Applications in Energy and Combustion Science最新文献

{"title":"Real-time FPGA-based laser absorption spectroscopy using on-chip machine learning for 10 kHz intra-cycle emissions sensing towards adaptive reciprocating engines","authors":"Kevin K. Schwarm,&nbsp;R. Mitchell Spearrin","doi":"10.1016/j.jaecs.2023.100231","DOIUrl":"https://doi.org/10.1016/j.jaecs.2023.100231","url":null,"abstract":"<div><p>Fast emissions sensing is needed to enable rapid optimization on-the-fly for increasingly adaptive engine architectures to improve performance over a wide range of loads and to offer fuel flexibility towards a low-carbon energy future. In this work, a real-time laser absorption spectroscopy technique is developed for 10 kHz on-line measurements of engine exhaust gas temperature and carbon monoxide. Latency due to data reduction is significantly shortened through a machine learning approach to spectral analysis and minimization of post-processing complexity for implementation on a high-bandwidth field-programmable gate array (FPGA). The data reduction method is tested on cycle-resolved laser-absorption thermochemistry measurements in reciprocating piston engine exhaust. The sensor employs a quantum cascade laser to spectrally-resolve two fundamental rovibrational absorption lines of carbon monoxide near 4.9 <span><math><mi>μ</mi></math></span>m at a rate of 10 kHz. The recorded signals are passed to an FPGA to infer CO concentration and gas temperature through either a pre-trained ridge regression or artificial neural network model. Models are constructed to limit complexity with the aim of minimizing resource utilization and latency on the FPGA. Experimental data are used to evaluate the prediction accuracy of the models, with the neural network achieving RMS errors in CO mole fraction and gas temperature of 0.0390% and 15.0 K, respectively, compared to spectral fitting of the absorption lineshapes. The data reduction latencies are measured through hardware-in-the-loop demonstration, achieving a 10 kHz throughput and 25 <span><math><mi>μ</mi></math></span>s latency. Computational time of the end-to-end data reduction process on the FPGA is measured at 300 ns and 600 ns for the ridge regression and neural network, respectively. The data reduction methods presented in this work expand the utility of laser absorption spectroscopy for low-latency sensors that match the timescales of combustion and increase the potential for real-time sensing and control to minimize engine exhaust emissions and maximize performance.</p></div>","PeriodicalId":100104,"journal":{"name":"Applications in Energy and Combustion Science","volume":"16 ","pages":"Article 100231"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666352X23001206/pdfft?md5=a8dd4ca6dee8d4df51ff253dc8400c14&pid=1-s2.0-S2666352X23001206-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138490064","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}

{"title":"Establishing calibration-free pyrometry in reactive systems and demonstrating its advanced capabilities","authors":"Nicholas R. Jaramillo ,&nbsp;Cole A. Ritchie ,&nbsp;Michelle L. Pantoya ,&nbsp;Igor Altman","doi":"10.1016/j.jaecs.2023.100230","DOIUrl":"https://doi.org/10.1016/j.jaecs.2023.100230","url":null,"abstract":"<div><p>A calibration-free multi-color pyrometry data analysis approach for determining the temporal change in the reciprocal temperature by only comparing the photomultiplier tube (PMT) responses to the system light emission is introduced. For Arrhenius reactions, analyzing the reciprocal temperature is particularly relevant for evaluating reactivity. The high accuracy of the proposed method is provided by eliminating the calibration step, which is made possible by considering the ratio of PMT signals as a function of time. The developed methodology is applicable to systems with continuous light emission spectra of the thermal nature that originate from condensed particulates. A demonstration of the data analysis approach was performed using aluminum powder burning in air. Four PMTs detected light emission during combustion that enabled analysis of six detector combinations to obtain a time-dependent signal ratio. Based on the temperature-dependent nature of light emission, the PMT response ratio provided the value of the reciprocal temperature change. All six detector combinations generated precisely coinciding results within time periods where the light emission trace behavior was relatively smooth that validated the data processing approach. It was also found that a non-smooth behavior of light emission led to significant deviations between outputs of different PMT combinations. This inconsistency between outputs was an indication of multi-temperature light emission whereas consistency between outputs corresponds to the single-temperature emission behavior. Using the calibration-free data processing approach, we isolated time periods where multi-temperature radiation is essential. Then, we further decoupled contributions from non-monotonic light emission signals and resolved two distinct temperatures responsible for observed radiation peculiarities.</p></div>","PeriodicalId":100104,"journal":{"name":"Applications in Energy and Combustion Science","volume":"16 ","pages":"Article 100230"},"PeriodicalIF":0.0,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666352X2300119X/pdfft?md5=8f52064160fe20dcb473dfd99bbf82b1&pid=1-s2.0-S2666352X2300119X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138438159","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}

{"title":"Development of the first Raman scattering thermometry during the first stage ignition in a rapid compression machine and determination of detection limits for NO-LIF","authors":"Raphael Dewor ,&nbsp;Christian Schulz ,&nbsp;Rene Daniel Büttgen ,&nbsp;Thorsten Brands ,&nbsp;Karl-Alexander Heufer ,&nbsp;Hans-Jürgen Koß","doi":"10.1016/j.jaecs.2023.100228","DOIUrl":"https://doi.org/10.1016/j.jaecs.2023.100228","url":null,"abstract":"<div><p>The interaction of recirculated NO_X with two-stage fuels in the early combustion process is not fully understood, especially at lower temperatures. Recently developed kinetic combustion models try to reproduce these interactions. To validate and improve these new models, accurate quantitative measurements of temperature in the combustion process are necessary. Previous works used Rayleigh or LIF techniques and have not reached an accuracy appropriate for the kinetic models. The present work demonstrates the feasibility of 1D spatially-resolved temperature measurements in a rapid compression machine with Raman scattering for the first time. The temperature data is measured with high precision during the first stage ignition of n-pentane as a two-stage fuel. Additionally, the temperature data is needed to determine possible NO detection limits. Therefore, the influence on combustion temperatures from NO_X-doping are compared with undoped gas mixtures is determined by spontaneous Raman scattering of N₂ excited by a KrF* excimer laser. The results show that spatially resolved N₂-Raman thermometry is feasible with a precision of approximately 3 % by investigating 30 averaged shots. The measured temperature profile in the first stage reveals a remarkable temperature difference between the edges and the inner area of the combustion volume due to differences in the reactivity, which is affected by chemistry and heat loss. Additionally, the NO detection limit is determined to be 30 ppm when averaging 10 single shots during an NO-doped N₂ mixture.</p></div>","PeriodicalId":100104,"journal":{"name":"Applications in Energy and Combustion Science","volume":"16 ","pages":"Article 100228"},"PeriodicalIF":0.0,"publicationDate":"2023-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666352X23001176/pdfft?md5=a31b534f5477e47248f0ac82fb11d20d&pid=1-s2.0-S2666352X23001176-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138435725","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}

{"title":"Fate of ilmenite as oxygen carrier during 1 MWth chemical looping gasification of biogenic residues","authors":"Paul Dieringer ,&nbsp;Falko Marx ,&nbsp;Florian Lebendig ,&nbsp;Michael Müller ,&nbsp;Andrea Di Giuliano ,&nbsp;Katia Gallucci ,&nbsp;Jochen Ströhle ,&nbsp;Bernd Epple","doi":"10.1016/j.jaecs.2023.100227","DOIUrl":"https://doi.org/10.1016/j.jaecs.2023.100227","url":null,"abstract":"<div><p>Chemical looping gasification (CLG) is a novel gasification technology, allowing for the efficient conversion of different solid feedstocks (e.g. biogenic residues) into a high-calorific syngas. As in any chemical looping technology, the oxygen carrier (OC), transporting heat and oxygen from the air to the fuel reactor, is crucial in attaining high process efficiencies. To investigate the fate of the OC during CLG in an industrial environment, ilmenite samples, collected during &gt;400 hours of chemical operation in 1 MW_th scale using three different biomass feedstocks, were analyzed using different lab techniques. In doing so, changes in OC particle morphology and composition induced by CLG operation were determined. Moreover, the most important physical and chemical characteristics of the utilized OC were measured. The ensuing dataset allowed for an in-depth evaluation of the CLG technology in semi-industrial scale in terms of OC lifetime and durability. It was found that in the absence of agglomeration, the cycled OC exhibits an oxygen transport capacity of 2.6 wt.-%, a particle density of 3400 kg/m³ and particle diameters between 60 and 250 µm in steady-state conditions. Moreover, it was found that OC loss via particle attrition determines the lifetime of the OC inside the 1 MW_th CLG system. On the other hand, feedstock-related agglomeration, observed during CLG operation with wheat straw, was shown to impede OC circulation between AR and FR and thus prevent efficient CLG operation. In summary, the present study thus not only highlights that generally long-term CLG operation in industry-like conditions is feasible, but also provides important insights into measures to improve OC lifetime and durability inside an industrial chemical looping system, such as an optimization of cyclone efficiency or tailored pre-treatment of the utilized feedstock.</p></div>","PeriodicalId":100104,"journal":{"name":"Applications in Energy and Combustion Science","volume":"16 ","pages":"Article 100227"},"PeriodicalIF":0.0,"publicationDate":"2023-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666352X23001164/pdfft?md5=1564f1fde716f6dbefad656b97bae826&pid=1-s2.0-S2666352X23001164-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138435724","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}

{"title":"Experimental and simulation study on evaporation characteristics of E85 impinging spray under DISI cold-start condition","authors":"Run CHEN ,&nbsp;Keiya NISHIDA ,&nbsp;Xinyi ZHOU ,&nbsp;Tie LI","doi":"10.1016/j.jaecs.2023.100224","DOIUrl":"10.1016/j.jaecs.2023.100224","url":null,"abstract":"<div><p>The direct injection of ethanol-gasoline blended fuel into the engine cylinder near the top dead center (TDC) is evitable to suffer from the wall impingement due to more injection mass required to maintain the same air/fuel ratio with traditional fossil fuels. In this study, the evaporation characteristics of E85 cold-start impinging spray were investigated by experiments and numerical simulation. A constant volume vessel was used to produce the direct-injection spark-ignition (DISI) engine-like conditions. The ultraviolet (UV) – visible (Vis) dual-wavelength laser absorption scattering (LAS) technique was employed to quantitatively measure the individual components evaporation in E85, with the emphasis on the effects of impinging distance, wall temperature and injection pressure on the mixture formation. The results show that although the larger impinging distance rarely influences the evaporation before impingement, it facilitates the E85 evaporation process after impingement due to the better atomization by low boiling point (LBP) components (e.g. ethanol). The effects of cold-start wall temperature on the E85 impinging spray are greatly dependent on the impinging distance. Under the small impinging distance, the ethanol and low boiling point (LBP) components of gasoline evaporate faster after impingement at higher wall temperature, but such effect becomes absent under long impinging distance. Therefore, the smaller impinging distance shows a higher sensitivity to wall temperature. Lower wall temperature leads to a high wall heat transfer, thus potentially extend the evaporation time at the near wall region along the spray axis. At either impingement timing or initial impingement, the LBP component with high latent heat evaporates fast, leading to a decrease of surrounding gas temperature. Increasing injection pressure helps to greatly improve the evaporation of the high boiling point (HBP) component in gasoline under cold-start impingement. The evaporation ratio of E85 increases up to about 18% ∼ 30% than that of E100 at the initial impinging period under cold-start condition.</p></div>","PeriodicalId":100104,"journal":{"name":"Applications in Energy and Combustion Science","volume":"16 ","pages":"Article 100224"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666352X23001139/pdfft?md5=4f54640999bdb6b0196f35428df04018&pid=1-s2.0-S2666352X23001139-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135763506","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}

{"title":"Enhancement of lean blowout limits of swirl stabilized NH3-CH4-Air flames using nanosecond repetitively pulsed discharges at elevated pressures","authors":"B Aravind,&nbsp;Liang Yu,&nbsp;Deanna Lacoste","doi":"10.1016/j.jaecs.2023.100225","DOIUrl":"10.1016/j.jaecs.2023.100225","url":null,"abstract":"<div><p>This study experimentally examines the impact of nanosecond repetitively pulsed (NRP) discharges on lean premixed methane-ammonia-air swirl flames at pressures up to 4 bar. The results reveal the extension of flame blowout limit by 10–12 % under atmospheric conditions and 5–6 % at 4 bar, when NRP discharges are applied. This decrease in the plasma effect could be attributed to the detrimental impact of strong shock waves at high pressure, destabilizing the flame. NH₃-CH₄-air flames shows higher lean blowout limits in comparison to CH₄-air flames. NRP discharges exhibit consistent impact on the lean blowout limit enhancement across ammonia fractions (20–60 %), irrespective of pressure conditions. These results are obtained for a ratio of NRP discharge power to flame thermal power of 0.63 % and constant pulse repetition frequency of 30 kHz.</p></div>","PeriodicalId":100104,"journal":{"name":"Applications in Energy and Combustion Science","volume":"16 ","pages":"Article 100225"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666352X23001140/pdfft?md5=51839cb386cabf0bee26d1436682af2c&pid=1-s2.0-S2666352X23001140-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135763716","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}

{"title":"Large eddy simulation investigation of ammonia spray characteristics under flash and non-flash boiling conditions","authors":"Ziwei Huang,&nbsp;Haiou Wang,&nbsp;Kun Luo,&nbsp;Jianren Fan","doi":"10.1016/j.jaecs.2023.100220","DOIUrl":"https://doi.org/10.1016/j.jaecs.2023.100220","url":null,"abstract":"<div><p>Ammonia is an ideal zero-carbon fuel for energy systems, and it can be used directly in a liquid state. However, liquid ammonia is susceptible to flash boiling due to its unique physical and chemical properties, which brings challenges for liquid ammonia spray and combustion simulations. In the present study, high-pressure liquid ammonia injection under flash boiling and non-flash boiling conditions was investigated. Large eddy simulations were conducted in an Eulerian–Lagrangian framework. The aim is to explore in detail the influence of the critical parameters on the characteristics of liquid ammonia spray. Under the flash boiling condition, the effects of ambient pressure were examined. Comparisons of the measured and predicted spray penetration and morphology demonstrate that the present simulations can reproduce liquid ammonia spray characteristics well. Varying ambient pressures causes the ammonia spray to be at different superheat levels, resulting in significant changes in spray features. Under the non-flash boiling condition, the effects of injection pressure and ambient pressure were investigated. The higher injection pressure feature a higher gas velocity and improves the mixing of ammonia and air. The ammonia spray propagates more rapidly and the spray width becomes wider at lower ambient pressure.</p></div>","PeriodicalId":100104,"journal":{"name":"Applications in Energy and Combustion Science","volume":"16 ","pages":"Article 100220"},"PeriodicalIF":0.0,"publicationDate":"2023-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666352X23001097/pdfft?md5=12bb9e49ab470d5c4613ca1650aaee56&pid=1-s2.0-S2666352X23001097-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134657765","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}

{"title":"Transient analysis of solar pyrolysis and hydrogen yield via interband cascade laser absorption spectroscopy of methane, acetylene, ethylene, and ethane","authors":"Barathan Jeevaretanam,&nbsp;Mostafa Abuseada,&nbsp;Chuyu Wei,&nbsp;Nicolas Q. Minesi,&nbsp;Timothy S. Fisher,&nbsp;R. Mitchell Spearrin","doi":"10.1016/j.jaecs.2023.100223","DOIUrl":"https://doi.org/10.1016/j.jaecs.2023.100223","url":null,"abstract":"<div><p>A mid-infrared laser absorption sensing method has been developed to measure species concentrations of four hydrocarbons and gas temperature over a range of temperatures in mixture compositions relevant to the pyrolytic decomposition of natural gas. The four measured species (methane, acetylene, ethylene, and ethane) are the most abundant hydrocarbons during the pyrolysis of natural gas, and provide a means to monitor decomposition progress and hydrogen yield through molar balance. In this work, time-division multiplexed signals of three distributed-feedback interband cascade lasers are used to make simultaneous measurements of select C-H stretch rovibrational transitions of the target hydrocarbons in the 3.00–3.34 <span><math><mrow><mi>μ</mi><mi>m</mi></mrow></math></span> range. The sensor was validated over a range of temperatures and pressures (300–1000 K, 0.03–1 atm) at relevant mixture compositions, with correction methods developed to mitigate cross-species interference. The sensor was demonstrated on a solar-thermal pyrolysis reactor, where time-resolved measurements of species mole fractions were performed across a range of insolation conditions to capture the transient response of the reactor.</p></div>","PeriodicalId":100104,"journal":{"name":"Applications in Energy and Combustion Science","volume":"16 ","pages":"Article 100223"},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666352X23001127/pdfft?md5=bc8d6675d735527d35704cdb557c2f59&pid=1-s2.0-S2666352X23001127-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134657226","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}

{"title":"Multi-line OH-LIF for gas-phase temperature and concentration imaging in the SpraySyn burner","authors":"Sadrollah Karaminejad,&nbsp;Abbas El Moussawi,&nbsp;Thomas Dreier,&nbsp;Torsten Endres,&nbsp;Christof Schulz","doi":"10.1016/j.jaecs.2023.100222","DOIUrl":"10.1016/j.jaecs.2023.100222","url":null,"abstract":"<div><p>Gas-phase temperature and OH concentration images are measured in the SpraySyn nanoparticle-synthesis standard burner using multi-line OH laser-induced fluorescence (LIF) thermometry. In this burner, a spray flame fed by a combustible nanoparticle precursor solution is stabilized by a surrounding axisymmetric lean premixed laminar methane/oxygen pilot flame. For measuring OH rotational temperature, the laser is scanned across the 282.05–282.17 nm range and LIF excitation spectra are fitted for each image pixel by simulated spectra. Temperature maps are determined for the pilot flame and the ethanol spray flame with variable dispersion gas flow rates of oxygen used in the two-fluid nozzle. The addition of 2-EHA (2-ethylhexanoic acid) to the solution was found to increase the flame temperature. Laser attenuation across the flame was measured using simultaneous recordings of the fluorescence of uranine/water solution from two dye cuvettes illuminated with the laser sheet before and after the flame and the effect of attenuation was quantified. Absolute OH concentration distributions are determined by combining the LIF images, laser attenuation measurements, and derived temperature distributions. The temporal stability of the flame is investigated for various operating conditions by statistical evaluation of recorded instantaneous OH-LIF images.</p></div>","PeriodicalId":100104,"journal":{"name":"Applications in Energy and Combustion Science","volume":"16 ","pages":"Article 100222"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666352X23001115/pdfft?md5=50e897c5833fe8702fed6dc30245e090&pid=1-s2.0-S2666352X23001115-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135510146","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}

{"title":"Chemical looping CO2 capture and in-situ conversion: Fundamentals, process configurations, bifunctional materials, and reaction mechanisms","authors":"Bo Jin ,&nbsp;Kerun Wei ,&nbsp;Tong Ouyang ,&nbsp;Yihan Fan ,&nbsp;Haibo Zhao ,&nbsp;Haiyan Zhang ,&nbsp;Zhiwu Liang","doi":"10.1016/j.jaecs.2023.100218","DOIUrl":"https://doi.org/10.1016/j.jaecs.2023.100218","url":null,"abstract":"<div><p>As an emerging and promising technology to debate the energy and environment issues raised by anthropogenic CO₂ emissions, chemical looping CO₂ capture and in-situ conversion (CL-ICCC) exhibits the merit of high efficiency, low cost, and high safety to achieve integrated CO₂ capture and conversion (ICCC) by eliminating the purification, compression, transportation, and storage procedures. However, the interpretation and state-of-the-art of CL-ICCC are still unclear, which contribute to a harmful effect on promoting this technology for industrial applications. Herein, this work presents a timely review on CL-ICCC by giving fundamental discussions on definition, process configuration, bifunctional material, reaction mechanism and thermo-economic behavior. Based on the product distributions (syngas, CO, CH₄, C₂H₄/C₃H₆), CL-ICCC systems using abundant bifunctional materials with flexible combinations of sorbents and catalysts are classified to satisfy the demand of customers. Lots of moderating strategies are proposed to enhance the activity and stability of bifunctional material, meanwhile, reaction mechanism is revealed to explain the underlying reason for superior performance. The challenges and future prospectives from the aspects of microscopic reaction mechanism, bifunctional material rational design, reaction equipment development and system integration and optimization are discussed to provide possible suggestions. This review aims to illustrate CL-ICCC more clearly and accelerate its commercial demonstration.</p></div>","PeriodicalId":100104,"journal":{"name":"Applications in Energy and Combustion Science","volume":"16 ","pages":"Article 100218"},"PeriodicalIF":0.0,"publicationDate":"2023-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666352X23001073/pdfft?md5=f7c23a6a741ec5cb391daaf3c30f4517&pid=1-s2.0-S2666352X23001073-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92101461","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}