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学者姓名：黄云云
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Abstract ：
The water gas shift reaction is an important procedure in high-purity hydrogen production, and achieving high CO conversion in one single reactor is a key optimization objective. This work has developed a novel radial flow fixed-bed reactor for water gas shift reaction with integrated variable heat exchange and numerically investigated the system optimization concepts. The continuous heat removal from the catalyst bed has been proven to fully improve CO conversion at a lower H2O/CO molar ratio. The heat transfer rate distribution can also be flexibly adjusted to ensure sufficiently high and low temperatures in the early and late stages of the reaction, respectively, for a higher conversion. With sufficient coolant, low-temperature and high-temperature catalysts for water gas shift reaction can be combined in one reactor to increase CO conversion to over 98%, and the delayed heat removal configuration can achieve the highest CO conversion (98.50%) with the least proportion of low-temperature catalysts (9.2%). © 2024 Hydrogen Energy Publications LLC
Keyword ：
Low temperature production Low temperature production Radial flow Radial flow Water gas shift Water gas shift
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| GB/T 7714 | Huang, Yunyun , Huang, Wenshi , Lin, Li et al. Design of a radial flow fixed-bed reactor with integrated variable heat exchange for more efficient and purer hydrogen production via water gas shift reaction [J]. | International Journal of Hydrogen Energy , 2025 , 99 : 685-696 . |
| MLA | Huang, Yunyun et al. "Design of a radial flow fixed-bed reactor with integrated variable heat exchange for more efficient and purer hydrogen production via water gas shift reaction" . | International Journal of Hydrogen Energy 99 (2025) : 685-696 . |
| APA | Huang, Yunyun , Huang, Wenshi , Lin, Li , Cao, Yanning , Luo, Yu , Lin, Xingyi et al. Design of a radial flow fixed-bed reactor with integrated variable heat exchange for more efficient and purer hydrogen production via water gas shift reaction . | International Journal of Hydrogen Energy , 2025 , 99 , 685-696 . |
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Abstract ：
The water gas shift reaction is an important procedure in high-purity hydrogen production, and achieving high CO conversion in one single reactor is a key optimization objective. This work has developed a novel radial flow fixed-bed reactor for water gas shift reaction with integrated variable heat exchange and numerically investigated the system optimization concepts. The continuous heat removal from the catalyst bed has been proven to fully improve CO conversion at a lower H2O/CO molar ratio. The heat transfer rate distribution can also be flexibly adjusted to ensure sufficiently high and low temperatures in the early and late stages of the reaction, respectively, for a higher conversion. With sufficient coolant, low-temperature and high-temperature catalysts for water gas shift reaction can be combined in one reactor to increase CO conversion to over 98%, and the delayed heat removal configuration can achieve the highest CO conversion (98.50%) with the least proportion of low-temperature catalysts (9.2%).
Keyword ：
Fixed-bed reactor Fixed-bed reactor Integrated heat transfer Integrated heat transfer Radial flow reactor Radial flow reactor Water gas shift reaction Water gas shift reaction
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| GB/T 7714 | Huang, Yunyun , Huang, Wenshi , Lin, Li et al. Design of a radial flow fixed-bed reactor with integrated variable heat exchange for more efficient and purer hydrogen production via water gas shift reaction [J]. | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2025 , 99 : 685-696 . |
| MLA | Huang, Yunyun et al. "Design of a radial flow fixed-bed reactor with integrated variable heat exchange for more efficient and purer hydrogen production via water gas shift reaction" . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 99 (2025) : 685-696 . |
| APA | Huang, Yunyun , Huang, Wenshi , Lin, Li , Cao, Yanning , Luo, Yu , Lin, Xingyi et al. Design of a radial flow fixed-bed reactor with integrated variable heat exchange for more efficient and purer hydrogen production via water gas shift reaction . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2025 , 99 , 685-696 . |
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Ammonia decomposition for onsite hydrogen production has been regarded as an important reaction which links to efficient hydrogen storage, transport and utilization. However, it still remains challenging to develop efficient catalysts with robust stability for ammonia decomposition. Herein, an integrated strategy was employed to synthesize Ru/SiO2@N-CS via wrapping a thin layer of N-doped carbon onto the SiO2 sphere, following the anchor of Ru nanoparticles (NPs) onto the support. The obtained Ru/SiO2@N-CS (Ru loading: 1 wt%) shows a promising performance for ammonia decomposition, reaching 94.5 % at 550 °C with a gas hourly space velocity (GHSV) of 30 000 mL gcat-1h−1. The combination of the SiO2 as the core prevents the degradation of N-doped carbon layers and then enhance the durability of the catalysts, remaining stable after 50 h at evaluated temperatures. Adequate characterizations were used to illustrate the effect of microchemical environment on ammonia decomposition activity of Ru/SiO2@N-CS catalyst under different calcination atmosphere and the correlation between structure and performance. © 2024 Elsevier B.V.
Keyword ：
Ammonia decomposition Ammonia decomposition N-doped carbon N-doped carbon Ruthenium Ruthenium SiO2 SiO2 Stability Stability
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| GB/T 7714 | Huang, Y. , Ren, H. , Fang, H. et al. Ru nanoparticles embedded in Ru/SiO2@N-CS for boosting hydrogen production via ammonia decomposition with robust lifespan [J]. | Applied Surface Science , 2024 , 669 . |
| MLA | Huang, Y. et al. "Ru nanoparticles embedded in Ru/SiO2@N-CS for boosting hydrogen production via ammonia decomposition with robust lifespan" . | Applied Surface Science 669 (2024) . |
| APA | Huang, Y. , Ren, H. , Fang, H. , Ouyang, D. , Chen, C. , Luo, Y. et al. Ru nanoparticles embedded in Ru/SiO2@N-CS for boosting hydrogen production via ammonia decomposition with robust lifespan . | Applied Surface Science , 2024 , 669 . |
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Excessive electric field strength causes the droplets to contact but not coalesce, severely deteriorating the oil-water separation efficiency. The investigation of the non-coalescence of nonidentical droplets in oil under a DC electric field is conducted using high-speed photography. The effects of droplet volume ratio and interfacial tension ratio on the characteristics and critical parameters for droplet non-coalescence are systematically explored. The results show the critical electrocapillary number for the non-coalescence of nonidentical droplets and critical contact cone angle decreases as the volume sum increases or the interfacial tension ratio decreases, which is related to the competition between the resultant electric field force and the interfacial tension force. These results contribute to optimizing the operating parameters of the electric coalescer and improving the oil-water separation efficiency.
Keyword ：
capillary pressure difference capillary pressure difference droplet droplet electric field electric field liquid bridge liquid bridge nonidentical non-coalescence nonidentical non-coalescence
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| GB/T 7714 | Huang, Xin , Chen, Mindan , Huang, Yunyun et al. Non-coalescence of nonidentical droplets in oil under a DC electric field [J]. | AICHE JOURNAL , 2024 , 70 (8) . |
| MLA | Huang, Xin et al. "Non-coalescence of nonidentical droplets in oil under a DC electric field" . | AICHE JOURNAL 70 . 8 (2024) . |
| APA | Huang, Xin , Chen, Mindan , Huang, Yunyun , Luo, Xiaoming , Teng, Lin , Xiao, Longqiang et al. Non-coalescence of nonidentical droplets in oil under a DC electric field . | AICHE JOURNAL , 2024 , 70 (8) . |
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Abstract ：
Ammonia decomposition for onsite hydrogen production has been regarded as an important reaction which links to efficient hydrogen storage, transport and utilization. However, it still remains challenging to develop efficient catalysts with robust stability for ammonia decomposition. Herein, an integrated strategy was employed to synthesize Ru/SiO2@N-CS via wrapping a thin layer of N-doped carbon onto the SiO2 sphere, following the anchor of Ru nanoparticles (NPs) onto the support. The obtained Ru/SiO2@N-CS (Ru loading: 1 wt%) shows a promising performance for ammonia decomposition, reaching 94.5 % at 550 degrees C with a gas hourly space velocity (GHSV) of 30 000 mL gcat-1 h- 1. The combination of the SiO2 as the core prevents the degradation of N-doped carbon layers and then enhance the durability of the catalysts, remaining stable after 50 h at evaluated temperatures. Adequate characterizations were used to illustrate the effect of microchemical environment on ammonia decomposition activity of Ru/SiO2@N-CS catalyst under different calcination atmosphere and the correlation between structure and performance.
Keyword ：
Ammonia decomposition Ammonia decomposition N-doped carbon N-doped carbon Ruthenium Ruthenium Stability Stability
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| GB/T 7714 | Huang, Yunyun , Ren, Hongju , Fang, Huihuang et al. Ru nanoparticles embedded in Ru/SiO2@N-CS for boosting hydrogen production via ammonia decomposition with robust lifespan [J]. | APPLIED SURFACE SCIENCE , 2024 , 669 . |
| MLA | Huang, Yunyun et al. "Ru nanoparticles embedded in Ru/SiO2@N-CS for boosting hydrogen production via ammonia decomposition with robust lifespan" . | APPLIED SURFACE SCIENCE 669 (2024) . |
| APA | Huang, Yunyun , Ren, Hongju , Fang, Huihuang , Ouyang, Dong , Chen, Chongqi , Luo, Yu et al. Ru nanoparticles embedded in Ru/SiO2@N-CS for boosting hydrogen production via ammonia decomposition with robust lifespan . | APPLIED SURFACE SCIENCE , 2024 , 669 . |
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Ammonia is an exceptional fuel for solid oxide fuel cells (SOFCs), because of the high content of hydrogen and the advantages of carbon neutrality. However, the challenge lies in its unsatisfactory performance at intermediate temperatures (500-600 degrees C), impeding its advancement. An electrolyte-supported proton-ceramic fuel cell (PCFC) was fabricated employing BaZr0.1Ce0.7Y0.2O3-delta (BZCY) as the electrolyte and Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) as the cathode. In this study, the performance of PCFC using NH3 as fuel within an operating temperature range of 500-700 degrees C was improved by adding an M(Ni,Ru)/CeO(2 )catalyst layer to reconstruct the anode surface. The electrochemical performance of direct ammonia PCFC (DA-PCFC) were improved to different extents. Compared to H-2 as fuel, the degradation ratio of peak power densities (PPDs) of Ni/CeO2-loaded PCFC fueled with NH3 decreased at 700-500 degrees C, with a decrease to 13.3% at 700 degrees C and 30.7% at 500 degrees C. The findings indicate that Ru-based catalysts have a greater promise for direct ammonia SOFCs (DA-SOFCs) at operating temperatures below 600 degrees C. However, the enhancement effect becomes less significant above 600 degrees C when compared to Ni-based catalysts.
Keyword ：
ammonia ammonia anode anode M/CeO2 catalyst layer M/CeO2 catalyst layer proton-ceramic fuel cell (PCFC) proton-ceramic fuel cell (PCFC)
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| GB/T 7714 | Li, Xiaoxiao , Chen, Jiangping , Huang, Yunyun et al. Performance-enhanced direct ammonia protonic ceramic fuel cells using CeO2-supported Ni and Ru catalyst layer [J]. | FRONTIERS IN ENERGY , 2024 , 18 (6) : 875-884 . |
| MLA | Li, Xiaoxiao et al. "Performance-enhanced direct ammonia protonic ceramic fuel cells using CeO2-supported Ni and Ru catalyst layer" . | FRONTIERS IN ENERGY 18 . 6 (2024) : 875-884 . |
| APA | Li, Xiaoxiao , Chen, Jiangping , Huang, Yunyun , Fang, Huihuang , Chen, Chongqi , Zhong, Fulan et al. Performance-enhanced direct ammonia protonic ceramic fuel cells using CeO2-supported Ni and Ru catalyst layer . | FRONTIERS IN ENERGY , 2024 , 18 (6) , 875-884 . |
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The oxygen hopping through oxygen defect site plays an extremely important role in cathode catalysts of solid oxide fuel cells (SOFC) application. Herein, a dual Ni2+/Ni3+ and Mn2+/Mn3+/Mn4+ redox pairs strategy is developed to construct a series of defective spinel Mg0.4NixMn2.6-xO4+delta (abbreviated MN(x)MO) to gain insights in terms of oxygen nonstoichiometry. By regulating the stoichiometric proportion of Ni and Mn, it is possible to optimize electronic conductivity and oxygen-vacancy concentration. The optimized MN(1.4)MO provides electrical conductivity as high as 68 Smiddotcm-1 at 800 degrees C, 2.72 folds that of MN(1.0)MO. Based on oxygen transport performance, the surface exchange coefficient of MN(1.4)MO at 900 degrees C is 162 folds that of commercial La0.7Sr0.3MnO3-delta (LSM). When a MN(1.4)MO cathode was used, the resulted SOFC exhibited extraordinarily high maximum power density of 0.34 Wmiddotcm-2 at 600 degrees C and 2.02 Wmiddotcm-2 at 800 degrees C. To the best of our knowledge, the performance is the best among the spinel-based cathodes ever reported for SOFC application. Endowed with optimal properties, MN(1.4)MO-based SOFC displays peak power density which is 2.27 and 1.44 folds that of LSM-based SOFC at 600 degrees C and 800 degrees C, respectively. A test of 50 h revealed the MN(1.4)MO-based SOFC is remarkably stable at 800 degrees C, continuously offering 2.02 Wmiddotcm-2 at 0.5 V. The excellent performance and stability of MN(1.4)MO-based SOFC suggests that MN(1.4)MO is a promising cathode material for the development of intermediate temperature SOFC technology.(c) 2022 Published by Elsevier B.V.
Keyword ：
Kinetics analysis Kinetics analysis Oxygen reduction reaction Oxygen reduction reaction Oxygen transport Oxygen transport SOFC SOFC Spinel oxides Spinel oxides
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| GB/T 7714 | Zhong, Fulan , Wang, Xinmin , Han, Cheng et al. Tailoring dual redox pairs strategy on a defective spinel Mg0.4NixMn2.6-xO4+delta cathode for the boosting of SOFCs performance [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2023 , 939 . |
| MLA | Zhong, Fulan et al. "Tailoring dual redox pairs strategy on a defective spinel Mg0.4NixMn2.6-xO4+delta cathode for the boosting of SOFCs performance" . | JOURNAL OF ALLOYS AND COMPOUNDS 939 (2023) . |
| APA | Zhong, Fulan , Wang, Xinmin , Han, Cheng , Fang, Huihuang , Huang, Yunyun , Luo, Yu et al. Tailoring dual redox pairs strategy on a defective spinel Mg0.4NixMn2.6-xO4+delta cathode for the boosting of SOFCs performance . | JOURNAL OF ALLOYS AND COMPOUNDS , 2023 , 939 . |
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Nano coatings for anti-corrosion and electromagnetic wave absorbing can simultaneously implement the functions of assimilating electromagnetic waves and reducing the corrosion of materials caused by corrosive environments, such as seawater. In this work, a composite material for both electromagnetic wave absorption and anti-corrosion was prepared by an in-situ chemical oxidation and surface coating method using carbonyl iron powder (CIP), graphene oxide (GO) and aniline (AN). The synthesized composite material was characterized by scanning electron microscopy (SEM), infrared spectroscopy (FT-IR) and XRD. The carbonyl iron powder-graphene oxide-polyaniline (CIP-GO-PANI) composite material was used as the functional filler, and the epoxy resin was the matrix body for preparing the anticorrosive wave-absorbing coating. The results show that CIP had strong wave-absorbing properties, and the anti-corrosion property was greatly enhanced after being coated by GO-PANI.
Keyword ：
anti corrosion anti corrosion carbonyl iron powder carbonyl iron powder graphene oxide graphene oxide polyaniline polyaniline wave absorbing wave absorbing
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| GB/T 7714 | Huang, Yun-Yun , Wu, Jian . Preparation and Characterization of Graphene Oxide/Polyaniline/Carbonyl Iron Nanocomposites [J]. | MATERIALS , 2022 , 15 (2) . |
| MLA | Huang, Yun-Yun et al. "Preparation and Characterization of Graphene Oxide/Polyaniline/Carbonyl Iron Nanocomposites" . | MATERIALS 15 . 2 (2022) . |
| APA | Huang, Yun-Yun , Wu, Jian . Preparation and Characterization of Graphene Oxide/Polyaniline/Carbonyl Iron Nanocomposites . | MATERIALS , 2022 , 15 (2) . |
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To address the challenging issues of metal materials corrosion in industries, which has caused huge economic losses and security threats to many facilities in marine environments, functional polymer coatings have been widely used and regarded as one of the simplest and most effective methods to prevent such an undesirable event. In this study, a new type of coating filler consisting of graphene oxide/polyaniline/polydopamine (GO-PANI-PDA) nanocomposites has been successfully synthesized. The morphology, structure, composition, and corrosion resistance performance of the GO-PANI-PDA (GPP) nanocomposites were investigated via a series of characterization methods. The results from our electrochemical impedance spectroscopy, potentiodynamic polarization curve and salt spray experiment showed that the best corrosion resistance performance of the coating is from GPP 21 with the epoxy/GO-PANI:PDA ratio of 2:1, which exhibited a positive corrosion potential (-0.51 V) shift from epoxy/GO-PANI coating (-0.64 V). The corrosion current density (3.83 x 10(-8) A/cm(2)) of GPP 21 is nearly an order of magnitude lower than that of epoxy/GO-PANI (7.05 x 10(-7) A/cm(2)). The good anti-corrosion performance was fascinatingly observed in salt spray tests even without obvious corrosion phenomenon after 30 days of testing. Due to these remarkable properties, GPP nanocomposites can be an outstanding candidate for the rapid development of broadband shielding and anticorrosive materials.
Keyword ：
anti-corrosion anti-corrosion graphene oxide graphene oxide polyaniline polyaniline polydopamine polydopamine polymer coatings polymer coatings
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| GB/T 7714 | Huang, Yunyun , Zhang, Borui , Wu, Jian et al. Preparation and Characterization of Graphene Oxide/Polyaniline/Polydopamine Nanocomposites towards Long-Term Anticorrosive Performance of Epoxy Coatings [J]. | POLYMERS , 2022 , 14 (16) . |
| MLA | Huang, Yunyun et al. "Preparation and Characterization of Graphene Oxide/Polyaniline/Polydopamine Nanocomposites towards Long-Term Anticorrosive Performance of Epoxy Coatings" . | POLYMERS 14 . 16 (2022) . |
| APA | Huang, Yunyun , Zhang, Borui , Wu, Jian , Hong, Ruoyu , Xu, Jinjia . Preparation and Characterization of Graphene Oxide/Polyaniline/Polydopamine Nanocomposites towards Long-Term Anticorrosive Performance of Epoxy Coatings . | POLYMERS , 2022 , 14 (16) . |
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Conductive elastomer materials based on carbon black (CB) filled bromo-isobutylene-isoprene rubber (BIIR)/polypropylene (PP) thermoplastic vulcanizate (TPV) were prepared by two step method and one step method. The microstructure, mechanical properties, electrical resistivity, thermal stability, electromagnetic interference shielding performance, and fracture surface morphology of composite materials were studied. The result shows the serious aggregation of CB in one-step TPV, but the uniform dispersion of CB in two-step TPV. In addition, the two-step TPV shows a higher electromagnetic interference (EMI) shielding performance and lower conductivity penetration threshold. The penetration threshold of the two-step TPV is 9.1%, and the maximum reflection loss of the two-step TPV16 is -29.5 dB. Therefore, this research offers an uncomplicated and scalable melt mixing approach method to manufacture conductive thermoplastic vulcanizates with excellent EMI shielding.
Keyword ：
BIIR BIIR CB CB electrical properties electrical properties EMI EMI PP PP TPV TPV
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| GB/T 7714 | Huang, Yunyun , Liu, Zhi , Xu, Hongyan et al. Conductive thermoplastic vulcanizates based on carbon black-filled bromo-isobutylene-isoprene rubber (BIIR)/polypropylene (PP) [J]. | REVIEWS ON ADVANCED MATERIALS SCIENCE , 2021 , 60 (1) : 303-312 . |
| MLA | Huang, Yunyun et al. "Conductive thermoplastic vulcanizates based on carbon black-filled bromo-isobutylene-isoprene rubber (BIIR)/polypropylene (PP)" . | REVIEWS ON ADVANCED MATERIALS SCIENCE 60 . 1 (2021) : 303-312 . |
| APA | Huang, Yunyun , Liu, Zhi , Xu, Hongyan , Hong, Ruoyu . Conductive thermoplastic vulcanizates based on carbon black-filled bromo-isobutylene-isoprene rubber (BIIR)/polypropylene (PP) . | REVIEWS ON ADVANCED MATERIALS SCIENCE , 2021 , 60 (1) , 303-312 . |
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