Applied Catalysis A: General最新文献

Adsorption of Al2O3 {100} hydroxyl and Ni-Al2O3 electron transfer synergetic catalysis for efficient selective hydrogenation of unsaturated aldehydes

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-04-22 DOI: 10.1016/j.apcata.2025.120306

Tianyi Huang , Jiajia Wu , Yongqi Pan , Zhiyuan Yu , Fangyu Zhao , Shafqat Ullah , Yang Xu , Yong Chen , Zhehao Sun , Zongyou Yin , Qiangqiang Xue , Sibudjing Kawi , Shuliang Lu , Yujun Wang , Guangsheng Luo

{"title":"Adsorption of Al2O3 {100} hydroxyl and Ni-Al2O3 electron transfer synergetic catalysis for efficient selective hydrogenation of unsaturated aldehydes","authors":"Tianyi Huang , Jiajia Wu , Yongqi Pan , Zhiyuan Yu , Fangyu Zhao , Shafqat Ullah , Yang Xu , Yong Chen , Zhehao Sun , Zongyou Yin , Qiangqiang Xue , Sibudjing Kawi , Shuliang Lu , Yujun Wang , Guangsheng Luo","doi":"10.1016/j.apcata.2025.120306","DOIUrl":"10.1016/j.apcata.2025.120306","url":null,"abstract":"<div><div>The hydrogenation of the C<img>C bond in α-β unsaturated aldehydes faces substantial difficulties due to the steric hindrance and the conjugation effects of macromolecular unsaturated aldehydes. Herein, we introduce a novel approach to prepare nanosheet-structured Ni-Al<sub>2</sub>O<sub>3</sub> catalysts featuring exposed {100} crystal planes and hydroxyl groups, utilizing a microfluidic system to easily control crystal plane growth achieve support modification. In-situ characterizations and DFT calculations reveal that the exposed {100} crystal plane, a strong metal-support interaction (SMSI) promotes electron transfer of Ni and significantly reducing the C<img>C hydrogenation energy barrier from 3.12 eV to 1.79 eV. The hydroxyl environment facilitates effective adsorption of the C<img>O bond, accelerating the reaction and enabling rapid desorption of the product. Under modified reaction conditions for the preparation of 2-ethylhexanol, the catalyst still achieved a yield of 99.9 %. This simple method of support modification enables rapid large-scale preparation, possessing significant potential for industrial applications.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"700 ","pages":"Article 120306"},"PeriodicalIF":4.7,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868544","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

Solvent-free synthesis of mesoporous MoO3-V2O5/Al2O3 catalyst for liquid phase selective oxidation of furfural to maleic anhydride

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-04-22 DOI: 10.1016/j.apcata.2025.120308

Kasanneni Tirumala Venkateswara Rao , Donald R. Inns , Jeremy N. Winter , Troy D. Manning , John B. Claridge , Alexandros P. Katsoulidis , Matthew J. Rosseinsky

{"title":"Solvent-free synthesis of mesoporous MoO3-V2O5/Al2O3 catalyst for liquid phase selective oxidation of furfural to maleic anhydride","authors":"Kasanneni Tirumala Venkateswara Rao , Donald R. Inns , Jeremy N. Winter , Troy D. Manning , John B. Claridge , Alexandros P. Katsoulidis , Matthew J. Rosseinsky","doi":"10.1016/j.apcata.2025.120308","DOIUrl":"10.1016/j.apcata.2025.120308","url":null,"abstract":"<div><div>The catalytic selective oxidation of biomass-derived platform chemicals into monomers offers a sustainable alternative pathway to fossil-based production of chemicals. Herein, mesoporous Al<sub>2</sub>O<sub>3</sub> with dispersed Mo-V oxide catalysts were prepared through a solvent-free solid-state grinding method for the liquid phase oxidation of furfural to maleic anhydride. The selective oxidation of furfural to maleic anhydride was dependent on the Mo/V mole ratio of the catalyst, catalyst calcination temperature, and catalyst synthesis method. The synergistic interaction of Mo-V with Al<sub>2</sub>O<sub>3</sub> was identified as crucial for enhancing catalytic activity and selectivity towards maleic anhydride. The reusability of the 25Mo<sub>1</sub>VA catalyst was studied over five catalytic cycles with a progressive loss of maleic anhydride yield due to the formation of surface carbonaceous species. However, the majority of maleic anhydride yield could be recovered utilizing a catalyst regeneration cycle (600 °C, 3 h).</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"700 ","pages":"Article 120308"},"PeriodicalIF":4.7,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874145","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

Design of platinum group metal-free automotive three-way catalyst: MgMn2O4 and CuCo2O4 in tandem layout

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-04-21 DOI: 10.1016/j.apcata.2025.120305

Keisuke Maruichi , Taichi Yamaguchi , Ryosuke Sakai , Kakuya Ueda , Akira Oda , Atsushi Satsuma

引用次数: 0

Tailoring reactant adsorption on WO3 via surface bismuth incorporation for enhanced photocatalytic degradation of acetaldehyde

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-04-21 DOI: 10.1016/j.apcata.2025.120303

Qing Hua , Lei Cheng , Wenqiang Qu , Da Wu , Yuehua Li , Zixiang Xu , Xi Cao , Ming Xie , Xiaodong Yan , Chunwei Dong , Dengsong Zhang

{"title":"Tailoring reactant adsorption on WO3 via surface bismuth incorporation for enhanced photocatalytic degradation of acetaldehyde","authors":"Qing Hua , Lei Cheng , Wenqiang Qu , Da Wu , Yuehua Li , Zixiang Xu , Xi Cao , Ming Xie , Xiaodong Yan , Chunwei Dong , Dengsong Zhang","doi":"10.1016/j.apcata.2025.120303","DOIUrl":"10.1016/j.apcata.2025.120303","url":null,"abstract":"<div><div>The reactive oxygen species (ROS) are of paramount importance for indoor volatile organic compounds removal through photocatalytic technology. However, generating abundant ROS under visible light remains challenging, resulting in the poor photocatalytic performance. Herein, we report a bismuth-modified tungsten oxide (WO<sub>3</sub>-Bi) photocatalyst with enhanced performance in the visible-light-driven degradation of acetaldehyde, a major indoor air pollutant. Bismuth atoms are atomically doped onto WO<sub>3</sub> surface, in which the strong Bi-O adsorption strength facilitates the water and oxygen adsorption to provide abundant ROS. Mechanistic investigations reveal that the photocatalytic oxidation of acetaldehyde involves the C-C breaking of acetic acid into methanol, followed by the complete elimination. These results demonstrate that the surface modification in photocatalyst plays a pivotal role in improving ROS generation and photocatalytic performance, offering a robust and sustainable solution for indoor air purification under visible light.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"700 ","pages":"Article 120303"},"PeriodicalIF":4.7,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143860496","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

In-situ ionothermal synthesis of amorphous poly (heptazine imide) for the photoredox conversion of water

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-04-21 DOI: 10.1016/j.apcata.2025.120304

Yu Jin, Fudan Kong, Xiangjiao Gong, He Li, Xiaoqing Yan, Yang Li, Honghui Ou, Guidong Yang

{"title":"In-situ ionothermal synthesis of amorphous poly (heptazine imide) for the photoredox conversion of water","authors":"Yu Jin, Fudan Kong, Xiangjiao Gong, He Li, Xiaoqing Yan, Yang Li, Honghui Ou, Guidong Yang","doi":"10.1016/j.apcata.2025.120304","DOIUrl":"10.1016/j.apcata.2025.120304","url":null,"abstract":"<div><div>In this study, in-situ ionothermal one-step synthesis was chosen to prepare amorphous potassium poly (heptazine imide) (APHI). The synthetic by-product potassium chloride (KCl) is critical in the thermal polymerisation procedure, which can effectively control the precursor conversion, optimise the structure and obtain amorphous APHI. Compared with the traditional highly crystalline poly (heptazine imide) (PHI), APHI maintains the chemical structure of PHI while introducing cyano groups and adjusting the bandgap. resulting in a higher photogenerated charge transfer rate and improved photocatalytic activity. The hydrogen production rate of APHI reaches 67 μmol h<sup>−1</sup>, and its apparent quantum yield (AQY) is 4 % at 420 nm. It's worth mentioning that APHI also achieved remarkable results in the H<sub>2</sub>O<sub>2</sub> generation reaction, with a generation rate of 382 μmol h<sup>−1</sup>. This rate surpasses that of highly crystalline PHI and other carbon-nitride-based catalysts such as PTI, CN. The improvement is likely attributed to its amorphous structure and the incorporation of cyano groups. The in-situ ionothermal one-step synthesis method introduced in this study not only offers a new way to prepare APHI but also provides valuable insights for designing highly efficient photocatalysts.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"700 ","pages":"Article 120304"},"PeriodicalIF":4.7,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868545","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

Acid-base bifunctional porous organic polymers as efficient catalysts for oil shale upgrading

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-04-18 DOI: 10.1016/j.apcata.2025.120298

Xinbo Wang , Pengcheng Ma , Cong Yu , Junjie Bian , Xianglong Meng

引用次数: 0

Surface potential charge modulation and sequential etching strategies for optimizing SAPO-34 catalysts in the MTO process: Mechanistic insights into catalytic performance

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-04-16 DOI: 10.1016/j.apcata.2025.120290

Hossein Mozafari Khalafbadam, Jafar Towfighi Darian, Masoud Safari Yazd

{"title":"Surface potential charge modulation and sequential etching strategies for optimizing SAPO-34 catalysts in the MTO process: Mechanistic insights into catalytic performance","authors":"Hossein Mozafari Khalafbadam, Jafar Towfighi Darian, Masoud Safari Yazd","doi":"10.1016/j.apcata.2025.120290","DOIUrl":"10.1016/j.apcata.2025.120290","url":null,"abstract":"<div><div>The methanol-to-olefins (MTO) process over SAPO-34 catalysts is significantly influenced by surface potential charge, affecting methanol adsorption, intermediate spillover, and coke formation. This study investigates the catalytic performance and mechanistic behavior of SAPO-34 catalysts modified through acidic (SP34-A), basic (SP34-B), and sequential acid-base (SP34-AB) etching, with the unmodified SAPO-34 (SP34-P) serving as a reference. The impact of surface potential charge on catalyst performance was examined using molecular dynamics (MD) simulations, NH<sub>3</sub>-TPD acidity measurements, and zeta potential analysis. The results reveal that a highly negative surface charge (SP34-A, −67 mV) intensifies methanol adsorption but limits spillover efficiency, promoting formaldehyde accumulation and increasing coke deposition, ultimately reducing catalyst lifetime. In contrast, a positive surface charge (SP34-B, +22 mV) enhances spillover and moderates adsorption strength, reducing coke formation and extending catalyst stability. The sequential acid-base etched catalyst (SP34-AB, +16.9 mV) achieves a well-balanced surface charge, optimizing methanol adsorption, spillover behavior, and diffusion efficiency. This balance minimizes secondary reactions, extends catalyst lifetime (586 min, 1.63 times longer than SP34-P), and improves light olefin selectivity (88.82 %), demonstrating the superior catalytic performance of SP34-AB. Structural and textural analysis further confirms that hierarchical porosity, induced via sequential etching, enhances mass transfer and mitigates diffusion limitations, preventing excessive coke formation. These findings establish surface potential charge as a critical parameter in SAPO-34 catalyst design, highlighting sequential acid-base etching as an effective modification strategy to enhance MTO efficiency and catalyst longevity.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"700 ","pages":"Article 120290"},"PeriodicalIF":4.7,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143838330","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

Oxidative conversion of cyclohexane to olefins on hexagonal boron nitride

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-04-15 DOI: 10.1016/j.apcata.2025.120289

Wenru Li , Peiling Zhang , Jianjun Liu , Xin Li , Shaolong Wan , Shuai Wang , Yong Wang , Jingdong Lin

{"title":"Oxidative conversion of cyclohexane to olefins on hexagonal boron nitride","authors":"Wenru Li , Peiling Zhang , Jianjun Liu , Xin Li , Shaolong Wan , Shuai Wang , Yong Wang , Jingdong Lin","doi":"10.1016/j.apcata.2025.120289","DOIUrl":"10.1016/j.apcata.2025.120289","url":null,"abstract":"<div><div>The oxidative conversion of cyclohexane (OCC) to valuable olefins presents an innovative strategy for efficient utilization, overcoming its inherent resistance to traditional cracking methods. This study demonstrates the superior performance of hexagonal boron nitride (<em>h</em>-BN) in OCC, especially mitigating deep oxidation and dehydrogenation to achieve high olefin selectivity. At 550°C, with 32.5 % cyclohexane conversion, cyclohexene selectivity reaches 49.1 % and open-ring alkenes account for 20.1 %. The reaction is driven by gas-phase free radical mechanism, where higher reaction temperature and alkyl-oxygen ratio favor forming open-ring alkenes while maintaining high cyclohexene selectivity. The weak adsorption of olefins on <em>h</em>-BN and the suppression of deep oxidation and dehydrogenation through radical-mediated pathways are crucial for its exceptional performance. This approach effectively minimizes further oxidation and dehydrogenation of radicals and olefins, enhancing olefin selectivity. These findings provide a promising pathway for efficient cyclohexane utilization and advance the understanding of <em>h</em>-BN’s catalytic role in alkane oxidation process.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"700 ","pages":"Article 120289"},"PeriodicalIF":4.7,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850068","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

An alternative photochemical water oxidation pathway driven by halide ions as electron relay

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-04-14 DOI: 10.1016/j.apcata.2025.120287

Chaowei Peng, Miao Shui, Haorui Wang, Hongfei Liu

引用次数: 0

Optimizing Mn/SiO2 catalyst for additive - free epoxidation of long - chain α -olefins in air

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2025-04-14 DOI: 10.1016/j.apcata.2025.120288

Fangchao Wang , Rui Liu , Hongyi Cui , Ali Ramazani , Ali Morsali , Guoying Zhang

{"title":"Optimizing Mn/SiO2 catalyst for additive - free epoxidation of long - chain α -olefins in air","authors":"Fangchao Wang , Rui Liu , Hongyi Cui , Ali Ramazani , Ali Morsali , Guoying Zhang","doi":"10.1016/j.apcata.2025.120288","DOIUrl":"10.1016/j.apcata.2025.120288","url":null,"abstract":"<div><div>The epoxidation of long-chain α-olefins presents a significant challenge in synthetic chemistry, particularly when employing molecular oxygen from air as the sole oxidant under additive-free conditions. In this study, we demonstrate that manganese supported on mesoporous silica (Mn/MSN) effectively catalyzes the aerobic epoxidation of long-chain α-olefins without requiring initiators or sacrificial agents. Mechanistic investigations reveal a synergistic interplay between Mn(II) and Mn(III) species, which facilitates the selective cleavage the peroxo bonds (O–O) in alkyl hydroperoxide intermediates. Strategic incorporation of iron and zirconium into the Mn/MSN framework modulates the manganese oxidation states, enriching the Mn(II)/Mn(III) ratio and achieving a remarkable space-time yield of up to 200 mol <sub>epoxide</sub> mol⁻¹<sub>Mn</sub> h⁻¹ . Radical trapping experiments combined with high-resolution mass spectrometry corroborate the formation of allyl carbon-centered and alkoxy radical intermediates during the reaction. This work provides a feasible strategy for long-chain α-olefin aerobic epoxidation without any additives.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"700 ","pages":"Article 120288"},"PeriodicalIF":4.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143838328","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