ChemCatChem最新文献_第10页

Front Cover: Synthesis-Structure-Catalysis Relations in CHA Zeolites Applied for Selective Catalytic Reduction of NOx with Ammonia (ChemCatChem 16/2024) 封面：应用于氨选择性催化还原氮氧化物的 CHA 沸石的合成-结构-催化关系（ChemCatChem 16/2024）

IF 3.8 3区化学

ChemCatChem Pub Date : 2024-08-27 DOI: 10.1002/cctc.202481601

Prof. Nao Tsunoji, Misae Onishi, Sou Sonoda, Dr. Takeshi Ohnishi, Prof. Masaru Ogura, Prof. Zen Maeno, Prof. Takashi Toyao, Prof. Ken-ichi Shimizu

{"title":"Front Cover: Synthesis-Structure-Catalysis Relations in CHA Zeolites Applied for Selective Catalytic Reduction of NOx with Ammonia (ChemCatChem 16/2024)","authors":"Prof. Nao Tsunoji, Misae Onishi, Sou Sonoda, Dr. Takeshi Ohnishi, Prof. Masaru Ogura, Prof. Zen Maeno, Prof. Takashi Toyao, Prof. Ken-ichi Shimizu","doi":"10.1002/cctc.202481601","DOIUrl":"https://doi.org/10.1002/cctc.202481601","url":null,"abstract":"The Front Cover represents the three formation routes of zeolite from different starting materials. Zeolites are crucial industrial catalysts, whereas their crystallization mechanism is still unclear, limiting their rational functional design. Nao Tsunoji and co-workers present the synthesis–structure–catalysis relation of CHA zeolite to get fundamental knowledge for intentionally controlling the function of zeolites. Different starting materials provide three different formation pathways to form CHA zeolites with different properties in the presence of tetraethylammonium hydroxide as an inexpensive organic structure directing agent. The knowledge related to origin of the catalytic durability was obtained based on their structural character, crystallization mechanism, and exhaust gas purification ability. More information can be found in the Research Article by Nao Tsunoji and co-workers (DOI: 10.1002/cctc.202400459).\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture>\u0000 </div>\u0000 </figure>\u0000 ","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"16 16","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.202481601","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142084581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Recent Progress on Cobalt-Based Heterogeneous Catalysts for Hydrogen Production from Ammonia Borane 钴基异相催化剂用于氨硼烷制氢的最新进展

IF 3.8 3区化学

ChemCatChem Pub Date : 2024-08-27 DOI: 10.1002/cctc.202401271

Ms. Yilin Li, Dr. Xiaohan Gao, Dr. Xuechuan Iv, Dr. Ying Duan, Dr. Dong Sui, Wanting Chang, Dr. Yanliang Yang

{"title":"Recent Progress on Cobalt-Based Heterogeneous Catalysts for Hydrogen Production from Ammonia Borane","authors":"Ms. Yilin Li, Dr. Xiaohan Gao, Dr. Xuechuan Iv, Dr. Ying Duan, Dr. Dong Sui, Wanting Chang, Dr. Yanliang Yang","doi":"10.1002/cctc.202401271","DOIUrl":"10.1002/cctc.202401271","url":null,"abstract":"Ammonia borane (NH3BH3, AB) is a quintessential exemplar of chemical hydrogen storage materials and has been widely used in hydrogen evolution. Although expensive metal catalysts (such as Rh, Ru, Pt, Ag, etc.) exhibit high activity in the hydrolysis of ammonia borane, inexpensive metals are more economical. Cobalt (Co), in particular, is not only relatively inexpensive and readily available, but also possesses high activity and selectivity. Compared to other catalysts, cobalt-based catalysts have better durability and can maintain catalytic activity for a longer period of time, making them favored by researchers. These catalysts demonstrate excellent stability, hydrogen evolution rate, and turn over frequency. This article summarized previous progress in low price metal cobalt-based catalysts for hydrogen precipitation from ammonia borane, focusing on cobalt-based catalysts supported on various supports, especially those supported on carbon materials, metal oxides, MOFs, and nickel foams. The characteristics of high-performance catalytic systems are analyzed in detail. The development prospects of Co catalysts for hydrogen production from ammonia borane were also discussed. In summary, this review compiles various supported and other types of cobalt based catalysts in recent years, and also identifies the existing problems with these catalysts, providing a reference for developers to study these catalysts. It is believed that through careful regulation of the electronic and spatial structures of Co based catalysts, well-designed Co based non precious metal catalysts will play a significant role in the decomposition of ammonia borane.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"16 23","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208789","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

Cover Feature: Stabilizing Layered BiOBr Photoelectrocatalyst by Van Der Waals Heterojunction Strategy (ChemCatChem 16/2024) 封面专题：通过范德华异质结策略稳定层状生物硼光电催化剂（ChemCatChem 16/2024）

IF 3.8 3区化学

ChemCatChem Pub Date : 2024-08-27 DOI: 10.1002/cctc.202481602

Dr. Mengjiao Wang, Prof. Silvio Osella, Dr. Bruno Torre, Matteo Crisci, Fabian Schmitz, Roberto Altieri, Prof. Enzo Di Fabrizio, Dr. Heinz Amenitsch, Dr. Barbara Sartori, Zheming Liu, Prof. Teresa Gatti, Dr. Francesco Lamberti

{"title":"Cover Feature: Stabilizing Layered BiOBr Photoelectrocatalyst by Van Der Waals Heterojunction Strategy (ChemCatChem 16/2024)","authors":"Dr. Mengjiao Wang, Prof. Silvio Osella, Dr. Bruno Torre, Matteo Crisci, Fabian Schmitz, Roberto Altieri, Prof. Enzo Di Fabrizio, Dr. Heinz Amenitsch, Dr. Barbara Sartori, Zheming Liu, Prof. Teresa Gatti, Dr. Francesco Lamberti","doi":"10.1002/cctc.202481602","DOIUrl":"https://doi.org/10.1002/cctc.202481602","url":null,"abstract":"2D MoS2/BiOBr van der Waals heterojunctions can be used for photoelectrocatalytic hydrogen production. The Cover Feature shows a MoS2/BiOBr heterojunction working as a photocathode. The photogenerated electrons from BiOBr mainly flow into two directions: one is migrating towards the MoS2 surface, driving the hydrogen evolution reaction; the other is accumulating on BiOBr and reduces BiOBr to metallic Bi. However, in a heterojunction with small ratio of MoS2, the electrons are prone to transfer to MoS2, thus decreasing the accumulation of electrons on BiOBr and preventing it from deactivation. More information can be found in the Research Article by Mengjiao Wang, Francesco Lamberti, and co-workers (DOI: 10.1002/cctc.202400282).\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture>\u0000 </div>\u0000 </figure>\u0000 ","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"16 16","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.202481602","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142084582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Cr2O3 Clusters on ZnO as Hydrogen Pools for Efficient Syngas-To-Light Olefins 氧化锌上的 Cr2O3 团簇是高效合成气制轻烯烃的氢池

IF 3.8 3区化学

ChemCatChem Pub Date : 2024-08-27 DOI: 10.1002/cctc.202401421

Beikai Ding, Dr. Chengsheng Yang, Yue Chen, Wei-Peng Shao, Dr. Fan Yang, Chi Zhang, Dr. Zheng Wang, Prof. Dr. Yongmei Liu, Prof. Dr. Yong Cao, Prof. Dr. Yifeng Zhu, Dr. Xinhe Bao

{"title":"Cr2O3 Clusters on ZnO as Hydrogen Pools for Efficient Syngas-To-Light Olefins","authors":"Beikai Ding, Dr. Chengsheng Yang, Yue Chen, Wei-Peng Shao, Dr. Fan Yang, Chi Zhang, Dr. Zheng Wang, Prof. Dr. Yongmei Liu, Prof. Dr. Yong Cao, Prof. Dr. Yifeng Zhu, Dr. Xinhe Bao","doi":"10.1002/cctc.202401421","DOIUrl":"10.1002/cctc.202401421","url":null,"abstract":"Interfaces of mixed oxide are often considered the primary catalytic sites, yet the functionalities of the surrounding environments are less understood. Composite oxides, particularly ZnO-Cr2O3, show high activity and selectivity for syngas conversion, with ZnO dissociating H2 to hydrides and Cr2O3 activating CO. However, hydrides on ZnO cannot remain stable at temperatures above room temperature. Focusing on the puzzlingly high performance despite ZnO's inability to stabilize active hydrides at reaction temperatures (300–400 °C), we clarified the roles of each phase using models of Cr2O3/ZnO and ZnO/Cr2O3. Cr2O3 clusters on ZnO effectively stabilize and store hydrides, significantly enhancing syngas conversion compared to individual oxides or ZnO/Cr2O3. An acetate/ketene pathway on Cr2O3/ZnO was identified, driven by the unique role of Cr2O3 clusters in regulating local hydride and CO coverages, unlike other routes observed on ZnO/Cr2O3. These insights advance the understanding of the active structures and functionalities of mixed oxides in catalysis.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"16 23","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208794","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

Hydrogen Evolution Catalysis by Cobalt Complexes of an Aza-Bridged Bis-1,10-Phenanthroline Ligand Bearing Pendant Basic Sites 带有垂碱性位点的氮桥式双-1,10-菲罗啉配体的钴络合物催化氢气进化

IF 3.8 3区化学

ChemCatChem Pub Date : 2024-08-27 DOI: 10.1002/cctc.202401284

Bin Guan, Jiale Liu, Ji-dong Leng, Ting Fan, Lianpeng Tong

{"title":"Hydrogen Evolution Catalysis by Cobalt Complexes of an Aza-Bridged Bis-1,10-Phenanthroline Ligand Bearing Pendant Basic Sites","authors":"Bin Guan, Jiale Liu, Ji-dong Leng, Ting Fan, Lianpeng Tong","doi":"10.1002/cctc.202401284","DOIUrl":"10.1002/cctc.202401284","url":null,"abstract":"A novel series of molecular Co(II) complexes with aza-bridged bis-1,10-phenanthroline (bpa) ligands have been synthesized and reported for the catalytic hydrogen evolution reaction (HER). Various nitrogen donor substituents are introduced at the aza-bridge of the bis-phenanthroline moieties render intramolecular basic sites in the complexes’ second-coordination sphere. Modifying the pendant nitrogen donor significantly influences the catalytic HER performance. Among these, the cobalt complex with the (2-pyridyl)methyl substituted bis-phenanthroline ligand (L3) exhibits the most photocatalytic HER efficiency in both organic and aqueous media. Under optimized conditions with [Ru(bpy)3]2+ as a sensitizer and ascorbic acid as an electron donor, [CoII(L3)(TfO−)2] achieves an initial turnover frequency (TOF) of 1882±65 h−1 per catalyst and a turnover number (TON) of 4842±122 in a 3 hour reaction period under the irradiation of visible light. Combined experimental and theoretical evidences illustrate that phenanthroline moieties of the bpa ligands act as electron mediators during the HER catalysis, while the pendant nitrogen donor substituents mediate proton transfer. This work provides a unique example for understanding the activity-structure relationship of homogeneous HER catalyst concerning the redox-active properties and second coordination sphere basic sites of organic ligand platforms.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"16 23","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208818","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

Chemoenzymatic Synthesis of Plant-Derived Kavalactone Natural Products by Dynamic Resolution Using a Biosynthetic O-Methyltransferase Tailoring Enzyme 利用生物合成 O-甲基转移酶定制酶，通过动态解析化学酶法合成植物来源的卡瓦内酯天然产品

IF 3.8 3区化学

ChemCatChem Pub Date : 2024-08-26 DOI: 10.1002/cctc.202400883

Simon Rydzek, Florian Guth, Steffen Friedrich, Jakob Noske, Birte Höcker, Frank Hahn

{"title":"Chemoenzymatic Synthesis of Plant-Derived Kavalactone Natural Products by Dynamic Resolution Using a Biosynthetic O-Methyltransferase Tailoring Enzyme","authors":"Simon Rydzek, Florian Guth, Steffen Friedrich, Jakob Noske, Birte Höcker, Frank Hahn","doi":"10.1002/cctc.202400883","DOIUrl":"10.1002/cctc.202400883","url":null,"abstract":"Biosynthetic enzymes have enormous potential for the chemoenzymatic synthesis of natural products and other bioactive compounds. Methyltransferases are promising tools for the selective enzymatic modification of complex structures. This paper describes the production, purification and biochemical characterization of the O-methyltransferase JerF, which catalyzes unique 4-methoxy-5,6-dihydropyranone formation in jerangolid A biosynthesis. Isolation problems had hitherto prevented detailed studies on JerF and were solved by the fusion to maltose-binding protein. The differentiation of JerF between styryl-substituted dihydropyrandion enantiomers was investigated. In combination with a spontaneous racemization occurring with this type of substrates, a new enzymatic dynamic kinetic resolution was observed, which was used for the enantioselective chemoenzymatic synthesis of kavalactone natural products and new derivatives. In combination with an HMT-based SAM regeneration system, (+)-kavain, (+)-11,12-dimethoxykavain and (+)-12-fluorokavain were prepared in 3–4 steps on a 100 μmol scale with overall yields of 37–57 % and ees of 70–86 %. A mutational study based on an AlphaFold 2 model provided indications for active site residues with an influence on the performance of the enzyme that could be targeted for engineering in the future. This example illustrates how the exceptional enzymatic activities and specificities of biosynthetic enzymes can be exploited for the development of new synthesis approaches.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"16 23","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.202400883","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Tandem Hydrocyanation and Nitrile/Amide Cyclization of Propiolamides: A Rapid Access to 5-Iminopyrrolones 丙炔酰胺的串联氢氰化和腈/酰胺环化：快速获得 5-氨基吡咯烷酮

IF 3.8 3区化学

ChemCatChem Pub Date : 2024-08-26 DOI: 10.1002/cctc.202401255

Jiawen Hu, Suliang Wang, Lingna Wang, Dr. Jinguo Long, Prof. Dr. Xianjie Fang

引用次数: 0

Fabrication of FeCu/CC Composite for Efficient Removal of Nitrate for Aqueous Solution Via Electrochemical Reduction Process 通过电化学还原工艺制作用于高效去除水溶液中硝酸盐的 FeCu/CC 复合材料

IF 3.8 3区化学

ChemCatChem Pub Date : 2024-08-24 DOI: 10.1002/cctc.202401017

Weiman Li, Qingbo Yin, Cuicui Liu, Shuqin Yang, Dongyu Jin, Xiuli Wang, Laizhou Song

{"title":"Fabrication of FeCu/CC Composite for Efficient Removal of Nitrate for Aqueous Solution Via Electrochemical Reduction Process","authors":"Weiman Li, Qingbo Yin, Cuicui Liu, Shuqin Yang, Dongyu Jin, Xiuli Wang, Laizhou Song","doi":"10.1002/cctc.202401017","DOIUrl":"10.1002/cctc.202401017","url":null,"abstract":"The electrochemical nitrate reduction (ENR) for the conversion of nitrate to nitrogen gas is a significant strategy to remediate the eutrophication in surface water. However, the exploitations and practical applications of suitable electrocatalysts still face great challenges. In this study, FeCu bimetal microparticles were deposited onto surface of carbon cloth (CC) to fabricate the FeCu/CC electrocatalyst for the removal of nitrate. Among obtained catalysts, the sample with Fe/Cu molar ratio of 1 : 15 (Fe1Cu15/CC) exhibits the excellent electroreduction efficiency for nitrate removal (R(NO3−), >90 %) but an ineffective selectivity of N2 formation (S(N2), ~23 %). After the anchor of reduced graphite oxide (rGO) to surface of Fe1Cu15/CC, at the optimized condition without the assistance of chlorine oxidation, R(NO3−) and S(N2) of rGO/Fe1Cu15/CC catalyst reach 94.2 % and 72.8 %. After 5 day endurance test, the values of R(NO3−) and S(N2) are still 82.9 % and 62.8 %, demonstrating the promising durability of this catalyst electrode. Meanwhile, the potential application of rGO/Fe1Cu15/CC was explored for the treatment of simulated wastewater discharged by urban wastewater treatment plant, the concentration of total nitrogen (TN) decreases from 15–1.17 mg/L, and this value is lower than TN threshold limit in Class IV of Chinese surface water quality standard.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"16 23","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208823","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

Alkali Metal Iridates as Oxygen Evolution Catalysts Via Thermal Transformation of Amorphous Iridium (oxy)hydroxides. 通过无定形铱（氧）氢氧化物的热转化制备作为氧进化催化剂的碱金属铱酸盐。

IF 3.8 3区化学

ChemCatChem Pub Date : 2024-08-23 DOI: 10.1002/cctc.202401326

Mario Falsaperna, Rosa Arrigo, Frank Marken, Simon J. Freakley

{"title":"Alkali Metal Iridates as Oxygen Evolution Catalysts Via Thermal Transformation of Amorphous Iridium (oxy)hydroxides.","authors":"Mario Falsaperna, Rosa Arrigo, Frank Marken, Simon J. Freakley","doi":"10.1002/cctc.202401326","DOIUrl":"10.1002/cctc.202401326","url":null,"abstract":"Efficient water-splitting is severely limited by the anodic oxygen evolution reaction (OER). Iridium oxides remain one of the only viable catalysts under acidic conditions due to their corrosion resistance. We have previously shown that heat-treating high-activity amorphous iridium oxyhydroxide in the presence of residual lithium carbonate leads to the formation of lithium-layered iridium oxide, suppressing the formation of low-activity crystalline rutile IrO2. We now report the synthesis of Na-IrOx and K-IrOx featuring similarly layered crystalline structures. Electrocatalytic tests confirm Li-IrOx retains similar electrocatalytic activity to commercial amorphous IrO2 ⋅ 2H2O and with increasing size of the intercalated cation, the activity towards the OER decreases. However, the synthesised electrocatalysts that contain layers show greater stability than crystalline rutile IrO2 and amorphous IrO2 ⋅ 2H2O, suggesting these compounds could be viable alternatives for industrial PEM electrolysers where durability is a key performance measure.","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"16 23","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cctc.202401326","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Ruthenium Catalyzed Additive-Free N-Formylation of Amines with CO2 and H2: Exploring Carbon Neutral Hydrogen Cycle

IF 3.8 3区化学

ChemCatChem Pub Date : 2024-08-22 DOI: 10.1002/cctc.202401202

Mohammad Misbahur Rahman, Dr. Indranil Dutta, Dr. Sandeep Suryabhan Gholap, Giao N. Ngô, Dr. Yadagiri Rachuri, Lujain Alrais, Prof. Kuo-Wei Huang

引用次数: 0