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ZSM-23-Supported Nickel Phosphide Catalysts for n-Alkane Hydroisomerization zsm -23负载的正构烷烃加氢异构化磷化镍催化剂
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-01-02 DOI: 10.1007/s10562-024-04895-5
Tatyana S. Bogomolova, Marina Yu. Smirnova, Mikhail V. Parfenov, Svetlana V. Cherepanova, Maxim A. Panafidin, Oleg V. Klimov, Alexander S. Noskov
{"title":"ZSM-23-Supported Nickel Phosphide Catalysts for n-Alkane Hydroisomerization","authors":"Tatyana S. Bogomolova,&nbsp;Marina Yu. Smirnova,&nbsp;Mikhail V. Parfenov,&nbsp;Svetlana V. Cherepanova,&nbsp;Maxim A. Panafidin,&nbsp;Oleg V. Klimov,&nbsp;Alexander S. Noskov","doi":"10.1007/s10562-024-04895-5","DOIUrl":"10.1007/s10562-024-04895-5","url":null,"abstract":"<div><p>A series of supported Ni phosphide bifunctional hydroisomerization catalysts (Ni<sub>2</sub>P/ZSM-23/Al<sub>2</sub>O<sub>3</sub>) was synthesized by means of Ni hypophosphite reduction at different temperatures. The structure and morphology of Ni phosphide phase were determined by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The surface chemical analysis was performed using X-ray photoelectron spectroscopy (XPS). The hydro/dehydrogenation and acid functions of catalysts were characterized by CO chemisorption, NH<sub>3</sub>-TPD and IR-spectroscopy of adsorbed pyridine (IR-Py). The reduction of supported precursor at the temperature lying in the range of 550–650 ⁰С resulted in high activity and iso-selectivity in n-decane conversion. The reduction of the supported component at 500 ⁰C or re-reduction of ex-situ reduced and passivated catalysts at 450 ⁰C led to the formation of impurities of other Ni phosphides such as NiP and Ni<sub>5</sub>P<sub>4</sub> and had a negative impact on n-decane conversion. Both the Brønsted acidity and Ni<sub>2</sub>P dispersion of the catalysts declined with increasing Ni<sub>2</sub>P content which were accompanied by a drop in their activity without loss of iso-selectivity.</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 2","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142912896","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
Synthesis of UiO–66–NH2(Ti/Zr) and its Catalytic Conversion of Cellulose to 5-HMF UiO-66-NH2 (Ti/Zr)的合成及其催化纤维素制5-羟甲基糠醛的研究
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-01-02 DOI: 10.1007/s10562-024-04851-3
Lingling Xu, Xiaomei Pan, Lijing Gao, Ruiping Wei, Jihang Li, Xiu Wen, Yuanzhuang Li, Guomin Xiao
{"title":"Synthesis of UiO–66–NH2(Ti/Zr) and its Catalytic Conversion of Cellulose to 5-HMF","authors":"Lingling Xu,&nbsp;Xiaomei Pan,&nbsp;Lijing Gao,&nbsp;Ruiping Wei,&nbsp;Jihang Li,&nbsp;Xiu Wen,&nbsp;Yuanzhuang Li,&nbsp;Guomin Xiao","doi":"10.1007/s10562-024-04851-3","DOIUrl":"10.1007/s10562-024-04851-3","url":null,"abstract":"<div><p>UiO–66–NH<sub>2</sub>(Ti/Zr) modified by Ti metal oxide (TiO<sub>2</sub>) was used to catalyze the hydrolysis of cellulose to prepare 5-HMF. Under the optimal reaction conditions of H<sub>2</sub>O(NaCl)/THF(1/4 mL), 190 °C, 2 h and 50 mg UNT-3(Ti/Zr) (TiO<sub>2</sub> and UiO–66–NH<sub>2</sub> with mass of 1.5 and 0.1 g, respectively), the yield of 5-hydroxymethylfurfural reached 59.88%. UiO–66–NH<sub>2</sub>(Ti/Zr) nanocomposites with different mass ratios were successfully prepared by simple solvent evaporation method. SEM and TEM have shown that the modified UiO–66–NH<sub>2</sub>(Ti/Zr) are wrapped into sphere by TiO<sub>2</sub> densely attached to the surface of UiO–66–NH<sub>2</sub>, which provides favorable conditions for the uniform dispersion of TiO<sub>2</sub> and coordination of the Lewis acidic site of UiO–66–NH<sub>2</sub>. NH<sub>3</sub>–TPD results confirmed the existence of super-strong, strong, middle and weak acid sites in UiO–66–NH<sub>2</sub>(Ti/Zr), and Py-FTIR confirmed the existence of Brønsted and Lewis acids. After four cycles, the yield of 5-HMF and FUR decreased slightly from 59.88 to 51.89% and 9.11 to 7.66%, respectively, and the yield of 5-HMF could still remain above 50%. The results showed that the modified composite treatment of TiO<sub>2</sub> with rich Lewis acid/base and UiO–66–NH<sub>2</sub> could provide a certain idea for the extensive application of biomass research in the future.</p><h3>Graphic Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 2","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142912894","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
Novel Zn4In2S7 Loaded Mg/N Doped CQDs Composites with Improved Visible-Light Photocatalytic Properties for Depolymerization of Sodium Lignosulfonate 新型Zn4In2S7负载Mg/N掺杂CQDs复合材料对木质素磺酸钠解聚的可见光催化性能改进
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-01-02 DOI: 10.1007/s10562-024-04899-1
Jinhai Hu, Guanhong He, Kai Zhang, Yilin Wu, Hong Yan
{"title":"Novel Zn4In2S7 Loaded Mg/N Doped CQDs Composites with Improved Visible-Light Photocatalytic Properties for Depolymerization of Sodium Lignosulfonate","authors":"Jinhai Hu,&nbsp;Guanhong He,&nbsp;Kai Zhang,&nbsp;Yilin Wu,&nbsp;Hong Yan","doi":"10.1007/s10562-024-04899-1","DOIUrl":"10.1007/s10562-024-04899-1","url":null,"abstract":"<div><p>Photocatalysis purifies industrial paper wastewater by selectively breaking bonding bonds in lignin. To address the shortcomings of single photocatalysts such as narrow photoresponsive region, high photogenerated carrier complexation rate, and low photocatalytic activity. In this paper, Mg and N doped carbon quantum dots (Mg/N doped CQDs) were prepared by hydrothermal method. Then Zn<sub>4</sub>In<sub>2</sub>S<sub>7</sub> series catalysts with different loadings (0, 0.3, 0.6, 1.2 wt %) of Mg/N doped CQDs (denoted as ZIS 350 °C, ZIS-3 350 °C, ZIS-6 350 °C, ZIS-12 350 °C) were constructed based on condensation reflux and inert gas calcination method. The catalyst possesses highly efficient visible light-catalyzed depolymerization of sodium lignosulfonate (SLS), an industrial waste material. From the BET curve, the specific surface area of ZIS-6 350 °C was the largest. The composite of Mg/N doped CQDs reduced the band gap of Zn<sub>4</sub>In<sub>2</sub>S<sub>7</sub> while promoting the separation and transfer of photogenerated electrons/holes, as confirmed by DRS, Mott-Schottky, transient photocurrent and EIS analyses. From the photocatalytic activity test, the photocatalytic depolymerization of lignin by ZIS-6 350 °C was increased by 21.2% compared with that of ZIS 350 °C, and the reactions all follow the pseudo first order kinetic model. A possible photocatalytic mechanism was proposed based on the active species capture experiments.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 2","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142912898","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
Synthesis and Application of L-Proline Taurinate as a Novel Bifunctional Ionic Catalyst for the Highly Efficient Synthesis of 2-Amino-3-Cyano-4H-Pyrans and Pyran-Annulated Heterocycles l -脯氨酸牛磺酸盐作为高效合成2-氨基-3-氰基- 4h -吡喃和吡喃环杂环的新型双功能离子催化剂的合成及应用
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-01-02 DOI: 10.1007/s10562-024-04892-8
Sunita Teli, Shivani Soni, Pankaj Teli, Mehul Darji, Anu Manhas, Shikha Agarwal
{"title":"Synthesis and Application of L-Proline Taurinate as a Novel Bifunctional Ionic Catalyst for the Highly Efficient Synthesis of 2-Amino-3-Cyano-4H-Pyrans and Pyran-Annulated Heterocycles","authors":"Sunita Teli,&nbsp;Shivani Soni,&nbsp;Pankaj Teli,&nbsp;Mehul Darji,&nbsp;Anu Manhas,&nbsp;Shikha Agarwal","doi":"10.1007/s10562-024-04892-8","DOIUrl":"10.1007/s10562-024-04892-8","url":null,"abstract":"<div><p>This research introduces a groundbreaking bifunctional ionic catalyst, L-proline taurinate, synthesized in water using biodegradable materials, aligning with green chemistry principles. The structure of the synthesized catalyst was characterized using FT-IR, <sup>1</sup>H NMR, <sup>13</sup>C NMR, and HRMS. The ionic nature of the catalyst was validated through density functional theory analysis. The catalyst demonstrated exceptional efficiency in the green synthesis of 2-amino-3-cyano-4<i>H</i>-pyrans and pyran-annulated heterocyclic scaffolds. A total of 23 compounds were synthesized in less than 10 min with excellent yields (86–98%), through the Knoevenagel-Michael-cyclization coupling reaction of aldehydes, 1,3-diketones, and malononitrile. The substrate versatility was demonstrated with substituted aromatic and heterocyclic aldehydes, along with 1,3-dicarbonyl compounds like dimedone, 1,3-cyclohexanedione, and 4-hydroxy-2<i>H</i>-chromen-2-one, as well as barbituric acid, 2-thiobarbituric acid, and 3-methyl-1-phenyl-2-pyrazoline-5-one. This robust protocol boasts features such as one-pot, single-step, three-component operations, easy catalyst separation and recycling potential, broad applicability to various substrates, and suitability for gram-scale production. This innovative approach represents a major stride in sustainable catalytic technology and green chemical procedures, paving the way for future advancements in eco-friendly synthesis techniques.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 2","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142913043","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
Cu Nanoparticles Decorated on Magnetic NH2-MIL-101(Fe): A Highly Active Catalyst for C–N Coupling and Reductive Degradation of Dyes 磁性NH2-MIL-101(Fe)修饰的Cu纳米颗粒:C-N偶联和染料还原降解的高活性催化剂
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-01-02 DOI: 10.1007/s10562-024-04893-7
Sukanya Sharma, Vrinda Sharma, Surbhi Sharma, Gunjan Vaid, Satya Paul
{"title":"Cu Nanoparticles Decorated on Magnetic NH2-MIL-101(Fe): A Highly Active Catalyst for C–N Coupling and Reductive Degradation of Dyes","authors":"Sukanya Sharma,&nbsp;Vrinda Sharma,&nbsp;Surbhi Sharma,&nbsp;Gunjan Vaid,&nbsp;Satya Paul","doi":"10.1007/s10562-024-04893-7","DOIUrl":"10.1007/s10562-024-04893-7","url":null,"abstract":"<div><p>In the pursuit of advanced catalytic materials, the synergistic integration of diverse components within a single platform has emerged as a transformative strategy. This paper unveils the synthesis of Cu nanoparticles immobilized on different magnetic metal–organic frameworks [NH<sub>2</sub>-MIL-101(Fe), MIL-101(Fe) and MIL-101(Cr)]. The main focus of the present work is to study the effect of different metal ion and ligand of the framework on the catalytic activity of Cu nanoparticles. The catalytic potential of synthesized catalysts was compared for C–N coupling and reductive degradation of organic dyes. Among the three synthesized catalysts, Cu@NH<sub>2</sub>-MIL-101(Fe)/Fe<sub>3</sub>O<sub>4</sub> demonstrated high activity attributed to the synergistic interaction between NH<sub>2</sub>-MIL-101(Fe) and Cu as well as due to higher immobilization of catalytically active Cu nanoparticles. The catalyst offered virtues like mild reaction conditions, magnetically separable, ligand-free conditions, high product yield; and turnover number in the range of 3.68 to 5.46. Moreover, the catalyst maintains its structural integrity, chemical properties and effective magnetic response after five catalytic cycles, as demonstrated by FTIR, XRD, XPS and VSM analysis of the recycled catalyst.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 2","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142912893","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
SnO2/SnS2 Heterojunction with Mesoporous Structure for Improved Photocatalytic Degradation of Sulfonamide Antibiotics 介孔结构SnO2/SnS2异质结改善磺胺类抗生素光催化降解
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-01-02 DOI: 10.1007/s10562-024-04883-9
Zhanyu Li, Pengyu Li, Yike Fang, Bingxu Chen, Danfeng He, Wei Sun, Guohui Li, Yuanyuan Sun
{"title":"SnO2/SnS2 Heterojunction with Mesoporous Structure for Improved Photocatalytic Degradation of Sulfonamide Antibiotics","authors":"Zhanyu Li,&nbsp;Pengyu Li,&nbsp;Yike Fang,&nbsp;Bingxu Chen,&nbsp;Danfeng He,&nbsp;Wei Sun,&nbsp;Guohui Li,&nbsp;Yuanyuan Sun","doi":"10.1007/s10562-024-04883-9","DOIUrl":"10.1007/s10562-024-04883-9","url":null,"abstract":"<div><p>The SnO<sub>2</sub>/SnS<sub>2</sub> composite photocatalyst with mesoporous structure and Type-II heterojunction was successfully constructed, and sulfonamide antibiotics were used as the target degrader to explore the effects of mesoporous and heterojunction structures in SnO<sub>2</sub>/SnS<sub>2</sub> on the photocatalytic degradation activity under visible light irradiation. The results show that SnO<sub>2</sub>/SnS<sub>2</sub> obtained by hydrothermal reaction at 180 °C presents a unique flower-like spherical structure with high crystallinity and a particle size of about 5 μm, a large mesoporous pore size of 12.33 nm provided abundant ion or molecular channels and a relatively high specific surface area of 50 m<sup>2</sup><b>·</b>g<sup>− 1</sup> provided abundant active sites. In addition, SnO<sub>2</sub>/SnS<sub>2</sub> has low fluorescence intensity, indicating that the Type-II heterojunction structure formed promoted charge transfer, resulting in a higher separation efficiency of photo-generated charges (h<sup>+</sup>/e<sup>−</sup>). It is worth noting that SnO<sub>2</sub>/SnS<sub>2</sub> has a strong light response at the wavelength of 200–800 nm, and degradation rate of SnO<sub>2</sub>/SnS<sub>2</sub> was 1.7 times that of SnO<sub>2</sub> and 1.5 times that of SnS<sub>2</sub>, after photocatalytic reaction time of 210 min, respectively. It is benefitting from that the Type-II heterojunction structure formed by the coupling of mesoporous SnO<sub>2</sub> and SnS<sub>2</sub> has a synergistic effect, which reduces the band gap and improves the photocatalytic activity. Furthermore, this study revealed that the reaction rate constant of SnO<sub>2</sub>/SnS<sub>2</sub> photocatalytic degradation of sulfonamides increased with the increase of temperature, which belonged to the zero-order reaction with the apparent activation energy of <span>(:1.201 times 10^{4})</span>J·mol<sup>− 1</sup>. Finally, the photocatalytic stability and reusability of SnO<sub>2</sub>/SnS<sub>2</sub> were further confirmed through 5 cycles of photocatalytic degradation experiments. This study provides new insights for the development of heterojunction photocatalysts with mesoporous structure, and provide new ideas for photocatalytic technology in antibiotic degradation.</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 2","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142912930","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
Production of High Calorific Biodiesel from Oats Lipid Using Cu–ZnO–Al2O3 Catalyst 用Cu-ZnO-Al2O3催化剂从燕麦脂中生产高热量生物柴油
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-01-02 DOI: 10.1007/s10562-024-04853-1
V. N. Nandini Devi, N. Padmamalini, A. Asha
{"title":"Production of High Calorific Biodiesel from Oats Lipid Using Cu–ZnO–Al2O3 Catalyst","authors":"V. N. Nandini Devi,&nbsp;N. Padmamalini,&nbsp;A. Asha","doi":"10.1007/s10562-024-04853-1","DOIUrl":"10.1007/s10562-024-04853-1","url":null,"abstract":"<div><p>Expired, non-edible forms of oats which are considered as trash have the potential to enable biodiesel production at larger scale without competing for any requirements. The process of producing biodiesel has been examined step-by-step, begining with the conversion of oat lipids to FAME. Using DME in a batch reactor, the SCE (super critical carbon dioxide extraction) method was used to extract lipids from oats. The fatty acid profile shows the abundance of C18 compounds from lipid extraction. Catalyst used for the biodiesel production was ZnO–Al<sub>2</sub>O<sub>3</sub>; in which varied loadings of copper was carried out. Utilizing XRD, FTIR, N<sub>2</sub> sorption, TPD, and SEM examination, the catalyst was characterized. A catalyst with an alcohol ratio of 2:10, a flow rate of 4 ml per hour, 300 mg of oats, and 15% of copper-loaded catalyst was found to be the most effective combination for converting lipids into biodiesel while also exhibiting high selectivity and yield. GCMS spectrum indicates the abundance of C18 fractions at 22.34 min with peak area of 53.69%. The kinetic study such as Arrhenius plot for pure biodiesel and biodiesel blend shows that pure biodiesel at constant temperature shows rate maximum. Engine analysis characteristics such as brake power, torque, BTE, CO, and NO emission data demonstrated the performance of pure biodiesel that was obtained in good yield from oat lipid.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 2","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142912895","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
Ceramic Fiber Paper-Based Manganese Oxides Catalyst for Room Temperature Formaldehyde Oxidation 陶瓷纤维纸基锰氧化物室温甲醛氧化催化剂
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2025-01-02 DOI: 10.1007/s10562-024-04898-2
Xiuxiu Wang, Jiawei Zhao, Chuanjun Zhao, Yexin Zhang, Sakil Mahmud, Jian Zhang
{"title":"Ceramic Fiber Paper-Based Manganese Oxides Catalyst for Room Temperature Formaldehyde Oxidation","authors":"Xiuxiu Wang,&nbsp;Jiawei Zhao,&nbsp;Chuanjun Zhao,&nbsp;Yexin Zhang,&nbsp;Sakil Mahmud,&nbsp;Jian Zhang","doi":"10.1007/s10562-024-04898-2","DOIUrl":"10.1007/s10562-024-04898-2","url":null,"abstract":"<div><p>The catalytic removal of trace formaldehyde (HCHO) at ambient temperatures is crucial for improving indoor air quality, necessitating the use of monolithic catalysts over traditional powder forms for real-world applications. In this study, an aluminosilicate fiber-woven ceramic filter paper (CFP) was selected as the substrate, onto which a Mn<sub>2</sub>O<sub>3</sub> catalyst was in situ coated via a combustion method utilizing Mn(NO<sub>3</sub>)<sub>2</sub> as the oxidant and glycine as the fuel. The resulting monolithic Mn<sub>2</sub>O<sub>3</sub>/CFP catalyst was compared to a MnO<sub>2</sub>/CFP catalyst, prepared by direct decomposition of Mn(NO<sub>3</sub>)<sub>2</sub> on the same substrate. The Mn<sub>2</sub>O<sub>3</sub>/CFP catalyst exhibited superior characteristics for HCHO oxidation, including a more porous architecture, higher redox capability, and an abundance of surface-active oxygen species with enhanced mobility of surface lattice oxygen. These features enabled the Mn<sub>2</sub>O<sub>3</sub>/CFP catalyst to achieve significantly higher HCHO conversion at room temperature (90%) compared to the MnO<sub>2</sub>/CFP catalyst (21%). Additionally, in a durability test carried out in a mode of dynamic flow at room temperature, the Mn<sub>2</sub>O<sub>3</sub>/CFP catalyst maintained a high HCHO conversion rate of 66% over 11 days, demonstrating its potential for practical indoor air purification applications.</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 2","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142913042","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
Kinetics of Benzene Hydroalkylation over Bifunctional Catalyst Ru/Hβ 双功能催化剂Ru/Hβ上苯加氢烷基化反应动力学
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2024-12-15 DOI: 10.1007/s10562-024-04897-3
Zhongjie Chen, Weidi Dai, Weijie Sun, Jian Wu, Xia Yuan
{"title":"Kinetics of Benzene Hydroalkylation over Bifunctional Catalyst Ru/Hβ","authors":"Zhongjie Chen,&nbsp;Weidi Dai,&nbsp;Weijie Sun,&nbsp;Jian Wu,&nbsp;Xia Yuan","doi":"10.1007/s10562-024-04897-3","DOIUrl":"10.1007/s10562-024-04897-3","url":null,"abstract":"<div><p>The bifunctional catalyst Ru/Hβ was prepared by equal volume impregnation method and applied to the study of the kinetics of benzene hydroalkylation reaction. The reaction order of 1 for benzene and 1.94 for H<sub>2</sub> (<span>({P}_{{H}_{2}}le 3text{ MPa})</span>) was obtained by fitting the kinetic experimental data first. Then a kinetic model conforming to the Eley–Rideal (E–R) mechanism was developed based on the types of adsorbates on different active centers of the solid catalyst, and the main mechanism was that the benzene in the adsorbed state was partially hydrogenated to produce cyclohexene, which was not desorbed from the active centers. Some of it was further hydrogenated to produce cyclohexane, and some was alkylated with benzene in the bulk phase to produce cyclohexylbenzene. The reaction rate control step was the alkylation of benzene and cyclohexene. The model parameters were calculated using a genetic algorithm. The model was tested to be able to describe the reaction mechanism of benzene hydroalkylation well and to provide guidance for process optimization.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div><p>Benzene hydroalkylation is a key starting step in the process of preparing phenol by the cyclohexylbenzene method instead of HOCK method, and there is a great lack of related kinetic studies. In this paper, the bifunctional catalyst Ru/Hβ was prepared and applied to the study of the kinetics of benzene hydroalkylation reaction. A kinetic model conforming to the Eley-Rideal (E-R) mechanism was developed. The model parameters were calculated using a genetic algorithm. The model was tested to be able to describe the reaction mechanism of benzene hydroalkylation well and to provide guidance for process optimization.</p></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142821389","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
Correction to: Synthesis and Characterization of AlPO4-18 Supported Mesoporous and Crystalline β-Mo2C, Ni3C, and WC Nanoparticles 修正:AlPO4-18负载介孔和晶体β-Mo2C, Ni3C和WC纳米颗粒的合成和表征
IF 2.3 4区 化学
Catalysis Letters Pub Date : 2024-12-13 DOI: 10.1007/s10562-024-04896-4
Zinnabu T. Redda, Daniel Brennecke, Carsten Prinz, Abubeker Yimam, Mirko Barz, Stefen Kadow, Asnakech Laß-Seyoum
{"title":"Correction to: Synthesis and Characterization of AlPO4-18 Supported Mesoporous and Crystalline β-Mo2C, Ni3C, and WC Nanoparticles","authors":"Zinnabu T. Redda,&nbsp;Daniel Brennecke,&nbsp;Carsten Prinz,&nbsp;Abubeker Yimam,&nbsp;Mirko Barz,&nbsp;Stefen Kadow,&nbsp;Asnakech Laß-Seyoum","doi":"10.1007/s10562-024-04896-4","DOIUrl":"10.1007/s10562-024-04896-4","url":null,"abstract":"","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10562-024-04896-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142811265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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