Catalysis Letters最新文献

筛选
英文 中文
Lewis Acid Promoted Dioxygen Activation and Catalytic Oxygenations by Manganese(II) Complexes 路易斯酸促进锰(II)配合物的双氧活化和催化氧化
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2026-02-12 DOI: 10.1007/s10562-026-05315-6
Guangjian Liao, Zhichao Wang, Wenbo Lv, Zhuqi Chen, Zhenxing Wang, Guochuan Yin
{"title":"Lewis Acid Promoted Dioxygen Activation and Catalytic Oxygenations by Manganese(II) Complexes","authors":"Guangjian Liao,&nbsp;Zhichao Wang,&nbsp;Wenbo Lv,&nbsp;Zhuqi Chen,&nbsp;Zhenxing Wang,&nbsp;Guochuan Yin","doi":"10.1007/s10562-026-05315-6","DOIUrl":"10.1007/s10562-026-05315-6","url":null,"abstract":"<div><p>Dioxygen activation and catalysis around ambient temperature is a long-standing challenge in chemical industry. Inspired by the significant roles of hydrogen bond networks in dioxygen activation and catalysis by redox enzymes, here, we present a Lewis acid promoted dioxygen activation by manganese(II) complexes toward efficient organophosphine oxygenation (vs. enzymatic Brönsted acid (hydrogen bond)). The active species was assigned to the manganese(III) superoxo species, and its electrostatic interaction with Al<sup>3+</sup>, that is, LMn<sup>III</sup>-O<sub>2</sub><sup>−•</sup>···Al<sup>3+</sup>, sharply enhanced its electrophilicity for oxygenation.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"156 3","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147338900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tuning Ni-WOx@C Catalysts via Pyrolysis-Driven Structural Evolution for Conversion of Cellulose into Ethylene Glycol 通过热解驱动的结构演化调整Ni-WOx@C催化剂用于纤维素转化为乙二醇
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2026-02-12 DOI: 10.1007/s10562-026-05331-6
Haiyun Huang, Lungang Chen, Xinghua Zhang, Qi Zhang, Xiuzheng Zhuang, Longlong Ma
{"title":"Tuning Ni-WOx@C Catalysts via Pyrolysis-Driven Structural Evolution for Conversion of Cellulose into Ethylene Glycol","authors":"Haiyun Huang,&nbsp;Lungang Chen,&nbsp;Xinghua Zhang,&nbsp;Qi Zhang,&nbsp;Xiuzheng Zhuang,&nbsp;Longlong Ma","doi":"10.1007/s10562-026-05331-6","DOIUrl":"10.1007/s10562-026-05331-6","url":null,"abstract":"<div><p>Effective utilization of lignocellulosic biomass as value-added fuels and chemicals is of great significance for achieving the dual goals of sustainable biorefinery and carbon neutrality. Here, Ni-WOx@C catalysts were synthesized for efficiently catalytic conversion of cellulose into ethylene glycol (EG). The catalyst was prepared through a one-step pyrolysis method by using citric acid and SiO<sub>2</sub> as the carbon source and structural template, respectively. A series of controlled experiments demonstrated that the pyrolysis temperature and the particle size of the SiO<sub>2</sub> template significantly affected the physicochemical properties of the catalyst, including the surface morphology, active sites provided by the loaded metals, and the distribution of Lewis acid sites. The optimized catalysts of Ni-WOx@C<sub>600−2</sub>, which was prepared by the pyrolysis at 600 °C with a 2 μm SiO<sub>2</sub> template, delivered the best performance characterized by its high specific surface area (124.86 m<sup>2</sup>/g), well-defined pores, as well as the cooperation between metallic species and Lewis acid sites. Under the optimized reaction conditions (220 °C, 4 MPa H<sub>2</sub>, 3 h), this as-prepared catalyst achieved nearly complete cellulose conversion (&gt; 99%) and EG yield of 60.1%. Generally speaking, the design of Ni-WOx-based catalyst provides new insight for effective catalysis and has considerable application potential in cellulose conversion.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"156 3","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147338904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Interface Engineering of BiFeO3/ZnO p-n Heterojunctions for Enhanced Charge Separation in Photoelectrochemical Water Splitting 光电化学水分解中增强电荷分离的BiFeO3/ZnO p-n异质结界面工程
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2026-02-12 DOI: 10.1007/s10562-026-05324-5
Huanyu Shen, Xuemei Lu, Meng Cao, Feng Nan
{"title":"Interface Engineering of BiFeO3/ZnO p-n Heterojunctions for Enhanced Charge Separation in Photoelectrochemical Water Splitting","authors":"Huanyu Shen,&nbsp;Xuemei Lu,&nbsp;Meng Cao,&nbsp;Feng Nan","doi":"10.1007/s10562-026-05324-5","DOIUrl":"10.1007/s10562-026-05324-5","url":null,"abstract":"<div><p>Bismuth ferrite (BFO), a p-type semiconductor with notable visible-light absorption, is an attractive photocathode material for photoelectrochemical (PEC) systems. This study presents a facile route to construct BFO/ZnO heterojunctions on fluorine-doped tin oxide (FTO) substrates via sol-gel and scraping method. A comprehensive characterization of the samples, including surface morphology, crystal structure, and chemical states, confirmed the successful fabrication of the BFO/ZnO heterojunction. The pure BFO exhibits photocathode behavior, with a negative photocurrent of -7.0 µA/cm², consistent with its p-type semiconductor characteristic. All heterojunction samples exhibited enhanced PEC performance, as demonstrated by the higher photocurrent densities. A maximum photocurrent density of -24.6 µA/cm² was detected in the optimal BFO/ZnO heterojunction sample, which was 3.51 folds by that of the pure BFO. The enhancement of PEC properties can be attributed to the built-in electric field (<i>E</i><sub><i>bif</i></sub>) of the p-n junction, which can promote the separation and transfer efficiency of charge carriers, analyzed by the carrier dynamics and the well band alignment. This research offers a promising strategy for developing low-cost and efficient PEC conversion devices.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"156 3","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147338901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Steric and Electronic Tuning of Bis(imino)pyridine Cobalt Catalysts for High 1-Hexene Selectivity in Conversion-Controlled Propylene Oligomerization 转换控制丙烯低聚反应中高1-己烯选择性双(亚胺)吡啶钴催化剂的立体和电子调谐
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2026-02-12 DOI: 10.1007/s10562-026-05325-4
Jialei Gao, Zhi Luo, Zhong-Hua Gao, Huayi Li, Song Ye
{"title":"Steric and Electronic Tuning of Bis(imino)pyridine Cobalt Catalysts for High 1-Hexene Selectivity in Conversion-Controlled Propylene Oligomerization","authors":"Jialei Gao,&nbsp;Zhi Luo,&nbsp;Zhong-Hua Gao,&nbsp;Huayi Li,&nbsp;Song Ye","doi":"10.1007/s10562-026-05325-4","DOIUrl":"10.1007/s10562-026-05325-4","url":null,"abstract":"<div><p>This study establishes molecular design principles for bis(imino)pyridine cobalt catalysts to simultaneously enhance activity and 1-hexene selectivity in propylene oligomerization. Systematic substituent engineering revealed: (1) <i>para</i>-Halogenation (e.g., Br in <b>4d</b>) boosts activity to high levels (4.68 × 10⁵ g/(mol<sub>(Co)</sub>·h)) through electronic effects; (2) <i>ortho</i>-Steric modulation follows a volcano-shaped selectivity trend, with isopropyl groups optimizing 1-hexene formation; (3) Conversion control is critical for suppressing secondary reactions that compromise selectivity. Implementing these insights, catalyst <b>4L</b> achieves 56.1% 1-hexene selectivity at low conversions (10.4%). These findings provide a blueprint for developing high-performance cobalt oligomerization catalysts through integrated electronic, steric, and process optimization.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"156 3","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147338613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergistic Effects of Tungsten and Sulfate Species on the Structural Evolution and Acidity of Titania for High-Efficiency Transesterification 钨和硫酸盐对高效酯交换二氧化钛结构演化和酸度的协同作用
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2026-02-12 DOI: 10.1007/s10562-026-05317-4
Khyrullah Khan, Wei Wang, Zhidong Chang, Bin Dong
{"title":"Synergistic Effects of Tungsten and Sulfate Species on the Structural Evolution and Acidity of Titania for High-Efficiency Transesterification","authors":"Khyrullah Khan,&nbsp;Wei Wang,&nbsp;Zhidong Chang,&nbsp;Bin Dong","doi":"10.1007/s10562-026-05317-4","DOIUrl":"10.1007/s10562-026-05317-4","url":null,"abstract":"<div><p>The innovation for highly effective solid acid catalysts that resist impurities is crucial for enhancing sustainable esterification and transesterification processes, which are vital for biofuel production and green chemistry. In this work, tungsten-modified sulfated titania (WO₃/SO₄<sup>2</sup>⁻/TiO₂) catalyst was prepared through the impregnation method and subsequently calcined at 550 °C to assess the impact of tungsten impurity on its structural and catalytic properties. The catalyst was characterized through FT-IR, XRD, NH<sub>3</sub>-TPD, and BET surface area analysis. These analyses revealed that the presence of sulfate and tungsten species inhibited TiO₂ crystallization, improving the textural properties and increasing surface acidity. The 5 wt.% WO₃/SO₄<sup>2</sup>⁻/TiO₂ catalyst demonstrated the largest surface area (35.99 m<sup>2</sup>/g) and total acidity (1.20 mmol NH₃/g). This catalyst achieved 86.4% conversion in the reaction of transesterification of ethyl acetate and n-butanol at 100 °C for 3 h. The enhanced catalytic performance and selectivity were attributed to the synergistic interaction between WO₃ and SO₄<sup>2</sup>⁻, resulting in the formation of Lewis-Bronsted acid sites. This study provides important insights into how tungsten affects the structure and acidity of sulfated titania, which could guide the design of more efficient, impurity-tolerant solid acid catalysts for environmentally sustainable chemical processes.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"156 3","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147338581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Seed-Assisted Hierarchical H-ZSM-5: Overcoming Diffusion Barriers for Efficient Recyclable Oleic Acid Isomerization to Commercial Isostearic Acid 种子辅助分级H-ZSM-5:克服扩散障碍,有效的可回收油酸异构化为商业异硬脂酸
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2026-02-12 DOI: 10.1007/s10562-026-05321-8
Xincheng Li, Pengpeng Huang, Mingming Fan, Pingbo Zhang
{"title":"Seed-Assisted Hierarchical H-ZSM-5: Overcoming Diffusion Barriers for Efficient Recyclable Oleic Acid Isomerization to Commercial Isostearic Acid","authors":"Xincheng Li,&nbsp;Pengpeng Huang,&nbsp;Mingming Fan,&nbsp;Pingbo Zhang","doi":"10.1007/s10562-026-05321-8","DOIUrl":"10.1007/s10562-026-05321-8","url":null,"abstract":"<div><p>Isostearic acid, a bio-based and environmentally friendly chemical, has attracted considerable attention because of its high value as an oleic acid derivative. The synthesis of isostearic acid via oleic acid isomerization over commercial H-ZSM-5 zeolites is limited by low yield and acid value, mainly due to diffusion constraints. To address this issue, a hierarchical-pore H-ZSM-5 zeolite (Meso-5) was synthesized using Silicalite-1(S-1) as a seed crystal to enhance diffusion and catalytic performance. The catalyst was comprehensively characterized by XRD, SEM, BET, TGA, FT-IR, and Py-FTIR. Meso-5 efficiently catalyzed the isomerization of oleic acid, attributed to its abundant Brønsted and Lewis acid sites whose synergistic interaction significantly promoted the formation of branched-chain products. The catalyst delivered a selectivity of 87.3% with a 71.1% yield in the first run, and even after five reuse cycles it maintained 82.1% selectivity with a 55.6% yield. Evidently, the hierarchical pore structure of the catalyst significantly facilitated the diffusion of oleic acid molecules and their isomerized intermediates, thereby enhancing the overall catalytic activity. The resulting isostearic acid was purified via a simple recrystallization procedure to a purity of 83.4% and an acid value of 186.7 mg KOH/g, both meeting the standards of commercial isostearic acid. These findings provide a robust basis for further catalyst optimization and scale-up toward industrial isostearic acid production.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div><p>A tandem catalytic route combining ZSM-5-driven isomerization with Ni/C-catalyzed hydrogenation enabled the efficient conversion of oleic acid to isostearic acid. The hierarchical H-ZSM-5 structure enhanced branched-chain formation, ensuring high selectivity and yield toward the desired product</p></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"156 3","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147338905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergistic Effect of Sodium and Potassium Co-promotion on Fe–Zn Catalysts for CO2 Hydrogenation into Light Olefins 钠钾共促进Fe-Zn催化剂对CO2加氢制轻烯烃的协同作用
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2026-02-09 DOI: 10.1007/s10562-026-05327-2
Istadi Istadi, Fadlillah Fani, Teguh Riyanto, Bunjerd Jongsomjit, Didi Dwi Anggoro, Ari Bawono Putranto
{"title":"Synergistic Effect of Sodium and Potassium Co-promotion on Fe–Zn Catalysts for CO2 Hydrogenation into Light Olefins","authors":"Istadi Istadi,&nbsp;Fadlillah Fani,&nbsp;Teguh Riyanto,&nbsp;Bunjerd Jongsomjit,&nbsp;Didi Dwi Anggoro,&nbsp;Ari Bawono Putranto","doi":"10.1007/s10562-026-05327-2","DOIUrl":"10.1007/s10562-026-05327-2","url":null,"abstract":"<div><p>The catalytic hydrogenation of CO<sub>2</sub> to light olefins remains limited by poor olefin selectivity and excessive methane formation. Here, we investigate the effect of dual alkali promotion on tuning the redox and electronic properties of Fe–Zn catalysts under mild reaction conditions. A series of Fe–Zn catalysts with controlled sodium to potassium ratios were prepared, and structural characterization confirmed that the ZnFe<sub>2</sub>O<sub>4</sub> spinel phase was preserved across all samples. Notably, X-ray photoelectron spectroscopy indicates that co-promotion with sodium and potassium modifies the surface Fe<sup>3</sup>⁺/Fe<sup>2</sup>⁺ ratio beyond the trend observed in single-alkali systems, suggesting a cooperative electronic modulation. This cooperative effect is associated with enhanced CO<sub>2</sub> conversion pathways and suppressed deep hydrogenation. As a result, the balanced Na–K/Fe–Zn catalyst achieved the highest C<sub>2</sub>–C<sub>4</sub> olefin selectivity (33.36%) while maintaining low methane formation (12.25%), among the investigated catalysts. A preliminary tandem coupling with HZSM-5 further illustrates the potential for downstream upgrading of in situ olefins into aromatics. Overall, these results highlight the potential of combined sodium and potassium promotion as an effective approach for enhancing light olefin production from CO<sub>2</sub> over Fe–Zn catalysts.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"156 3","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147337729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
W-Modified NiSe2-Based Electrocatalysts for Efficient Hydrogen Evolution Reaction w改性nise2基高效析氢电催化剂
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2026-02-09 DOI: 10.1007/s10562-026-05311-w
Yanan Hu, Dawei Yang, Qiaoling Li, Chengcheng Yu
{"title":"W-Modified NiSe2-Based Electrocatalysts for Efficient Hydrogen Evolution Reaction","authors":"Yanan Hu,&nbsp;Dawei Yang,&nbsp;Qiaoling Li,&nbsp;Chengcheng Yu","doi":"10.1007/s10562-026-05311-w","DOIUrl":"10.1007/s10562-026-05311-w","url":null,"abstract":"<div><p>The insufficient catalytic efficiency of non-noble metal materials in the alkaline hydrogen evolution reaction (HER) remains a critical challenge limiting their practical application. Herein, a W-modified NiSe<sub>2</sub>-based catalyst (Ni-W-Se/NF) was in situ fabricated on nickel foam through a simple potentiostatic electrodeposition strategy. The incorporation of W effectively modulates the microstructure of NiSe<sub>2</sub>-based catalysts, resulting in a significantly enlarged electrochemical active surface area for Ni-W-Se/NF. Benefiting from the synergistic effects of W-induced electronic modulation and morphology optimization, the Ni–W–Se/NF electrode exhibits enhanced HER performance in 1 M KOH, delivering a low overpotential of 64 mV at − 10 mA cm<sup>−2</sup>. Moreover, the catalyst demonstrates good electrochemical durability, maintaining stable activity during continuous operation for 50 h. Overall, these findings highlight the potential of this catalyst as an economically viable cathode for alkaline water electrolysis.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"156 3","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147337914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research on the High-Efficiency Catalytic Removal Reaction Model of N2O in Ammonia Engine Exhaust Gas 氨发动机尾气中N2O高效催化脱除反应模型研究
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2026-02-09 DOI: 10.1007/s10562-026-05318-3
Bin Guan, Zhongqi Zhuang, Lei Zhu, Luoxin Xu, Shiying Chang, Jiangli Ma, Rong Wang, Dongxia Yang, Tiankui Zhu, Hanshi Qu, Bingqian Tan, Zhen Huang
{"title":"Research on the High-Efficiency Catalytic Removal Reaction Model of N2O in Ammonia Engine Exhaust Gas","authors":"Bin Guan,&nbsp;Zhongqi Zhuang,&nbsp;Lei Zhu,&nbsp;Luoxin Xu,&nbsp;Shiying Chang,&nbsp;Jiangli Ma,&nbsp;Rong Wang,&nbsp;Dongxia Yang,&nbsp;Tiankui Zhu,&nbsp;Hanshi Qu,&nbsp;Bingqian Tan,&nbsp;Zhen Huang","doi":"10.1007/s10562-026-05318-3","DOIUrl":"10.1007/s10562-026-05318-3","url":null,"abstract":"<div><p>The growing use of ammonia-fueled engines has made removing nitrous oxide (N<sub>2</sub>O) from their exhaust a key research focus, as N<sub>2</sub>O, a potent greenhouse gas, undermines ammonia’s zero-carbon benefits. This study examines the development and results of a catalytic reaction model for N<sub>2</sub>O removal, focusing on iron-based catalysts, which show strong activity and stability. Among iron-based catalysts, carriers primarily include Beta and ZSM-5 molecular sieves. Through comparing catalytic efficiencies in standard SCR reactions, Fe/ZSM-5 is selected as the preferred catalyst. Using Chemkin software, a selective catalytic reduction (SCR) reaction kinetics model is built to analyze system chemistry, aiming to widen the active temperature window (200–800℃) and optimize N<sub>2</sub>O conversion for this catalyst. The model integrates NH<sub>3</sub> adsorption/desorption, NH<sub>3</sub> conversion, N<sub>2</sub>O reduction, nitrate decomposition, synergistic NH<sub>3</sub>–N<sub>2</sub>O reactions (standard, fast, side reactions), and by-product NO<sub><i>x</i></sub> dynamics, with real-time N<sub>2</sub>O emission monitoring. It investigates how factors influence outcomes. Post-processing combines 1D reaction mechanisms and 3D simulations to map velocity, temperature, pressure, and concentration fields. Comparisons between Fe/ZSM-5 experiments and simulations reveal high consistency, with errors within expected ranges under identical conditions. The model’s predictions provide critical data and reliability analysis for designing and optimizing catalytic reaction systems.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div><div><p>Simulation and calculation of efficient catalytic removal of nitrogen dioxide from the exhaust gas of ammonia engines</p></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"156 3","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147337715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of Soybean Peroxidase Catalyzed Degradation of 4-[2-(4-hydroxyphenyl) propan-2-yl] Phenol and its Toxicological Assessment 大豆过氧化物酶催化降解4-[2-(4-羟基苯基)丙基-2-基]苯酚的研究及其毒理学评价
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2026-02-09 DOI: 10.1007/s10562-026-05314-7
Sumble Malik, Shagufta Kamal
{"title":"Study of Soybean Peroxidase Catalyzed Degradation of 4-[2-(4-hydroxyphenyl) propan-2-yl] Phenol and its Toxicological Assessment","authors":"Sumble Malik,&nbsp;Shagufta Kamal","doi":"10.1007/s10562-026-05314-7","DOIUrl":"10.1007/s10562-026-05314-7","url":null,"abstract":"<div><p>Bisphenol A (BPA; 4-[2-(4-hydroxyphenyl) propan-2-yl], being an important industrial raw material, is a prevailing endocrine disruptor presenting a serious risk to human health and aquatic life. Classical Treatment methods are often inefficient or difficult to implement due to their persistent nature. Soybean peroxidase, being an iron-porphyrin-based metalloprotein, provides an efficient and eco-friendly alternative for degrading BPA. The present study involves purified soybean peroxidase (SBP) as a green catalyst to remove BPA from wastewater using response surface methodology (RSM) with six variables at five levels. The optimum conditions, which included 20 U/mL SBP, 30 mg/L H<sub>2</sub>O<sub>2</sub>, a 150-minute reaction time, 40 °C, and a pH of 7.0, resulted in 100% BPA mineralization, as confirmed by UV-Vis, HPLC, and LC-MS/MS. Kinetic analysis <span>(:{V}_{max})</span>= 28.6 µM/min and <span>(:{K}_{m})</span> = 13.01µM indicated high catalytic power and strong substrate affinity. The cytotoxicity study demonstrated a reduction in red blood cell (RBC) lysis from 47% to 3% of SBP-treated water. The phytotoxicity analysis revealed 0% (untreated wastewater) versus 100% (SBP-treated water) germination of wheat. This study established SBP as a cost-effective, sustainable, and eco-friendly biocatalyst for advanced and efficient treatment of micropollutants and endocrine-disrupting chemicals (EDCs) such as BPA.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"156 3","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147337927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信
小红书