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- 저자 : Huaiyuan Wang (검색결과 4 건)
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Research progress of single-atom coating and its application prospect in protective coatings
Chijia Wang,Qianqian Yin,Shuyi Liu,Jianxin Wang,Weihao Fan,Zhanjian Liu,Fatang Liu,Yize Liu,Huaiyuan Wang 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.128 No.-
Coating technology is the most economical and efficient approach to retard metal corrosion, and newcomposite coatings prepared by adding monoatomic fillers to a polymer matrix have excellent corrosionresistance and good mechanical properties. The single-atom coating formed by the immobilization ofmetal atoms alone on the matrix or filler represents the maximum utilization of atoms at the presentstage, which has unique coordination properties, active sites, and synergistic effects with the support. Compared with traditional fillers, single-atom fillers not only have the advantages of supporting fillersbut can also provide monatomic metals to form passivation films, promote the progress of catalytic passivationreactions, and combine organic compounds to generate new composite materials. This paperfocuses on the preparation methods and mechanisms of single-atom coatings in the field of batteriesand catalysts as well as the application of composite materials prepared by combining single-atom materialswith polymer matrices in the field of metal protection. The preparation methods, application prospects,and coating characteristics of various single-atom composites were summarized. In addition,we discuss the potential applications of single-atom coatings in the design of future composite coatings.
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An effective process for removing organic compounds from oily sludge using soluble metallic salt
Guolin Jing,Mingming Luan,Chunjie Han,Tingting Chen,Huaiyuan Wang 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.4
This study evaluates the application of wet oxidation for the treatment of oily sludge by using hydrogen peroxide as oxidant instead of air at high temperature in a batch reactor. The experimental results show that the quantity of oxidant with 250% to theoretical oxygen demand of oily sludge is comparatively effective and economica1. Adding a catalyst, Fe3+, significantly improved the COD removal. Reaction mechanism for WO of oily sludge is analyzed. Oxidation of intermediate for oily sludge is a rate-limiting step for further oxidation of oily sludge.
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Study on slope stability of waste dump with a weak layer using finite element limit analysis method
Chong Chen,Huayong Lv,Jianjian Zhao,Zhanbo Cheng,Huaiyuan Wang,Gao Xu 국제구조공학회 2024 Structural Engineering and Mechanics, An Int'l Jou Vol.89 No.3
Slope stability is generally paid more attention to in slope protection works, especially for slope containing weak layers. Two indexes of safety factor and failure model are selected to perform slope stability. Moreover, the finite element limit analysis method comprehensively combines the advantage of the limit analysis method and the finite element method obtaining the upper and lower bounds of the safety factor and the failure mode under the slope stability limit state. In this study, taking a waste dump containing a weak layer as an engineering background, the finite element limit analysis method is adopted to explore the potential failure mode. Meanwhile, the sensitivity analysis of slope stability is performed on geometrical and geotechnical parameters of the waste dump. The results show that the failure mode of the waste dump slope is two wedges if the weak layer is located on the ground surface (Model A), while the slope can be observed as three wedges failure if the weak layer is below the ground surface (Model B). In addition, both failure modes are highly sensitive to the friction angle of the weak layer and the shear strength of waste disposal, and moderately sensitive to the heap height, the dip angle and cohesion of the weak layer, while the toe cutting has limited effect on the slope stability. Moreover, the sensitivity to the excavation of the ground depends on the location of the weak layer and failure mode.
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Investigation lateral deformation and failure characteristics of strip coal pillar in deep mining
Chen, Shaojie,Qu, Xiao,Yin, Dawei,Liu, Xingquan,Ma, Hongfa,Wang, Huaiyuan Techno-Press 2018 Geomechanics & engineering Vol.14 No.5
In deep mining, the lateral deformation of strip coal pillar appears to be a new characteristic. In order to study the lateral deformation of coal-mass, a monitoring method and monitoring instrument were designed to investigate the lateral deformation of strip coal pillar in Tangkou Coalmine with the mining depth of over 1000 m. Because of without influence of repeated mining, the bedding sandstone roof is easy to break and the angle between maximum horizontal stress and the roadway is small, the maximum lateral deformation is only about 287 mm lower than the other pillars in the same coalmine. In deep mining, the energy accumulation and release cause a discontinuous damage in the heterogeneous coal-mass, and the lateral deformation of coal pillar shows discontinuity, step and mutation characters. These coal-masses not only show a higher plasticity but also the high brittleness at the same time, and its burst tendency is more obvious. According to the monitoring results and theoretical calculations, the yield zone of the coal pillar width is determined as 15.6 m. The monitoring results presented through this study are of great significance to the stability analysis and design of coal pillar.
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