Applied Catalysis A: General最新文献

Promotional effect of CeO2 and Fe2O3 species on mesoporous silica as efficient catalysts for the vapor-phase dehydration of iso-butyl alcohol to isobutylene CeO2和Fe2O3对介孔二氧化硅气相脱水异丁醇制异丁烯的促进作用

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-05-17 DOI: 10.1016/j.apcata.2025.120352

Walaa A. Elhamdy , Abd El-Aziz A. Said , Mohamed N. Goda , Kamal M.S. Khalil

{"title":"Promotional effect of CeO2 and Fe2O3 species on mesoporous silica as efficient catalysts for the vapor-phase dehydration of iso-butyl alcohol to isobutylene","authors":"Walaa A. Elhamdy , Abd El-Aziz A. Said , Mohamed N. Goda , Kamal M.S. Khalil","doi":"10.1016/j.apcata.2025.120352","DOIUrl":"10.1016/j.apcata.2025.120352","url":null,"abstract":"<div><div>CeO₂–Fe₂O₃ binary oxides were effectively incorporated into mesoporous spherical silica (MCM-41) via a sol–gel technique. The resultant CFO/MCM-41 nanocomposites, with metal loadings ranging from 3 to 30 wt%, were subsequently calcined at 550 °C and assessed as catalysts for the gas-phase dehydration of isobutyl alcohol. Structural and surface analyses using XRD, TG-DTA, ATR-FTIR, BET, TEM, EDX, XPS, and pyridine-adsorbed FTIR confirmed the formation of thermally stable, well-dispersed active phases, as well as the presence of both Lewis and Brønsted acid sites. The differences in catalytic activity among these nanocomposites were closely linked to variations in their acidity. Among all the catalysts, the 10 wt% CeFeO₃/MCM-41 sample demonstrated the best performance at 350 °C, achieving approximately 92 % isobutanol conversion, 100 % selectivity toward isobutylene, and a butene production rate of 45.10 mmol g⁻¹ h⁻¹ . The catalyst also showed excellent stability across five reuse cycles. The outstanding catalytic performance and stability were directly correlated with the material's enhanced structural integrity and optimized textural properties. Furthermore, XPS analysis revealed that the Ce<sup>3 +</sup>/Ce<sup>4+</sup> and Fe<sup>2+</sup>/Fe<sup>3+</sup> redox states, modulated by Ce–Fe interactions, played a crucial role in tuning the catalyst’s acidity and catalytic performance.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"702 ","pages":"Article 120352"},"PeriodicalIF":4.7,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Engineering hybrid plasmonic nanomaterials for solar energy conversion: Insight into the structure-function relations 用于太阳能转换的工程杂化等离子体纳米材料：结构-功能关系的洞察

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-05-15 DOI: 10.1016/j.apcata.2025.120351

Fengxia Tong , Leitao Zhu , Xiaolei Bao , Xizhuang Liang , Zhaoke Zheng

{"title":"Engineering hybrid plasmonic nanomaterials for solar energy conversion: Insight into the structure-function relations","authors":"Fengxia Tong , Leitao Zhu , Xiaolei Bao , Xizhuang Liang , Zhaoke Zheng","doi":"10.1016/j.apcata.2025.120351","DOIUrl":"10.1016/j.apcata.2025.120351","url":null,"abstract":"<div><div>Plasmonic nanomaterials, endowed with the unique surface plasmon resonance (SPR) effect, offer a promising route to convert low-intensity solar energy into chemical energy with a higher efficiency. However, the significant mismatch in timescales between rapid SPR relaxation (∼100 picoseconds) and slow chemical reaction kinetics (milliseconds or seconds) poses a major obstacle to their widespread application. To overcome these challenges, it is crucial to design multicomponent plasmonic nanostructures and establish efficient charge carrier channels. This review focuses on the effect of unique structures of plasmonic nanomaterials with precise geometries on catalytic performance. The key design strategies for hybrid plasmonic nanostructures and the deep physical and chemical mechanism have been summarized to effectively promote charge carrier excitation and migration. These strategies involve the shape, size and electronic structures tailoring of plasmonic components, an atomistic control over their coupling with other plasmonic components, doped semiconductors or non-plasmonic components, single-atom doping, crystal phase engineering as well as external field coupling. Finally, we discuss the future challenges and prospects in this field. This review aims to offer valuable insights in the design of plasmonic photocatalytic materials, ultimately accelerating the development of high-performance plasmonic photocatalysts.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"702 ","pages":"Article 120351"},"PeriodicalIF":4.7,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Catalytic acetalization of glycerol to solketal using mesoporous silica, Cu-FSM-16 介孔二氧化硅Cu-FSM-16催化甘油缩醛制溶胶

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-05-13 DOI: 10.1016/j.apcata.2025.120350

Rupak Kumar Singh, Vijayalakshmi Gosu

引用次数: 0

FeOx clusters confined in ZSM-5 as a high-performance catalyst for Fischer-Tropsch synthesis of lower hydrocarbons 限定在ZSM-5中的FeOx簇作为费托合成低碳氢化合物的高性能催化剂

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-05-13 DOI: 10.1016/j.apcata.2025.120335

Qichao Lu, Jie Li, Chen Liang, Lei Liu, Jinxiang Dong

{"title":"FeOx clusters confined in ZSM-5 as a high-performance catalyst for Fischer-Tropsch synthesis of lower hydrocarbons","authors":"Qichao Lu, Jie Li, Chen Liang, Lei Liu, Jinxiang Dong","doi":"10.1016/j.apcata.2025.120335","DOIUrl":"10.1016/j.apcata.2025.120335","url":null,"abstract":"<div><div>Under the dual pressures of oil depletion and low-carbon transition, Fischer-Tropsch synthesis (FTS) technology offers a viable option for producing high value-added lower (C<sub>2</sub>-C<sub>4</sub>) hydrocarbons from non-oil sources. However, conventional Fe-based catalysts often suffer from deactivation due to carbon deposition and sintering. Here, we report a unique Fe-ZSM-5 catalyst synthesized by doping Fe into ZSM-5, which demonstrates excellent FTS catalytic performance. During high-temperature template removal, Fe species migrated from the zeolite framework to form highly dispersed FeO<sub>x</sub> clusters (∼2 nm). Upon treatment by syngas, these FeO<sub>x</sub> clusters aggregate to form uniformly small-sized Fe<sub>5</sub>C<sub>2</sub>@C core-shell particles distributed on ZSM-5 support. The confinement effect of the inter-crystalline structure effectively prevents the sintering of Fe<sub>5</sub>C<sub>2</sub>. The smaller Fe<sub>5</sub>C<sub>2</sub> particles exhibit controlled CO dissociation, reducing the concentration of activated carbon species (C*), and the carbon shells (∼6.5 nm) limit the departure of C*, effectively suppressing carbon deposition. This unique structure enables stable catalytic activity for over 100 hours with maintained product selectivity. The Fe-ZSM-5 catalyst achieved a C<sub>2</sub>-C<sub>4</sub> hydrocarbons selectivity of 54.52 %, nearing the 56 % theoretical limit of the Anderson-Schulz-Flory (ASF) distribution. Additionally, the hydrophobic carbon shell prevents excessive oxidation of Fe<sub>5</sub>C<sub>2</sub>, reducing CO<sub>2</sub> selectivity by ∼56 % compared to conventional Fe/ZSM-5 catalysts, significantly enhancing atomic utilization efficiency and aligning with the principles of green development.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"702 ","pages":"Article 120335"},"PeriodicalIF":4.7,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Support effect on the chemical properties of Mn2O3/Na2WO4/MOx catalysts in the oxidative coupling of methane 载体对甲烷氧化偶联Mn2O3/Na2WO4/MOx催化剂化学性质的影响

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-05-12 DOI: 10.1016/j.apcata.2025.120339

Jiaxin Song , Xiaoqiang Fan , Baijun Liu , Zhen Zhao

引用次数: 0

Size effect of Rh/γ-Al2O3 catalyst in selective hydrogenation of dimethyl toluene-2,4-dicarbamate Rh/γ-Al2O3催化剂在二甲基甲苯-2,4-二氨基甲酸酯选择性加氢反应中的尺寸效应

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-05-12 DOI: 10.1016/j.apcata.2025.120336

Xuying Bian, Hualiang An, Xinqiang Zhao, Yanji Wang

{"title":"Size effect of Rh/γ-Al2O3 catalyst in selective hydrogenation of dimethyl toluene-2,4-dicarbamate","authors":"Xuying Bian, Hualiang An, Xinqiang Zhao, Yanji Wang","doi":"10.1016/j.apcata.2025.120336","DOIUrl":"10.1016/j.apcata.2025.120336","url":null,"abstract":"<div><div>The selective hydrogenation of dimethyl toluene-2,4-dicarbamate (TDC) to methyl cyclohexyl-2,4-dicarbamate (HTDC) is an important process for non-phosgene synthesis of methylcyclohexane-2,4-diisocyanate (HTDI). We prepared Rh/γ-Al<sub>2</sub>O<sub>3</sub> catalysts with an Rh particle size of 1.8–6.7 nm and studied size effect on TDC selective hydrogenation. The results showed that the catalytic activities of Rh/γ-Al<sub>2</sub>O<sub>3</sub> increase monotonously with increasing Rh particle size. This demonstrated that Rh/γ-Al<sub>2</sub>O<sub>3</sub> catalyst dedicates a negative size effect or an antipathetic structure sensitivity. Based on the characterization, we found that the geometric property of Rh is the main factor affecting the activity of catalyst. Combined with the proposed Rh particle model, it was inferred that the Rh (111) plays a major role in the TDC selective hydrogenation and the terrace sites are beneficial to promote the adsorption of TDC. The study on size effect can provide a guidance for the design and preparation of highly efficient Rh-based catalysts for TDC selective hydrogenation.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"702 ","pages":"Article 120336"},"PeriodicalIF":4.7,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143942614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

A 3D fishbone-like fluorinated BiVO4 as a reducing end to enhance photocatalytic activity 三维鱼骨状氟化BiVO4作为还原端，增强光催化活性

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-05-12 DOI: 10.1016/j.apcata.2025.120337

Zihan Yang, Yuqing Liu, Yida Wang, Xiaotong Sun, Yanzhi Zheng, Wanning Cao, Lixia Li, Liqin Wang, Hongli Zhao, Jingkai Yang

{"title":"A 3D fishbone-like fluorinated BiVO4 as a reducing end to enhance photocatalytic activity","authors":"Zihan Yang, Yuqing Liu, Yida Wang, Xiaotong Sun, Yanzhi Zheng, Wanning Cao, Lixia Li, Liqin Wang, Hongli Zhao, Jingkai Yang","doi":"10.1016/j.apcata.2025.120337","DOIUrl":"10.1016/j.apcata.2025.120337","url":null,"abstract":"<div><div>Photo-induced conversion of reactive oxygen species (ROS) has emerged as an effective means of removing persistent organic pollutants (POPs), but its key step of directed electron transfer from the active site to the stable O<sub>2</sub> molecule still possesses considerable challenges. In this work, we synthesized a novel 3D fishbone-like fluorinated BiVO<sub>4</sub> photocatalyst and explored the photocatalytic removal of dye-like species. The optimally fluorinated BiVO<sub>4</sub> with narrower band gap has an effective detoxification effect on MB and shows a degradation performance of 1.8 times higher than that of the original. Fluoride ions doped in the lattice and adsorbed on the surface lead to a slight increase of the electron density of BiVO<sub>4</sub> to elevate the conduction band potential and accelerate free radical activation. In addition, the degradation process of MB dye by F-BiVO<sub>4</sub> has been proposed. F-BiVO<sub>4</sub> material is proved as a promising reducing end of the F-BiVO<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> heterojunction system.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"702 ","pages":"Article 120337"},"PeriodicalIF":4.7,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Dehydrogenation of ethanol to acetaldehyde catalyzed by Cu nanoparticles supported on nanorod-shaped La2O2CO3 La2O2CO3纳米棒负载Cu纳米颗粒催化乙醇脱氢制乙醛

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-05-09 DOI: 10.1016/j.apcata.2025.120334

Chao Tian , Yinghong Yue , Changxi Miao , Weiming Hua , Zi Gao

{"title":"Dehydrogenation of ethanol to acetaldehyde catalyzed by Cu nanoparticles supported on nanorod-shaped La2O2CO3","authors":"Chao Tian , Yinghong Yue , Changxi Miao , Weiming Hua , Zi Gao","doi":"10.1016/j.apcata.2025.120334","DOIUrl":"10.1016/j.apcata.2025.120334","url":null,"abstract":"<div><div>Controllably tuning the morphology of catalysts is an effective solution to enhance the catalytic performance. Herein, we have reported how the shape effect significantly improves the performance of La<sub>2</sub>O<sub>2</sub>CO<sub>3</sub>-supported Cu catalysts in ethanol dehydrogenation to acetaldehyde. Compared with La<sub>2</sub>O<sub>2</sub>CO<sub>3</sub> nanoparticles-supported Cu catalyst, La<sub>2</sub>O<sub>2</sub>CO<sub>3</sub> nanorods-supported Cu catalyst (Cu/La<sub>2</sub>O<sub>2</sub>CO<sub>3</sub>-R) considerably improves the activity and stability. The superior performance of Cu/La<sub>2</sub>O<sub>2</sub>CO<sub>3</sub>-R is attributed to its more medium basic sites and stronger interaction between Cu species and {110} surfaces of La<sub>2</sub>O<sub>2</sub>CO<sub>3</sub> nanorods. Furthermore, DRIFT studies reveal that the support and Cu species perform a synergetic mechanism, with medium basic sites involving into dissociative activation of ethanol and Cu species serving as C−H cleavage of ethoxy intermediate and H<sub>2</sub> liberation sites. The synergetic basic sites with medium strength present on the La<sub>2</sub>O<sub>2</sub>CO<sub>3</sub> support is helpful for enhancing the intrinsic activity of supported Cu catalyst.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"702 ","pages":"Article 120334"},"PeriodicalIF":4.7,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Effect of potassium on the reaction stability of CoCu catalysts for higher alcohol synthesis from syngas 钾对合成气合成高醇CoCu催化剂反应稳定性的影响

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-05-08 DOI: 10.1016/j.apcata.2025.120333

Chun Han , Le Li , Xing Tian , Zeyu Peng , Luyao Wu , Enjuan Ma , Qian Zhang , Wei Huang

{"title":"Effect of potassium on the reaction stability of CoCu catalysts for higher alcohol synthesis from syngas","authors":"Chun Han , Le Li , Xing Tian , Zeyu Peng , Luyao Wu , Enjuan Ma , Qian Zhang , Wei Huang","doi":"10.1016/j.apcata.2025.120333","DOIUrl":"10.1016/j.apcata.2025.120333","url":null,"abstract":"<div><div>Developing the stable CoCu catalysts for higher alcohol (HA) synthesis is hindered by the dynamic evolution of complex active sites. Herein, a potassium (K)-modified strategy was proposed to address these issues. The regulating effect of K on Co and Cu sites was comprehensively explored. K doping not only enhanced the metal dispersion, but also regulated the Co<sup>0</sup>/Co<sup>δ⁺</sup> ratio and provided the hydroxyl groups (OH*). The enhanced metal dispersion was ascribed to the improved electrical conductivity, strengthening the synergistic effect. The Co<sup>0</sup> proportion of Cu-rich catalysts increased, while it decreased over Co-rich catalysts. The K-induced OH* enhanced CO adsorption ability of Cu species, improving HA selectivity and restraining the aggregation of Cu species. The higher Co<sup>0</sup> proportion mitigated the impact of Co evolution. Hence, K doping Cu-rich catalysts boosted total alcohol selectivity from 9.1 % to 17.4 %, reduced methanol fraction from 61.7 % to 37.1 %, and achieved excellent stability during 100 h test.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"702 ","pages":"Article 120333"},"PeriodicalIF":4.7,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

High-performance B2O3/SiO2-TiO2 catalyst for propane oxidation to olefins 丙烷氧化制烯烃的高性能B2O3/SiO2-TiO2催化剂

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-05-07 DOI: 10.1016/j.apcata.2025.120329

Xiaoyu Yan, Yuhan Sun, Xiaoqing Xu, Jiale Xu, Rui Huang, Renjie Ji, Chunyi Li

{"title":"High-performance B2O3/SiO2-TiO2 catalyst for propane oxidation to olefins","authors":"Xiaoyu Yan, Yuhan Sun, Xiaoqing Xu, Jiale Xu, Rui Huang, Renjie Ji, Chunyi Li","doi":"10.1016/j.apcata.2025.120329","DOIUrl":"10.1016/j.apcata.2025.120329","url":null,"abstract":"<div><div>Conventional mixed metal oxide catalysts for oxidative dehydrogenation of propane (ODHP) often face challenges in balancing propane conversion and olefin selectivity. In contrast, boron-containing catalysts can achieve higher selectivity for olefins. In this study, B<sub>2</sub>O<sub>3</sub>/SiO<sub>2</sub>-TiO<sub>2</sub> catalysts were prepared via mechanical mixing and calcination, demonstrating high activity in ODHP with propylene and ethylene as primary products. At 620 °C, propane conversion reached 60.8 %, with total olefin selectivity of 70.2 %. Unlike h-BN or BO<sub>x</sub>/carrier catalysts, B<sub>2</sub>O<sub>3</sub> was directly used as both feedstock and active component, eliminating the need for an induction period. The mixed SiO<sub>2</sub>-TiO<sub>2</sub> carrier anchored boron species on the TiO<sub>2</sub> surface, reducing boron loss and enhancing stability compared to pure SiO<sub>2</sub>-supported catalysts. These results highlight the potential of B<sub>2</sub>O<sub>3</sub>/SiO<sub>2</sub>-TiO<sub>2</sub> for efficient propane oxidative dehydrogenation to olefins.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"701 ","pages":"Article 120329"},"PeriodicalIF":4.7,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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