Catalysis Science & Technology最新文献_第6页

Enhanced low-temperature CO2 methanation over a Ni-based catalyst supported on La2O3–Al2O3 composite supports† La2O3-Al2O3复合载体†上镍基催化剂的低温CO2甲烷化增强

IF 4.2 3区化学

Catalysis Science & Technology Pub Date : 2025-07-08 DOI: 10.1039/d5cy00413f

Longhao Xu , Wenhao Zhang , Liang Shen , Minghui Zhu , Yi-Fan Han

{"title":"Enhanced low-temperature CO2 methanation over a Ni-based catalyst supported on La2O3–Al2O3 composite supports†","authors":"Longhao Xu , Wenhao Zhang , Liang Shen , Minghui Zhu , Yi-Fan Han","doi":"10.1039/d5cy00413f","DOIUrl":"10.1039/d5cy00413f","url":null,"abstract":"<div><div>Despite the substantial efforts in the conversion of carbon dioxide (CO2) into high value-added products, directly transforming CO2 into CH4 at low temperatures still poses a formidable challenge. In this study, we report a bottom-up strategy to synthesize supported Ni catalysts on a doped Al2O3 support. LaAl mixed oxide was first synthesized via a co-precipitation method, followed by Ni species loaded using a deposition precipitation method. The CO2 conversion of the Ni/LaAl catalyst is found to be greatly enhanced, two times higher than that of the Ni/Al2O3 catalyst at 250 °C. The characterization results show that the introduction of La promotes the dispersion of Ni, reduces the reduction temperature of NiO and facilitates the adsorption of CO2 by increasing the basic sites. Temperature-programmed reduction with H2 demonstrated that La2O3 promotes the reducibility of NiO. Furthermore, kinetic analysis, in situ DRIFTS and CO methanation tests evidenced that La2O3 promotes the activation of CO2 and accelerates the CO hydrogenation step.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 16","pages":"Pages 4741-4749"},"PeriodicalIF":4.2,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144810733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Cobalt-doped MIL-88A anchored on a cellulose filter paper: a recyclable flow-through catalyst for peroxymonosulfate activation during the degradation of organic dyes† 固定在纤维素滤纸上的钴掺杂MIL-88A：有机染料降解过程中过氧单硫酸盐活化的可回收流动催化剂

IF 4.2 3区化学

Catalysis Science & Technology Pub Date : 2025-07-08 DOI: 10.1039/d5cy00412h

Yaru Li , Jing-jing Shao , Thomas L. Eberhardt , Hui Pan

{"title":"Cobalt-doped MIL-88A anchored on a cellulose filter paper: a recyclable flow-through catalyst for peroxymonosulfate activation during the degradation of organic dyes†","authors":"Yaru Li , Jing-jing Shao , Thomas L. Eberhardt , Hui Pan","doi":"10.1039/d5cy00412h","DOIUrl":"10.1039/d5cy00412h","url":null,"abstract":"<div><div>To demonstrate the effective use of a heterogeneous catalyst for the treatment of wastewater in a flowing state, we synthesized a metal–organic framework, MIL-88A, in situ on a filter paper. A cobalt doping modification yielded a composite catalyst, Co-doped MIL-88A, on a filter paper (Co-M88A-FP), which was then used to activate peroxymonosulfate (PMS). Characterizations of Co-M88A-FP catalyst revealed that the morphology and structure of MIL-88A did not change when synthesized on the filter paper; however, the surface of MIL-88A became rough and amorphous after Co doping. The Co-M88A-FP/PMS catalytic system exhibited highly efficient degradation of rhodamine B (a test pollutant dye) and appeared to be adaptable to continuous flow conditions. XPS, EPR and radical scavenging test results indicated that singlet oxygen was the reactive species that mainly contributed to the degradation of the test pollutant dye. Therefore, it was revealed that electron-rich substances with low steric hindrance would be degraded more quickly by the Co-M88A-FP/PMS system.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 16","pages":"Pages 4838-4849"},"PeriodicalIF":4.2,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144810741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Designing an S-scheme heterojunction based on MOF-808-NH2 and TpTt-COF for enhanced photocatalytic degradation of alkylphenols under visible light† 基于MOF-808-NH2和TpTt-COF的s型异质结设计用于可见光下增强烷基酚光催化降解

IF 4.2 3区化学

Catalysis Science & Technology Pub Date : 2025-07-08 DOI: 10.1039/d5cy00520e

Haiyue Yuan , Jianhui Zhu , Desheng Liu , Mengyao Wang , Siyue Zhu , Xinping Hu , Yongqiang Ma , Yan Wang

{"title":"Designing an S-scheme heterojunction based on MOF-808-NH2 and TpTt-COF for enhanced photocatalytic degradation of alkylphenols under visible light†","authors":"Haiyue Yuan , Jianhui Zhu , Desheng Liu , Mengyao Wang , Siyue Zhu , Xinping Hu , Yongqiang Ma , Yan Wang","doi":"10.1039/d5cy00520e","DOIUrl":"10.1039/d5cy00520e","url":null,"abstract":"<div><div>Alkylphenols (APs), as endocrine disruptors (EDCs), pose potential threats to aquatic organisms and human health. Their photodegradation efficiency decreases with shorter alkyl chains and branched configurations. MOF-808-NH2 and TpTt-COFs, serving as photocatalysts, exhibit limited degradation capabilities and suffer from time-consuming and complex traditional synthesis methods. Herein, an S-scheme heterojunction based on MOF-808-NH2 and TpTt-COFs was synthesized using a time-efficient one-pot hydrothermal method. The findings of this study indicate that the loaded structure (MOF-808-NH2)2/(TpTt-COF)8 (with a weight ratio of 2 : 8) demonstrates over 97% effective photocatalytic removal of six APs (within 120 min), along with excellent stability and photocatalytic performance and broad applicability under visible light. The degradation rate of Zr-MOF2/TpTt-COF8 is 2.47 times higher than that of MOF-808-NH2. The mechanism of this photocatalyst was further verified as an S-scheme heterojunction electron-transfer model, facilitating the efficient separation of charge carriers. Additionally, the degradation pathway was predicted, showing that the toxicity of degradation products to organisms gradually decreases. This study not only provides a feasible approach for the efficient degradation of APs in environmental water, demonstrating advantages and improvements over previous research findings, but also offers new insights for the design of novel visible-light photocatalysts.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 16","pages":"Pages 4850-4865"},"PeriodicalIF":4.2,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144810742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Cost-effective chiral auxiliary-assisted remote asymmetric C(sp3)–H alkylation of hydroxamic acid derivatives with glycine derivatives† 低成本手性助剂辅助羟基肟酸衍生物与甘氨酸衍生物的远端不对称C(sp3) -H烷基化反应

IF 4.2 3区化学

Catalysis Science & Technology Pub Date : 2025-07-08 DOI: 10.1039/d5cy00604j

Zhongzhen Yang , Li Li , Jian Chen , Jinyu Hou , Hongying Fan , Xue Zhang , Guanghui Lv , Yong Wu

引用次数: 0

Dirhodium(ii,ii) catalyst optimisation for chemoselective hydroaminomethylation: towards efficient amine synthesis† 化学选择性氢胺甲基化的Dirhodium（ii,ii）催化剂优化：迈向高效胺合成

IF 4.2 3区化学

Catalysis Science & Technology Pub Date : 2025-07-08 DOI: 10.1039/d5cy00630a

Stephen de Doncker , Gregory S. Smith , Siyabonga Ngubane

{"title":"Dirhodium(ii,ii) catalyst optimisation for chemoselective hydroaminomethylation: towards efficient amine synthesis†","authors":"Stephen de Doncker , Gregory S. Smith , Siyabonga Ngubane","doi":"10.1039/d5cy00630a","DOIUrl":"10.1039/d5cy00630a","url":null,"abstract":"<div><div>The optimisation of a suitable mixed ligand dirhodium(ii,ii) catalyst for chemoselective hydrogenation of imines and enamines was carried out using four previously synthesised heteroleptic dirhodium(ii,ii) acetato-bipyridyl complexes (). As such, optimised reaction conditions incorporating changes in temperature, H2 pressure, catalyst loading, and reaction time were applied to model substrates to determine the selectivity towards target amine product(s). The title complexes were evaluated under the optimised conditions for the hydrogenation reaction with the trifluoromethyl substituted complex () showing the highest hydrogenation activity for the series. Varying the partial pressure of CO relative to H2 in the syngas mixture to optimise the conversion of olefin substrate to form the target amine products was then applied with catalyst precursor (). The amine reactants were varied, and the use of aromatic amines resulted in low conversion to target products, while aliphatic amine substrates showed good to excellent production of both secondary and tertiary amines in combination with a range of olefins. With the optimised catalyst and reaction conditions in hand, the hydroaminomethylation of a suitable substrate using catalyst precursor to afford two analogues of a known opioid analgesic, Tramadol® was carried out.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 16","pages":"Pages 4824-4837"},"PeriodicalIF":4.2,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144810740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Density functional theory calculation of first-row transition metals anchored on pyridine-based graphynes as single-atom catalysts for electrocatalytic CO2 reduction† 吡啶基石墨烯上第一排过渡金属作为电催化CO2还原单原子催化剂的密度泛函理论计算

IF 4.2 3区化学

Catalysis Science & Technology Pub Date : 2025-07-08 DOI: 10.1039/d5cy00545k

Xin Li , Decheng Peng , Yuhang Wang , Congcong Liang , Qiang Wang , Jiangang Chen , Liangfu Zhao

{"title":"Density functional theory calculation of first-row transition metals anchored on pyridine-based graphynes as single-atom catalysts for electrocatalytic CO2 reduction†","authors":"Xin Li , Decheng Peng , Yuhang Wang , Congcong Liang , Qiang Wang , Jiangang Chen , Liangfu Zhao","doi":"10.1039/d5cy00545k","DOIUrl":"10.1039/d5cy00545k","url":null,"abstract":"<div><div>The electrocatalytic reduction of CO2 to produce chemicals or fuels is widely regarded as an effective strategy for achieving carbon neutrality. Single-atom catalysts have garnered significant attention owing to their exceptional atomic utilization efficiency. In this study, we employed spin-polarized density functional theory to investigate the electrocatalytic reduction of CO2 on first-row transition metals anchored on pyridine-based graphynes (TM@pdGYs). Analysis of binding energies, cohesion energies and formation energies indicates their high structure stability and synthesis feasibility. The results of electronic structure analysis showed a robust interaction between metal atoms and pdGY, with the forming of stable covalent bonds. Competitive analysis with the hydrogen evolution reaction (HER) indicates superior selectivity for CO2 reduction over the HER for all the TM@pdGYs. We also constructed Gibbs free energy level diagrams for the production of four C1 products by each catalyst, revealing that CH4 and HCOOH are the most favorable products. Notably, Cr/Fe/Co/Zn@pdGY exhibits excellent CO2 reduction performance with low limiting potentials (−0.13 V to −0.38 V), enabling further decrease in ΔGmax under applied external potential, and possibly rendering the reaction completely spontaneous. These findings suggest that TM@pdGYs represent a promising class of electrocatalysts for CO2 reduction.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 16","pages":"Pages 4672-4683"},"PeriodicalIF":4.2,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144810727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Selective oxidation of 2,3,6-trimethylphenol into 2,3,5-trimethyl-1,4-benzoquinone with dioxygen over heterogeneous Co catalysts† 非均相Co催化剂上2,3,6-三甲基苯酚选择性氧化制备2,3,5-三甲基-1,4-苯醌

IF 4.2 3区化学

Catalysis Science & Technology Pub Date : 2025-07-08 DOI: 10.1039/d5cy00516g

Mengjing Han , Bairui Guo , Zhengzhuo Qin , Xu Chen , Zhongtian Du , Changhai Liang

{"title":"Selective oxidation of 2,3,6-trimethylphenol into 2,3,5-trimethyl-1,4-benzoquinone with dioxygen over heterogeneous Co catalysts†","authors":"Mengjing Han , Bairui Guo , Zhengzhuo Qin , Xu Chen , Zhongtian Du , Changhai Liang","doi":"10.1039/d5cy00516g","DOIUrl":"10.1039/d5cy00516g","url":null,"abstract":"<div><div>The selective oxidation of 2,3,6-trimethylphenol is an important approach to prepare 2,3,5-trimethyl-1,4-benzoquinone, which is a key intermediate for the synthesis of vitamin E. Previous studies have shown that Co–N–C materials prepared through a pyrolysis process at temperatures between 250 and 400 °C exhibit high catalytic activity for the oxidation of 2,3,6-trimethylphenol, rather than the typical range of 600 to 1000 °C. In addition to these unusual findings, activated carbon-supported Co(Phen)2 after pyrolysis showed significantly lower catalytic activity compared to its unsupported counterpart, and the pyrolyzed Co(Salen)2 complex did not display the same high catalytic activity as the homogeneous counterpart. The presence of pyridinic nitrogen (N) on the surface, rather than pyrrolic N, is closely associated with the efficient formation of 2,3,5-trimethyl-1,4-benzoquinone. Active catalytic sites with highly disordered structures are formed alongside the first apparent weight loss during pyrolysis. These results provide important insights into the oxidation of phenolic compounds and catalyst design.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 16","pages":"Pages 4816-4823"},"PeriodicalIF":4.2,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144810739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Promising single-atom catalysts for environmental energy material applications: overview and perspectives 环境能源材料中有前景的单原子催化剂：综述与展望

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-07-03 DOI: 10.1039/D5CY00565E

Cunzhi Qin, Syama Lenus, Douqin Ma, Tingting Liang, Hemin Zhang, Bin Zhang and Hang Liu

{"title":"Promising single-atom catalysts for environmental energy material applications: overview and perspectives","authors":"Cunzhi Qin, Syama Lenus, Douqin Ma, Tingting Liang, Hemin Zhang, Bin Zhang and Hang Liu","doi":"10.1039/D5CY00565E","DOIUrl":"https://doi.org/10.1039/D5CY00565E","url":null,"abstract":"In recent years, the consumption of renewable energy, utilization of green energy and practicability regarding carbon neutrality have been evidently shown to be dependent on green electrocatalysts. In particular, single-atom catalysts (SACs) stand out among the trending catalysts in the fields associated with the electrical industry, such as the hydrogen evolution reaction (HER), oxygen evolution reaction (OER), oxygen reduction reaction (ORR), CO2 reduction reaction (CO2RR), nitrogen reduction reaction (N2RR), CO oxidation, zinc-air batteries (ZABs), and lithium-sulfur batteries (LSBs). Advantageously, atomically dispersed metal catalysts, compared with ordinary nanoparticle catalysts, exhibit higher atomic efficiency, resulting in a significant increase in the surface free energy, unsaturated coordination environment, quantum size effect, interaction of metal carriers, and other properties. Therefore, SACs usually show excellent catalytic activity. However, maintaining high reactivity and stability with considerable metal loading still remains a serious challenge. Herein, we reviewed the developments, types, preparation methods, and applications of SACs. Finally, in the summary, the main challenges and ideologically relevant future perspectives are briefly recommended towards the development of SAC-based catalysts.","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 15","pages":" 4352-4379"},"PeriodicalIF":4.4,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144714595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

NiFe layered double hydroxide with intercalated fluorosilicate anions for industrial-level alkaline seawater oxidation† 含氟硅酸阴离子的NiFe层状双氢氧化物用于工业碱性海水氧化†

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-07-03 DOI: 10.1039/D5CY00677E

Wenlong Jiang, Zixiao Li, Shengjun Sun, Yongsong Luo, Fatma A. Ibrahim, Mohamed S. Hamdy, Imran Shakir, Wenting Li, Jianming Hu, Xuefei Liu and Xuping Sun

{"title":"NiFe layered double hydroxide with intercalated fluorosilicate anions for industrial-level alkaline seawater oxidation†","authors":"Wenlong Jiang, Zixiao Li, Shengjun Sun, Yongsong Luo, Fatma A. Ibrahim, Mohamed S. Hamdy, Imran Shakir, Wenting Li, Jianming Hu, Xuefei Liu and Xuping Sun","doi":"10.1039/D5CY00677E","DOIUrl":"https://doi.org/10.1039/D5CY00677E","url":null,"abstract":"Seawater electrolysis for hydrogen production is efficient and promising, but chloride ions (Cl−) cause severe anode corrosion, limiting its potential. In this study, we present the intercalation of fluorosilicate anions into NiFe layered double hydroxide nanosheet arrays on Ni foam (SiF62−-NiFe LDH/NF) as an industrial-level alkaline seawater oxidation catalyst. SiF62−-NiFe LDH/NF achieves a current density of 1000 mA cm−2 at an overpotential of 371 mV and maintains good stability for 1000 h. It also exhibits robust stability at higher current densities of 1.5 and 2 A cm−2. In situ Raman spectroscopy confirms that SiF62− promotes the generation of γ-NiOOH and repels Cl−, demonstrating excellent tolerance under extreme conditions.","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":" 15","pages":" 4386-4391"},"PeriodicalIF":4.4,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144714597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Non-oxidative dehydrogenation of methanol to dimethoxymethane over Ag/Hβ zeolite bifunctional catalyst† Ag/Hβ沸石双功能催化剂上甲醇非氧化脱氢制二甲氧基甲烷

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-06-23 DOI: 10.1039/D5CY00544B

Natalia Simitsis, Felix Egger, Mirijam Zobel, Chalachew Mebrahtu and Regina Palkovits

引用次数: 0