Catalysis Letters最新文献

CNTs Coordination-Embedded into Copper–Pyrazole MOFs for Selective Electrocatalytic CO2 to C2H4

IF 2.3 4区化学

Catalysis Letters Pub Date : 2025-04-04 DOI: 10.1007/s10562-025-05008-6

Zi Wan, Yunxin Dai, Jiajun Ma, Yunxia Zhao

{"title":"CNTs Coordination-Embedded into Copper–Pyrazole MOFs for Selective Electrocatalytic CO2 to C2H4","authors":"Zi Wan, Yunxin Dai, Jiajun Ma, Yunxia Zhao","doi":"10.1007/s10562-025-05008-6","DOIUrl":"10.1007/s10562-025-05008-6","url":null,"abstract":"<div><p>Selective electrolytic CO<sub>2</sub> to C<sub>2</sub>H<sub>4</sub> is a meaningful pathway to alleviate both energy and environmental concerns. Copper–pyrazole MOFs (CuPz) has emerged as a highly promising and ideal catalytic material for C<sub>2</sub>H<sub>4</sub> production from electrocatalytic CO<sub>2</sub> reduction. Here, short carbon nanotubes (CNTs) or functionalized CNTs were in situ embedded into CuPz to enhance its electrical conductivity and to regulate the direct coordination microenvironment of the Cu active center. Following a pre-reduction at − 1.3 V vs. reversible hydrogen electrode (RHE), a further increase in low-valent Cu was observed on the surface of CuPz, particularly in the case of CuPz@FCNT-A, with Cu<sup>+</sup> accounting for over 50%. This resulted in the highest C<sub>2</sub>H<sub>4</sub> selectivity (55.3% FE<sub>C2H4</sub>) at − 1.1 V vs. RHE and excellent stability. The embedding of short CNTs or functionalized CNTs exposed more active sites, and, at the same time, enhanced the catalysts’ electron transfer ability. Notably, functionalized CNTs exhibited a more pronounced positive impact than pristine CNTs. The reaction mechanism responsible for C<sub>2</sub>H<sub>4</sub> production was elucidated through in situ attenuated total reflection-fourier transform infrared spectroscopy (ATR-FTIR) analysis, which revealed that *CO dimerization was the primary pathway and *CO–*COH coupling was the secondary one.</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":"155 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769846","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 on the Effect and Mechanism of Ru Precursors and Alkali Metal Modification on Ru/Pr6O11 Catalysts for Ammonia Decomposition

IF 2.3 4区化学

Catalysis Letters Pub Date : 2025-04-04 DOI: 10.1007/s10562-025-04992-z

Bin Guan, Junyan Chen, Zhongqi Zhuang, Lei Zhu, Zeren Ma, Xuehan Hu, Chenyu Zhu, Sikai Zhao, Kaiyou Shu, Hongtao Dang, Junjie Gao, Luyang Zhang, Tiankui Zhu, Zhen Huang

{"title":"Study on the Effect and Mechanism of Ru Precursors and Alkali Metal Modification on Ru/Pr6O11 Catalysts for Ammonia Decomposition","authors":"Bin Guan, Junyan Chen, Zhongqi Zhuang, Lei Zhu, Zeren Ma, Xuehan Hu, Chenyu Zhu, Sikai Zhao, Kaiyou Shu, Hongtao Dang, Junjie Gao, Luyang Zhang, Tiankui Zhu, Zhen Huang","doi":"10.1007/s10562-025-04992-z","DOIUrl":"10.1007/s10562-025-04992-z","url":null,"abstract":"<div><p>Facing with the problem of low activity at low temperatures of Ru-based ammonia decomposition catalyst, herein, the influence of Ru precursor and alkali metal modification on the hydrogen production activity of Ru/Pr<sub>6</sub>O<sub>11</sub> catalyst were studied. The Cs/Ru<sub>3</sub>(CO)<sub>12</sub>/Pr<sub>6</sub>O<sub>11</sub> catalyst exhibited the optimal activity (NH<sub>3</sub> conversion of 46.1% and H<sub>2</sub> production rate of 1.024 mmol·min<sup>−1</sup>·gcat<sup>−1</sup> at 350 °C). Characterizations showed that Ru<sub>3</sub>(CO)<sub>12</sub>/Pr<sub>6</sub>O<sub>11</sub> has the smallest Ru particle size and the most uniform size distribution, and the existence of PrO<sub>2</sub> phase in Ru(NO)(NO<sub>3</sub>)<sub>3</sub>/Pr<sub>6</sub>O<sub>11</sub> and Cl<sup>−</sup> groups in RuCl<sub>3</sub>/Pr<sub>6</sub>O<sub>11</sub> reduce the activity. Additionally, due to hydrogen spillover, SMSI and Ru re-distribution, the more alkaline alkali metal has a stronger promoting effect, which follows the law of volcanic curve. In-situ DRIFTS and DFT calculations showed that the rate determining step on Ru(0001) surface is the first dehydrogenation step of NH<sub>3</sub> with the activation barrier of 2.19 eV.</p></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769777","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

Evaluation of Spinel Ferrites MFe2O4 (M = Cu, Ni, Zn, and Co) Photocatalytic Properties in Selective Dehydrogenation of Formic Acid Towards Hydrogen Production

IF 2.3 4区化学

Catalysis Letters Pub Date : 2025-04-04 DOI: 10.1007/s10562-025-05007-7

Afrah Bardaoui, Hanen Abdelli, Amira Siai, Ibtissem Ben Assaker

{"title":"Evaluation of Spinel Ferrites MFe2O4 (M = Cu, Ni, Zn, and Co) Photocatalytic Properties in Selective Dehydrogenation of Formic Acid Towards Hydrogen Production","authors":"Afrah Bardaoui, Hanen Abdelli, Amira Siai, Ibtissem Ben Assaker","doi":"10.1007/s10562-025-05007-7","DOIUrl":"10.1007/s10562-025-05007-7","url":null,"abstract":"<div><p>Formic acid is regarded as a promising energy carrier and hydrogen storage medium for a carbon-neutral economy. This paper introduces a scalable and efficient system for the selective photocatalytic conversion of liquid formic acid into hydrogen, under visible light. Formic acid decomposition can initiate two reactions. The first, called dehydration, results in the formation of carbon monoxide and water. The second, called dehydrogenation, results in the formation of carbon dioxide and hydrogen. In the present work, spinel ferrites (MFe<sub>2</sub>O<sub>4</sub>: M = Cu, Ni, Zn, and Co) are used as photocatalysts to selectively drive the dehydrogenation reaction to produce hydrogen. These catalysts were synthesized via a starch mediated auto-combustion solgel method, yielding crystallite sizes between 47 and 112 nm. Their structural, morphological, and optical properties are determined, including the band gap values ranging from 1.6 to 2.2 eV. The photocatalytic dehydrogenation process was monitored in real time using Fourier transform infrared spectroscopy (FTIR). This analysis revealed a dehydrogenation selectivity across all spinel ferrite samples but with varied amounts of the released CO<sub>2</sub>. The highest amounts of CO₂ released after 10 h, both in the dark and under illumination, were observed for NiFe₂O₄ and ZnFe₂O₄. NiFe₂O₄ exhibits superior performance under dark conditions, while ZnFe₂O₄ demonstrates a more important activity under light irradiation. The results demonstrate that NiFe₂O₄ and ZnFe₂O₄ exhibit CO₂ production rates 3 to 4 times higher than those of CoFe₂O₄ and CuFe₂O₄ under light condition, highlighting the potential of these spinel ferrites as efficient photocatalysts for the dehydrogenation of formic acid.</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":"155 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769840","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

Role of Acid Site Density and Pore Type on the Brønsted Acid Strength of Zeolite H-ZSM-5

IF 2.3 4区化学

Catalysis Letters Pub Date : 2025-04-04 DOI: 10.1007/s10562-025-04991-0

Stefan Adrian F. Nastase, Luigi Cavallo

引用次数: 0

Modification of AgInS2/g-C3N4 Z-Scheme Heterojunction by Ag Nanoparticles to Increase Photocatalytic Rate

IF 2.3 4区化学

Catalysis Letters Pub Date : 2025-04-04 DOI: 10.1007/s10562-025-04975-0

Yang Bai, Zhongxiang Chen, Deng Gu, Ren Wang, Jianing He

{"title":"Modification of AgInS2/g-C3N4 Z-Scheme Heterojunction by Ag Nanoparticles to Increase Photocatalytic Rate","authors":"Yang Bai, Zhongxiang Chen, Deng Gu, Ren Wang, Jianing He","doi":"10.1007/s10562-025-04975-0","DOIUrl":"10.1007/s10562-025-04975-0","url":null,"abstract":"<div><p>The Surface Plasmon Resonance (SPR) effect and the construction of Z-scheme heterojunctions are critical for enhancing photocatalytic rates. Herein, a composite material composed of a Z-scheme heterojunction structure, AgInS<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> (AIS/GCN), was developed and further optimized through the modification of Ag nanoparticles (Ag NPs). The SPR effect of Ag NPs significantly improved the electron transfer characteristics of GCN, leading to enhanced separation efficiency of electron-hole pairs. By leveraging the advantages of the Z-scheme heterojunction, the composite not only effectively enhanced charge carrier separation but also improved light absorption and increased the density of active catalytic sites. To evaluate the photocatalytic degradation efficiency of Rhodamine B (RhB) and the photoreduction efficiency of Cr (VI) using the Ag/AIS/GCN nanocomposite, a systematic characterization analysis was conducted. The results demonstrated that the degradation rate and photoreduction efficiency of the Ag NPs-modified AIS/GCN Z-scheme heterojunction composite were 5.30 times and 7.22 times higher than those of pure GCN, the TOC removal rate of the sample reached 56.19%. The incorporation of Ag NPs and AIS significantly enhanced light energy utilization efficiency, increased the number of surface-active sites, and improved charge carrier transport rates. This study illustrates that the combination of the SPR effect and Z-scheme heterojunction construction markedly enhances the efficiency and stability of the photocatalyst, indicating the broad potential applications of this composite in dye purification and heavy metal removal.</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":"155 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769843","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

Solid Acid Catalysts in Tert-Butyl Removal Reaction of 4,6-DBMC: Performance Insights and Industrial Implications

IF 2.3 4区化学

Catalysis Letters Pub Date : 2025-04-04 DOI: 10.1007/s10562-025-04985-y

Xiangke Wang, Xuan Meng, Li Shi, Naiwang Liu, Jiyu Wang

{"title":"Solid Acid Catalysts in Tert-Butyl Removal Reaction of 4,6-DBMC: Performance Insights and Industrial Implications","authors":"Xiangke Wang, Xuan Meng, Li Shi, Naiwang Liu, Jiyu Wang","doi":"10.1007/s10562-025-04985-y","DOIUrl":"10.1007/s10562-025-04985-y","url":null,"abstract":"<div><p>In the tert-butyl removal reaction, solid acid catalysts have emerged as a preferred alternative to liquid acid catalysts due to their environmentally friendly advantages. Various zeolites, such as ZSM-5, MCM-41, USY, and H beta, as well as mesoporous materials, such as γ-Al<sub>2</sub>O<sub>3</sub> and active clay were employed for the first time to prepare m-cresol through the tert-butyl removal reaction of 4,6-di-tert-butyl-m-cresol (4,6-DBMC). γ-Al<sub>2</sub>O<sub>3</sub> and active clay catalysts were found to have excellent catalytic performance in this reaction. The thermodynamic properties of the tert-butyl removal reaction of 4,6-DBMC were studied. Under different temperature and solvent conditions, the product distribution was investigated. A proposed reaction pathway and mechanism were proposed. And through cyclic experiments, the stability of γ-Al<sub>2</sub>O<sub>3</sub> and active clay catalysts was investigated separately. After six cycles, the m-cresol yield for active clay catalyst was still maintained at about 90%. The causes of deactivation of the two catalysts were analyzed. After regeneration, both catalysts exhibited good regeneration performance. This study offers a basis for the selection of solid acid catalysts for the tert-butyl groups removal of 4,6-DBMC. </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":"155 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769841","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

Morphology-dependent Selectivity Switching of CeO2 in Tandem Conversion of Ethane and CO2

IF 2.3 4区化学

Catalysis Letters Pub Date : 2025-04-04 DOI: 10.1007/s10562-025-04977-y

Guozhi Lei, Shengpeng Xia, Kun Zhao, Zengli Zhao, Anqing Zheng

{"title":"Morphology-dependent Selectivity Switching of CeO2 in Tandem Conversion of Ethane and CO2","authors":"Guozhi Lei, Shengpeng Xia, Kun Zhao, Zengli Zhao, Anqing Zheng","doi":"10.1007/s10562-025-04977-y","DOIUrl":"10.1007/s10562-025-04977-y","url":null,"abstract":"<div><p>The tandem conversion of C<sub>2</sub>H<sub>6</sub> and CO<sub>2</sub> provides an opportunity to utilize underused shale gas while reducing greenhouse gas emissions efficiently. Although desirable, this transformation poses considerable challenges, particularly in the realm of catalyst design either through CO<sub>2</sub>-assisted ethane dehydrogenation (CO<sub>2</sub>-EDH) to produce ethene or by dry reforming (DR) to produce syngas. Here, we found that the morphology of CeO<sub>2</sub> could determine which pathway was predominant. Transmission electron microscope (TEM) and X-ray photoelectron spectrometer (XPS) analyses of Pt and Sn showed that the spherical morphology of CeO<sub>2</sub> was more conducive to generating platinum-tin metal clusters than CeO<sub>2</sub> nanorod, illustrating the relatively high C<sub>2</sub>H<sub>4</sub> selectivity (93.50%) of the spherical structure. In contrast, the nanorod-shaped CeO<sub>2</sub> demonstrated enhanced activation of reactants and facilitated the reaction towards synthesis gas production, with a remarkable CO<sub>2</sub> conversion rate of 84%, which was much higher than previous works. Electron paramagnetic resonance (EPR) spectroscopy and XPS analysis of oxygen revealed that the nanorod-shaped CeO<sub>2</sub> had more oxygen vacancies, enhancing CO<sub>2</sub> adsorption capacity and promoting the dispersion of active species, which were crucial for efficient tandem catalytic reactions. These findings provide a promising approach to advancing catalyst design for efficient shale gas utilization in a carbon-negative manner.</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":"155 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769880","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

The Effect of Precursor Temperature on the Surface and Interface Structure of Ni/ZSM-5 Hydrogenation Catalyst

IF 2.3 4区化学

Catalysis Letters Pub Date : 2025-04-04 DOI: 10.1007/s10562-025-05004-w

Guixian Li, Pengju Lei, Guang Chen, Xinhong Zhao, Zhibin Liu, Shoudeng Wang, Jichong Xia, Chengrong Kong, Dong Ji, Hongwei Li

{"title":"The Effect of Precursor Temperature on the Surface and Interface Structure of Ni/ZSM-5 Hydrogenation Catalyst","authors":"Guixian Li, Pengju Lei, Guang Chen, Xinhong Zhao, Zhibin Liu, Shoudeng Wang, Jichong Xia, Chengrong Kong, Dong Ji, Hongwei Li","doi":"10.1007/s10562-025-05004-w","DOIUrl":"10.1007/s10562-025-05004-w","url":null,"abstract":"<div><p>A series of Ni/ZSM-5 catalysts with different physical and chemical properties were prepared by immersion-precipitation method by adjusting the temperature of the precursor. The structure and properties of the catalyst were characterized by XRD, TEM, N<sub>2</sub> adsorption-desorption, H<sub>2</sub>-TPR, NH<sub>3</sub>-TPD and XPS. The influence of precursor temperature on the hydrogenation performance of m-dinitrobenzene was investigated, and the effects of reaction temperature and hydrogen pressure on the reaction were also examined, as well as the stability of the optimal catalyst. The results show that the particle size reduces gradually and the dispersion degree of Ni nanoparticles on ZSM-5 support becomes better as the precursor temperature is increased, which is conducive to improving the catalytic reaction rate. When the precursor temperature was 60 °C, the reaction temperature was 115 °C, the hydrogen pressure was 2.6 MPa, and a mixed solvent of ethanol and deionized water was employed. After 10 min of reaction, both the conversion rate of m-dinitrobenzene and the selectivity of m-phenylenediamine reached 100%. Under the same conditions, the conversion rate of m-dinitrobenzene was 44.73% and the selectivity of m-phenylenediamine was 9.83% after 60 min of reaction for Raney-Ni. The catalyst in this study not only saves solvent costs but also exhibits excellent catalytic performance in tests. After ten cycles of the catalyst, the conversion rate of m-dinitrobenzene was 100%, and the selectivity of m-phenylenediamine was 97.66%.</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":"155 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769839","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

Copper(I) Supported on Fe3O4/Glycine Nanocomposite: A Sustainable Magnetic Nanocatalyst for Click Synthesis of 1,2,3-Triazoles in Water

IF 2.3 4区化学

Catalysis Letters Pub Date : 2025-04-04 DOI: 10.1007/s10562-025-04999-6

Noura Aflak, Hicham Ben El Ayouchia, Lahoucine Bahsis, Salah-Eddine Stiriba

{"title":"Copper(I) Supported on Fe3O4/Glycine Nanocomposite: A Sustainable Magnetic Nanocatalyst for Click Synthesis of 1,2,3-Triazoles in Water","authors":"Noura Aflak, Hicham Ben El Ayouchia, Lahoucine Bahsis, Salah-Eddine Stiriba","doi":"10.1007/s10562-025-04999-6","DOIUrl":"10.1007/s10562-025-04999-6","url":null,"abstract":"<div><p>In line with the principles of green chemistry, this study presents the development of a sustainable and efficient copper(I) catalyst supported on Fe<sub>3</sub>O<sub>4</sub>-amino acid glycine magnetic nanocomposites for the synthesis of 1,2,3-triazole derivatives <i>via</i> copper-catalyzed azide-alkyne cycloaddition (CuAAC) click chemistry reactions. The catalyst was synthesized using a simple method and then characterized using multiple techniques, including XRD, FT-IR, SEM, EDX, TGA, and AAS, confirming its successful synthesis. Moreover, the catalytic system showed good catalytic activity for the selective synthesis of 1,4-disubstituted-1,2,3-triazoles, giving good to high yields under mild conditions with low catalyst loading. The environmental friendliness of the process was evaluated using atom economy (AE), E-factor, and EcoScale indicating a good level of sustainability. Furthermore, the Fe<sub>3</sub>O<sub>4</sub>-glycine/Cu(I) composite could be separated magnetically and reused over multiple cycles. The green advantages of this method are highlighted using water as a solvent, room-temperature reactions, and the easy separation of both final products and catalyst, which confirm the sustainability of this catalytic approach. </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":"155 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769842","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

Pickering Assisted Catalysis for Selective Synthesis of Benzalacetones

IF 2.3 4区化学

Catalysis Letters Pub Date : 2025-04-04 DOI: 10.1007/s10562-025-04984-z

Mohd Hasnain Sayed, Bhalchandra M. Bhanage, Radha V. Jayaram

{"title":"Pickering Assisted Catalysis for Selective Synthesis of Benzalacetones","authors":"Mohd Hasnain Sayed, Bhalchandra M. Bhanage, Radha V. Jayaram","doi":"10.1007/s10562-025-04984-z","DOIUrl":"10.1007/s10562-025-04984-z","url":null,"abstract":"<div><p>Pickering emulsions belong to the class of dispersion systems of two immiscible liquids stabilized by solid particles. The stability of such emulsions is affected by several parameters such as the method of emulsification, oil–water ratio, size, shape and amount of solid particles. In this study, rod-shaped MgO particles were prepared and characterized by XRD, FE-SEM, HR-TEM, DLS and CO<sub>2</sub>-TPD techniques. The as-prepared MgO particles were utilized in the Pickering-assisted catalytic system for the condensation of acetone with benzaldehyde and its derivatives. The compartmentalization of benzalacetone within oil droplets prevented further condensation resulting in high selectivity. The effect of the amount of MgO particles and various oil phases on the catalytic activity was studied. The synthetic utility of the system is demonstrated for gram-scale synthesis. The MgO-stabilized Pickering emulsion catalytic system was found to be reusable for at least five reaction cycles without any considerable loss in catalytic activity.</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":"155 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769802","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