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Unveiling the promotion role of ZnO on Zn-Al spinel oxide for CO2 hydrogenation

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Journal of Energy Chemistry 2025年第1期 18-25页

作者： Tongyao Wang Xinlong Yao Lixin Liang Hongyu Chen Pan Gao Guangjin Hou State Key Laboratory of Catalysis Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences University of chinese academy of sciences

The Zn-Al spinel oxide stands out as one of the most active catalysts for high-temperature methanol synthesis from CO2hydrogenation. However, the structure–activity relationship of the reaction remains poorly understood due to challenges in atomic-level structural characterizations and analysis of reaction intermediates. In this study, we prepared two Zn-Al spinel oxide catalysts via coprecipitation（ZnAl-C）and hydrothermal（ZnAl-H） methods, and conducted a comparative investigation in the CO2hydrogenation reaction. Surprisingly, under similar conditions, ZnAl-C exhibited significantly higher selectivity towards methanol and DME compared to ZnAl-H. Comprehensive characterizations using X-ray diffraction（XRD）, Raman spectroscopy and electron paramagnetic resonance（EPR） unveiled that ZnAl-C catalyst had abundant ZnO species on its surface, and the interaction between the ZnO species and its ZnAl spinel oxide matrix led to the formation of oxygen vacancies, which are crucial for CO2adsorption and activation. Additionally, state-of-the-art solid-state nuclear magnetic resonance（NMR） techniques,including ex-situ and in-situ NMR analyses, confirmed that the surface ZnO facilitates the formation of unique highly reactive interfacial formate species, which was readily hydrogenated to methanol and DME. These insights elucidate the promotion effects of ZnO on the ZnAl spinel oxide in regulating active sites and reactive intermediates for CO2-to-methanol hydrogenation reaction, which is further evidenced by the significant enhancement in methanol and DME selectivity observed upon loading ZnO onto the ZnAl-H catalyst. These molecular-level mechanism understandings reinforce the idea of optimizing the ZnO-ZnAl interface through tailored synthesis methods to achieve activity-selectivity balance.

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Rollback,scissor-like closure of the Mongol-Okhotsk Ocean and formation of an orocline:magmatic migration based on a large archive of age data

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National Science Review 2022年第5期9卷 167-178页

作者： Tao Wang Ying Tong Wenjiao Xiao Lei Guo Brian F.Windley Tatiana Donskaya Shan Li Narantsetseg Tserendash Jianjun Zhang Beijing SHRIMP Center Institute of Geology Chinese Academy of Geological Sciences Key Laboratory of Earth Probe and Geodynamics Chinese Academy of Geological Sciences xinjiang Research Center for Mineral Resources Xinjiang Institute of Ecology and GeographyChinese Academy of Sciences School of Geography Geology and the EnvironmentUniversity of Leicester Institute of the Earth's Crust Siberian Branch Russian Academy of Sciences Institute of Geology Mongolian Academy of Sciences

Tracing the closure of oceans with irregular margins and the formation of an orocline are crucial for understanding plate reconstruction and continental *** eastern Central Asian Orogenic Belt,where the Mongol-Okhotsk orocline is situated,is one of the world’s largest magmatic *** a large data set of U-Pb zircon ages,we updated the timing of many published igneous rocks,which allowed us to recognize tightly ’folded’ linear Carboniferous-Jurassic magmatic belts that wrap around the Mongol-Okhotsk suture and their migrations both sutureward and *** new successive magmatic belts reveal a rollback,scissor-like(or zipper-like) closure of the Mongol-Okhotsk Ocean that was fundamentally controlled by coeval subduction rollback and rotation of the Siberian and Mongolian-Erguna *** study also demonstrates the complex mechanisms and processes of the closure of an ocean with irregular margins and the formation of a consequent orocline.

关键词： magmatic migration ocean closure orocline Mongol-Okhotsk Ocean

Natural Heritage Value of xinjiang Tianshan and Global Comparative Analysis

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Journal of Mountain Science 2012年第2期9卷 262-273页

作者： XU Xiaoliang YANG Zhaoping Adayi Saiken Shao Rui LIU Xinyu xinjiang Institute of Ecology and Geography Chinese Academy of SciencesUrumqi 830011XinjiangChina Graduate University of the chinese academy of sciences Beijing 100049China

xinjiang Tianshan is a serial natural property that has been nominated for World Heritage *** paper presents a systematically comprehensive and comparative analysis of the heritage resources of xinjiang Tianshan according to the World Heritage *** biological,ecological and aesthetic values,which are of global importance, are *** is concluded that xinjiang Tianshan meets the world heritage criteria(vii)and (ix).xinjiang Tianshan is compared with other mountain world heritage sites,mountains in Central Asia,the Tianshan Mountains outside China,and with the protected areas of the Tianshan Mountains on the Tentative List for World Heritage Sites,so as to provide objective data for the world heritage application.

关键词： xinjiang Tianshan Natural Heritage Heritage characteristics Heritage values Comparative analysis

Near-perfect replication on amorphous alloys through active force modulation based on machine learning/neural network parameter prediction

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 181-191页

作者： Senkuan Meng Zheng Wang Ruisong Zhu Ruijie Liu Jiang Ma Lina Hu Weihua Wang Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education) School of Materials Science and Engineering Shandong University College of Mechatronics and Control Engineering Shenzhen University Songshan Lake Materials Laboratory Institute of Physics Chinese Academy of Sciences

As a microforming technique, micro/nano-structural replication possesses advantages of high precision and efficiency. With the remarkable superplasticity in the supercooled liquid region, amorphous alloys or metallic glasses(MGs) are regarded as ideal materials for miniature fabrication. However, due to the intrinsic metastable nature of supercooled liquids, the design of imprinting processes for MGs poses a challenge. In the past, process parameters have largely relied on trial-and-error *** this work, a low-frequency active force modulation system is employed to apply a stable, precise, and real-time feedback stress field for imprinting of MG samples. Low-frequency vibrations can facilitate the filling of microstructures on the template surface by reducing the effective viscosity of the supercooled liquid. With the dataset composed of orthogonal experiments, a machine learning strategy based on back-propagation(BP) neural networks was utilized to construct a 3D parameter space for temperature, stress, and time, and to predict the corresponding filling ratio. Furthermore, the optimal combination of imprinting process parameters was identified, and its filling ratio was experimentally validated to reach as high as 0.94. The near-perfect replication of microstructures confirms the superiority of the active force modulation system and the data-driven strategy of machine learning-assisted parameter design. At the same time, this one-step microforming process provides a new approach to addressing the accuracy-cost trade-off dilemma in precision manufacturing.

关键词： metallic glass amorphous alloy microforming imprinting machine learning

Molecular mechanism of endocrine-disruptive effects induced by Bisphenol A:The role of transmembrane G-protein estrogen receptor 1 and integrin αvβ3

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Journal of Environmental sciences 2019年第1期31卷 1-13页

作者： Zhiguo Sheng Cong Wang Furong Ren Yuxiang Liu Benzhan Zhu Research Center for Eco-Environmental sciences Chinese Academy of Sciences University of chinese academy of sciences College of Chemistry and Chemical Engineering Xinjiang Normal University

Bisphenol A(BPA) is one of the highest volume industrial products worldwide and has been widely used to make various products as the intermediates of polycarbonate plastics and epoxy ***, general population has been widely exposed to BPA due to extensive use of BPAcontaining products. BPA has similar chemical structure with the natural estrogen and has been shown to induce a variety of estrogen-like endocrine effects on organism in vivo or in vitro. High doses of BPA tend to act as antagonist of estrogen receptors(ERs) by directly regulating the genomic transcription. However, BPA at environmentally relevant low-dose always disrupt the biological function via a non-genomic manner mediated by membrane receptors, rather than ERs. Although some studies had investigated the non-genomic effects of low-dose BPA, the exact molecular mechanism still remains unclear. Recently, we found that membrane G protein-coupled estrogen receptor 1 and integrin αvβ3 and its relative signal pathways participate in the induction of male germ cell proliferation and thyroid transcription disruption by the low-dose BPA. A profound understanding for the mechanism of action of the environmentally relevant BPA exposure not only contributes to objectively evaluate and predict the potential influence to human health, but also provides theoretical basis and methodological support for assessing health effects trigged by other estrogen-like environmental endocrine disruptors. Based mainly on our recent findings, this review outlines the research progress of molecular mechanism on endocrine disrupting effects of environmental low-dose BPA, existing problems and some consideration for future studies.

关键词： Bisphenol A Low-dose effects G protein-coupled estrogen receptor 1 Integrin αvβ3 Reproductive toxicity Thyroxine interference effect

Nitrogen addition promotes soil carbon accumulation globally

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Science China Life sciences 2025年第1期 284-293页

作者： Xuemei Yang Suhui Ma Erhan Huang Danhua Zhang Guoping Chen Jiangling Zhu Chengjun Ji Biao Zhu Lingli Liu Jingyun Fang Institute of Ecology College of Urban and Environmental Sciencesand Key Laboratory for Earth Surface Processes of the Ministry of EducationPeking University Ministry of Education Key Laboratory for Transboundary Ecosecurity of Southwest China School of Ecology and Environmental ScienceYunnan University State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of Sciences

Soil is the largest carbon(C) reservoir in terrestrial ecosystems and plays a crucial role in regulating the global C cycle and climate *** nitrogen(N) deposition has been widely considered as a critical factor affecting soil organic carbon(SOC) storage, but its effect on SOC components with different stability remains unclear. Here, we analyzed extensive empirical data from 304 sites worldwide to investigate how SOC and its components respond to N addition. Our analysis showed that N addition led to a significant increase in bulk SOC(6.7%), with greater increases in croplands(10.6%) and forests(6.0%) compared to grasslands(2.1%). Regarding SOC components, N addition promoted the accumulation of plant-derived C(9.7%–28.5%) over microbial-derived C(0.2%), as well as labile(5.7%) over recalcitrant components(–1.2%), resulting in a shift towards increased accumulation of plant-derived labile C. Consistently, N addition led to a greater increase in particulate organic C(11.9%) than mineral-associated organic C(3.6%), suggesting that N addition promotes C accumulation across all pools, with more increase in unstable than stable pools. The responses of SOC and its components were best predicted by the N addition rate and net primary productivity. Overall, our findings suggest that N enrichment could promote the accumulation of plant-derived and non-mineral associated C and a subsequent decrease in the overall stability of soil C pool, which underscores the importance of considering the effects of N enrichment on SOC components for a better understanding of C dynamics in soils.

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Effects of Afforestation on Carbon Storage in Boyang Lake Basin,China

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chinese Geographical Science 2013年第6期23卷 647-654页

作者： WU Dan SHAO Quanqin LI Jia Institute of Geographic sciences and Natural Resources Research Chinese Academy of Sciences xinjiang Institute of Ecology and Geography Chinese Academy of Sciences

By using field survey data from the sixth forest inventory of Jiangxi Province in 2003,the biomass and carbon storage for three studied species(Pinus massoniana,Cunninghamia lanceolata,and Pinus elliottii)were estimated in Taihe and Xingguo counties of Boyang Lake Basin,Jiangxi Province,*** relationship between carbon density and forest age was analyzed by logistic ***-temporal dynamics of forest biomass and carbon storage in 1985–2003 were also *** results show that total stand area of the three forest species was 3.10×105ha,total biomass 22.20 Tg,vegetation carbon storage 13.07 Tg C,and average carbon density 42.36 Mg C/ha in the study area in *** storage by forest type in descending order was:***,*** and *** storage by forest age group in descending order was:middle stand,young stand,near-mature stand and mature *** storage by plantation forests was 1.89 times higher than that by natural *** density of the three species increased 8.58 Mg C/ha during the study *** carbon density of Taihe County was higher in the east and west,and lower in the *** carbon density of Xingguo County was higher in the northeast and lower in the *** general,the carbon density increased with altitude and *** projects contribute significantly to increasing stand area and carbon *** forest management may improve the carbon sequestration capacity of forest ecosystems.

关键词： carbon storage carbon density forest inventory data Biomass Expansion Factor Boyang Lake Basin

ELDRS and dose-rate dependence of vertical NPN transistor

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chinese Physics C 2009年第1期33卷 47-49页

作者：郑玉展陆妩任迪远王改丽余学锋郭旗 xinjiang Technical Institute of Physics & Chemistry Chinese Academy of Sciences Graduate University of chinese academy of sciences

The enhanced low-dose-rate sensitivity （ELDRS） and dose-rate dependence of vertical NPN transistors are investigated in this article. The results show that the vertical NPN transistors exhibit more degradation at low dose rate, and that this degradation is attributed to the increase on base current. The oxide trapped positive charge near the SiO2-Si interface and interface traps at the interface can contribute to the increase on base current and the two-stage hydrogen mechanism associated with space charge effect can well explain the experimental results.

关键词： bipolar junction transistor ELDRS effect dose-rate dependence

The Relation between the Magnetic Field and Spin Period of a Millisecond Pulsar

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chinese Physics Letters 2013年第10期30卷 237-240页

作者： PAN Yuan-Yue WANG Na ZHANG Cheng-Min xinjiang Astronomical Observatories Chinese Academy of SciencesUrumqi 830011 National Astronomical Observatories Chinese Academy of SciencesBeijing 100012

Based on the function of the accretion induced magnetic decay,the analytical relationship between the magnetic field B and spin period P of a millisecond pulsar(MSP)is investigated,from which the minimum spin period of about one millisecond can be *** this minimum spin period,the range of the neutron star(NS)radius is constrained in comparison with the measured spin period of ***,we also study the relation between the spin period and the accretion massΔM of the NS,and find that the minimum spin period is achieved with the accretion mass of about-0.2M⊙,while the bottom magnetic field of about 108 G is obtained.

关键词： second radius decay