ACS Engineering Au最新文献

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Climate Informed Engineering: An Essential Pillar of Industry 4.0 Transformation 气候信息工程:工业4.0转型的重要支柱
ACS Engineering Au Pub Date : 2022-11-01 DOI: 10.1021/acsengineeringau.2c00037
Nima Shokri*, Bjorn Stevens, Kaveh Madani, Jürgen Grabe, Michael Schlüter and Irina Smirnova, 
{"title":"Climate Informed Engineering: An Essential Pillar of Industry 4.0 Transformation","authors":"Nima Shokri*,&nbsp;Bjorn Stevens,&nbsp;Kaveh Madani,&nbsp;Jürgen Grabe,&nbsp;Michael Schlüter and Irina Smirnova,&nbsp;","doi":"10.1021/acsengineeringau.2c00037","DOIUrl":"10.1021/acsengineeringau.2c00037","url":null,"abstract":"<p >Breakthroughs in computing have led to development of new generations of Earth Systems Models providing detailed information on how our planet may locally respond to the ongoing global warming. Access to such climate information systems presents an unprecedented opportunity for engineers to make tangible contributions to climate adaptation through integration of climate information in their products, designs, and services. We introduce the concept of “Climate Informed Engineering” (CIE) as an emerging interdisciplinary field integrating climatic considerations in engineering products and services. The concept behind CIE is to enable engineers to build infrastructure, devices, sensors or develop new materials and processes that are informed by climate and climate change information. We believe CIE will be an increasingly important dimension of Engineering Science resonating with engineers and scientists with different backgrounds.</p>","PeriodicalId":29804,"journal":{"name":"ACS Engineering Au","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsengineeringau.2c00037","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44705838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
How van der Waals Approximation Methods Affect Activation Barriers of Cyclohexene Hydrogenation over a Pd Surface 范德华近似方法如何影响Pd表面环己烯加氢的激活势垒
ACS Engineering Au Pub Date : 2022-09-09 DOI: 10.1021/acsengineeringau.2c00031
Jacob Crouch, Tong Mou, Gengnan Li, Daniel Resasco and Bin Wang*, 
{"title":"How van der Waals Approximation Methods Affect Activation Barriers of Cyclohexene Hydrogenation over a Pd Surface","authors":"Jacob Crouch,&nbsp;Tong Mou,&nbsp;Gengnan Li,&nbsp;Daniel Resasco and Bin Wang*,&nbsp;","doi":"10.1021/acsengineeringau.2c00031","DOIUrl":"10.1021/acsengineeringau.2c00031","url":null,"abstract":"<p >Inclusion of van der Waals (vdW) interactions in density functional theory (DFT) calculations improves the accuracy of the calculations of molecular structures, solid structures, and molecular adsorption configuration and energy. However, it remains unclear how vdW approximations affect calculations of activation barriers of surface reactions, which is valuable for evaluating the reaction kinetics. In this work, we choose a prototype reaction─cyclohexene hydrogenation on a Pd surface─as an example to compare different approaches to include vdW interactions in the calculation of activation barriers of surface elementary steps. We find that the adsorption of cyclohexene and desorption of the product, cyclohexane, are very sensitive to the approaches used to incorporate vdW interactions, while the intrinsic barrier of hydrogenation only varies by about 10%. As a result, the apparent activation barrier also varies to a large extent (from −1.90 to 0.28 eV). The rate-determining transition state was found to be the first hydrogenation step, independent of the vdW approximation used. These calculations indicate that the comparison of intrinsic (true) activation barriers between experimentally measured activation barriers and calculated values is more straightforward, while the comparison for the apparent activation energy may be less reliable. Therefore, simultaneous measurement of intrinsic and apparent activation barriers could serve as a potential way to benchmark the most reliable vdW approximation for molecular adsorption and reaction.</p>","PeriodicalId":29804,"journal":{"name":"ACS Engineering Au","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsengineeringau.2c00031","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46671233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Developing ACS Engineering Au as the Broad-Scope Publishing Platform 开发ACS工程Au作为广泛的发布平台
ACS Engineering Au Pub Date : 2022-08-17 DOI: 10.1021/acsengineeringau.2c00030
Vivek V. Ranade*,  and , Linda J. Broadbelt*, 
{"title":"Developing ACS Engineering Au as the Broad-Scope Publishing Platform","authors":"Vivek V. Ranade*,&nbsp; and ,&nbsp;Linda J. Broadbelt*,&nbsp;","doi":"10.1021/acsengineeringau.2c00030","DOIUrl":"10.1021/acsengineeringau.2c00030","url":null,"abstract":"","PeriodicalId":29804,"journal":{"name":"ACS Engineering Au","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsengineeringau.2c00030","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41375497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Interrogation of the Plasma-Catalyst Interface via In Situ/Operando Transmission Infrared Spectroscopy 等离子体催化剂界面的原位/操作红外光谱探测
ACS Engineering Au Pub Date : 2022-08-05 DOI: 10.1021/acsengineeringau.2c00026
Russell J. Clarke,  and , Jason C. Hicks*, 
{"title":"Interrogation of the Plasma-Catalyst Interface via In Situ/Operando Transmission Infrared Spectroscopy","authors":"Russell J. Clarke,&nbsp; and ,&nbsp;Jason C. Hicks*,&nbsp;","doi":"10.1021/acsengineeringau.2c00026","DOIUrl":"https://doi.org/10.1021/acsengineeringau.2c00026","url":null,"abstract":"<p >Plasma-surface coupling has emerged as a promising approach to perform chemical transformations under mild conditions that are otherwise difficult or impossible thermally. However, a few examples of inexpensive and accessible <i>in situ</i>/<i>operando</i> techniques exist for observing plasma-solid interactions, which has prevented a thorough understanding of underlying surface mechanisms. Here, we provide a simple and adaptable design for a dielectric barrier discharge (DBD) plasma cell capable of interfacing with Fourier transform infrared spectroscopy (FTIR), optical emission spectroscopy (OES), and mass spectrometry (MS) to simultaneously characterize the surface, the plasma phase, and the gas phase, respectively. The system was demonstrated using two example applications: (1) plasma oxidation of primary amine functionalized SBA-15 and (2) catalytic low temperature nitrogen oxidation. The results from application (1) provided direct evidence of a 1% O<sub>2</sub>/He plasma interacting with the aminosilica surface by selective oxidation of the amino groups to nitro groups without altering the alkyl tether. Application (2) was used to detect the evolution of NO<sub>X</sub> species bound to both platinum and silica surfaces under plasma stimulation. Together, the experimental results showcase the breadth of possible applications for this device and confirm its potential as an essential tool for conducting research on plasma-surface coupling.</p>","PeriodicalId":29804,"journal":{"name":"ACS Engineering Au","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsengineeringau.2c00026","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71553329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Modeling of Hydrodynamic Cavitation Reactors: Reflections on Present Status and Path Forward 流体动力空化反应器的建模:现状与展望
ACS Engineering Au Pub Date : 2022-07-22 DOI: 10.1021/acsengineeringau.2c00025
Vivek V. Ranade*, 
{"title":"Modeling of Hydrodynamic Cavitation Reactors: Reflections on Present Status and Path Forward","authors":"Vivek V. Ranade*,&nbsp;","doi":"10.1021/acsengineeringau.2c00025","DOIUrl":"10.1021/acsengineeringau.2c00025","url":null,"abstract":"<p >Hydrodynamic cavitation (HC) is finding ever increasing applications in water, energy, chemicals, and materials sectors. HC generates intense shear, localized hot spots, and hydroxyl radicals, which are harnessed for realizing desired physicochemical transformations. Despite identification of HC as one of the most promising technology platforms, its potential is not yet adequately translated in practice. Lack of appropriate models for design, optimization, and scale-up of HC reactors is one of the primary reasons for this. In this work, the current status of modeling of HC reactors is presented. Various prevailing approaches covering empirical, phenomenological, and multiscale models are critically reviewed in light of personal experience of their application. Use of these approaches for different applications such as biomass pretreatment and wastewater treatment is briefly discussed. Some comments on extending these models for other applications like emulsions and crystallization are included. The presented models and discussion will be useful for practicing engineers and scientists interested in applying HC for a variety of applications. Some thoughts on further advances in modeling of HC reactors and outlook are shared, which may stimulate further research on improving the fidelity of computational models of HC reactors.</p>","PeriodicalId":29804,"journal":{"name":"ACS Engineering Au","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/bc/db/eg2c00025.PMC9782368.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10506505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Thermochromic Fenestration Elements Based on the Dispersion of Functionalized VO2 Nanocrystals within a Polyvinyl Butyral Laminate 基于功能化VO2纳米晶体在聚乙烯醇丁醛层压板内分散的热致变色开窗元件
ACS Engineering Au Pub Date : 2022-07-21 DOI: 10.1021/acsengineeringau.2c00027
Nicholas I. Cool, Carlos A. Larriuz, Randall James, Jaime R. Ayala,  Anita, Mohammed Al-Hashimi and Sarbajit Banerjee*, 
{"title":"Thermochromic Fenestration Elements Based on the Dispersion of Functionalized VO2 Nanocrystals within a Polyvinyl Butyral Laminate","authors":"Nicholas I. Cool,&nbsp;Carlos A. Larriuz,&nbsp;Randall James,&nbsp;Jaime R. Ayala,&nbsp; Anita,&nbsp;Mohammed Al-Hashimi and Sarbajit Banerjee*,&nbsp;","doi":"10.1021/acsengineeringau.2c00027","DOIUrl":"https://doi.org/10.1021/acsengineeringau.2c00027","url":null,"abstract":"<p >The energy required to heat, cool, and illuminate buildings continues to increase with growing urbanization, engendering a substantial global carbon footprint for the built environment. Passive modulation of the solar heat gain of buildings through the design of spectrally selective thermochromic fenestration elements holds promise for substantially alleviating energy consumed for climate control and lighting. The binary vanadium(IV) oxide VO<sub>2</sub> manifests a robust metal─insulator transition that brings about a pronounced modulation of its near-infrared transmittance in response to thermal activation. As such, VO<sub>2</sub> nanocrystals are potentially useful as the active elements of transparent thermochromic films and coatings. Practical applications in retrofitting existing buildings requires the design of workflows to embed thermochromic fillers within industrially viable resins. Here, we describe the dispersion of VO<sub>2</sub> nanocrystals within a polyvinyl butyral laminate commonly used in the laminated glass industry as a result of its high optical clarity, toughness, ductility, and strong adhesion to glass. To form high-optical-clarity nanocomposite films, VO<sub>2</sub> nanocrystals are encased in a silica shell and functionalized with 3-methacryloxypropyltrimethoxysilane, enabling excellent dispersion of the nanocrystals in PVB through the formation of siloxane linkages and miscibility of the methacrylate group with the random copolymer. Encapsulation, functionalization, and dispersion of the core─shell VO<sub>2</sub>@SiO<sub>2</sub> nanocrystals mitigates both Mie scattering and light scattering from refractive index discontinuities. The nanocomposite laminates exhibit a 22.3% modulation of NIR transmittance with the functionalizing moiety engendering a 77% increase of visible light transmittance as compared to unfunctionalized core─shell particles. The functionalization scheme and workflow demonstrated, here, illustrates a viable approach for integrating thermochromic functionality within laminated glass used for retrofitting buildings.</p>","PeriodicalId":29804,"journal":{"name":"ACS Engineering Au","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsengineeringau.2c00027","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71607112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
NOx and Hydrocarbon Trapping and Conversion in a Sequential Three-Zone Monolith: Spatiotemporal Features 氮氧化物和碳氢化合物的捕获和转化在一个连续的三区整体:时空特征
ACS Engineering Au Pub Date : 2022-07-08 DOI: 10.1021/acsengineeringau.2c00023
Abhay Gupta, Mugdha Ambast and Michael P. Harold*, 
{"title":"NOx and Hydrocarbon Trapping and Conversion in a Sequential Three-Zone Monolith: Spatiotemporal Features","authors":"Abhay Gupta,&nbsp;Mugdha Ambast and Michael P. Harold*,&nbsp;","doi":"10.1021/acsengineeringau.2c00023","DOIUrl":"10.1021/acsengineeringau.2c00023","url":null,"abstract":"<p >The spatiotemporal features of the multifunctional monolithic lean hydrocarbon NO<sub><i>x</i></sub> trap (LHCNT), for eliminating NO<sub><i>x</i></sub> (<i>x</i> = 1 and 2) and ethylene (C<sub>2</sub>H<sub>4</sub>), are examined using spatially resolved mass spectrometry (SpaciMS), spanning the sequentially positioned passive NO<sub><i>x</i></sub> adsorber (PNA; Pd/SSZ-13), hydrocarbon trap (HCT; Pd/BEA), and oxidation catalyst (OC; Pt/Al<sub>2</sub>O<sub>3</sub>–CeO<sub>2</sub>). The overall LHCNT performance is captured in temporal trapping efficiency profiles, which show the integral NO and C<sub>2</sub>H<sub>4</sub> uptake followed by delayed NO release along with NO and ethylene oxidation. Spatially resolved transient concentration profiles spanning uptake, release, and conversion of NO, H<sub>2</sub>, and C<sub>2</sub>H<sub>4</sub>, alone or as mixtures in feeds containing H<sub>2</sub>O, provide detailed insight into the transient coupling not attainable with effluent concentration monitoring alone. The PNA serves as the primary zone for NO uptake, followed by the OC and HCT. NO oxidation to NO<sub>2</sub> occurs during NO uptake in the PNA due to Pd(II) reduction, while more extensive oxidation occurs in the OC at higher temperature. C<sub>2</sub>H<sub>4</sub> uptake and oxidation occur in each of the functions with oxidation occurring the earliest (lowest temperature) in the OC. NO uptake in the PNA and HCT is negligibly affected by H<sub>2</sub> but protracted oxidation of H<sub>2</sub> during the temperature ramp delays NO release, suggesting persistence of NO bound on Pd(I). Both the PNA and HCT exhibit excellent C<sub>2</sub>H<sub>4</sub> uptake, which diminishes in the presence of NO. Spatially resolved concentration data reveal several interesting features, such as high-temperature, sequential NO oxidation (by O<sub>2</sub> to NO<sub>2</sub>) and C<sub>2</sub>H<sub>4</sub> oxidation (by NO<sub>2</sub> to NO + CO<sub>2</sub>) in the PNA. Simulated warmup experiments reveal that the LHCNT NO trapping is enhanced with C<sub>2</sub>H<sub>4</sub> addition but that a reduction in space velocity may be needed to improve performance. A previously developed PNA model predicts satisfactorily the main features of spatially resolved NO and NO + C<sub>2</sub>H<sub>4</sub> data.</p>","PeriodicalId":29804,"journal":{"name":"ACS Engineering Au","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsengineeringau.2c00023","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47078895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Effect of Cellulose and Polypropylene on Hydrolysis of Polyethylene Terephthalate for Chemical Recycling 纤维素和聚丙烯对化学回收用聚对苯二甲酸乙二醇酯水解的影响
ACS Engineering Au Pub Date : 2022-06-26 DOI: 10.1021/acsengineeringau.2c00024
Seshasayee Mahadevan Subramanya, Yanyu Mu and Phillip E. Savage*, 
{"title":"Effect of Cellulose and Polypropylene on Hydrolysis of Polyethylene Terephthalate for Chemical Recycling","authors":"Seshasayee Mahadevan Subramanya,&nbsp;Yanyu Mu and Phillip E. Savage*,&nbsp;","doi":"10.1021/acsengineeringau.2c00024","DOIUrl":"10.1021/acsengineeringau.2c00024","url":null,"abstract":"<p >We examined the hydrolysis of polyethylene terephthalate (PET) with added polypropylene or cellulose and measured the yield of the terephthalic acid (TPA) monomer recovered. The TPA yield from hydrolysis at 250 °C for 30 min nearly doubled from 40 to 75% with the addition of polypropylene (PP). It increased to 55% with the addition of cellulose. There were no statistically significant increases in TPA yield from hydrolysis with the added plastic or biomass at 300 or 350 °C. The solid material recovered from the hydrolytic depolymerization, after first recovering water- and dichloromethane-soluble compounds, was largely TPA, and the amounts of the other reaction products present with it were largely the same irrespective of the presence or absence of PP or cellulose in the reactor. The TPA yield was affected strongly by the reaction time, reaction temperature, and PET type (fiber-reinforced pellet vs chips from a water bottle). The addition of PP or cellulose to the reactor reduces the influence of reaction time on TPA yield from PET hydrolysis.</p>","PeriodicalId":29804,"journal":{"name":"ACS Engineering Au","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsengineeringau.2c00024","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41442653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Multiobjective Optimization and Implementation of a Biorefinery Production Scheme for Sustainable Extraction of Pectin from Quince Biowaste 从昆斯生物废料中可持续提取果胶的生物精炼生产方案的多目标优化与实施
ACS Engineering Au Pub Date : 2022-06-22 DOI: 10.1021/acsengineeringau.2c00018
Mathias Riveros-Gomez, Daniela Zalazar-García, Iside Mut, Rodrigo Torres-Sciancalepore, María Paula Fabani, Rosa Rodriguez and Germán Mazza*, 
{"title":"Multiobjective Optimization and Implementation of a Biorefinery Production Scheme for Sustainable Extraction of Pectin from Quince Biowaste","authors":"Mathias Riveros-Gomez,&nbsp;Daniela Zalazar-García,&nbsp;Iside Mut,&nbsp;Rodrigo Torres-Sciancalepore,&nbsp;María Paula Fabani,&nbsp;Rosa Rodriguez and Germán Mazza*,&nbsp;","doi":"10.1021/acsengineeringau.2c00018","DOIUrl":"10.1021/acsengineeringau.2c00018","url":null,"abstract":"<p >The objective of this study was to optimize the pectin extraction from industrial quince biowaste using citric acid as a hydrolytic agent and assisting the process with ultrasound technology. For this, the process was modeled using the Box–Behnken design (BBD) to find the factors’ optimum values and their interactions. The quince pectin extraction was carried out by adding to the biowaste a citric acid solution at different pH values (2.0, 2.5, and 3.0) in mass volume ratios of 1/25, 1/20, and 1/15 g/mL and immersing it in an ultrasound bath for 30, 45, and 60 min at controlled temperatures of 70, 80, and 90 °C. Pectin yield, process cost, and CO<sub>2</sub> emission were calculated under different conditions according to the BBD model, and a polynomial function was adjusted for each dependent variable. A multiobjective optimization technique known as “Genetic algorithms” was used to find the proper extraction conditions that would maximize the pectin yield and minimize the process cost. The optimal extraction conditions obtained were as follows: pH = 2.12, mvr = 0.04 g/mL, time = 48.98 min, and temperature = 85.20 °C, with response variables of pectin yield = 12.78%, cost = 1.501 USD/kg of pectin, and calculated CO<sub>2</sub> emission = 0.565 kg of CO<sub>2</sub>/kg of pectin.</p>","PeriodicalId":29804,"journal":{"name":"ACS Engineering Au","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsengineeringau.2c00018","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48097293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
K+-Modified Redox Properties of the CuOx/CeO2 Catalyst for Highly Efficient CO Oxidation 高效CO氧化CuOx/CeO2催化剂的K+改性氧化还原性能
ACS Engineering Au Pub Date : 2022-06-10 DOI: 10.1021/acsengineeringau.2c00017
Bao-Ju Wang, Jing-Peng Zhang, Yu Han, Yi-Kai Gao, Guo-Lei Xiang, Guang-Wen Chu and Yong Luo*, 
{"title":"K+-Modified Redox Properties of the CuOx/CeO2 Catalyst for Highly Efficient CO Oxidation","authors":"Bao-Ju Wang,&nbsp;Jing-Peng Zhang,&nbsp;Yu Han,&nbsp;Yi-Kai Gao,&nbsp;Guo-Lei Xiang,&nbsp;Guang-Wen Chu and Yong Luo*,&nbsp;","doi":"10.1021/acsengineeringau.2c00017","DOIUrl":"10.1021/acsengineeringau.2c00017","url":null,"abstract":"<p >CuO<sub><i>x</i></sub>/CeO<sub>2</sub> is emerging as an effective catalyst for CO oxidation due to its unique redox properties; however, its activity and stability still need to be enhanced compared with supported platinum group metals. Here, an approach is demonstrated to increase the CO oxidation performance and resistance to hydrocarbon inhibition through the K<sup>+</sup> modification of the CuO<sub><i>x</i></sub>/CeO<sub>2</sub> catalyst. The K<sup>+</sup> can improve the electron transfer at the metal–oxide interface, shifting the redox equilibrium (Cu<sup>2+</sup> + Ce<sup>3+</sup> ↔ Cu<sup>+</sup> + Ce<sup>4+</sup>) to be right to accelerate the formation of highly active Cu<sup>+</sup> species. The reaction activity of the K<sup>+</sup>-modified CuO<sub><i>x</i></sub>/CeO<sub>2</sub> catalyst was in the same order of magnitude as the noble metal of Pt and Pd catalysts. In addition, the K<sup>+</sup>-modified catalyst showed significantly improved resistance to hydrocarbon inhibition. This work demonstrates a facile way to tune the redox properties of binary transition metal oxides.</p>","PeriodicalId":29804,"journal":{"name":"ACS Engineering Au","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsengineeringau.2c00017","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48913361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
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