CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Yang Yu,Xinlu Liu,Fei Huang,Qingyu Huang,Chuang Yang,Yongjun Zhang
3D-printed monolithic catalysts have garnered significant attention in wastewater treatment due to their structural flexibility and mass transfer control. However, catalyst stability remains a critical challenge for peroxymonosulfate (PMS) activation processes. In this study, a random forest model was employed to investigate the stability and optimize the selection of bimetallic (Fe and Ni) active components. FeNi 3 alloy was synthesized on 3D-printed monoliths by electrodeposition, achieving excellent stability. The 3DE-FeNi monolithic catalyst exhibited excellent performance, achieving a 98.6% conversion of OFX by PMS activation. Numerical simulations and experimental characterizations were used to explore the mass transfer mechanisms. This study provides an effective strategy for precisely manufacturing structured catalysts with high catalytic stability, which can be applied to a range of chemical reactions.
研究领域:
环境科学
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材料科学
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化学工程
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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
Daoming Chen,Han Xu,Lifeng Li,Tao Ruan,Xinping Ouyang,Xueqing Qiu
The hydrodemethoxylation (HDMO) of lignin-derived monophenolics to alkylphenols is a crucial step for the conversion of lignin bio-oil into chemicals. A new FeNi 3 alloy catalyst was firstly prepared by being reduced in-suit from Fe, Ni oxides precursor. The FeNi 3 /FeNi 8 O 9.25 catalyst prepared using optimal 12:88 of molar ratio of iron nitrate to nickel nitrate showed good catalytic activity and selectivity to HDMO of lignin-derived monophenolics. In the HDMO process of lignin-derived 4-propylguaiacol, FeNi 3 /FeNi 8 O 9.25 contributed to a 94.53 % of conversion and a 90.67 % of demethoxylation selectivity under 0.4 MPa H 2 at 280 °C for 2 h. Compared with the Ni/Ni 1 O catalyst, the FeNi 3 /FeNi 8 O 9.25 catalyst increased by 6.19 times and 2.35 times of the specific surface area and total acid amount, respectively. FeNi 3 (111) possessed lower adsorption energy to substrate and changed adsorption configuration of the benzene ring in tilted mode. Consequently, prepared catalyst facilitated the removal of methoxy group, as well as suppressing hydrogenation saturation of the benzene ring. Moreover, FeNi 3 /FeNi 8 O 9.25 catalyst exhibited versatile capacity of HDMO to different lignin-derived monophenolics and high stability. This work offers a new strategy for constructing non-noble metallic alloy catalyst for highly selective HDMO reactions.
研究领域:
催化化学
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生物质转化
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绿色化学
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能源化工
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有机反应工程
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产品关联
DOI
PubMed
高影响因子
Energy Materials
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2024
·Vol. 4
·期 1
·N
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IF 11.8
Teng Ke,Sining Yun,Kaijun Wang,Tian Xing,Jiaoe Dang,Yongwei Zhang,Menglong Sun,Jinhang An,Lijianan Liu,Jiayu Liu
Accelerants can enhance methane production in biomass energy systems. Single-component accelerants cannot satisfy the demands of anaerobic co-digestion (AcoD) to maximize overall performance. In this work, nitrogen-doped bio-based carbon derived from coconut shells, containing bimetallic Ni/Fe nanoparticles, FeNi3 alloys, and compounds (Fe2O3, FeN, and Fe3O4), was constructed as hybrid accelerants (Ni-N-C, Fe-N-C, and Fe/Ni-N-C) to boost CH4 production and CO2 reduction. The cumulative biogas yield (553.65, 509.65, and 587.76 mL/g volatile solids), methane content (63.58%, 57.90%, and 67.39%), and total chemical oxygen demand degradation rate (60.15%, 54.92%, and 65.38%) of AcoD with Ni-N-C (2.625 g/L), Fe-N-C (3.500 g/L), and Fe/Ni-N-C (2.625 g/L) were higher than control (346.32 mL/g volatile solids, 40.13%, and 32.03%), respectively. These digestates with Ni-N-C, Fe-N-C, and Fe/Ni-N-C showed excellent stability (mass loss: 22.97%-32.75%) and total nutrient content (4.43%-4.61%). Based on the synergistic effects of the different components of the hybrid accelerant, an understanding of the enhanced methanogenesis of AcoD was illustrated.
研究领域:
环境工程
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可再生能源
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生物能源
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废物资源化
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微生物代谢
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材料科学
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碳材料化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2023
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IF 6.2
Jiabo Wang,Jie Zhang,Peng Zhang,Yalin Fu,Zhentao Liu,Baolei Liu,Jibo Zhang,Li Chen
ABSTRACT The oxygen evolution reaction (OER) is a key half-reaction in renewable energy-related technologies, such as the electrocatalytic water splitting process and carbon dioxide reduction reaction. Unfortunately, developing an efficient and stable electrocatalyst to overcome the sluggish kinetics of OER remains a challenge. Herein, uniformly dispersed NiO and FeNi 3 alloy nanoparticles anchored on N-doped porous carbon (NC) electrocatalysts were designed and synthesized by a facile two-step calcination strategy. The influence of calcination temperature and the molar ratio of Ni:Fe on electrocatalytic OER activity was particularly studied. With an optimal calcination temperature and Ni/Fe ratio, FeNi 3 @NC-800 exhibited outstanding OER performance with a low overpotential of 242 mV at a current density of 10 mA cm −2 and a small Tafel slope of 34.7 mV dec −1 in alkaline media. The enhanced OER activity of FeNi 3 @NC-800 is mainly due to the synergistic effect of FeNi 3 alloy nanoparticles with NC and the high electrical conductivity between FeNi 3 and NC. This research will offer a new perspective on the construction of efficient and stable non-noble metal OER electrocatalyst.
研究领域:
电化学
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材料科学
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可再生能源
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催化
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2023
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IF 6.2
Wenji Ruan,Menglin Wu,Yuanhua Xia,Jiupai Ni,Chengsheng Ni
This study aimed at improving electrocatalytic activity of solid oxide electrolysis cell (SOEC) cathode via in-situ exsolved nanoparticles. La 0.67 Sr 0.33 Fe 0.67 Ti 0.33 O 3-δ (LSFT) and La 0.67 Sr 0.33 Fe 0.6 Ni 0.067 Ti 0.33 O 3-δ (LSFNT-67) cathodes with a La/Sr ratio about 2.0 showed the exsolution of Fe 0 and FeNi 3 alloy nanoparticles, respectively, under a reducing atmosphere. The SOEC with LSFT of electrocatalysis is better than LSFNT-67 at 800 °C for direct electrolysis of CO 2 , the current density of LSFT and LSFNT-67 reach − 0.54 A cm −2 and − 0.29 A cm −2 , respectively, and the Faradaic efficiency is close to unity during the 25 h′ durability under a − 1.3 V bias. The better cell performance for the cell with LSFT than LSFNT-67 could be related to the larger distortion and the less amount of insulating LaSrGa 3 O 7 in the former, causing its unexpectedly larger quantity of metal exsolution and electron conduction for more active reaction sites for CO 2 activation. This work demonstrated that apart from thermodynamic consideration, steric effect of the B site cation could be important for the exsolution of metal particles from a perovskite with high La/Sr ratio and the resultant electrocatalysis of CO 2 electrolysis.
研究领域:
材料科学
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电化学
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催化
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能量转换
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DOI
高影响因子
危险品化学品经营许可证（带存储）