHEMISTRY
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2025
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IF 9.2
Xiaodie Zhang,Bin Liu,Yuchen Wang,Ying Long,Zhenhao Xu,Hua-Tay Lin,Rafael Luque,Kai Yan
Electrocatalytic dimerization (ECD) of biomass platform molecules represents a promising route for sustainable fuel and chemical production. However, the widespread application of ECD is limited by catalysts with low activity, undesired product selectivity and poor durability. Herein, we demonstrate the development of high-performing and stable transition metal borides WMoB nanoflakes catalyst for the ECD of biomass-derived furfural (FF) into hydrofuroin (HFN) which is a precursor of jet fuel. As-obtained WMoB nanoflake-likes electrocatalyst, prepared by solvent-free mechanical alloying strategy, could achieve FF conversion of 80.5% and an HFN selectivity of 76.7% at −0.59 V vs. RHE (Reversible Hydrogen Electrode), which is 3.7 times more selective than WB for HFN (20.4%). Experimental and theoretical studies, including X-ray absorption fine structure (XAFS), electrochemical analysis, in situ electron paramagnetic resonance (EPR), kinetic isotope effect (KIE) evaluation and density functional theory (DFT) calculations reveal that high coverage of furan radicals on WMoB nanoflakes play a crucial role for the ECD reaction. The furan radicals-driven C–C coupling reaction offers an alternative strategy to synthesize valuable products from biomass refineries.
研究领域:
可再生能源化学
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催化化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Pei-Ru Zhou,Xiao-Ping Zheng,Ya-Peng Du,Yu Chai,Yu-Cang Zhang,Yan-Zhen Zheng
In this study, polyethylene glycol 200 (PEG200) was employed as hydrogen bond acceptor, while organic acids served as hydrogen bond donors, to formulate poly-deep eutectic solvents (PDESs), which were utilized to pretreat tea stem. Specially, combining PEG200 and oxalic acid (OA) exhibited a notably high cellulose retention (82.03 %) and most efficient hemicellulose (97.02 %) and lignin removal (70.89 %). The removal of amorphous lignin enhanced the crystallinity of the residues and improved the conversion efficiency of cellulose into levulinic acid. Additionally, the structural alterations in lignin samples were analyzed in comparison to milled wood lignin (MWL). The PEG200-OA system facilitated the cleavage of β-O-4 and β-5 linkages and resulted in the degradation of S-type lignin, accompanied by increased condensation of G units. The resulting lignin displayed a reduced molecular weight (Mw of 1283 g/mol, Mn value 531 g/mol) and nanoscale particle size (D 50 212 nm). Furthermore, fluorescent lignin was synthesized through simple oxidation and was used to detect metal ions. Density functional theory (DFT) calculations supported that both PEG200 and OA played a significant role in lignin dissolution, with the weak interactions between DES and lignin primarily driven by hydrogen bonding (characterized as weak, closed-shell, and electrostatic) and van der Waals forces.
研究领域:
生物化学
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材料科学
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环境工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
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2021
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IF 5.909
Putrakumar Balla,Prem Kumar Seelam,Ravi Balaga,Rajendiren Rajesh,Vijayanand Perupogu,Tong Xiang Liang
Sustainable catalysis is the key for the future progress toward biorefinery and bioeconomy. In this work, we designed and developed an inexpensive and eco-friendly Ni@C catalyst for selective hydrogenation of biomass-based platform molecules. A facile synthesized Ni nanoparticles encapsulated in a stabilized carbon support derived from a sacrificial agent copolymer-gel was investigated in the hydrogenation of furfural (FA) to tetrahydrofurfuryl alcohol (THFOL) and levulinic acid (LA) to γ-valeralactone (GVL). The aim is to study the two different reactions over a highly stabilized Ni nanoparticles embedded in the carbon matrix. The Ni@C was found to be active and selective in multi-catalyzed hydrogenation reactions. The Ni nanoparticles with small and ultra-fine sizes are highly dispersed over the carbon matrix. This was concluded through high-resolution micrography images (SEM, TEM) and XRD patterns. In both reactions, a complete conversion of furfural and levulinic acid was achieved with maximum selectivity over the Ni@C catalyst. The effect of reaction temperature, solvent type, reaction time, and H 2 pressure were also studied. Overall, optimized reaction conditions were determined, and the Ni@C is easily reusable and exceptionally durable in the studied reaction cycles. The apparent activation energies for FA hydrogenation to THFOL and LA hydrogenation to GVL are 15.4 kJ/mol and 33.6 kJ/mol, respectively.
研究领域:
催化化学
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可再生资源与环境科学
✓ 已验证
产品关联
DOI
高影响因子
ChemistrySelect
·
2025
·Vol. 10
·期 4
·e202404857
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IF 2
Wei Jiang,Chenkang Zhao,Yanfeng Liu,Yu Zu,Hongyu Guo,Guanghui Zhao,Weizhong Wang,Yong Sun
Graphical In this study, a straightforward coprecipitation method was employed to synthesize the bimetallic catalyst MnO@Co-CN, which demonstrates high efficiency in catalyzing the direct oxidative esterification of HMF to produce FDMC with a yield reaching 90.3%. The synergistic interactions between the dual metals during the reaction significantly enhance the catalytic performance for optimal oxidative esterification. As a versatile platform molecule derived from biomass, 5-hydroxymethylfurfural (HMF) has the potential to be transformed into a variety of chemicals. Of these, furan-2,5-dimethylcarboxylate (FDMC) stands out as an excellent precursor for the synthesis of poly(ethylene furandicarboxylate) (PEF), a polymer with broad applications in the production of various polymeric materials. However, a majority of studies have focused on the use of noble metal catalysts to achieve the direct oxidative esterification of HMF for the production of FDMC. Given the scarcity and high cost of noble metal catalysts, there is a pressing need to develop non-noble metal catalysts to efficiently facilitate the direct oxidative esterification of HMF. Accordingly, a bimetallic catalyst, MnO@Co-CN, was prepared in this paper by a simple coprecipitation method, and a 90.3% FDMC yield was obtained under optimal conditions. The findings revealed that in the oxidative esterification of HMF, MnO x predominantly adsorbs the reactants onto the catalyst surface, whereas CoO x is primarily responsible for the oxidation. The synergistic interaction between Mn and Co enhances the catalytic performance, leading to the superior oxidative esterification outcomes. This work offers a cost-effective, scalable method for FDMC synthesis, highlighting potential for industrial applications.
研究领域:
化学工程
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催化材料
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可再生资源转化
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
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2025
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IF 5.3
Wuyu Wang,Xuelai Zhao,Yanyan Cui,Xinghua Zhang,Lungang Chen,Qi Zhang,Longlong Ma
Jet fuels must simultaneously meet stringent requirements for energy density and freezing point to ensure safe operation under extreme flight conditions. The common technical route of biojet fuel is hydrodeoxidation after the platform molecule C–C coupling. The branched long-chain alkanes synthesized from biomass-derived C5–C6 esters and ketones platform molecules can meet the performance requirements of jet fuel, via the Claisen condensation as the C–C coupling step. The acetone-derived methyl isobutyl ketone (MIBK) and methyl pivalate were efficiently converted to C11 fuel precursor with branched chain structure over potassium tert-butoxide (t-BuOK) in N,N-dimethylformamide solution. MIBK was fully converted at room temperature for 7 h, with a 95% yield of C11 oxygenated compounds. Under the same conditions, a series of C10–12 oxygenated compounds with a yield around 80% could be synthesized from methyl pivalate and other ketones. In addition, the oxygenated compounds generated alongside the Claisen condensation reaction could serve as jet fuel precursors, thereby ensuring high atomic economy of ketones. After hydrodeoxygenation, these oxygenated precursors are transformed into isomeric alkanes with freezing points below −100 °C, meeting and even surpassing aviation fuel standards. Importantly, the mild conditions, high selectivity, and compatibility with a wide range of ketone feedstocks indicate the route’s strong industrial application potential for large-scale production of ultralow freezing biojet fuel for extreme aviation environments.
研究领域:
生物能源化学
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绿色催化
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燃料化学
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应用化学
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可再生能源工程
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有机合成方法学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2019
·
IF 3.375
Xue Wang,Jing Zeng,Xingmei Lu,Jiayu Xin,Suojiang Zhang
Butene plays an essential role in the area of petrochemical industry. The production of butene from the biomass-derived platform molecule γ-valerolactone (GVL) is of great interest. GVL decarboxylation reaction occurred under high temperature because the catalytic activity of the catalysts used before was not efficient for this reaction. In this work, beta zeolite with Si:Al = 5 was synthesized and used for GVL decarboxylation. It exhibited a higher catalytic performance than other commercial zeolites due to a large number of Lewis acid sites and relatively large micropore size. At 300 °C, 99.5% GVL conversion and 98% butene yield were obtained after condition optimizing. For further research, the influence of the Brønsted/Lewis acid ratio was investigated, and it turned out that Lewis acid was more active than Brønsted acid in crystalline material on GVL decarboxylation for the first time.
研究领域:
石油化工
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催化
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绿色化学
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可再生能源
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）