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| 1 | Effect of manganese on the catalytic performance of an iron-manganese bimetallic catalyst for light olefin synthesis显示文摘A systematic study was carried out to investigate the promotion effect of manganese on the performance of a coprecipitated iron-manganese bimetallic catalyst for the light olefins synthesis from syngas. The catalyst samples were characterized by N2 physisorption, transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), powder X-ray diffraction (XRD), Mo¨ssbauer spectroscopy, H2-differential thermogravimetric analysis (H2-DTG), CO temperature-programmed reduction (CO-TPR) and CO2 temperature-programmed desorption (CO2-TPD). The Fischer-Tropsch synthesis (FTS) performance of the catalyst was measured at 1.5 MPa, 250 C and syngas with H2 /CO ratio of 2.0. The characterization results indicated that the addition of manganese decreases the catalyst crystallite size, and improves the catalyst BET surface area and pore volume. The presence of manganese suppresses the catalyst reduction and carburization in H2 , CO and syngas, respectively. The addition of manganese improves the catalytic activity of water-gas shift reaction and suppresses the oxidation of iron carbides in the FTS reaction. The incorporation of manganese improves the catalyst surface basicity and results in a significant improvement in the selectivities to light olefins and heavy hydrocarbons (C5+ ), and furthermore an inhibition of methane formation in FTS. The pure iron catalyst (Mn-00) has the highest initial FTS catalytic activity (65%) and the lowest selectivity (17.35 wt%) to light olefins (C=2-C=4 ). The addition of an appropriate amount of manganese can improve the catalyst FTS activity. | Tingzhen Li Hulin Wang Yong Yang Hongwei Xiang Yongwang Li | 2013 | Journal of Energy Chemistry2013，22，4： | 14 |
| 2 | Research on Inheritance and Innovation of Children's Folk Sports Culture in the Junction Area Between Chongqing and Hubei显示文摘This paper examines the current status and development dilemma of the children’s folk sports culture in the junction area between Chongqing and Hubei with reference to relevant literature.After the literature review and summary,the study finds there are several factors restricting the inheritance and development of the children’s folk sports culture in the area,including insufficiency of theoretical analysis,weak public support in cities,blind imitation of modern sports culture,and absence of policy support.To address the above problems,we put forward several suggestions to promote the inheritance and development of children’s folk sports game culture.First,we should focus on the theoretical research and cultural dissemination of children’s folk sports culture.Second,we should improve the basic rules of children’s folk sports games.Third,importance should be attached to government support in developing children’s folk sports game culture.Fourth,we should ensure the continuation and inheritance of children’s folk sports culture via school activities.Finally,we should carry forward children’s folk sports culture and explore ways to develop excellent cultural tourism. | Huang Shanying Ye Qiong Xiang Hulin | 2023 | Contemporary Social Sciences2023，8，2： | 0 |
| 3 | CaF_(2):A novel electrolyte for all solid-state electrochromic devices显示文摘The energy consumption in building ventilation,air,and heating conditioning systems,accounts for about 25%of the overall energy consumption in modern society.Therefore,cutting carbon emissions and reducing energy consumption is a growing priority in building construction.Electrochromic devices(ECDs)are considered to be a highly promising energy-saving technology,due to their simple structure,active control,and low energy input characteristics.At present,Hþ,OH-and Liþare the main electrolyte ions used for ECDs.However,Hþand OH-based electrolytes have a high erosive effect on the material surface and have a relatively short lifetime.Liþ-based electrolytes are limited due to their high cost and safety concerns.In this study,inspired by prior research on Ca^(2+)þbatteries and supercapacitors,CaF_(2)films were prepared by electron beam evaporation as a Ca^(2+)þ-based electrolyte layer to construct ECDs.The structure,morphology,and optical properties of CaF_(2)films were characterized.ECDs with the structure of ITO(indium tin oxide)glass/WO3/CaF_(2)/NiO/ITO show short switching times(22.8 s for the coloring process,2.8 s for the bleaching process).Additionally,optical modulation of the ECDs is about 38.8%at 750 nm.These findings indicate that Ca^(2+)þbased ECDs have the potential to become a competitive and attractive choice for large-scale commercial smart windows. | Xi Chen Hulin Zhang Wenjie Li Yingjun Xiao Xiang Zhang Yao Li | 2022 | Environmental Science and Ecotechnology2022，，2： | 0 |
| 4 | Defect engineering of W^(6+)-doped NiO for high-performance black smart windows显示文摘In this report,W^(6+)doping as a defect engineering strategy has been proposed to improve the electrochromic properties of NiO film.Further research was conducted to explore the electrochromic properties and the modified mechanism of W-doped NiO film.Compared to the pure NiO,W-doped NiO film exhibits improved electrochromic properties with significant optical modulation(61.56%at 550 nm),fast switching speed(4.42 s/1.40 s for coloring/bleaching),high coloration efficiency(45.41 cm^(2)·C-1)and outstanding cycling stability(no significant attenuation after 2000 cycles)in Li-based electrolytes.Density functional theory(DFT)calculations combined with the experimental results indicate that the improved electrochromic properties were due to enhanced the electronic conductivity and ion conductivity after the introduction of W^(6+).The charge capacity of W-doped NiO has also been improved,and it can function with WO_(3) to achieve a high performance black electrochromic smart window(ECSW)by balancing charge.This work could advance the fundamental understanding of defect engineering as an effective strategy to boost the electrochromic properties of NiO anodic material,manifesting a significant development as a candidate counter electrode in high-performance black smart windows. | Yingjun Xiao Xiang Zhang Dukang Yan Jianbo Deng Mingjun Chen Hulin Zhang Wenhai Sun Jiupeng Zhao Yao Li | 2024 | Nano Research2024，17，4： | 0 |
| 5 | Improving anti-Gram-positive-bacterial performance and osteogenesis for zinc alloy via mussel mimetic polydopamine with non-antibiotic lysozyme and parathyroid hormone显示文摘In this work,a novel coating with a non-antibiotic agent for inhibiting Gram-positive bacteria and promoting osteogenesis was prepared on zinc-aluminium alloy(ZA6-1)via mussel mimetic polydopamine(PDA)containing lysozyme(LYS)and parathyroid hormone(PTH).The results indicate that as-deposited coatings can efficiently decrease the degradation rate of ZA6-1 from 0.52 to 0.16 mm/year,and the addition of LYS weakens the coating resistance,while the addition of PTH enhances the coating resis-tance.In spite that no obvious inhibition of Escherichia coli is observed,the coated zinc alloys show good in vitro antibacterial performance against Staphylococcus aureus.Compared with ZA6-1 zinc alloys,the increase of antibacterial efficacy reaches 86.9%-90.1%.Furthermore,the lower hydrophilicity(26.4°),higher osteoblast cell viability(>100%),good osteoblast cell morphology and better osteoblast cell differentiation(ALP=107.7%)for PDA-LYS/PTH coated samples support that as-prepared coating is promising for modifying biodegradable zinc implants. | Deren Zhao Tianhao Chen Jinqian Chen Banglun Huang Jihua Nie Hulin Liu Yangkai Liu Zilin Chen Feng Zou Qiqi Lu Xiaodong Tan Yunjie Xiang Jing Li Yongping Zhang Xue Feng Xi Rao | 2023 | Biosurface and Biotribology2023，9，4： | 0 |
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