Journal of Catalysis最新文献_第10页

New ruthenium(II) isocyanide catalysts for the transfer hydrogenation of ethyl levulinate to γ-valerolactone in C2-C6 alcohols 在 C2-C6 脂肪醇中将乙酰丙酸乙酯转移氢化为 γ-戊内酯的新型异氰化钌催化剂

IF 6.5 1区化学

Journal of Catalysis Pub Date : 2024-09-15 DOI: 10.1016/j.jcat.2024.115761

Lorenzo Biancalana , Nicola Di Fidio , Domenico Licursi , Stefano Zacchini , Alessia Cinci , Anna Maria Raspolli Galletti , Fabio Marchetti , Claudia Antonetti

{"title":"New ruthenium(II) isocyanide catalysts for the transfer hydrogenation of ethyl levulinate to γ-valerolactone in C2-C6 alcohols","authors":"Lorenzo Biancalana , Nicola Di Fidio , Domenico Licursi , Stefano Zacchini , Alessia Cinci , Anna Maria Raspolli Galletti , Fabio Marchetti , Claudia Antonetti","doi":"10.1016/j.jcat.2024.115761","DOIUrl":"10.1016/j.jcat.2024.115761","url":null,"abstract":"<div><div>Transfer hydrogenation (TH) processes are receiving great attention for biomass valorization and ruthenium(II) complexes are renowned TH catalysts both on laboratory and industrial scale. Only a few homogeneous catalytic precursors are available in the literature for the TH of ethyl levulinate (EL) to γ-valerolactone (GVL). Herein, starting from simple, commercially available isocyanides, two classes of air-stable ruthenium(II) complexes were synthesized and tested as catalytic precursors. First, an optimized preparation of Ru(II) p-cymene isocyanide complexes was developed. Then, the thermally induced p-cymene/DMSO substitution gave access to unprecedented ruthenium isocyanide-DMSO complexes. All the complexes were characterized and tested in TH of EL to GVL showing promising performances, adopting 2-propanol as hydrogen donor, a low catalyst (Ru) and co-catalyst (KOH) amount, working under microwave heating for 1 h at 150 °C. The most selective systems were also successfully tested with different biomass-derived alcohols, including 2-butanol. Finally, the recycling of the best catalyst was also investigated, thus improving the efficiency of the entire process.</div></div>","PeriodicalId":346,"journal":{"name":"Journal of Catalysis","volume":"439 ","pages":"Article 115761"},"PeriodicalIF":6.5,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0021951724004743/pdfft?md5=673be9fd9f252c49bcf6d3a0636f7599&pid=1-s2.0-S0021951724004743-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142315599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Cinchona alkaloids-derived chiral ligands for Mn-catalyzed ATH of ketones: Improvement of enantioselectivity through π-π stacking-induced hydrogen bond 用于锰催化酮类化合物 ATH 的金鸡纳生物碱手性配体：通过π-π堆叠氢键提高对映体选择性

IF 6.5 1区化学

Journal of Catalysis Pub Date : 2024-09-14 DOI: 10.1016/j.jcat.2024.115758

Lin Zhang , Pinli Dai , Xin Meng, Yu Tian, Xuan Zhou, Wenchang Gou, Yunhuan Wang, Chun Li

引用次数: 0

Nickel-catalyzed directed hydrodefluorination by using water as a hydride source 以水为氢化物源的镍催化定向氢氟化反应

IF 6.5 1区化学

Journal of Catalysis Pub Date : 2024-09-14 DOI: 10.1016/j.jcat.2024.115754

Juanjuan Zhang , Wen-Tao Dong , Baoling Huang , Xuran Liu , Wenjian Wang , Lianxiang Luo , Shao-Fei Ni , Weigao Hu , Jia Zheng

引用次数: 0

Porous organic polymer with free carboxylic acids (Carboxy-POP) as an expedient heterogeneous catalyst for transamidation/transimidation of multifarious amides, thioamides, imides and urea 含游离羧酸的多孔有机聚合物（羧基-持久性有机污染物）作为一种便捷的异相催化剂，可用于多种酰胺、硫酰胺、酰亚胺和脲的反氨化/反亚胺化反应

IF 6.5 1区化学

Journal of Catalysis Pub Date : 2024-09-14 DOI: 10.1016/j.jcat.2024.115755

Alka Karn , Navin Yadav , Jarugu Narasimha Moorthy

{"title":"Porous organic polymer with free carboxylic acids (Carboxy-POP) as an expedient heterogeneous catalyst for transamidation/transimidation of multifarious amides, thioamides, imides and urea","authors":"Alka Karn , Navin Yadav , Jarugu Narasimha Moorthy","doi":"10.1016/j.jcat.2024.115755","DOIUrl":"10.1016/j.jcat.2024.115755","url":null,"abstract":"<div>The exceptional attributes of porous organic polymers (POPs) such as high physicochemical stability, intrinsic microporosity, and customised access from simple organic building blocks render them highly suitable as catalytic nanosized reactors. These materials can be engineered in a ‘bottom-up’ fashion by integrating catalytic components into the polymeric structures through facile synthesis based on rationally designed building blocks and judicious selection of the polymerization reactions. Herein, we report that a POP adorned by free carboxylic acid functionalities (Carboxy-POP) on its surface works remarkably as a heterogeneous catalyst for metal-free transamidation, a fundamentally important transformation, of diverse unactivated carboxamides and thiocarboxamides with aliphatic, aromatic and cyclic amines. The protocol is also shown to be applicable for the transimidation of challenging substrates such as phthalimides and the transamidation of urea, providing the corresponding products in good to excellent isolated yields. The significant highlights of this methodology include efficiency, ease of workup, facile separation, and recyclability of the catalyst; the latter is demonstrated up to 12 cycles.</div>","PeriodicalId":346,"journal":{"name":"Journal of Catalysis","volume":"439 ","pages":"Article 115755"},"PeriodicalIF":6.5,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142272787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Operando spectroscopic studies on redox mechanism for CO2 hydrogenation to CO on In2O3 catalysts 在 In2O3 催化剂上将 CO2 加氢转化为 CO 的氧化还原机制的运算光谱研究

IF 6.5 1区化学

Journal of Catalysis Pub Date : 2024-09-14 DOI: 10.1016/j.jcat.2024.115762

Lingcong Li , Duotian Chen , Akihiko Anzai , Ningqiang Zhang , Yikun Kang , Yucheng Qian , Pengfei Du , Abdellah Ait El Fakir , Takashi Toyao , K. Shimizu

{"title":"Operando spectroscopic studies on redox mechanism for CO2 hydrogenation to CO on In2O3 catalysts","authors":"Lingcong Li , Duotian Chen , Akihiko Anzai , Ningqiang Zhang , Yikun Kang , Yucheng Qian , Pengfei Du , Abdellah Ait El Fakir , Takashi Toyao , K. Shimizu","doi":"10.1016/j.jcat.2024.115762","DOIUrl":"10.1016/j.jcat.2024.115762","url":null,"abstract":"<div>The catalytic activities of In2O3 catalysts with different surface area for both cyclic unsteady-state (transient) and steady-state reverse water–gas shift (RWGS) reactions were systemically investigated. The initial CO formation rates during CO2-oxidation of the H2-reduced In2O3 catalysts were close to the CO formation rates in steady-state RWGS conditions at 325 °C, suggesting a redox mechanism for the steady-state RWGS reaction over the In2O3 catalysts. Transient kinetics for the In3+/In+ redox and products (H2O, CO) formation during the cyclic H2-reduction and CO2-oxidation of In2O3 under periodic feeding of H2 ↔ CO2 were studied by time-resolved operando UV–vis and In K-edge X-ray absorption experiments at 325 °C. During the H2-reduction, the surface In3+-O species was reduced to produce H2O and In+-□ (□: oxygen vacancy). Subsequent re-oxidation of the In+-□ by CO2 gave CO and the In3+-O species. The transient CO formation rates were close to the consumption rates of In+-□ under CO2, providing a quantitative evidence on the redox mechanism for unsteady-state RWGS reaction over In2O3. These results indicate that the unsteady-state and steady-state RWGS reactions are primary driven by the In3+/In+ redox mechanism. Kinetic results show that the reoxidation step is the rate-limiting step in the steady-state RWGS reaction.</div>","PeriodicalId":346,"journal":{"name":"Journal of Catalysis","volume":"439 ","pages":"Article 115762"},"PeriodicalIF":6.5,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142272786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Solid-state synthesis of lead-free perovskite Cs3Bi2Br9 for photocatalytic O2-involved coupling of aldehydes or alcohols to anhydrides 固态合成无铅过氧化物 Cs3Bi2Br9，用于光催化 O2 参与的醛或醇与酸酐的偶联反应

IF 6.5 1区化学

Journal of Catalysis Pub Date : 2024-09-14 DOI: 10.1016/j.jcat.2024.115750

Qiangwen Fan , Dawei Liu , Yuan Hu , Qiuyun Huang , Saijin Xiao , Huijun Ren , Haibo Zhu , Zongbo Xie

引用次数: 0

C–H/C–H Aromative carbonylation of diarylalkynes enabled palladium-catalyzed by 6-endo-dig carbocyclization 在钯催化下通过 6-endo-dig 碳环化实现二芳基炔的芳香羰基化

IF 6.5 1区化学

Journal of Catalysis Pub Date : 2024-09-14 DOI: 10.1016/j.jcat.2024.115757

Yuanyuan Yue , Qimin Tu , Jianhang Zhang , Huihui Yin , Zhihui Hou , Heng Zhang , Hong Yi , Jianming Liu

引用次数: 0

Cobalt catalyzed condensation interrupted selective transfer hydrogenation using methanol 钴催化甲醇缩合中断选择性转移加氢

IF 6.5 1区化学

Journal of Catalysis Pub Date : 2024-09-14 DOI: 10.1016/j.jcat.2024.115759

Sadhan Dey , Seema D. Thakur , Anirban Sau , Dibyajyoti Panja , Trishit Roy , Jinqiang Zhang , Harshini V. Annadata , Sabuj Kundu

{"title":"Cobalt catalyzed condensation interrupted selective transfer hydrogenation using methanol","authors":"Sadhan Dey , Seema D. Thakur , Anirban Sau , Dibyajyoti Panja , Trishit Roy , Jinqiang Zhang , Harshini V. Annadata , Sabuj Kundu","doi":"10.1016/j.jcat.2024.115759","DOIUrl":"10.1016/j.jcat.2024.115759","url":null,"abstract":"<div><div>Utilizing methanol transfer hydrogenation (TH) of nitroarene and α,β-unsaturated ketones has significant challenges as it mostly produced the corresponding N/C-methylated and over-hydrogenated products. Hence, selective synthesis of amines and saturated ketones from nitroarene and α,β-unsaturated ketones respectively employing methanol as hydrogen source is an exciting area of research. Additionally, development of air and moisture-stable reusable cobalt based catalytic system for the dehydrogenation of methanol is a fascinating area to investigate. In this prospect, we disclosed a single atom cobalt catalysed condensation interrupted selective TH of a library of various nitroarenes and α,β-unsaturated ketones using methanol as a hydrogen source. A series of pharmaceutically important drug molecules was synthesized to establish the synthetic applicability of this methodology. Several control experiments were carried out to understand the reaction mechanism. Notably, this catalyst was recycled up to six times without considerable loss of its catalytic activity.</div></div>","PeriodicalId":346,"journal":{"name":"Journal of Catalysis","volume":"439 ","pages":"Article 115759"},"PeriodicalIF":6.5,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142315598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Microenvironment modulation of Fe-porphyrinic metal–organic frameworks for CO2 photoreduction 用于二氧化碳光还原的 Fe-卟啉金属有机框架的微环境调控

IF 6.5 1区化学

Journal of Catalysis Pub Date : 2024-09-13 DOI: 10.1016/j.jcat.2024.115745

Xue Zhao , Chen-Xi Tang , Qiang Xu , Heng Rao , Dong-Ying Du , Ping She , Jun-Sheng Qin

{"title":"Microenvironment modulation of Fe-porphyrinic metal–organic frameworks for CO2 photoreduction","authors":"Xue Zhao , Chen-Xi Tang , Qiang Xu , Heng Rao , Dong-Ying Du , Ping She , Jun-Sheng Qin","doi":"10.1016/j.jcat.2024.115745","DOIUrl":"10.1016/j.jcat.2024.115745","url":null,"abstract":"<div>Photocatalytic CO2 reduction to fuels and chemicals is a promising pathway towards carbon resource recovery. Herein, three isomorphic Fe-porphyrinic MOFs, Zr6O4(OH)4(Fe-TCPP)3 (MOF-525, Fe-TCPP = iron 5,10,15,20-tetra(4-carboxyphenyl)-porphyrin), Zr6O4(OH)4(Fe-TCPP-NO2)3 (MOF-525-NO2, Fe-TCPP-NO2 = iron 5,10,15,20-tetra(2-nitro-4-carboxyphenyl)-porphyrin), and Zr6O4(OH)4(Fe-TCBPP-NO2)3 (MOF-526-NO2, Fe-TCBPP-NO2 = iron 5,10,15,20-tetra[4-(4′-carboxyphenyl)-2-nitrophenyl]-porphyrin) were synthesized and employed as photocatalysts for CO2 reduction. Among them, MOF-525-NO2 exhibited the highest catalytic activity with CO and H2 yields of 10.36 and 0.46 mmol·g−1 without any photosensitizer under visible light. Mechanism investigations suggested that the micro-environments of these MOFs were adjusted by introducing porphyrinic fragments with different lengths and functional groups, resulting in stronger CO2 affinity, faster photocurrent response, and efficient photogenerated electron-hole separation and transfer, which finally promoted the efficiency for photocatalytic CO2 reduction.</div>","PeriodicalId":346,"journal":{"name":"Journal of Catalysis","volume":"439 ","pages":"Article 115745"},"PeriodicalIF":6.5,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142232884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Diverse effects of ferromagnetic-paramagnetic phase transition on the activity and selectivity of ferromagnetic catalysts 铁磁-顺磁相变对铁磁催化剂活性和选择性的不同影响

IF 6.5 1区化学

Journal of Catalysis Pub Date : 2024-09-12 DOI: 10.1016/j.jcat.2024.115749

Ya Chen , Yonghua Liu , Gaomou Xu , Tao Wang

{"title":"Diverse effects of ferromagnetic-paramagnetic phase transition on the activity and selectivity of ferromagnetic catalysts","authors":"Ya Chen , Yonghua Liu , Gaomou Xu , Tao Wang","doi":"10.1016/j.jcat.2024.115749","DOIUrl":"10.1016/j.jcat.2024.115749","url":null,"abstract":"<div>Tuning the catalyst’s activity and selectivity is usually achieved by modifying the electronic structure through strategies such as alloying, doping, strain, and ligand modification, but inevitably accompanied by geometric structure changes of catalysts. It is challenging to modify a catalyst’s electronic structure without changing its geometric structure. Recent studies found that the second-order ferromagnetic to paramagnetic (FM-PM) phase transition could promote catalytic performance without altering the geometric structures of active sites, which was also known as the magneto-catalytic effect (MCE). However, the understanding of the MCE is still incomplete. Herein, we conducted systematic density functional theory (DFT) calculations to clarify the complex reaction mechanisms for conversions of nitrogen-containing small molecules on both FM and PM Ni (111) surfaces. Our microkinetic modeling (MKM) results demonstrate that FM-PM phase transition promotes the N2O decomposition activity of FM Ni catalyst but decreases its activity for NO decomposition while showing a negligible influence on the activity of ammonia decomposition. These results indicate the promotion, inhibition, and disappearance mechanisms of MCE on the catalytic activity, which further changes the selectivity of different products. We anticipate the MCE will work as an effective strategy for fine-tuning the activity and selectivity of ferromagnetic catalysts in heterogeneous catalysis, providing an extra basis for rational catalyst design.</div>","PeriodicalId":346,"journal":{"name":"Journal of Catalysis","volume":"439 ","pages":"Article 115749"},"PeriodicalIF":6.5,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142244236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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