CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Chenxi Zhang,Da Zhang,Kexin Zhou,Yuxuan Xia,Roufen Wu,Jieyuan Zheng,Wen-Jun Wang,Xuan Yang
Reactive lignin-containing CNFs (L-CNFs) unify droplet stabilization and interfacial covalent grafting, enabling the in-situ interfacial anchor-regulated hybrid polymerization. • The one-pot polymerization yields composite particles ready for thermal processing. • 3D-percolated L-CNF networks with chemical interfacial bonding yields L-CNF/PMMA nanocomposites with superior mechanical, optical and thermal properties. Developing strong, transparent, and sustainable biobased poly (methyl methacrylate) (PMMA) nanocomposites is of great significance in the field of high-performance engineering plastics. Here, we report a green and resource-efficient route to PMMA nanocomposites via an in-situ interfacial anchor-regulated hybrid polymerization that extends the role of nanocellulose beyond passive stabilization. Lignin-containing cellulose nanofibrils (L-CNFs), featuring moderate hydrophobicity (water contact angle = 80.6°), high aspect ratio (diameter ~ 1.8 nm, length ~ 1.8 μm), and reactive maleic anhydride groups, stabilize MMA droplets, confine phase separation, and participate in covalent interfacial grafting during polymerization. This droplet-confined hybrid mechanism produces uniformly dispersed PMMA nanoparticles (<300 nm) with high molecular weight (~8.8 × 10 5 Da) and moderate dispersity (PDI = 1.9), independent of initial droplet size. The resulting L-CNF/PMMA films combine high optical clarity (88% transmittance, 5% haze), enhanced stiffness and toughness (Young's modulus +0.8 GPa at 2 wt% L-CNF), and improved thermal stability, while avoiding additional surfactants, crosslinkers, or harsh chemical treatments, demonstrating a step- and resource-efficient, sustainable process. By coupling physical interfacial confinement with chemical anchoring, this work paves a new path to overcome the traditional compatibility barriers between hydrophilic biomass and hydrophobic polymers, offering an adaptable platform for creating transparent and mechanically robust thermoplastic composites. Download: Download high-res image (194KB) Download: Download full-size image
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高影响因子
BIOMASS & BIOENERGY
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2026
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IF 7
Jing Bai,Mengqi Wang,Yang Xiao,Xiangyu Cheng,Weiyu Chen,Haoran Wu,Chun Chang
A single-step removal of γ-carbinol from lignin β-O-4 linkages was reported. • Key parameters for γ-carbinol removal were systematically screened and optimized. • Ru/C system enabled efficient upgrading of monophenols from birch-derived bio-oil. • The selectivity and yield of 2,6-dimethoxy-4-ethylphenol reach 53.02% and 39.33%. • A promising route for lignin valorization was proposed. Development of efficient strategies for converting the C3 β-O-4 motif of lignin into a simplified C2 β-O-4 structure is of great significance, yet it remains a formidable challenge. Herein, we report the use of Ru/C as a catalyst to convert α-hydroxy-free C3 β-O-4 fragments into C2 β-O-4 fragments via a one-step strategy for the removal of the γ-carbinol group. A series of lignin-derived phenolic model compounds were selected to systematically investigate the effects of key reaction parameters, including temperature, reaction time, catalyst dosage, and substituent structure on the removal of the γ-carbinol group. On the basis of the obtained reaction rules and optimized parameters, the Ru/C-catalyzed system was successfully applied to the upgrading of monophenolic components in bio-oil obtained from the depolymerization of authentic birch lignin. Under optimized reaction conditions, 4-(3-hydroxypropyl)-2,6-dimethoxyphenol in the bio-oil achieved a conversion of 74.18%, affording the target product 2,6-dimethoxy-4-ethylphenol with a selectivity of 53.02% and a yield of 39.33%. This study provides a novel and efficient approach for the valorization of lignin-derived bio-oil, laying a solid foundation for the sustainable utilization of lignin resources. Download: Download high-res image (376KB) Download: Download full-size image
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高影响因子
CHEMICAL ENGINEERING SCIENCE
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2026
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IF 5.1
Meng Liu,Jianhao Qiu,Guanglu Xia,Yixin Li,Chen Chen,Jianfeng Yao
Photocatalytic depolymerization of lignin represents a sustainable route to value-added aromatic compounds; however, the selective cleavage of inherently stable C–C bonds remains a central challenge. Herein, we report the concerted engineering of electronic and textural properties in g-C 3 N 4 to achieve efficient photocatalytic cleavage of lignin C α –C β bonds. An oxygen-doped porous g-C 3 N 4 (O-PCN) catalyst was synthesized via one-step thermal co-condensation of nitric acid-treated melamine with ammonium chloride. Oxygen doping modulates the electronic band structure, enhancing the oxidative power of photogenerated holes. Concurrently, the gas templating effect from ammonium chloride decomposition creates a mesoporous architecture with a high specific surface area (131 m 2 g −1 ), which facilitates oxygen adsorption and provides abundant accessible active sites. This synergistic optimization leads to exceptional performance in the photocatalytic cleavage of the lignin model compound 2-phenoxy-1-phenylethanol. Under 405 nm light irradiation, the O-PCN catalyst achieves 96.9% substrate conversion with 92.9% benzaldehyde yield, significantly surpassing pristine g-C 3 N 4 (48.7%), oxygen-doped bulk (62.1%), and porous (71.0%) analogs. Mechanistic investigations reveal that photogenerated holes and 1 O 2 are the primary active species driving the selective bond cleavage. More encouragingly, for the depolymerization of organosolv lignin that possesses natural lignin structures, a 4 wt% yield of high-value vanillin could be obtained. This work demonstrates a dual-strategy design for simultaneously tailoring the photophysical and surface properties of photocatalysts, offering a promising avenue for solar-driven biomass valorization.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
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2026
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IF 5.1
Qida Peng,Huihui Su,Jiannan Qin,Hao Cheng,Mingfu Li,Pingjun Zhang,Liqun Jiang
2,5-Furandicarboxylic acid (FDCA) is a promising renewable alternative to petroleum-derived terephthalic acid for the production of bio-based polyesters. However, achieving efficient thermocatalytic oxidation of 5-hydroxymethylfurfural (HMF) to FDCA under mild conditions remains challenging. Herein, we report a lignin-derived nitrogen-doped carbon-supported Co–Mn dual single-atom catalyst (CoMn/LNC) prepared by a chelation-pyrolysis method, which achieves a 99.9% FDCA yield with a productivity of 1542.0 μmol FDCA ·g cat −1 ·h −1 at 65 °C using air as the oxidant. Physicochemical characterizations indicate that an asymmetric CoN 3 –MnN 3 electronic configuration in CoMn/LNC serves as the key catalytic center, which lowers the reaction activation energy and promotes the formation of FDCA under mild condition. Combined density functional theory calculations and in situ DRIFTS reveal that the asymmetric coordination modulates the d-band center, enhances interfacial electron transfer, and promotes HMF adsorption and subsequent oxidation. Furthermore, the asymmetric configuration facilitates oxygen activation and shifts the rate-determining step from the oxidation of HMFCA to FFCA toward FDCA desorption. This work provides a feasible strategy for designing transition metal dual single-atom catalysts for HMF oxidation to FDCA.
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产品关联
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Zifan Wu,Lu Chen,Yacong Deng,Fengyu Tian,Guangzheng Sun,Yuting Qiu,Yichuan Li,Yuan Pan,Bin Liu,Bin Dong,Yongming Chai
Lignin-derived phenols, with their high energy density and rich aromatic structure, are potentially high-quality feedstocks for the production of aviation fuel-range cycloalkanes. Herein, we fabricated a Ni Mo alloy catalyst anchored on graphitic carbon nitride (g-C 3 N 4 ) coated γ-Al 2 O 3 (10Ni-5Mo/CN@γ-Al 2 O 3 ), which could completely hydrodeoxygenate various lignin-derived phenols into cycloalkanes under mild conditions. 10Ni-5Mo/CN@γ-Al 2 O 3 significantly catalyzed the hydrodeoxygenation of lignin oil at 240 °C under 3 MPa H 2 for 8 h, achieving a deoxygenation degree of 96.5 % and a high propylcyclohexane selectivity (41.8 %), and the resulting products met the requirements for aviation fuels. The study results showed that electron transfer within Ni Mo alloys and the strong interaction between g-C 3 N 4 and surface anchored Ni Mo alloys in 10Ni-5Mo/CN@γ-Al 2 O 3 facilitated the dissociation of H 2 into active hydrogen to hydrogenate the aromatic rings. Meanwhile, the formation of oxygen vacancies enhanced the adsorption and activation ability of the catalyst for oxygen-containing substrates, which was beneficial for the demethoxylation and dehydroxylation reactions. This work provides a new strategy for constructing supported non-noble metal catalysts for the hydrodeoxygenation of lignin oil into aviation fuels.
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高影响因子
JOURNAL OF THE ENERGY INSTITUTE
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2025
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IF 6.2
Fang Xu,Rui Zhang,Mingjun Liu,Shuang Wu,Da Cui,Jingru Bai,Qing Wang
To address the growing challenges of energy crisis and white pollution, co-pyrolysis of lignin and plastics facilitates both biomass resource valorization and pollution mitigation. To gain deeper insight into the synergistic mechanism, this study combined experiments, kinetic analyses, and molecular simulations to systematically investigate the product distributions and bond-breaking behaviors during lignin/PE co-pyrolysis at multiple scales. The kinetic investigation demonstrated that lignin and PE interaction exhibited a positive synergistic effect, significantly lowering the activation energy. Moreover, adding PE promoted the formation of oxygen-free tar while suppressing oxygen-containing tar, consequently enhancing the fuel properties of pyrolysis tar. In parallel, ReaxFF-MD simulations provided molecular-level insights into the dynamic behaviors of chemical bonds during co-pyrolysis. The results demonstrated that lignin/PE co-pyrolysis facilitated C—C bonds breaking but inhibited C—O bonds cleavage, thereby significantly increasing the production of hydrocarbon gases. TG analysis indicated that the interaction between lignin and PE facilitated the release of volatile products. The simulations complemented experimental observations in the secondary reaction stage, demonstrating synergistic promotion of tar formation while inhibiting pyrolysis gas release. This work elucidated the synergistic mechanism of lignin/PE co-pyrolysis at multiple scales, providing theoretical support for the clean conversion and resource recovery of lignin and plastic waste.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
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IF 8.3
Jiacheng Zhang,Zixin Xie,Zhangyuan Chen,Xihong Zu,Jiayi Zheng,Wenli Zhang,Dongjie Yang,Xueqing Qiu
Biomass flow fuel cells (BFFCs) are effective energy conversion technologies for converting biomass into electricity to realize a sustainable society. However, most of them depend on the thermal degradation of biomass, which is energy consumption and induces biomass polycondensation. Herein, we develop a novel solar-driven BFFC for converting lignin into electricity under sunlight at room temperature based on FeCl 3 /TiO 2 synergetic mediators, which endow a broad photo-absorption range and enhance absorption intensity for high photocatalytic activity. A new electron transfer chain is constructed by employing Fe 3+ to obtain electrons and efficiently promote electron-hole separation of TiO 2 . Meantime, the generated ·OH can depolymerize lignin rapidly. The BFFC achieved a power density of 64.4 mW/cm 2 at room temperature via sunlight irradiation with sodium lignosulfonate as fuel when paired with VO 2 + /VO 2+ catholyte. It can stably discharge and power LED light successfully. This work provides a sustainable and energy conservation approach for developing advanced biomass fuel cells.
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产品关联
DOI
高影响因子
JOURNAL OF THE ENERGY INSTITUTE
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2026
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IF 6.5
Xiaoran Li,Kehui Cen,Jinjin Li,Li Qiu,Xiao Yang,Dengyu Chen
In this work, the co-pyrolysis of hemicellulose and lignin for production of biochar, bio-oil and gaseous products showed interactions between both the components. These interactions were identified by comparing the actual values of product yields with RSM-predicted values derived from individual component pyrolysis. The experiments were designed using response surface methodology (RSM), with co-pyrolysis factors that included temperature (400 – 800 °C), time (5 – 30 min), and hemicellulose percentage (0 – 100%). The results indicated that the co-pyrolysis interactions promoted biochar yield, driven primarily by temperature and residence time. For bio-oil yield, the interaction was temperature-dependent; high temperatures (700–800 °C) combined with optimized residence time enhanced yields. Similarly, the total gas yield was maximized at 600 °C through interaction regulation. In addition, the co-pyrolysis interactions increased the H 2 yield while decreasing the CH 4 yield and the HHV of the gas. RSM optimization identified the optimal conditions for maximizing biochar, bio-oil, CO + H 2 , and gas HHV, with predictions agreeing with experiments (<2% deviation), confirming the model's reliability. DFT calculations revealed the reaction pathways of 2-methoxy-4-methylphenol decomposition to gaseous products. The combination of RSM and DFT enabled the process design and precise mechanistic analysis of gas products from the co-pyrolysis of hemicellulose and lignin in an efficient manner.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 13.2
Liuzi Du,Xiaodong Zhai,Jianchun Wu,Xiaowei Huang,Xiaobo Zou,Zhihua Li
To address the challenge of short shelf life and microbial contamination in food preservation, this study aims to develop an intelligent pH-responsive antibacterial fiber film with controlled release capability. The modification of alkaline lignin improved the structural stability and specific surface area of HKUST-1 (from 547 to 1483 m 2 /g), while the composite film exhibited excellent mechanical properties (tensile strength: 3.74 MPa, elongation: 96.25%) and hydrophobicity (water contact angle: 120.55°). The film exhibited strong pH-dependent controlled release, with 81% of antibacterial agents released at pH 6.0 within 120 h. In vitro antibacterial tests demonstrated broad-spectrum activity against Escherichia coli ( E. coli ), Staphylococcus aureus ( S. aureus ), and Pseudomonas aeruginosa ( P. aeruginosa ). When applied to beef preservation, the film significantly reduced total volatile basic nitrogen (15.35 mg/100 g), total viable count (6.23 log CFU/g), and pH (6.02) after 9 days of storage, extending the shelf life by 4 days compared to the control. This work provides a feasible strategy for developing intelligent pH-controlled-release antibacterial packaging materials.
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
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2026
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IF 2.5
Chengcheng Liu,Lin Shao,Guo-Heng Wei,Yi-Fan Li,Pan Guo,Ligang Zhang,Cong Wang,Xiao-Yan Zhao,Dejin Zhang,Jing-Pei Cao
Lignin, due to its structural rigidity, tends to form coke deposits during catalytic hydrodeoxygenation (HDO), causing catalyst deactivation, and eliminating coke to restore performance is challenging. In this study, Co 3 O 4 shows excellent HDO performance toward lignin model dimers with high selectivity for demethoxylation and deethoxylation under mild conditions via a one-step strategy integrating in-situ reduction and HDO, and enables lignin HDO. At 240 o C, 2 MPa, and 20 h, lignin achieved a 73 % liquid yield, with 64%, 30%, and 6% selectivities to alkanes, alcohols, and phenols. This is attributed to Co 3 O 4 's high Co-O bond energy, dominant (220) crystal plane exposure, and high Co 3+ /Co 2+ ratio, facilitating in-situ reduction to metallic cobalt active sites. Coke on Co 3 O 4 can be removed by calcination to restore performance, with 90% of the initial liquid yield retained after five cycles. This low-cost commercial non-noble metal Co 3 O 4 enhances the economic feasibility of lignin's high-value utilization.IntroductionLignin, accounting for 15-30 wt% of lignocellulose, is the most abundant renewable aromatic resource on earth, holding immense potential to replace fossil feedstocks in producing high-value
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高影响因子
GREEN CHEMISTRY
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2026
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IF 10.6
Yuguo Dong,Puyan Bai,Hongyu Yang,Lin Dong,Xiaoli Gu,Changle Zhao,Zupeng Chen
Photocatalytic depolymerization of lignin into aromatic compounds is of great significance but extremely challenging, hindered by the stable interunit C-C bonds with high dissociation energies. Herein, we develop a novel oxidation acetalization strategy for the phtocatalytic cleavage of C-C bond in lignin model compounds while simultaneously reducing aldehyde condensation. Phosphorus-doped carbon nitride (Px-CN) was synthesized for the selective cleavage of Cα-Cβ bonds under visible light at room temperature. This approach achieves a nearly complete conversion (>99.9%) of 2-phenoxy-1phenylethanol, along with high yields of benzaldehyde dimethyl acetal (91.1%) and benzyl formate (56.3%). Mechanistic investigations reveal that the activation of the Cβ-H bond by photogenerated holes is crucial for the transformation to occur.Meanwhile, the introduction of phosphorus accelerates the separation efficiency of charge carriers, thereby enhancing the photocatalytic performance of the Px-CN. This work demonstrates the potential of phosphorus-doped carbon nitride for the high-selectivity photocatalytic cleavage of the C-C bond in lignin to aromatic chemicals.
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DOI
高影响因子
Catalysis Science & Technology
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2026
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IF 4
Yuzhen Hu,Ruiying Xiong,Xin Qu,Taras Nagornyy,Zhenlong Song,Xingye Zeng,Ning Li,Qi Zhang,Longlong Ma
Selective C-C bond cleavage in lignin is a pivotal step toward its efficient utilization, enabling the production of diverse and valuable chemicals from this abundant and renewable resource. Among the catalysts reported for oxidative cleavage of C-C bond in lignin β-O-4 ketones, CeO₂-supported Pd catalysts have demonstrated outstanding activity. However, the exact nature of the active Pd sites responsible for C-C bond cleavage remains poorly understood, limiting mechanistic insights into this transformation. In this study, CeO₂ supports with four distinct morphologies including rods (R), spheres (S), cubes (C), and polyhedrons (P) were synthesized to investigate their influence on the catalytic activity of Pd/CeO₂ catalysts in the oxidative cleavage of β-O-4 ketones. The catalytic performance was found to depend strongly on the morphology of CeO₂, with Pd/CeO₂-P exhibiting the highest activity for C-C bond cleavage. This catalyst possessed the lowest Pd⁴⁺ content and the highest Pd⁰/Pd²⁺ ratio among the series. By systematically tuning this ratio, a volcano-type relationship between Pd⁰/Pd²⁺ ratio and catalytic activity was established, indicating a dual-site mechanism in which Pd⁰ facilitates the formation of reactive oxygen species, while Pd²⁺ serves as the active center for C-C bond cleavage.
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DOI
高影响因子
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