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X射线 3

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高压 2

(GaxIn1−x)2O3薄膜；带隙可调谐；磁控溅射 1

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NOx removal by non-thermal plasma reduction: experimental and theoretical investigations

《化学科学与工程前沿（英文）》 2022年 第16卷 第10期   页码 1476-1484 doi: 10.1007/s11705-022-2165-z

摘要： Green and efficient NOx removal at low temperature is still desired. NOx removal via non-thermal plasma (NTP) reduction is one of such technique. This work presents the experimental and theoretical study on the NOx removal via NTP reduction (NTPRD) in dielectric barrier discharge reactor (DBD). The effect of O2 molar fraction on NOx species in the outlet of DBD, and effects of NH3/NO molar ratio and discharge power of DBD on NOx removal efficiency are investigated. Results indicate that anaerobic condition and higher discharge power is beneficial to direct removal of NOx, and the NOx removal efficiency can be up to 98.5% under the optimal operating conditions. It is also found that adding NH3 is favorable for the reduction of NOx to N2 at lower discharge power. In addition, the NOx removal mechanism and energy consumption analysis for the NTPRD process are also studied. It is found that the reduced active species ( N∗, N−, N+, N2∗, NH2+, etc.) generated in the NTPRD process play important roles for the reduction of NOx to N2. Our work paves a novel pathway for NOx removal from anaerobic gas in industrial application.

关键词： ${\rm{NO}}_x $ removal     NTP reduction     mechanism     energy consumption    

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Recent advances in special morphologic photocatalysts for NO removal

《环境科学与工程前沿（英文）》 2022年 第16卷 第11期 doi: 10.1007/s11783-022-1573-0

摘要：

● Systematic information of recent progress in photocatalytic NO x removal is provided.

关键词： NOx removal     Photocatalyst     Graphene     C3N4     Bi-based compounds.    

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Chemical poison and regeneration of SCR catalysts for NOx removal from stationary sources

Junhua LI,Yue PENG,Huazhen CHANG,Xiang LI,John C. CRITTENDEN,Jiming HAO

《环境科学与工程前沿（英文）》 2016年 第10卷 第3期   页码 413-427 doi: 10.1007/s11783-016-0832-3

摘要： Selective catalytic reduction (SCR) of NO with NH is an effective technique to remove NO from stationary sources, such as coal-fired power plant and industrial boilers. Some of elements in the fly ash deactivate the catalyst due to strong chemisorptions on the active sites. The poisons may act by simply blocking active sites or alter the adsorption behaviors of reactants and products by an electronic interaction. This review is mainly focused on the chemical poisoning on V O -based catalysts, environmental-benign catalysts and low temperature catalysts. Several common poisons including alkali/alkaline earth metals, SO and heavy metals etc. are referred and their poisoning mechanisms on catalysts are discussed. The regeneration methods of poisoned catalysts and the development of poison-resistance catalysts are also compared and analyzed. Finally, future research directions in developing poisoning resistance catalysts and facile efficient regeneration methods for SCR catalysts are proposed.

关键词： flue gas     DeNOx     SCR catalyst     poison and regeneration    

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Simultaneous removal of NO and chlorobenzene on VO/TiO granular catalyst: Kinetic study and performance

《环境科学与工程前沿（英文）》 2021年 第15卷 第4期 doi: 10.1007/s11783-020-1363-5

摘要：

• A V2O5/TiO2 granular catalyst for simultaneous removal of NO and chlorobenzene.

关键词： NOx     Chlorobenzene     Simultaneous removal     Kinetic study     Performance prediction     V2O5/TiO2     Graphical abstract    

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Tailoring the simultaneous abatement of methanol and NO on Sb-Ce-Zr catalysts via copper modification

《环境科学与工程前沿（英文）》 2022年 第16卷 第10期 doi: 10.1007/s11684-022-1565-0

摘要：

● Cu addition enhances CH3OH oxidation and alleviates its inhibitory effect on SCR.

关键词： Copper modification     Sb-CeZr2Ox catalyst     NOx     Methanol     Simultaneous removal    

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Numerical simulation and experimental verification of chemical reactions for SCR DeNO

Qiang ZHANG, Yonglin FAN, Wenyan LI

《化学科学与工程前沿（英文）》 2010年 第4卷 第4期   页码 523-528 doi: 10.1007/s11705-010-0520-y

摘要： Selective catalytic reduction (SCR) is a major commercial technology for NO removal in power plants. There are a lot of complex chemical reactions in SCR reactors, and it is of great significance to understand the internal process of chemical reactions for SCR DeNO and study the impact of various factors on NO removal efficiency. In this paper, the impact of reaction temperature, ammonia-nitrogen molar ratio and resident time in the catalyst bed layer on NO removal efficiency were studied by simulation of chemical reactions. Then calculated results were compared with catalyst activity test data in a power plant, which proved that the simulated results were accurate. As a result, the reaction conditions were optimized in order to get the best removal efficiency of NO, so that we can provide a reference for optimal running of SCR in power plants.

关键词： SCR     NOx     removal efficiency     chemical reactions     simulation    

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采用白光X射线源和模拟阵列能量色散阵列探测器的高通量粉末衍射技术 Article

汪晓平, 董伟伟, 张鹏, 唐浩琪, 张澜庭, 杨铁莹, 刘鹏, 汪洪, 项晓东

《工程（英文）》 2022年 第10卷 第3期   页码 81-88 doi: 10.1016/j.eng.2021.05.023

摘要： text-align: justify;">在上海同步辐射光源（SSRF）的弯铁光束线上，利用由空间扫描硅漂移探测器（SDD）模拟获得的能量色散阵列探测器，对CeO2样品进行高通量白光X射线粉末衍射校正后的衍射图谱表明，由能量色散X 射线衍射（EDXRD）获得的不同衍射峰之间的相对强度与来自角度分辨X射线衍射（ARXRD）的相对强度一致，说明EDXRD结果可用于分析未知样品的晶体结构。实验同时采集了X射线荧光（XRF）信号。来自所有像素的XRF计数可直接在能量坐标下叠加，而衍射信号则需在d 空间下叠加，从而大大改善了阵列探测器的峰值强度和信噪比（S/N）。与ARXRD相比，白光X射线衍射信号强度是单色光衍射信号强度的104倍左右。

关键词： 高通量实验     白光X射线衍射     能量色散阵列探测器     能量色散X射线衍射     角分辨X射线衍射    

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生成锁P<G,X,X'>和它的中央加密系统

史开泉,陈泽雄

《中国工程科学》 2000年 第2卷 第2期   页码 41-46

摘要：

利用数据生成技术，提出生成锁P <G ,X, X´>x,x´>的概念和由P <G ,X, X´>x,x´>构成的中央加密系统。这些系统是：生成锁P <G ,X, X´>x,x´>与单齿中央加密系统，生成锁P <G ,X, X´>x,x´>与多齿中央加密系统。x,x´>x,x´>x,x´>x,x´>

关键词： 生成锁     中央加密系统     多齿加密-解密算法     P    X     X'>存在定理     数位签章唯一性定理    

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CeO doping boosted low-temperature NH-SCR activity of FeTiO catalyst: A microstructure analysis and reaction mechanistic study

《环境科学与工程前沿（英文）》 2022年 第16卷 第5期 doi: 10.1007/s11783-022-1539-2

摘要：

• CeO2 doping significantly improved low-temperature NH3-SCR activity on FeTiOx.

关键词： NH3-SCR     CeO2 doping     Low-temperature NOx removal     Improved redox property     In situ XAFS analysis    

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A mini review: Shape memory polymers for biomedical applications

Kaojin Wang, Satu Strandman, X. X. Zhu

《化学科学与工程前沿（英文）》 2017年 第11卷 第2期   页码 143-153 doi: 10.1007/s11705-017-1632-4

摘要： Shape memory polymers (SMPs) are smart materials that can change their shape in a pre-defined manner under a stimulus. The shape memory functionality has gained considerable interest for biomedical applications, which require materials that are biocompatible and sometimes biodegradable. There is a need for SMPs that are prepared from renewable sources to be used as substitutes for conventional SMPs. In this paper, advances in SMPs based on synthetic monomers and bio-compounds are discussed. Materials designed for biomedical applications are highlighted.

关键词： shape memory polymer     biodegradability     biocompatibility     biomedical application     bile acids    

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A study on quality evaluation for bituminous mixture using X-ray CT

Satoshi TANIGUCHI, Keiichiro OGAWA, Jun OTANI, Itaru NISHIZAKI

《结构与土木工程前沿（英文）》 2013年 第7卷 第2期   页码 89-101 doi: 10.1007/s11709-013-0197-7

摘要： The objective of this paper is to propose a new quality evaluation method for asphalt concrete mixture using X-ray CT scanner. To achieve this aim, asphalt mixtures should be subjected to the X-ray CT scanning and its characteristics should be clarified. The approach employed in this study was as follows: 1) Coarse aggregate, fine aggregate, filler and bitumen were prepared; 2) dense-graded, coarse-graded and porous asphalt mixtures were made; 3) materials and mixtures were subjected to the X-ray CT scanning; 4) frequency of CT-value, threshold value, average slice CT-value, average segment CT-value were computed. In the material examination, CT-value of aggregate becomes smaller in the order of coarse aggregate, fine aggregate and filler and CT image of bitumen was nearly homogeneous. In the mixture examination, histograms of CT-value and four segmentation images made from CT images expressed the material and mixture characterization such as particle size and the difference in bitumen content and mixture type visibly and the bitumen content varies with the threshold values. In addition, the average segment CT-value without threshold value by dividing the fine aggregate from the coarse aggregate and average CT-value of the coarse aggregate, especially is highly correlated with average CT-value of the bitumen.

关键词： asphalt concrete mixture     aggregate     bitumen     bitumen content     quality evaluation     X-ray CT    

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Adsorption of fluoride on clay minerals and their mechanisms using X-ray photoelectron spectroscopy

Junyi DU, Daishe WU, Huayun XIAO, Ping LI

《环境科学与工程前沿（英文）》 2011年 第5卷 第2期   页码 212-226 doi: 10.1007/s11783-010-0255-5

摘要： This research investigates the adsorption mechanisms of fluoride (F) on four clay minerals (kaolinite, montmorillonite, chlorite, and illite) under different F concentrations and reaction times by probing their fluoride superficial layer binding energies and element compositions using X-ray photoelectron spectroscopy (XPS). At high F concentrations ( = 5–1000 mg·L ), the amount of F adsorbed ( ), amount of hydroxide released by clay minerals, solution F concentration, and the pH increase with increasing . The increases are remarkable at >50 mg·L . The increases significantly by continuously modifying the pH level. At <5–100 mg·L , clay minerals adsorb H to protonate aluminum-bound surface-active hydroxyl sites in the superficial layers and induce F binding. As the increases, F , along with other cations, is adsorbed to form a quasi-cryolite structure. At >100 mg·L , new minerals precipitate and the product depends on the critical Al concentration. At [Al ]>10 mol·L , cryolite forms, while at [Al ]<10 mol·L , AlF is formed. At low (0.3–1.5 mg·L ), proton transfer occurs, and the F adsorption capabilities of the clay minerals increase with time.

关键词： clay mineral     fluoride (F)     adsorption mechanism     X-ray photoelectron spectroscopy (XPS)    

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Extrapolation reconstruction of wind pressure fields on the claddings of high-rise buildings

Yehua SUN, Guquan SONG, Hui LV

《结构与土木工程前沿（英文）》 2019年 第13卷 第3期   页码 653-666 doi: 10.1007/s11709-018-0503-5

摘要： Recent research about reconstruction methods mainly used the interpolation reconstruction of the fluctuating wind pressure field on the surface. However, to investigate wind pressure at the edge of the building, the work presented in this paper focuses on the extrapolation reconstruction of wind pressure fields. Here, we propose an improved proper orthogonal decomposition (POD) and Kriging method with a von Kármán correlation function to resolve this issue. The studies show that it works well for not only interpolation reconstruction but also extrapolation reconstruction. The proposed method does require determination of the Hurst exponent and other parameters analysed from the original data. Hence, the fluctuating wind fields have been characterized by the von Kármán correlation function, as an a priori function. Compared with the cubic spline method and different variogram, preliminary results suggest less time consumption and high efficiency in extrapolation reconstruction at the edge.

关键词： extrapolation reconstruction     proper orthogonal decomposition     Kriging method     von Kármán function     Hurst exponent     rescaled range analysis    

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Purification of ice structuring protein complexes from winter wheat using Triton X-114 phase partitioning

Huaneng XU, Haiying CHEN, Weining HUANG,

《化学科学与工程前沿（英文）》 2009年 第3卷 第4期   页码 383-385 doi: 10.1007/s11705-009-0249-7

摘要： Ice structuring proteins (ISPs) isolated from the cold-acclimated plants have a great potential in improving the quality of frozen foods. The purification of ISP complexes from winter wheat was achieved using an aqueous two-phase system of Triton X-114. The highly reactive phenols were removed, and the ISP complexes remained in the aqueous phase after phase separation. The ISP complexes treated by this procedure retained higher thermal hysteresis activity than those treated by ammonium sulfate method. The phase separation technique provides a simple and mild way for removing phenols from ISP complexes.

关键词： separation technique     thermal hysteresis     cold-acclimated     purification     X-114    

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脉冲X射线模拟技术的发展

邱爱慈

《中国工程科学》 2000年 第2卷 第9期   页码 24-28

摘要：

文章简要介绍了利用强流脉冲电子束加速器模拟脉冲X射线的发展概况及国内脉冲X射线模拟源的发展现状，指出作为主要技术途径，高功率Z箍缩技术在实现超强脉冲X射线源和ICF驱动源上都有很重要的 发展应用前景

关键词： 脉冲X射线     高功率脉冲技术     脉冲电子束加速器     Z箍缩     ICF    

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标题 作者 时间 类型 操作

NOx removal by non-thermal plasma reduction: experimental and theoretical investigations

期刊论文

Recent advances in special morphologic photocatalysts for NO removal

期刊论文

Chemical poison and regeneration of SCR catalysts for NOx removal from stationary sources

Junhua LI,Yue PENG,Huazhen CHANG,Xiang LI,John C. CRITTENDEN,Jiming HAO

期刊论文

Simultaneous removal of NO and chlorobenzene on VO/TiO granular catalyst: Kinetic study and performance

期刊论文

Tailoring the simultaneous abatement of methanol and NO on Sb-Ce-Zr catalysts via copper modification

期刊论文

Numerical simulation and experimental verification of chemical reactions for SCR DeNO

Qiang ZHANG, Yonglin FAN, Wenyan LI

期刊论文

采用白光X射线源和模拟阵列能量色散阵列探测器的高通量粉末衍射技术

汪晓平, 董伟伟, 张鹏, 唐浩琪, 张澜庭, 杨铁莹, 刘鹏, 汪洪, 项晓东

期刊论文

生成锁P<G,X,X'>和它的中央加密系统

史开泉,陈泽雄

期刊论文

CeO doping boosted low-temperature NH-SCR activity of FeTiO catalyst: A microstructure analysis and reaction mechanistic study

期刊论文

A mini review: Shape memory polymers for biomedical applications

Kaojin Wang, Satu Strandman, X. X. Zhu

期刊论文

A study on quality evaluation for bituminous mixture using X-ray CT

Satoshi TANIGUCHI, Keiichiro OGAWA, Jun OTANI, Itaru NISHIZAKI

期刊论文

Adsorption of fluoride on clay minerals and their mechanisms using X-ray photoelectron spectroscopy

Junyi DU, Daishe WU, Huayun XIAO, Ping LI

期刊论文

Extrapolation reconstruction of wind pressure fields on the claddings of high-rise buildings

Yehua SUN, Guquan SONG, Hui LV

期刊论文

Purification of ice structuring protein complexes from winter wheat using Triton X-114 phase partitioning

Huaneng XU, Haiying CHEN, Weining HUANG,

期刊论文

脉冲X射线模拟技术的发展

邱爱慈

期刊论文