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Reductive depolymerization of lignin by bifunctional Ru-based catalysts supported on tungstated-zirconia

Discover Catalysis 2025年第1期2卷 1-13页

作者： Yang, Xiaojun Rawat, Shivam Feng, Maoqi Yang, Rui Wu, Xiaoyu Cote, Elizabeth E. Xiao, Dequan Yang, Bin Bioproducts Sciences and Engineering Laboratory Department of Biological Systems Engineering Washington State University Richland USA Center for Integrative Materials Discovery Department of Chemistry and Chemical and Biomedical Engineering University of New Haven West Haven USA

Lignin depolymerization is crucial for producing fuels and chemicals. Catalytic hydrodeoxygenation offers a distinct method for lignin depolymerization, leading to improved bio-oil conversion yields. This approach involves breaking C-O bonds, hydrogenating rings, and opening rings. In this study, Ru-based bifunctional catalysts with a low Ru metal loading of 0.2 to 0.5 wt.% on tungstated zirconia (Ru/W-Zr-O) were investigated for the ring hydrogenation and hydrogenolysis of lignin model compounds (β-hydroxypropiovanillone and guaiacol) as well as corn stover lignin. The Ru/W-Zr-O catalyst exhibited similar selectivity for ring hydrogenation as the Ru/Al2O3 catalyst. However, Ru/W-Zr-O consistently demonstrated high selectivity for ring-opening hydrogenation products (e.g., linear alkanes) from the model compounds and lignin, particularly in ethanol compared to water. "The highest selectivity towards long-chain alkanes in bio-oil was 79.4%, with an overall lignin conversion rate of 90.6%. By comparing and analyzing experimental data with the activation energies of bonds in lignin model compounds using density functional theory, the reaction mechanism was determined to follow this route: 'aromatics → cyclic hydrocarbon → linear hydrocarbon.' By optimizing the characteristics of bifunctional catalysts and solvents, this work suggests the potential for designing effective catalysts supported on tungstated zirconia for the selective hydrogenolysis of lignin into long-chain alkanes.

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Fire Test of an Equipment for Hydrogen Powered Aircraft 11

Fire Test of an Equipment for Hydrogen Powered Aircraft

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11th IEEE International Workshop on Metrology for AeroSpace, MetroAeroSpace 2024

作者： Rogalski, Tomasz Pieniazek, Jacek Ciecinski, Piotr Szukiewicz, Miroslaw Drajewicz, Marcin Chmiel-Szukiewicz, Elzbieta Smusz, Robert Rzeszow University of Technology Department of Avionics and Control Systems Rzeszow Poland Rzeszow University of Technology Department of Chemical and Process Engineering Rzeszow Poland Rzeszow University of Technology Department of Materials Science Rzeszow Poland Rzeszow University of Technology Department of Organic Chemistry Rzeszow Poland Rzeszow University of Technology Department of Thermadynamics Rzeszow Poland

ISBN: (纸本)9798350385045

Hydrogen fuel for aviation is a new idea. Its successful implementation requires new research and new technologies. One of them is the verification of the operation of the devices and their survivability in a hydrogen flame. The main topic of the article is the development of the hydrogen research and testing laboratory. Testing the flammability of hydrogen-containing systems is a challenge due to the very high explosiveness. The need to ensure the safety of both personnel and buildings means that the preparation of a stand for testing the flammability of aircraft systems should be treated differently from before. The article presents the design of a stand for fire resistance tests. Tests of fire resistance of various elements of aircraft systems, which in the event of an accident may be within the range of the hydrogen flame and elements of the hydrogen installation itself, are the main applications of the presented laboratory stand. © 2024 IEEE.

关键词： Heat flux

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An Interpretable Light Attention-Convolution-Gate Recurrent Unit Architecture for the Highly Accurate Modeling of Actual chemical Dynamic Processes

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engineering 2024年第8期39卷 104-116页

作者： Yue Li Ning Li Jingzheng Ren Weifeng Shen School of Chemistry and Chemical Engineering Chongqing UniversityChongqing 400044China Chongqing Key Laboratory of Catalysis and New Environmental Materials School of Environment and ResourcesChongqing Technology and Business UniversityChongqing 400067China Department of Industrial and Systems Engineering The Hong Kong Polytechnic UniversityHong Kong 999077China

To equip data-driven dynamic chemical process models with strong interpretability,we develop a light attention–convolution–gate recurrent unit(LACG)architecture with three sub-modules—a basic module,a brand-new light attention module,and a residue module—that are specially designed to learn the general dynamic behavior,transient disturbances,and other input factors of chemical processes,*** with a hyperparameter optimization framework,Optuna,the effectiveness of the proposed LACG is tested by distributed control system data-driven modeling experiments on the discharge flowrate of an actual deethanization *** LACG model provides significant advantages in prediction accuracy and model generalization compared with other models,including the feedforward neural network,convolution neural network,long short-term memory(LSTM),and ***,compared with the simulation results of a deethanization model built using Aspen Plus Dynamics V12.1,the LACG parameters are demonstrated to be interpretable,and more details on the variable interactions can be observed from the model parameters in comparison with the traditional interpretable model *** contribution enriches interpretable machine learning knowledge and provides a reliable method with high accuracy for actual chemical process modeling,paving a route to intelligent manufacturing.

关键词： Interpretable machine learning Light attention-convolution-gate recurrent unit architecture Process knowledge discovery Data-driven process model Intelligent manufacturing

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Influence of the Inclination Angle on Mixed Convection and Heat Transfer in a“T”Shaped Double Enclosure

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Fluid Dynamics & materials Processing 2023年第7期19卷 1753-1774页

作者： M’Barka Mourabit Meryam Meknassi Soukaina Fekkar Soumia Mordane Hicham Rouijaa El Alami Semma Polymer Physics and Critical Phenomena Laboratory Department of PhysicsFaculty of Sciences of Ben M’SikHassanⅡUniversityCasablancaMorocco Laboratory of Control and Mechanical Characterization of Materials and Structures National Higher School of Electricity and MechanicsHassanⅡUniversityCasablancaMorocco Laboratory of Electrical Systems and Telecommunications Department of Applied PhysicsFSTHassan 1^(st)UniversitySettatMorocco Laboratory of Engineering Industrial Management and Innovation FSTHassan 1^(st)UniversitySettatMorocco

The effect of the tilt angle on mixed convection and related heat transfer in a“T”shaped double enclosure with four heated obstacles on the bottom surface is numerically *** considered obstacles are constantly kept at a relatively high(fixed)temperature,while the cavity’s upper wall is *** finite volume approach is used to solve the mass,momentum,and energy equations with the SIMPLEC algorithm being exploited to deal with the pressure-velocity *** is put on the influence of the tilt angle on the solution symmetry,flow structure,and heat exchange through the *** following parameters and related ranges are considered:Rayleigh number 104≤Ra≤5.105,tilt angle 0°≤φ≤90°,Reynolds number 100≤Re≤1000,Prandtl number Pr=0.72,block height B=0.5,opening width C=0.15,and distance between blocks D=*** results reveal different branches of solutions on varying Re andφ.They also show that the symmetry of the solution regarding the P_(2)axis is retained for all cases with no tilt and for values of Re between 100 and 1000.

关键词： Mixed convection heat transfer inclination angle “T”shaped double cavity

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Multivalent Display of Lipophilic DNA Binders for Dual-Selective Anti-Mycobacterium Peptidomimetics with Binary Mechanism of Action

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CCS Chemistry 2022年第11期4卷 3573-3586页

作者： Jianxue Wang Junfeng Song Xianhui Chen Rey-Ting Guo Yingjie Wang Guopu Huang Nan Zheng Peilei Hu Xinxin Feng Yugang Bai State Key Laboratory of Chem-/Bio-Sensing and Chemometrics Hunan Provincial Key Laboratory of Biomacromolecular Chemical BiologySchool of Chemistry and Chemical EngineeringHunan UniversityChangshaHunan 410082 State Key Laboratory of Biocatalysis and Enzyme Engineering School of Life SciencesHubei UniversityWuhanHubei 430062 Institute of Systems and Physical Biology Shenzhen Bay LaboratoryShenzhenGuangdong 518055 Department of Polymer Science and Engineering School of Chemical EngineeringDalian University of TechnologyDalianLiaoning 116024 Hunan Institute for Tuberculosis Control Hunan Chest HospitalChangshaHunan 410013

We made oligoamidine-based peptidomimetics highly specific for mycobacteria eradication by introducing and arraying lipophilic DNA binding motifs on macromolecular *** short poly(amidino-phenylindole)(PAPI)structures feature an alternating amphiphilic structure with cationic,lipophilic DNA-binding moieties,enabling fast and selective eradication of mycobacteria through binary,membrane-and DNA-selective mechanisms of *** importantly,PAPIs address the primary treatment challenge by combating mycobacteria in eukaryotic cells and working as a sensitizer for conventional antibiotics,in bothways promoting more thorough removal of pathogens and reducing the mycobacteria’s resistance generation rate during *** optimizationwas achieved to counter specific pathogens,including Mycobacterium tuberculosis,in the Mycobacterium *** of the hit peptidomimetics was evaluated in a zebrafish-based aquatic infection model using Mycobacterium fortuitum and a mice tail infection model using Mycobacterium marinum,both revealing excellent in vivo performance.

关键词： peptidomimetic mycobacteria antimicrobial membrane disruption DNA binding

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A visible-light-driven CoS_(2)/CuS@CNT-C_(3)N_(4)photocatalyst for high-performance rechargeable zinc-air batteries beyond 500 mW cm^(-2)

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Chinese Journal of Catalysis 2025年第1期68卷 300-310页

作者： Yang Zhang Nengneng Xu Bingbing Gong Xiaoxiao Ye Yi Yang Zhaodi Wang Biyan Zhuang Min Wang Woochul Yang Guicheng Liu Joong Kee Lee Jinli Qiao State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Environmental Science and EngineeringDonghua UniversityShanghai 201620China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China School of Chemical Engineering and Technology Xinjiang UniversityUrumqi 830017XinjiangChina School of Chemistry and Chemical Engineering Yancheng Institute of TechnologyYancheng 224051JiangsuChina Department of Physics Dongguk UniversitySeoul 04620Korea School of Energy Power and Mechanical Engineering North China Electric Power UniversityBeijing 102206China Department of Chemical&Biochemical Eng Gachon UniversitySeongnam-si 13120Korea

Storing solar energy in battery systems is crucial to achieving a green and sustainable ***,the efficient development of photo-enhanced zinc-air batteries(ZABs)is limited by the rapid recombination of photogenerated carriers on the *** this work,the visible-light-driven CoS_(2)/CuS@CNT-C_(3)N_(4)photocatalyst with unique petal-like layer structure was designed and developed,which can be used as air electrode for visible-light-driven *** superior performance of ZABs assembled by CoS_(2)/CuS@CNT-C_(3)N_(4)was mainly attributed to the successful construction of Schottky heterojunction between g-C_(3)N_(4)and carbon nanotubes(CNTs),which accelerates the transfer of electrons from g-C_(3)N_(4)to CoS_(2)/CuS cocatalysts,improves the carrier separation ability,and extends the carrier ***,the visible-driven ZABs assembled by CoS_(2)/CuS@CNT-C_(3)N_(4)photocatalyst has a power density of 588.90 mW cm^(-2) and a charge-discharge cycle of 643 h under visible light irradiation,which is the highest performance ever reported for photo-enhanced *** importantly,the charge-discharge voltage drop of ZABs was only 0.54 V under visible light irradiation,which is significantly lower than the voltage drop(0.94 V)in the *** study provides a new idea for designing efficient and stable visible-light-driven ZABs cathode catalysts.

关键词： Visible-light-driven CoS_(2)/CuS@CNT-C_(3)N_(4)photocatalyst Zinc-air battery Heterojunction Photogenerated carriers

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3D bioprinting of in vitro porous hepatoma models:establishment,evaluation,and anticancer drug testing

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bio-Design and Manufacturing 2024年第2期7卷 137-152页

作者： Xiaoyuan Wang Zixian Liu Qianqian Duan Boye Zhang Yanyan Cao Zhizhong Shen Meng Li Yanfeng Xi Jianming Wang Shengbo Sang Shanxi Key Laboratory of Micro Nano Sensors and Artificial Intelligence Perception College of Electronic Information and Optical EngineeringTaiyuan University of TechnologyTaiyuan 030024China Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education Taiyuan University of TechnologyTaiyuan 030024China Shanxi Institute of 6D Artificial Intelligence Biomedical Science Taiyuan 030031China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030024China Department of Pathology Shanxi Provincial Cancer HospitalTaiyuan 030024China General Hospital of Taiyuan Iron and Steel Company Taiyuan 030809China

Traditional tumor models do not tend to accurately simulate tumor growth in vitro or enable personalized treatment and are particularly unable to discover more beneficial targeted *** address this,this study describes the use of threedimensional(3D)bioprinting technology to construct a 3D model with human hepatocarcinoma SMMC-7721 cells(3DP-7721)by combining gelatin methacrylate(GelMA)and poly(ethylene oxide)(PEO)as two immiscible aqueous phases to form a bioink and innovatively applying fluorescent carbon quantum dots for long-term tracking of *** GelMA(10%,mass fraction)and PEO(1.6%,mass fraction)hydrogel with 3:1 volume ratio offered distinct pore-forming characteristics,satisfactorymechanical properties,and biocompatibility for the creation of the 3DP-7721 *** analysis and quantitative real-time fluorescence polymerase chain reaction(PCR)were used to evaluate the biological properties of the *** with the two-dimensional culture cell model(2D-7721)and the 3D mixed culture cell model(3DM-7721),3DP-7721 significantly improved the proliferation of cells and expression of tumor-related proteins and ***,we evaluated the differences between the three culture models and the effectiveness of antitumor drugs in the three models and discovered that the efficacy of antitumor drugs varied because of significant differences in resistance proteins and genes between the three *** addition,the comparison of tumor formation in the three models found that the cells cultured by the 3DP-7721 model had strong tumorigenicity in nude *** evaluation of the levels of biochemical indicators related to the formation of solid tumors showed that the 3DP-7721 model group exhibited pathological characteristics of malignant tumors,the generated solid tumors were similar to actual tumors,and the deterioration was *** research therefore acts as a foundation for the application of 3DP-7721 models in drug devel

关键词： 3D bioprinting Hepatoma tumor models Drug screening Antitumor drug development

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Graphene-nickel nitride hybrids supporting palladium nanoparticles for enhanced ethanol electrooxidation

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Journal of Energy Chemistry 2021年第4期30卷 48-54页

作者： Tong Wu Xiao Wang Ahmet Emrehan Emre Jinchen Fan Yulin Min Qunjie Xu Shigang Sun Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power Shanghai Engineering Research Center of Energy-Saving in Heat Exchange SystemsShanghai University of Electric PowerShanghai 200090China Department of Chemical Engineering and Biointerfaces Institute University of MichiganAnn Arbor 48109MIUnited States Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China State Key Laboratory of Physical Chemistry of Solid Surfaces Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005FujianChina

Electrocatalysts for ethanol oxidation reaction(EOR)are generally limited by their poor durability because of the catalyst poisoning induced by the reaction intermediate carbon monoxide(CO).Therefore,the rapid oxidation removal of CO intermediates is crucial to the durability of EOR-based ***,in order to effectively avoiding the catalyst CO poisoning and improve the durability,the graphene-nickel nitride hybrids(AG-Ni_(3)N)were designed for supporting palladium nanoparticles(Pd/AG-Ni_(3)N)and then used for ethanol *** density functional theory(DFT)calculations demonstrated the introduction of AG-Ni_(3)N depresses the CO absorption and simultaneously promotes the adsorption of OH species for CO oxidation *** fabricated Pd/AG-Ni_(3)N catalyst distinctively exhibits excellent electroactivity with the mass catalytic activity of 3499.5 m A mg^(-1) on EOR in alkaline media,which is around 5.24 times higher than Pd/C(commercial catalyst).Notably,the Pd/AG-Ni_(3)N hybrids display excellent stability and durability after chronoamperometric measurements with a total operation time of 150,000 s.

关键词： Graphene Pd nanoparticles Nickel nitride Ethanol electrooxidation

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Pyrolysis behaviour and kinetic analysis of waste polylactic acid composite reinforced with reed straw processing residue

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Carbon Resources Conversion 2024年第3期7卷 74-83页

作者： Bo Chen Sen Ma Sachin Kumar Zhitong Yao Wanqi Feng Jianbo Zhao Xu Zhang Di Cai Hui Cao Ian Watson Systems Power and Energy Research DivisionJames Watts School of EngineeringCollege of Science and EngineeringJames Watt SouthUniversity of GlasgowGlasgow G128QQUnited Kingdom College of Life Science and Technology Beijing University of Chemical TechnologyBeijing 100029PR China College of Energy State Key Laboratory of Physical Chemistry of Solid SurfacesXiamen UniversityXiamen 361102PR China Department of Energy Engineering Centre of Excellence-Green and Efficient Energy Technology(CoE-GEET)Central University of JharkhandRanchi 835205India College of Materials Science and Environmental Engineering Hangzhou Dianzi UniversityHangzhou 310018PR China College of Chemistry and Chemical Engineering Tarim UniversityAlarXinjiang 843300PR China National Energy R&D Center for Biorefinery Beijing University of Chemical TechnologyBeijing 100029PR China

The lignocellulose reinforced composites are commonly used sustainable materials with good mechanical and physical *** to properly dispose and recover the potential value of discarded lignocellulose reinforced composites,the pyrolysis behaviour and kinetics of reed straw processing residual/polylactic acid(RSPR/PLA)composites,a typical 3D printing material,was *** on the TG-FTIR results,the synergistic effects between RSPR and PLA during the pyrolysis process were *** with the FTIR spectra of PLA,the absorption peaks of CO and CO_(2)disappear in the FTIR spectra of RSPR/PLA composite,which indicates RSPR provides additional free radicals for the free radical reaction of PLA,and further promoting the *** apparent activation energy of the RSPR/PLA composite pyrolysis was calculated by two iso-conversional methods including Flynn-Wall-Ozawa(FWO)and Kissinger-Akahira-Sunose(KAS).The average Ea of the RSPR/PLA composite(122.6 kJ mol^(-1)(FWO)and 117.9 kJ mol^(-1)(KAS))was lower than that of solo pyrolysis of RSPR(138.5 kJ mol^(-1)(FWO)and 135.4 kJ mol^(-1)(KAS))and the pure PLA(197.0 kJ mol^(-1)(FWO)and 196.6 kJ mol^(-1)(KAS)).The master plot method results suggested the pyrolysis of RSPR/PLA composite followed the one-dimensional(D1)diffusion *** work provides an environmentally friendly strategy to effective thermo-chemical upgrading of the value of discarded lignocellulose reinforced composite material.

关键词： biobased composite Pyrolysis conversion Synergy bio-oil Reaction kinetics

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Improved Ductility by Reducing Powder Size in Laser Powder Bed Fusion of AlSi10Mg

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Additive Manufacturing Frontiers 2024年第1期3卷 160-172页

作者： Fuzhong Chu Haopeng Shen Jianwen Li Juan Hou Kai Zhang Zongyan Zhou Yuman Zhu Xinhua Wu Aijun Huang ARC Research Hub for Computational Particle Technology Department of Chemical and Biological EngineeringMonash UniversityClaytonVIC 3800Australia Monash Centre for Additive Manufacturing Monash UniversityNotting HillVIC 3168Australia Department of Materials Science and Engineering Monash UniversityClaytonVIC 3800Australia School of Materials and Chemistry University of Shanghai for Science and TechnologyShanghai200093China Jiangxi Provincial Key Laboratory for Simulation and Modelling of Particulate Systems Jiangxi University of Science and TechnologyNanchang330013China

Strict control of powder properties,especially particle size distribution(PSD),is critical in the laser powder bed fusion(LPBF)process to ensure the quality of the fabricated *** work shows that reducing the powder size could improve the ductility of LPBF fabricated *** tensile elongation increased from 4.1%to 8.8%when AlSi10Mg powder sizes(D50 value)decreased from 76μm to 16μm in the as-fabricated *** results showed that fine powder size stimulates epitaxial grain growth due to excessive *** presence of epitaxial columnar grains makes the crack path across inner melt pools more frequent and travels from the coarse melt pool zones to the fine melt pool *** work suggests that powder size is a crucial factor to be considered in maintaining repeatable mechanical properties in LPBF processes,particularly when ductility and ductility-dominated properties are critical.

关键词： Particle size distribution Laser powder bed fusion Ductility Epitaxial columnar grain

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