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Research progress in green synthesis of ammonia as hydrogen-storage carrier under‘hydrogen 2.0 economy’

Clean Energy 2023年第1期7卷 116-131页

作者： Ge li Ziran Ma Jia Zhao Jiali Zhou Shengpan Peng yonglong li Baodong Wang National Institute of Clean-and-Low-Carbon Energy Beijing 102211China Industrial Catalysis Institute of Zhejiang University of Technology Hangzhou 310014ZhejiangChina NICE Europe Research GmbH Stockholmer Platz 170173 StuttgartGermany

Hydrogen energy is characterized by its environmental friendliness,high efficiency,lack of carbon emissions and wide range of ***,its transportation and storage are challenges that limit further development of the hydrogen-energy *** is a carbon-free hydrogen-rich *** storage of hydrogen in ammonia has unique advantages of high energy density,easy storage and transportation,reliable safety,a mature industrial foundation and no tail-end carbon ***,industrial ammonia synthesis still heavily relies on the Haber-Bosch process,which accounts for significant energy consumption and greenhouse gas ***,the development of green and sustainable ammonia-synthesis methods is extremely important and ***,ammonia-synthesis technologies such as electrocatalysis,photocatalysis,photoelectrocatalysis and biocatalysis have successfully produced ammonia from nitrogen and water,resulting in lower *** nitrogen-reduction-reaction conditions of these methods are mild and can be carried out under ambient temperatures and atmospheric pressure with low energy ***,these methods bypass the traditional hydrogen-production section and their routes are ***,these technologies can be used to flexibly integrate renewable energy,including intermittent renewable energy,to achieve distributed ammonia *** benefits contribute to both global energy and environmental sustainability *** this study,the mechanisms of ammonia synthesis under ambient conditions are reviewed and the technical difficulties of various catalysts for ammonia synthesis are *** on the optimization strategies reported for various catalysts,the high-performing catalysts reported for ammonia synthesis are reviewed and the developmental trend of this field has been forecasted.

关键词： hydrogen 2.0 economy ammonia synthesis catalyst ambient conditions mechanism

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Announcing the 2022 Best Paper Prize-winners

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Clean Energy 2024年第1期8卷 297-298页

作者： yonglong li Constance Senior National Institute of Clean-and-low-carbon Energy Future Science CityChangping DistrictBeijing 102211China

Clean Energy,with the support of the China Energy Group,is pleased to announce the Clean Energy Best Paper Prizes for *** three prize-winners highlight important and forward-looking research to support a clean and low-carbon energy *** prize Experimental performance analysis of an installed microgrid-based PV/battery/EV grid-connected system.

关键词： connected Clean battery

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Recent progress of amine modified sorbents for capturing CO2 from flue gas

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Chinese Journal of Chemical Engineering 2018年第11期26卷 2292-2302页

作者： Xinglei Zhao Qian Cui BaodengWang Xueliang Yan Surinder Singh Feng Zhang Xing Gao yonglong li National Institute of Clean and Low Carbon Energy (NICE) Beijing 102211 China NICE America Research Mountain View CA USA

Under the Paris agreement, China has committed to reducing CO_2 emissions by 60%–65% per unit of GDP by *** CO_2 emissions from coal-fired power plants currently account for over 30% of the total carbon emissions in China, it will be necessary to mitigate at least some of these emissions to achieve this goal. Studies by the International Energy Agency(IEA) indicate CCS technology has the potential to contribute 14% of global emission reductions, followed by 40% of higher energy efficiency and 35% of renewable energy, which is considered as the most promising technology to significantly reduce carbon emissions for current coal-fired power ***, the announcement of a Chinese national carbon trading market in late 2017 signals an opportunity for the commercial deployment of CO_2 capture ***, the only commercially demonstrated technology for post-combustion CO_2 capture technology from power plants is solvent-based absorption. While commercially viable, the costs of deploying this technology are high. This has motivated efforts to develop more affordable alternatives, including advanced solvents, membranes,and sorbent capture systems. Of these approaches, advanced solvents have received the most attention in terms of research and demonstration. In contrast, sorbent capture technology has less attention, despite its potential for much lower energy consumption due to the absence of water in the sorbent. This paper reviews recent progress in the development of sorbent materials modified by amine functionalities with an emphasis on material characterization methods and the effects of operating conditions on performance. The main problems and challenges that need to be overcome to improve the competitiveness of sorbent-based capture technologies are discussed.

关键词： CO2 sorbent Amine Flue gas CO2 adsorption CO2 regeneration

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Studies on pathways to carbon neutrality for indirect coal liquefaction in China

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Clean Energy 2021年第4期5卷 644-654页

作者： Chufu li yonglong li Ming Xu Yan Gong Siqi Gong Peng Wang Pingping li Binqi Dong Zhuowu Men National Institute of Clean-And-Low-Carbon Energy Beijing102209P.R.China Hydrogen Technology Co. Ltd of China Energy GroupBaoding071700P.R.China

The production capacity of indirect coal liquefaction(ICL)in use in China has reached a level of 8 million t/a,which corresponds to a carbon footprint of>60 million t/*** is facing mountainous pressure to reduce its carbon emissions when its development is planned with carbon neutrality as a background *** paper studies the pathways that can lead to carbon neutrality for ICL in China,constructing four carbon-neutral pathways for ICL systems with the introduction of green hydrogen,biomass as feedstock and with CCS(carbon capture and storage),which can reduce significant carbon emissions from coal-gasification and water-gas shift *** carbon-neutral biomass is used to replace some coal as co-feed to gasification and combustion,leading to reduced carbon emissions as *** and economic analyses are performed on different carbon-reduction pathways using a carbon-neutral ICL system on a 1 million t/a scale as an *** results are that the pathway of direct coal substitution with biomass is the lowest carbon-reduction route at RMB 31-125/t CO_(2),substitution with green hydrogen costs the highest at RMB 84-422/t CO_(2) and CCS costs are in the middle at RMB 96-148/t CO_(2).Each pathway has its pros and cons,and a combination of the three may be used for the best ***,a comprehensive study and systematic summation of the critical technological processes and their underlying challenges for carbon-neutral ICL together with direction for a technological breakthrough are *** ICL carbon-reduction pathways presented in this paper are capable of realizing an integrated development between fossil and renewable energy sources,helping the carbon-intense coal-chemical industries to achieve their goals of carbon peak and carbon neutrality.

关键词： indirect coal liquefaction carbon neutral biomass water electrolysis fuel cell CCUS

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In situ monitoring of Suzuki-Miyaura cross-coupling reaction by using surface-enhanced Raman spectroscopy on a bifunctional Au-Pd nanocoronal film

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Chinese Chemical Letters 2023年第4期34卷 449-452页

作者： Cancan Zhang yonglong li Aonan Zhu ling Yang Xiaomeng Du Yanfang Hu Xian Yang Feng Zhang Wei Xie Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Tianjin Key Lab of Molecular Recognition&BiosensingHaihe Laboratory of Sustainable Chemical TransformationsRenewable Energy Conversion and Storage CenterCollege of ChemistryNankai UniversityTianjin 300071China

Surface-enhanced Raman spectroscopy(SERS), a powerful surface vibrational spectroscopic technique, is ideally suited for in situ monitoring the chemical transformations occurred at surfaces and/or *** in situ SERS monitoring, a platform integrated both plasmonic and catalytic activity is a prerequisite. Here, we fabricate a bifunctional Au-Pd nanocoronal film for in situ SERS monitoring Suzuki-Miyaura cross-coupling reaction. This excellent bifunctional substrate leads to the coupling of high catalytic activity with a strong SERS effect at the center of two adjacent Au cores and shows fine reproducibility and stability of SERS signals. During investigating the Suzuki reaction with in situ SERS, we found two distinct catalytic kinetic processes resulted from two disparate catalytic sites on a Au-Pd nanocoronal. Comparing with conventional analytical techniques, this work provides a novel approach for studying Suzuki reactions at surfaces and/or interfaces with in situ SERS.

关键词： Suzuki-Miyaura cross-coupling reaction Au-Pd SERS In situ monitoring Kinetics

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Boosting Plasmonic Hot Electron Utilization for Visible-light Photocatalysis Using Polarized Ag-TiO_(2) Nanoparticles

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CCS Chemistry 2023年第8期5卷 1908-1916页

作者： yonglong li linfeng Yu Ying Wang Cancan Zhang Yangxuan Gao Teng Wang Wei Xie Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Tianjin Key Laboratory of Biosensing and Molecular RecognitionHaihe Laboratory of Sustainable Chemical TransformationsRenewable Energy Conversion and Storage CenterCollege of ChemistryNankai UniversityTianjin 300071

Plasmonic hot electrons have long been regarded as a promising energy source for inducing chemical ***,because of the mismatch between the electron cloud of reactant molecules and the hot-electron gas of metal nanoparticles(NPs),the highly localized and short-lived hot electrons are dif-ficult to utilize in bulk synthesis when the reactant molecules do not have a strong affinity for the metal ***,we propose the concept of polarized nanocatalysts to mimic chemical polarity at the nanometer *** plasmonic photorecycling conditions,the rationally designed asymmetric Ag-TiO_(2) hybrid NPs enable six-electron reduction of molecules in bulk *** hot-electron-driven reaction does not require a conventional hydrogen or hydride reducing *** a proof-of-concept,one-pot photocatalytic syntheses of amides,such as paracetamol,using nitro reactants were *** provides a new opportunity to enable challenging multielectron transformations in organic chemistry.

关键词： plasmonic catalysis polarized nanoparticles hot electrons multielectron transfer amide synthesis

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Feature Extraction and Diagnosis System Using Virtual Instrument Based on CI

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Journal of Software Engineering and Applications 2010年第2期3卷 177-184页

作者： Renping Shao Xinna Huang yonglong li 不详

Through investigating intelligent diagnosis method of Computational Intelligence (CI) and studying its application in fault feature extraction, a gear fault detection and Virtual Instrument Diagnostic System is developed by using the two hybrid programming method which combines both advantages of VC++ and MATLAB. The interface is designed by VC++ and the calculation of test data, signal processing and graphical display are completed by MATLAB. The pro-gram converted from M-file to VC++ is completed by interface software, and a various multi-functional gear fault di-agnosis software system is successfully obtained. The software system, which has many functions including the intro-duction of gear vibration signals, signal processing, graphical display, fault detection and diagnosis, monitoring and so on, especially, the ability of diagnosing gear faults. The method has an important application in the field of mechanical fault diagnosis.

关键词： Virtual Instrument (VI) Computational Intelligence (CI) Fault Diagnosis Feature Extraction Gear System

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Announcing the 2021 Best Paper Prize Winners

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Clean Energy 2023年第1期7卷 41-41页

作者： li, yonglong Senior, Constance National Institute of Clean-and-low-carbon Energy Future Science City Changping District Beijing 102211 China

Clean Energy,with the support of the China Energy Group,is pleased to announce the Clean Energy Best Paper Prizes for *** editors recognize that Clean Energy has been *** in 2021,we presented three prize winners that ... 详细信息

关键词： Clean looking Best

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Determination of Molecular Weight of FT synthetic wax by MALDI-TOF mass spectrometry

Determination of Molecular Weight of FT synthetic wax by MAL...

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2018年中国质谱学术大会（CMSC2018）

作者： Congyun liu Qingqing Gai linge Ma yonglong li Analytical and Characterization Center National Institute of Clean-and-Low-Carbon Energy

FT Wax is an important coal chemical product which used in a wide range of applications, such as leather shoe oils, waxes products, daily necessities, paints and other aspects. It is mainly composed of straight chain alkanes, and has wider distillation range. It is a high-quality cracking raw material, which can obtain gas and diesel fractions by cracking, so the economic benefit of synthetic wax can be improved [1-2]. It is important to understand the composition in order to improve the added value of FT wax. This paper was aimed to determine the molecular weight of FT wax by MALDI-TOF mass spectrometry. The advantages of MALDI-TOF are: only one molecular ion is formed from each parent molecule, high sensitivity across a broad range of masses, ability to detect compounds of high molecular weight [3]. The wax sample was dissolved in heated CS2 and placed on the MALDI target, and 1μL of the matrix(DCTB) was then mixed in the wax solution. Then the target was introduced into the spectrometer. The spectra were recorded on an Autoflex Speed mass spectrometer from Bruker. The irradiation source was a pulsed nitrogen laser with a wavelength of 337 nm. Measurements were carried out using the following conditions: polarity-positive, flight pathlinear, 19 kV acceleration voltages. The pulsed ion extraction was 130 ns and the global attenuator offset was 30%. Figure 1 is the MALDI-TOF spectrum of FT-wax in the range 350-1200 *** to the results, the mass range was from 350 to1200 Da, the spectrum in the range of 350-550 Da presents a high intensity at m/z 451, 435, 468, the spectrum in the range of 550-850 Da presents a high intensity at m/z 675, 690, 704, this was assigned to a m/z 15 and m/z 16 fragment and indicated the presence of CH3. The spectrum in the range of 850-1200 Da presents a lower intensity. Compared with the results of simulated distillation and carbon distribution, the distillation range was 359-560℃, mainly composed with chain hydrocarbon of C23-C65

关键词： FT synthetic wax MALDI-TOF molecular weight

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Identification and characterization of Fischer-Tropsch oil by using GCxGC-TOF MS

Identification and characterization of Fischer-Tropsch oil b...

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2018年中国质谱学术大会（CMSC2018）

作者： Qingqing Gai Congyun liu linge Ma yonglong li Analytical and Characterization Center National Institute of Clean-and-Low-Carbon Energy

Fischer-Tropsch(FT) synthesis is used as raw material to obtain hydrocarbons and other chemicals. The FT products are usually separated into wax, oil phase, water phase products and tail gas. The analysis of FT products is essential for product quality control, catalyst screening, kinetics study and engineering design. GC with MS or FID detection is the most common technique used to separate product compounds in FT synthesis [1]. It generally delivers good resolution, but separation problems with minor compounds may occur. The GCxGC has the advantage of increasing the resolution and sensitivity because of the re-concentration of the fraction through the modulation process. As the complexity of FT products requires analytical techniques with higher separation power [2], in this context, the benefits of GC×GC compared to one-dimensional GC(1 D-GC) for the investigation of the oil products of FT processes are *** FT oils are relatively simple and composed of mainly primary linear molecules present at percentage levels and very little secondary reaction products. However, a high degree of component co-elution is already observed in 1 DGC analysis(Fig.1). The co-elution is not necessarily the result of the limited peak capacity of the column but rather of a shared physical property. As shown in Fig.2, branched isomers of paraffins, olefins and oxygenates also elute in the same area of the GC chromatogram. GCxGC-TOFMS distinguishes these classes and identify each of the peaks in the chromatogram. Especially ketones, aldehydes, aromatics, ester and alcohols are identified, which are the lowlevel peaks co-eluted in the same region as branched isomers. GC×GC analyses provide valuable information of FT oil and allow the optimization of plant conditions to produce high-value fuels and chemicals.

关键词： Fischer-Tropsch oil comprehensive two-dimensional gas chromatography

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