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Accounting for the uncertainties in the estimation of average shear wave velocity using – correlations

《结构与土木工程前沿（英文）》 2021年第15卷第5期页码 1199-1208 doi: 10.1007/s11709-021-0749-1

摘要： Site-specific seismic hazard analysis is crucial for designing earthquake resistance structures, particularly in seismically active regions. Shear wave velocity ( V _S) is a key parameter in such analysis, although the economy and other factors restrict its direct field measurement in many cases. Various V _S–SPT– N correlations are routinely incorporated in seismic hazard analysis to estimate the value of V _S. However, many uncertainties question the reliability of these estimated V _S values. This paper comes up with a statistical approach to take care of such uncertainties involved in V _S calculations. The measured SPT– N values from all the critical boreholes were converted into statistical parameters and passed through various correlations to estimate V _S at different depths. The effect of different soil layers in the boreholes on the Vs estimation was also taken into account. Further, the average shear wave velocity of the top 30 m soil cover ( V _S30) is estimated after accounting for various epistemic and aleatoric uncertainties. The scattering nature of the V _S values estimated using different V _S– N correlations was reduced significantly with the application of the methodology. Study results further clearly demonstrated the potential of the approach to eliminate various uncertainties involved in the estimation of V _S30 using general and soil-specific correlations.

关键词： uncertainties V _S– N correlations V _S30 SPT data statistical methodology

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NOxi>sub> and H2sub>S formation in the reductive zone of air-staged combustion of

Jinzhi CAI, Dan LI, Denggao CHEN, Zhenshan LI

《能源前沿（英文）》 2021年第15卷第1期页码 4-13 doi: 10.1007/s11708-020-0804-y

摘要： Low NO combustion of blended coals is widely used in coal-fired boilers in China to control NO emission; thus, it is necessary to understand the formation mechanism of NO and H S during the combustion of blended coals. This paper focused on the investigation of reductive gases in the formation of NO and H S in the reductive zone of blended coals during combustion. Experiments with Zhundong (ZD) and Commercial (GE) coal and their blends with different mixing ratios were conducted in a drop tube furnace at 1200°C–1400°C with an excessive air ratio of 0.6–1.2. The coal conversion and formation characteristics of CO, H S, and NO in the fuel-rich zone were carefully studied under different experimental conditions for different blend ratios. Blending ZD into GE was found to increase not only the coal conversion but also the concentrations of CO and H S as NO reduction accelerated. Both the CO and H S concentrations inblended coal combustion increase with an increase in the combustion temperature and a decrease in the excessive air ratio. Based on accumulated experimental data, one interesting finding was that NO and H S from blended coal combustion were almost directly dependent on the CO concentration, and the CO concentration of the blended coal combustion depended on the single char gasification conversion.Thus, CO, NO , and H S formation characteristics from blended coal combustion can be well predicted by single char gasification kinetics.

关键词： blended coal combustion NO_xformation H₂S formation air staged combustion

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通过 B i>位Ta置换对 AB i> O4sub>型EuNbO4sub>的热学和力学性质进行优化 Article

陈琳, 冯晶

《工程（英文）》 2020年第6卷第2期页码 177-184 doi: 10.1016/j.eng.2019.12.006

摘要：

铁弹性的ABO4sub>型RETaO4sub>陶瓷和RENbO4sub>陶瓷（RE表示稀土）是具有潜在应用价值的热障涂层（TBC）材料，结果显示， RETaO4sub>陶瓷的力学性质优于RENbO4sub>陶瓷的力学性质。在本研究中，我们通过B位钽（Ta）置换对利用固相法（SSR）制备的EuNbO4sub>陶瓷的热学和力学性质进行优化。;5 K⁻¹（1200 ℃）； EuNbO4sub>陶瓷的热导率被降低至1.52 W·K^–1&研究结果表明，通过B位Ta置换能够有效优化EuNbO4sub>的热学和力学性质，从而使得此种材料在将来可成为一种高温结构陶瓷材料。

关键词：热障涂层，稀土铌酸盐，置换，热导率，热膨胀系数，杨氏模量

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

《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： NO_x Chlorobenzene Simultaneous removal Kinetic study Performance prediction V₂O₅/TiO₂ Graphical abstract

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Ni>-Positive ion activated rapid addition and mitochondrial targeting ratiometric fluorescent probesfor in vivoi> cell H2sub>S imaging

Yan Shi, Fangjun Huo, Yongkang Yue, Caixia Yin

《化学科学与工程前沿（英文）》 2022年第16卷第1期页码 64-71 doi: 10.1007/s11705-021-2048-8

摘要： Heterocyclic compound quinoline and its derivatives exist in natural compounds and have a broad spectrum of biological activity. They play an important role in the design of new structural entities for medical applications. Similarly, indoles and their derivatives are found widely in nature. Amino acids, alkaloids and auxin are all derivatives of indoles, as are dyes, and their condensation with aldehydes makes it easy to construct reaction sites for nucleophilic addition agents. In this work, we combine these two groups organically to construct a rapid response site (within 30 s) for H S, and at the same time, a ratiometric fluorescence response is presented throughout the process of H S detection. As such, the lower detection limit can reach 55.7 nmol/L for H S. In addition, cell imaging shows that this probe can be used for the mitochondrial targeted detection of endogenous and exogenous H S. Finally, this probe application was verified by imaging H S in nude mice.

关键词： heterocyclic compound hydrogen sulfide ratiometric mitochondrial targeted

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Superior performance in visible-light-driven hydrogen evolution reaction of three-dimensionally ordered macroporous SrTiO decorated with ZnCdS

《化学科学与工程前沿（英文）》 2021年第15卷第6期页码 1561-1571 doi: 10.1007/s11705-021-2089-z

摘要： It is of broad interest to develop emerging photocatalysts with excellent light-harvesting capacity and high charge carrier separation efficiency for visible light photocatalytic hydrogen evolution reaction. However, achieving satisfying hydrogen evolution efficiency under noble metal-free conditions remains challenging. In this study, we demonstrate the fabrication of three-dimensionally ordered macroporous SrTiO₃ decorated with Zn_xCd₁₋_xS nanoparticles for hydrogen production under visible light irradiation (λ>420 nm). Synergetic enhancement of photocatalytic activity is achieved by the slow photon effect and improved separation efficiency of photogenerated charge carriers. The obtained composites could afford very high hydrogen production efficiencies up to 19.67 mmol·g⁻¹·h⁻¹, with an apparent quantum efficiency of 35.9% at 420 nm, which is 4.2 and 23.9 times higher than those of pure Zn_0.5Cd_0.5S (4.67 mmol·g⁻¹·h⁻¹) and CdS (0.82 mmol·g⁻¹·h⁻¹), respectively. In particular, under Pt-free conditions, an attractive hydrogen production rate (3.23 mmol·g⁻¹·h⁻¹) was achieved, providing a low-cost and high-efficiency strategy to produce hydrogen from water splitting. Moreover, the composites showed excellent stability, and no obvious loss in activity was observed after five cycling tests.

关键词： three-dimensionally ordered macroporous SrTiO₃ Zn_xCd_1–_xS visible light hydrogen production promotion mechanism

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NiFeRuOxi>sub> nanosheets on Ni foam as an electrocatalyst for efficient

《化学科学与工程前沿（英文）》 2023年第17卷第11期页码 1698-1706 doi: 10.1007/s11705-023-2334-8

摘要： The electrocatalyst NiFeRuO_x/NF, comprised of NiFeRuO_x nanosheets grown on Ni foam, was synthesized using a hydrothermal process followed by thermal annealing. NiFeRuO_x/NF displays high electrocatalytic activity and stability for overall alkaline seawater splitting: 98 mV@ 10 mA∙cm⁻² in hydrogen evolution reaction, 318 mV@ 50 mA∙cm⁻² in oxygen evolution reaction, and a cell voltage of 1.53 V@ 10 mA∙cm⁻², as well as 20 h of durability. A solar-driven system containing such a bifunctional NiFeRuO_x/NF has an almost 100% Faradaic efficiency. The NiFeRuO_x coating around Ni foam is an anti-corrosion layer and also a critical factor for enhancement of bifunctional performances.

关键词： NiFeRuO_x nanosheets Ni foam electrocatalysis overall seawater splitting solar-driven system

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H2sub> 对Pt-Ba-Ce /γ-Al2sub>O3sub> 催化剂NOxi>sub> 存储和还原机理的影响研究 Article

王攀, 裔静, 孙川, 罗鹏, 雷利利

《工程（英文）》 2019年第5卷第3期页码 568-575 doi: 10.1016/j.eng.2019.02.005

摘要：

本研究采用浸渍法制备了Pt-Ba-Ce/γ-Al2sub>O3sub>催化剂，利用实验评价了H2sub> 对NSR（NOx<结果表明，透射电子显微镜（TEM）显示X 射线衍射（XRD）光谱中观察到的PtOxsub>、CeO2sub> 和BaCO3sub> 峰很好地分散在在NOxsub> 完全存储- 还原实验中，NO2sub> 产量的增加使NOxsub> 的存储能力在250~350 ℃ 的温度范围内大大提高在NOxsub> 吸附和脱附循环实验中，随着H2sub>暴露时间（30 s、45 s 和60 s）延长，NOxsub> 的存储效率和转化率增加当稀燃和富燃持续时间分别为240 s 和60 s 时，催化剂的NOxsub> 最大转化率达到83.5%。

关键词： Pt–Ba–Ce/γ-Al2sub>O3sub> 催化剂，物理化学性质，NOxi>sub>存储和还原，NOxi>sub> 排放，H2sub> 还原剂

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Non-thermal plasma for exhaust gases treatment

,Víctor SÁNCHEZ-MENDIETA,Ricardo VALDIVIA B.,Alfredo SANTANA D.,José HUERTAS C.,Hilda FRÍAS P.

《机械工程前沿（英文）》 2015年第10卷第3期 页码 301-305 doi: 10.1007/s11465-015-0344-z

摘要：
This article describes a study on a non-thermal plasma device to treat exhaust gases in an internal combustion engine. Several tests using a plasma device to treat exhaust gases are conducted on a Honda GX200-196 cm³ engine at different rotational speeds. A plasma reactor could be efficient in degrading nitrogen oxides and particulate matter. Monoxide and carbon dioxide treatment is minimal. However, achieving 1%–3% degradation may be interesting to reduce the emission of greenhouse gases.

关键词： plasma treatment NO_x CO CO₂ particulate matter vehicle

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Impacts of emissions and meteorological changes on China’s ozone pollution in the warm seasons of 2013

Dian Ding, Jia Xing, Shuxiao Wang, Xing Chang, Jiming Hao

《环境科学与工程前沿（英文）》 2019年第13卷第5期 doi: 10.1007/s11783-019-1160-1

摘要： O3 increment is mainly caused by changes in meteorology rather than emissions. Emission reduction is effective to reduce O3 nationwide, especially in summer. Strengthened NOx controls are necessary to meet the ambient O3 standard. We have quantified the impacts of anthropogenic emissions reductions caused by the Air Pollution Control Action Plan and changes in meteorological fields between 2013 and 2017 on the warm-season O3 concentration in China using a regional 3D chemical transport model. We found that the impact on daily maximum eight-hour (MDA8) O3 concentration by the meteorological variation that mostly increased O3 was greater than that from emission reduction, which decreased O3. Specifically, the control measures implemented since 2013 in China have reduced SO2, NOx, PM2.5, and VOC emissions by 33%, 25%, 30%, and 4% in 2017, while NH3 emissions have increased by 7%. The changes in anthropogenic emissions lowered MDA8 O3 by 0.4–3.7 ppb (0.8%–7.6%, varying by region and month), although MDA8 O3 was increased slightly in some urban areas (i.e. North China) at the beginning/end of warm seasons. Relative to 2013, the average 2 m temperature in 2017 shows increments in North, North-east, East, and South China (0.34℃–0.83℃) and decreases in Central China (0.24℃). The average solar radiation shows increments in North, North-east, and South China (7.0–9.7 w/m2) and decreases in Central, South-west, and North-west China (4.7–10.3 w/m2). The meteorological differences significantly change MDA8 O3 by -3.5–8.5 ppb (-8.2%–18.8%) with large temporal variations. The average MDA8 O3 was slightly increased in North, North-east, East, and South China. The response surface model suggests that the O3 formation regime transfers from NOx-saturated in April to NOx-limited in July on average in China.

关键词： O₃ pollution Meteorological influences Emission reduction NO_x VOC

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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 FeTiO_x.

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

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Chemical poison and regeneration of SCR catalysts for NOxi>sub>

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 DeNO_x SCR catalyst poison and regeneration

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Air pollutant control and strategy in coal-fired power industry for promotion of China’s emission reduction

Weiliang WANG, Bo LI, Xuan YAO, Junfu LYU, Weidou NI

《能源前沿（英文）》 2019年第13卷第2期 页码 307-316 doi: 10.1007/s11708-019-0620-4

摘要： Coal-fired power industry has always been the major power source in China. As coal-fired power industry consumes around a half of China’s coal production, it is always thought to be a big air pollutant emission source. As more and more strict legislations in coal-fired power industry have been issued by the government, the emission performance in coal-fired power industry has been drastically reduced recently. Based on a brief review of the development of emission control in China’s coal-fired power industry, the affecting mechanism among the development of installed capacities of emission control device, pollutant emission, and emission performances in coal-fired power industry is studied. According to a systematic study on the development of emissions of classified categories, the role of coal-fired power industry as a pollutant source is reevaluated. It is found that, coal-fired power industry has contributed the most to China’s emission reduction, and the barycenter of air pollutant emission has been transformed to other high energy consumption industries, like heat, iron/steel, and cement. Then some development strategies are suggested, such as maintaining the current emission standard in coal-fired power industry; expending the coal-fired power emission standards to categories of heat generation and supply, nonmetallic mineral production and ferrous metals smelting and processing; and controlling other heavy metal by consulting the method of Hg control.

关键词： coal-fired power industry energy intensive industries pollutant emission control NO_x SO₂ soot

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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： NO_x removal Photocatalyst Graphene C₃N₄ Bi-based compounds.

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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-CeZr₂O_x catalyst NO_x Methanol Simultaneous removal

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标题作者时间类型操作

Accounting for the uncertainties in the estimation of average shear wave velocity using – correlations

期刊论文



NOxi>sub> and H2sub>S formation in the reductive zone of air-staged combustion of

Jinzhi CAI, Dan LI, Denggao CHEN, Zhenshan LI

期刊论文



通过 B i>位Ta置换对 AB i> O4sub>型EuNbO4sub>的热学和力学性质进行优化

陈琳, 冯晶

期刊论文



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

期刊论文



Ni>-Positive ion activated rapid addition and mitochondrial targeting ratiometric fluorescent probesfor in vivoi> cell H2sub>S imaging

Yan Shi, Fangjun Huo, Yongkang Yue, Caixia Yin

期刊论文



Superior performance in visible-light-driven hydrogen evolution reaction of three-dimensionally ordered macroporous SrTiO decorated with ZnCdS

期刊论文



NiFeRuOxi>sub> nanosheets on Ni foam as an electrocatalyst for efficient

期刊论文



H2sub> 对Pt-Ba-Ce /γ-Al2sub>O3sub> 催化剂NOxi>sub> 存储和还原机理的影响研究

王攀, 裔静, 孙川, 罗鹏, 雷利利

期刊论文



Non-thermal plasma for exhaust gases treatment

,Víctor SÁNCHEZ-MENDIETA,Ricardo VALDIVIA B.,Alfredo SANTANA D.,José HUERTAS C.,Hilda FRÍAS P.

期刊论文



Impacts of emissions and meteorological changes on China’s ozone pollution in the warm seasons of 2013

Dian Ding, Jia Xing, Shuxiao Wang, Xing Chang, Jiming Hao

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



Chemical poison and regeneration of SCR catalysts for NOxi>sub>

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

期刊论文



Air pollutant control and strategy in coal-fired power industry for promotion of China’s emission reduction

Weiliang WANG, Bo LI, Xuan YAO, Junfu LYU, Weidou NI

期刊论文



Recent advances in special morphologic photocatalysts for NO removal

期刊论文



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

期刊论文