Catalysis Science & Technology最新文献_第5页

Enzymatic electrosynthesis system based on multi-enzyme catalysis or coupled with microbial transformation

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-01-21 DOI: 10.1039/d4cy01381f

Chunling Ma , Yuhua Wang , Kun Guo , Ranran Wu , Zhiguang Zhu

引用次数: 0

A review on the catalytic upgradation of vegetable/pyrolysis bio-oil from renewable sources: kinetic studies and environmental impact assessment

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-01-21 DOI: 10.1039/d4cy01475h

Prasanta Das

{"title":"A review on the catalytic upgradation of vegetable/pyrolysis bio-oil from renewable sources: kinetic studies and environmental impact assessment","authors":"Prasanta Das","doi":"10.1039/d4cy01475h","DOIUrl":"10.1039/d4cy01475h","url":null,"abstract":"<div><div>This study examines several aspects of bio-oil upgrading from vegetable oil (triglyceride-based) and pyrolysis oil through various catalysts, process conditions, and kinetic analyses of the thermochemical conversion processes for three distinct species: terrestrial biomass, macroalgae, and microalgae. Additionally, the overall environmental impact of the bio-oil production process is evaluated. Several fundamental physico-chemical characteristics of vegetable oil and pyrolysis oil are briefly discussed. Based on a review of the literature, it is determined that the primary issue is the oxygen content in vegetable or pyrolysis oil, which significantly lowers the oil's calorific value. This study further elaborates on various catalytic upgradation processes that have been reported in the literature. In addition, the catalysts' mechanisms are explained, and they are specifically classified as zeolites, metal sulfides, and non-sulfides. A total of 255 research publications pertinent to this topic have been reviewed to support this research article. In total, 241 articles have been surveyed, excluding books, chapters, theses, and technical reports. Furthermore, 185 catalytic upgrading research articles of vegetable oils or pyrolysis oils are considered in this study, including 41 pyrolysis process kinetics studies, 11 environmental effect assessments, and 18 other articles. A comparison of terrestrial biomass, microalgae, and macroalgae has been conducted using kinetics analysis, considering kinetic models such as KAS, FWO, Friedman, single-step, and global reaction models. To establish a sustainable pathway, waste-derived catalysts from renewable sources, such as biochar or other waste materials, have been incorporated. In addition, this study focuses on cost-effective processes and industrial applications. Lastly, catalyst regeneration and the energy and mass balance of a typical slow pyrolysis process are also considered in this work.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 5","pages":"Pages 1406-1433"},"PeriodicalIF":4.4,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143535644","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

Simple and effective preparation of highly efficient heterogeneous base catalysts†

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-01-21 DOI: 10.1039/d4cy01454e

Oleg Kikhtyanin , Valeriia Korolova , Evgeniya Grechman , Miloslav Lhotka , Martin Veselý , Francisco Ruiz Zepeda , David Kubička

{"title":"Simple and effective preparation of highly efficient heterogeneous base catalysts†","authors":"Oleg Kikhtyanin , Valeriia Korolova , Evgeniya Grechman , Miloslav Lhotka , Martin Veselý , Francisco Ruiz Zepeda , David Kubička","doi":"10.1039/d4cy01454e","DOIUrl":"10.1039/d4cy01454e","url":null,"abstract":"<div><div>The simple hydration of physically mixed Mg and Al oxides results in the formation of an LDH (layered double hydroxide) phase <em>via</em> the dissolution–precipitation–crystallization mechanism. Nevertheless, the change in the properties and catalytic performances of these materials with respect to the hydration conditions has not been well explained to date. Therefore, in this study, we hydrated physically mixed Mg and Al oxides at <em>T</em> = 25 °C or 75 °C within a time range of 5 minutes to 7 days. Subsequently, we characterized the properties of the resulting materials using an array of appropriate methods and assessed their performances in aldol condensation of furfural and acetone. An increase in the hydration time and temperature promoted the formation of the desired LDH phase. Nevertheless, the performance of the catalysts did not improve accordingly. We assumed that the surprisingly inferior performance of the LDH-rich catalysts was due to the deposition of Al species on their external solid surface instead of being incorporated in the LDH phase, and these species blocked the access of reactants to the catalytically active sites in the HTC phase, resulting in a decreased catalytic activity. Thus, the maximum activity of the catalysts was observed at a relatively low concentration of water-soluble Al species and, accordingly, at a relative content of LDH phase of 20–25%. These results are beneficial for understanding the relationship between the hydration conditions of MgO + Al<sub>2</sub>O<sub>3</sub> physical mixtures and the properties of the derived LDH-phase containing solids and have potential in the design of green, efficient and stable solid base catalysts.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 5","pages":"Pages 1506-1524"},"PeriodicalIF":4.4,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/cy/d4cy01454e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143535663","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

In situ growth of N-doped bamboo-like carbon nanotubes embedded with FeNi nanoparticles on carbon cloth as self-standing cathodes for efficient rechargeable zinc–air batteries†

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-01-21 DOI: 10.1039/d4cy01261e

Neng-Fei Yu , Xiaoyan Shu , Yuanjiang Yang , Honghui Wang , Qing-Hong Huang , Na Tian , Ji-Lei Ye , Yuping Wu

{"title":"In situ growth of N-doped bamboo-like carbon nanotubes embedded with FeNi nanoparticles on carbon cloth as self-standing cathodes for efficient rechargeable zinc–air batteries†","authors":"Neng-Fei Yu , Xiaoyan Shu , Yuanjiang Yang , Honghui Wang , Qing-Hong Huang , Na Tian , Ji-Lei Ye , Yuping Wu","doi":"10.1039/d4cy01261e","DOIUrl":"10.1039/d4cy01261e","url":null,"abstract":"<div><div> <em>In situ</em> growth of N-doped bamboo-like carbon nanotubes embedded with FeNi nanoparticles on carbon cloth (FeNi@NBCNTs/CC) has been reported, along with the demonstration of the direct application of FeNi@NBCNTs/CC as self-standing bifunctional air cathodes in rechargeable zinc–air batteries (RZABs). The resulting FeNi@NBCNTs/CC, with 3D integrated conductive frameworks, large surface area, hierarchically porous architecture and embedded FeNi nanoparticles, provided sufficient accessible reaction sites and an optimal charge/mass transfer environment. Thus, the FeNi@NBCNTs/CC exhibited excellent electrocatalytic performance toward the oxygen reduction reaction (ORR) with a positive half-wave potential of 0.90 V and toward the oxygen reduction reaction (OER) with a low potential of 1.52 V at 10 mA cm<sup>−2</sup>, outperforming commercial Pt/C and Ru/C catalysts, respectively. Impressively, they served as self-standing air cathodes for liquid and flexible quasi-solid-state RZABs, demonstrating outstanding battery performance with high energy density, robust durability with a low rate of energy loss and favorable flexibility. This work provides a useful strategy for fabricating low-cost and efficient electrodes without the use of polymeric binders and noble metals for metal–air batteries and other related fields.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 5","pages":"Pages 1604-1616"},"PeriodicalIF":4.4,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143535698","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

Theoretical analysis of the reaction mechanism of D2 gas generation using a Pd/C catalyst†

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-01-21 DOI: 10.1039/d4cy01537a

Hikaru Tanaka , Takashi Ikawa , Hironao Sajiki , Masanori Tachikawa , Taro Udagawa

引用次数: 0

Efficient Co and GO co-doped TiO2 catalysts for the electrochemical reduction of nitrate to ammonia†

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-01-21 DOI: 10.1039/d4cy01228c

Peiyan Lin , Renhong Chen , Sheng Xu , Xia Xia , Fang Zhao , Xuefeng Ren , Yumeng Lu , Liguo Gao , Junjiang Bao , Anmin Liu

{"title":"Efficient Co and GO co-doped TiO2 catalysts for the electrochemical reduction of nitrate to ammonia†","authors":"Peiyan Lin , Renhong Chen , Sheng Xu , Xia Xia , Fang Zhao , Xuefeng Ren , Yumeng Lu , Liguo Gao , Junjiang Bao , Anmin Liu","doi":"10.1039/d4cy01228c","DOIUrl":"10.1039/d4cy01228c","url":null,"abstract":"<div><div>Electrocatalytic nitrate (NO<sub>3</sub><sup>−</sup>) reduction to ammonia (NH<sub>3</sub>) has emerged as an environmentally friendly method for ammonia production due to its clean, efficient, and sustainable attributes. In this study, we prepared Co-doped TiO<sub>2</sub> materials with graphene oxide (GO), Co–TiO<sub>2</sub>/GO, as potential NO<sub>3</sub><sup>−</sup>RR electrocatalysts. Scanning electron microscopy (SEM) images revealed a spherical structure for the catalysts. Following a series of electrochemical tests, our findings indicated that Co-doping significantly enhances the NO<sub>3</sub><sup>−</sup>RR activity of TiO<sub>2</sub>. Furthermore, incorporating GO notably diminishes the initial potential of titania-based catalysts, thereby strengthening the NO<sub>3</sub><sup>−</sup>RR performance of TiO<sub>2</sub>. The engineered Co–TiO<sub>2</sub>/GO exhibits superior NO<sub>3</sub><sup>−</sup>RR electrochemical properties, achieving an NH<sub>3</sub> yield of up to 7.424 mg h<sup>−1</sup> cm<sup>−2</sup> and a Faraday efficiency of up to 56.5% at −1.1 V <em>vs.</em> RHE potential. This performance surpasses that of Co–TiO<sub>2</sub>, with minimal by-product NO<sub>2</sub><sup>−</sup> generation. We also conducted tests without the catalyst and in the absence of NO<sub>3</sub><sup>−</sup> in the electrolyte, confirming that the nitrogen in the synthesized ammonia was not derived from impurities in the catalyst or the electrolyte. Furthermore, Co–TiO<sub>2</sub>/GO demonstrated robust stability during eight cycles and 24 hours of continuous testing for the NO<sub>3</sub><sup>−</sup>RR performance. Theoretical calculations suggest that doping TiO<sub>2</sub> with Co and GO can enhance its electronic structure and conductivity, thereby facilitating the electrochemical synthesis of ammonia.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 5","pages":"Pages 1445-1455"},"PeriodicalIF":4.4,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143535647","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

Surface analysis of thermally stable Pt loaded CeO2–ZrO2 using colloidal Pt for TWC application†

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-01-21 DOI: 10.1039/d4cy01364f

Hiroki Tanaka , Yoshinori Endo , Masaaki Haneda

{"title":"Surface analysis of thermally stable Pt loaded CeO2–ZrO2 using colloidal Pt for TWC application†","authors":"Hiroki Tanaka , Yoshinori Endo , Masaaki Haneda","doi":"10.1039/d4cy01364f","DOIUrl":"10.1039/d4cy01364f","url":null,"abstract":"<div><div>Suppressing Pt aggregation is the most effective way to prepare highly active Pt-based three-way catalysts (TWCs), as Pt aggregation easily occurs during driving operations. As previously reported, forming a strong interaction between Pt and CeO<sub>2</sub> is a promising method to suppress aggregation in TWCs. In this study, we utilize different Pt precursors to modify the interaction in Pt-loaded CeO<sub>2</sub>–ZrO<sub>2</sub> (Pt/CZ). In fact, Pt/CZ prepared using colloidal Pt (C-Pt) exhibits significantly higher catalytic activity for purifying exhaust gas emissions than conventional Pt/CZ prepared using dinitrodiammine Pt (Pt-P) after aging treatment at 1000 °C under air. However, aging treatment under N<sub>2</sub> leads to the opposite result. IR analyses using CO as a probe gas indicated that the oxidation state of Pt derived from Pt-P was strongly affected by the atmosphere during aging treatment. The Pt particles formed on the surface of CZ from Pt-P were easily oxidized under air aging, often causing serious Pt aggregation. On the other hand, Pt particles dispersed on CZ as C-Pt were hardly affected. Further analyses such as TPR and IR using methanol as a probe molecule revealed that changes in the redox properties were attributed to the different amounts of boundary between Pt and CZ. The results suggest that the interface between Pt and CZ should be limited when oxidative operating conditions are expected because the extensive boundary provokes serious Pt aggregation.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 5","pages":"Pages 1473-1481"},"PeriodicalIF":4.4,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143535660","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

Photocatalytic selective oxidation of 2-phenoxy-1-phenylethanol coupled with Cd-MOF/S/Ni–NiO for hydrogen evolution performance and mechanism†

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-01-21 DOI: 10.1039/d4cy01389a

Ying Zhang , Afaq Hassan , Jiang Li , Jide Wang

{"title":"Photocatalytic selective oxidation of 2-phenoxy-1-phenylethanol coupled with Cd-MOF/S/Ni–NiO for hydrogen evolution performance and mechanism†","authors":"Ying Zhang , Afaq Hassan , Jiang Li , Jide Wang","doi":"10.1039/d4cy01389a","DOIUrl":"10.1039/d4cy01389a","url":null,"abstract":"<div><div>In this study, Cd-MOF/S/Ni–NiO (MOF = metal–organic framework) composite materials were prepared using a hydrothermal synthesis method and employed for the high-efficiency photocatalytic oxidation of the lignin β-O-4 model compound 2-phenoxy-1-phenylethanol, coupled with water splitting hydrogen evolution. The Cd-MOF/S/Ni–NiO composite material retained the petal-like morphology of Cd-MOF, with Ni-BTC acting as the precursor for Ni–NiO, effectively preventing metal agglomeration. Without the addition of Ni–NiO, the main photocatalytic oxidation products of 2-phenoxy-1-phenylethanol were phenol and acetophenone, and only 2.6% of 2-phenoxy-1-phenylethanone was produced, with a hydrogen production rate of 102 μmol g<sup>−1</sup> h<sup>−1</sup>. However, after the addition of 1 mmol Ni–NiO, 2-phenoxy-1-phenylethanol was almost completely converted, with phenol and acetophenone yields of 30% and 32%, respectively. The yield of 2-phenoxy-1-phenylethanone increased to 62%, and the hydrogen production rate reached 1058 μmol g<sup>−1</sup> h<sup>−1</sup>. It was found that the addition of an appropriate amount of Ni–NiO facilitated the formation of the oxidation product of 2-phenoxy-1-phenylethanone. The reaction mechanism was subsequently verified, revealing that h<sup>+</sup> is the main oxidizing species in the photocatalytic oxidation of 2-phenoxy-1-phenylethanol. This work demonstrates a dual-optimized catalytic system for the highly selective oxidation of lignin β-O-4 model compounds, coupled with simultaneous hydrogen production, providing new insights into the high-value application of lignin in the catalytic conversion of polymetallic oxides.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 5","pages":"Pages 1594-1603"},"PeriodicalIF":4.4,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143535697","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

Carbon dioxide refinery: critical review of valorisation processes into sustainable higher alcohol production

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-01-21 DOI: 10.1039/d4cy00870g

Subhasis Das , Ganapati D. Yadav

{"title":"Carbon dioxide refinery: critical review of valorisation processes into sustainable higher alcohol production","authors":"Subhasis Das , Ganapati D. Yadav","doi":"10.1039/d4cy00870g","DOIUrl":"10.1039/d4cy00870g","url":null,"abstract":"<div><div>The CO<sub>2</sub> refinery concept is vital for achieving net zero emission goal. Transforming CO<sub>2</sub> into fuels, chemicals, and materials offers an encouraging and profitable solution alongside renewable energy and green hydrogen. Higher alcohols (C<sub>2</sub>–C<sub>4</sub> alcohols) are essential in modern society and extensively used in the production of chemicals, solvents, and fuels. Even though bioethanol production from biomass is established, transforming CO<sub>2</sub> into higher alcohols presents a more sustainable and green initiative. Nevertheless, challenges like breaking the stable C–O bond in CO<sub>2</sub> and regulating C–C coupling in higher alcohol synthesis (HAS) make the process unfavourable. The present review highlights all the advancements in CO<sub>2</sub> hydrogenation for higher alcohol production, focusing on both the direct and indirect routes, catalytic systems, and efficient processes in both batch and fixed-bed reactors. Addressing these challenges will guide the development of efficient catalysts and processes for sustainable CO<sub>2</sub> utilization, supporting a greener future.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 5","pages":"Pages 1294-1338"},"PeriodicalIF":4.4,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143535640","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

Nature of molybdenum carbide surfaces for catalytic hydrogen dissociation using machine-learned potentials: an ensemble-averaged perspective†

IF 4.4 3区化学

Catalysis Science & Technology Pub Date : 2025-01-21 DOI: 10.1039/d4cy01202j

Woodrow N. Wilson , John Michael Lane , Chinmoy Saha , Sony Severin , Vivek S. Bharadwaj , Neeraj Rai

{"title":"Nature of molybdenum carbide surfaces for catalytic hydrogen dissociation using machine-learned potentials: an ensemble-averaged perspective†","authors":"Woodrow N. Wilson , John Michael Lane , Chinmoy Saha , Sony Severin , Vivek S. Bharadwaj , Neeraj Rai","doi":"10.1039/d4cy01202j","DOIUrl":"10.1039/d4cy01202j","url":null,"abstract":"<div><div>Molybdenum carbides with an electronic structure similar to noble metals have gained attention as a promising low-cost catalyst for biomass valorization and the hydrogen evolution reaction. However, our fundamental understanding of the catalyst surface and how different phases of these catalysts behave at varying reaction conditions is limited to ground state density functional theory calculations as <em>ab initio</em> molecular dynamics (AIMD) is computationally prohibitive at relevant length and time scales. In this work, we train a multi-atomic cluster expansion (MACE) machine-learned interatomic potentials (MLIP) to study hydrogen dissociation and dynamics over Mo, <em>δ</em>-MoC, α-Mo<sub>2</sub>C, and β-Mo<sub>2</sub>C surfaces at varying temperatures and hydrogen partial pressures. Our simulations identify unique and different molecular and atomic hydrogen adsorption sites on different surfaces that do not depend on the temperature. At low hydrogen pressures, the surface coverage is monolayer, which transitions to two-layer adsorption at higher pressures. We find that atomic hydrogen diffusion and recombinations are preferred over molybdenum atom hollow sites, while the diffusion over carbon-terminated facets was negligible, signifying particularly strong C–H interactions. In contrast, molecular hydrogen adsorption occurs mostly atop Mo or the bridging sites. At a comparable hydrogen loading, β-Mo<sub>2</sub>C (001) is the most active surface for hydrogen dissociation reaction. This work provides insights into the dynamic nature of the hydrogen dissociation chemistry and the diversity of hydrogen adsorption sites on molybdenum carbides.</div></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":"15 5","pages":"Pages 1492-1505"},"PeriodicalIF":4.4,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143535662","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