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| 1 | Removal of Organochlorine from Model Oil Using Mg-Modified ZSM-5 Zeolite:Dechlorination Performance,Regeneration,and Thermodynamics显示文摘Various metal-modified ZSM-5 zeolite adsorbents prepared by the impregnation method were applied to the removal of organic chlorides from model naphtha.The adsorption performance and regeneration stability were investigated by static adsorption experiments.The morphologies,structural features,and physicochemical properties of the adsorbents were characterized by X-ray diffraction,Brunauer-Emmett-Teller analysis,NH3 temperature-programmed desorption,scanning electron microscopy,transmission electron microscopy,and pyridine adsorption infrared spectroscopy.The Mg/ZSM-5 zeolite adsorbent possessed a relatively high specific surface area and good metal dispersion and exhibited the best dechlorination and regeneration performance.The characterization results revealed that introduction of the metal exerted a significant influence on the acidic properties of the catalyst surface.A decrease in the ratio of Brønsted acidic sites to Lewis acidic sites and an increase in the amount of moderately acidic sites were confirmed to be responsible for the excellent adsorption performance of the Mg-modified ZSM-5 zeolite.Furthermore,the Langmuir adsorption isotherm model was applied to study the adsorption equilibrium and thermodynamics of the Mg/ZSM-5 adsorbent under mild conditions.The results revealed that the removal of 1,2-dichloroethane by the Mg/ZSM-5 adsorbent was endothermic,spontaneous,disordered,and primarily involved physical adsorption. | Cheng Xingyuan Gu Jie Huang Bingtian Bing Liancheng Han Dezhi Wang Guangjian Wang Fang | 2023 | China Petroleum Processing & Petrochemical Technology2023,25,2: | 1 |
| 2 | Enhanced rate capability and mitigated capacity decay of ultrahigh-nickel cobalt-free LiNi_(0.9)Mn_(0.1)O_(2) cathode at high-voltage by selective tungsten substitution显示文摘Owing to the further requirement for electric vehicle market, it is appropriate to lower the cost and improve the energy density of lithium-ion batteries by adopting the Co-free and Ni-rich layered cathodes.However, their practical application is severely limited by structural instability and slow kinetics. Herein,ultrahigh-nickel cobalt-free LiNi_(0.9)Mn_(0.1)O_(2) cathode is elaborate designed via in-situ trace substitution of tungsten by a wet co-precipitation method following by high-temperature sintering. It is revealed that the in-situ doping strategy of high valence W^(6+) can effectively improve the structure stability by reducing irreversible phase transition and suppressing the formation of microcracks. Moreover, the transformed fine particles determined by W-doping can facilitate the kinetic characteristics by shortening Li^(+) diffusion paths. As expected, 0.3 mol% W-doped LiNi_(0.9)Mn_(0.1)O_(2) cathode exhibits a high specific capacity of 143.5 mAh/g after 200 cycles at high rate of 5 C in the wide potential range of 2.8-4.5 V, representing a potential next-generation cathode with low-cost, high energy-density and fast-charging capabilities. | Xingyuan Wang Bao Zhang Zhiming Xiao Lei Ming Minghuang Li Lei Cheng Xing Ou | 2023 | Chinese Chemical Letters2023,34,7: | 0 |
| 3 | Methylene blue attenuates white matter damage after focal cerebral ischemia-reperfusion in rats显示文摘Methylene blue(MB)was reported to have neuronal protective effect after brain ischermia.In this study,we aimed to investigate the effect of MB on white matter in rats after focal cerebral ischemia-reperfusion(MCAO/R)injury.MCAO/R model was set and 54 male SD rats were randomly divided into 3 groups:control(sham surgery group),middle cerebral artery occlusion and reperfusion(MCAO),MCAO treated with MB of 10 mg/kg(MB)by intraperitoneal injection 1.5 h after surgery.We observed the neurological deficits in different groups using foot fault test 24 h after MCAO.We measured the infarction volume using TTC staining and showed the morphological changes of neurons and myelin using Nissl and black gold staining. | Chen Xuhao Ma Jiayi Jiang Xingyuan Chen Jiahui Cheng Quancheng Zhang Weiguang Chen Chunhua | 2021 | 解剖学杂志2021,44,S01: | 0 |
| 4 | Review of tensairity and its applications in agricultural aviation显示文摘In recent years,the unmanned aerial vehicle(UAV)has undergone rapid development in field of agricultural plant protection;however,the payload and max-endurance are bottlenecks that limit its further development.Tensairity is a new structure consisting of a bag filled with low-pressure gas,an upper rigid rod and a lower flexible cable.It puts tension pressure on the whole structure through internal gas pressure,provides continuous support to the upper rigid rod,and that is to say,the tensairity improves the stability of the structure in some way.And also,tensairity is a self-supporting and self-balancing system,which means it is a simple,lightweight structure with small storage volume,strong bearing capacity,and low engineering cost.It also has the advantages of gasbag and BSS(beam string structure).The main objective of this research was to introduce the theoretical basis of tensairity and then discussed its development and applications.Moreover,the advantages and disadvantages of tensairity were summarized,and development prospects of tensairity in agricultural aviation were presented.At last,it can be concluded that tensairity has potentials in agricultural aviation.If tensairity is applied in agricultural UAVs,it will solve the two major problems of payload and max-endurance better,and help promoting the development of agricultural aviation technology in agricultural aviation administration and application.Also,it will help with meeting the aerial application requirements of high efficiency and maximal environmental protection.This research will provide a reference for improving working efficiency and economic benefits of UAVs in agricultural plant protection. | Zang Ying Gu Xiuyan Zhou Zhiyan Luo Xiwen Zang Yu Qi Xingyuan Liu Wulan Yang Cheng | 2016 | International Journal of Agricultural and Biological Engineering2016,9,3: | 0 |