Applied Catalysis A: General最新文献_第3页

Enhancement of ethylene selectivity in chemical looping oxidative dehydrogenation of ethane using manganese-based redox catalysts supported on HY zeolite 使用 HY 沸石支撑的锰基氧化还原催化剂提高乙烷化学循环氧化脱氢过程中的乙烯选择性

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2024-10-01 DOI: 10.1016/j.apcata.2024.119974

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MnO2 as efficient and robust catalyst for halogen-free synthesis of cyclic carbonate from CO2 and epoxides MnO2 作为无卤素催化剂从二氧化碳和环氧化物合成环状碳酸酯的高效稳健催化剂

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2024-09-30 DOI: 10.1016/j.apcata.2024.119973

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Catalytic hydrogenolysis of formic acid to hydrogen over heterogeneous catalysts: A review on modification strategies, catalyst deactivation and reaction mechanism 在异相催化剂上催化甲酸加氢分解为氢气：改性策略、催化剂失活和反应机理综述

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2024-09-27 DOI: 10.1016/j.apcata.2024.119972

{"title":"Catalytic hydrogenolysis of formic acid to hydrogen over heterogeneous catalysts: A review on modification strategies, catalyst deactivation and reaction mechanism","authors":"","doi":"10.1016/j.apcata.2024.119972","DOIUrl":"10.1016/j.apcata.2024.119972","url":null,"abstract":"<div><div>Hydrogen is a renewable energy carrier and one of the most competitive fuel options for the future. Formic acid, due to its high gravimetric and volumetric hydrogen capacities (4.4 wt% and 53 g H2·L−1), is a viable hydrogen carrier. Formic acid can undergo hydrogen release and storage reactions when subjected to suitable catalysts. This paper reviews heterogeneous catalysts for the dehydrogenation of formic acid, focusing on catalyst modification, catalyst deactivation, and the reaction mechanism of formic acid. The modification strategies enhance catalyst performance by influencing catalyst size, composition, and electronic configuration through synergistic effects between metals and interactions between the support and the metal. The active sites are blocked by CO produced from side reactions, leading to catalyst poisoning. By adding Mo and altering the reaction alkalinity, CO production can be reduced, thereby preventing catalyst poisoning. Currently, there are two main mechanisms for formic acid decomposition. One mechanism involves adsorption and decomposition via the formate anion. The other involves decomposition and reorganization through a formic acid ester intermediate. This review summarizes the research progress on heterogeneous catalysts and suggests that Mo2C catalysts should be a focus for further study.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142420356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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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Study on the combustion of toluene by acid etching assisted ultrasonic supported low content Pt catalyst 酸蚀辅助超声波支撑低含量铂催化剂燃烧甲苯的研究

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2024-09-27 DOI: 10.1016/j.apcata.2024.119970

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Paving the way to transfer hydrogenation of CO2 with bio-derived glycerol over Ni supported zeolite catalysts 为在镍支撑沸石催化剂上利用生物衍生甘油进行二氧化碳转移加氢铺平道路

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2024-09-26 DOI: 10.1016/j.apcata.2024.119971

{"title":"Paving the way to transfer hydrogenation of CO2 with bio-derived glycerol over Ni supported zeolite catalysts","authors":"","doi":"10.1016/j.apcata.2024.119971","DOIUrl":"10.1016/j.apcata.2024.119971","url":null,"abstract":"<div><div>The CO2 transfer hydrogenation with bio-glycerol over a Ni-zeolite was systematically studied to produce formic and lactic acids. The alkaline hydrothermal reactions without a catalyst and with Ni-zeolite heterogeneous catalyst were explored, focusing on the effects of base types and concentrations, reaction atmosphere and temperature. In alkaline hydrothermal reactions without catalyst, NaOH demonstrated superior performance at 1 M. A Ni/NaZSM-5 catalyst showed astounding performance giving 9.3 mol-L−1-g−1 lactic acid and 6.5 mol-L−1-g−1 formic acid at 250 °C after 2 h. Notably, the zeolite showed resistance to the highly basic conditions of the reaction medium. For the first time, CO2 conversion in aqueous phase was reported addressing the complexity of CO2 solubility. A reaction network was proposed including the diverse glycerol transformations not yet studied for this system. Overall, this study sheds light on the understanding of this complex reaction system and the potential of Ni-supported zeolites for sustainable CO2 utilisation.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142420482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Prediction of catalytic performance of metal oxide catalysts for alkyne hydrogenation reaction based on machine learning 基于机器学习的炔烃加氢反应金属氧化物催化剂催化性能预测

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2024-09-20 DOI: 10.1016/j.apcata.2024.119969

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Novel PtCu/MIL-101(Cr) for efficient degradation of bisphenol A: Photothermal synergism promoted by the localized surface plasmon resonance effect 用于高效降解双酚 A 的新型 PtCu/MIL-101(Cr)：局部表面等离子体共振效应促进的光热协同作用

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2024-09-19 DOI: 10.1016/j.apcata.2024.119968

{"title":"Novel PtCu/MIL-101(Cr) for efficient degradation of bisphenol A: Photothermal synergism promoted by the localized surface plasmon resonance effect","authors":"","doi":"10.1016/j.apcata.2024.119968","DOIUrl":"10.1016/j.apcata.2024.119968","url":null,"abstract":"<div><div>Semiconductor photocatalysis is one of the most useful methods to solve environmental pollution problems. Herein, nanomaterial PtCu/MIL-101(Cr) was produced by an improved hydrothermal technique. The composite exhibited excellent photocatalytic performance with 99.7 % BPA degradation under 100 min visible light irradiation. First, the PtCu alloy has the effect of the local surface plasmon resonance effect, which can convert the photons to hot electrons and increase the reaction temperature. The synergistic effect (1+1>2) between photocatalysis and thermocatalysis significantly improved the photocatalytic efficiency. Second, the bimetallic alloying lowered the metals' work function and reduced the Schottky barrier between the PtCu alloy and MIL-101(Cr), which effectively promoted the carrier transfer. The ·O2-, ·OH and h+ were dominant reactive substances in the degradation process. The intermediates and degradation pathways of BPA were analyzed by 3D-EEM. The reaction mechanism was proposed based on theoretical calculations and experimental analysis. This work provides new directions for designing photothermal synergistic green catalysts and purifying the environment.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142322387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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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Benchmarking potential catalysts and choice of descriptor for CO2 methanation using transition metal based catalysts 使用过渡金属催化剂进行二氧化碳甲烷化的潜在催化剂基准分析和描述因子选择

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2024-09-18 DOI: 10.1016/j.apcata.2024.119957

{"title":"Benchmarking potential catalysts and choice of descriptor for CO2 methanation using transition metal based catalysts","authors":"","doi":"10.1016/j.apcata.2024.119957","DOIUrl":"10.1016/j.apcata.2024.119957","url":null,"abstract":"<div>Supported Pt, Pd, Rh, Ru as Noble and Ni, bimetallic Ni-M (M = Co, Cu, Fe, with Ni/M = 3:1 by weight) as Non-noble catalysts were synthesized, characterized, and tested for CO2 methanation to benchmark and obtain a suitable descriptor. Noble metal catalysts are reduced almost completely with a lower onset of reduction temperature than Non-noble catalysts. The reduced Ni-M catalysts possessed an alloy phase in each as substantiated by a peak shift (∼ 0.2–0.4º) with reference to metallic nickel. The catalysts are benchmarked for their activity at 523 K by reporting turnover frequency (<math><msub><mrow><mi>TOF</mi></mrow><mrow><msub><mrow><mi>CO</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></msub></math>). The Ni-Fe and Rh catalysts possess maximum <math><msub><mrow><mi>TOF</mi></mrow><mrow><msub><mrow><mi>CO</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></msub></math> (∼ 35 × 10−3 sec−1), while Ru, Rh catalysts have better CH4 selectivity (∼99 %) than Ni-Fe (95 %) catalyst. The knowledge of descriptor is revisited for this reaction by calculating surface properties and observed that there exists a volcano relationship between dissociative CO2 adsorption energy (Ediss) and <math><msub><mrow><mi>TOF</mi></mrow><mrow><msub><mrow><mi>CO</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></msub></math>.</div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142272047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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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Probing morphology-dependent PDI/g-C3N4 heterostructures for co-production of H2O2 and 2,5-diformylfuran 探究与形态有关的 PDI/g-C3N4 异质结构，用于联合生产 H2O2 和 2,5-二甲酰基呋喃

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2024-09-18 DOI: 10.1016/j.apcata.2024.119967

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Efficient CO2 reduction to C2 products in a Ce-TiO2 photoanode-driven photoelectrocatalysis system using a Bnanometer Cu2O cathode 在使用 Bnanometer Cu2O 阴极的 Ce-TiO2 光阳极驱动光电催化系统中将 CO2 高效还原为 C2 产物

IF 4.7 2区化学

Applied Catalysis A: General Pub Date : 2024-09-18 DOI: 10.1016/j.apcata.2024.119966

{"title":"Efficient CO2 reduction to C2 products in a Ce-TiO2 photoanode-driven photoelectrocatalysis system using a Bnanometer Cu2O cathode","authors":"","doi":"10.1016/j.apcata.2024.119966","DOIUrl":"10.1016/j.apcata.2024.119966","url":null,"abstract":"<div>Excessive emission of CO2 into the atmosphere has caused significant environmental issues. Photoelectrocatalytic (PEC) reduction of CO2 is an effective method that combines the benefits of both photo- and electrocatalysis. This process effectively minimizes CO2 emissions, enhances the efficiency of CO2 reduction, and diminishes energy consumption during the reduction process. In this work, we have successfully developed a photoelectrochemical (PEC) system, integrating a Ce-doped TiO2 film as the photoanode and Cu2O as the dark cathode, in which the 4 % Ce-TiO2 film photoanode demonstrated the best performance. Electrochemical performance data revealed that the Cu2O catalysts, characterized by their octahedral geometry that optimally presents active sites for CO2 reduction, displayed superior activity in converting CO2. Through a straightforward hydrothermal synthesis, we crafted three-dimensional, flower-like TiO2 thin films. The strategic incorporation of cerium into the TiO2 matrix not only enhanced the material's crystallinity but also resulted in a uniform and compact morphology. This modification significantly narrowed the band gap of TiO2, thereby boosting its photocatalytic capabilities. In the system where a 4 % Ce-TiO2 thin film photoanode was used to drive the PEC reduction of CO2, the octahedral Cu2O catalyst demonstrated the highest selectivity for C2 products. This occurred at a reaction voltage of −1.4 V vs. RHE, resulting in a total Faraday efficiency of 67.33 %. Notably, this Faraday efficiency is double the one produced from the electrocatalytic (EC) system. This work demonstrates that the use of a 4 % Ce-TiO2 film as a photoanode is able to solve the photocorrosion problem of the Cu2O catalyst while employing a photovoltaic combination to enhance the selectivity to C2 products.</div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142272046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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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