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High-strength porous alumina ceramics prepared from stable wet foams

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Journal of Advanced Ceramics 2021年第4期10卷 852-859页

作者： linying wang Liqiong AN Jin ZHAO Shunzo SHIMAI Xiaojian MAO Jian ZHANG Juan LIU Shiwei wang College of Ocean Science and Engineering Shanghai Maritime UniversityShanghai 201306China State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China Key Laboratory of Transparent and Opto-functional Advanced Inorganic Materials Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China

Porous ceramics have been widely used in heat insulation,filtration,and as a catalyst *** with high porosity and high strength are desired;however,this high porosity commonly results in low strength *** this study,porous alumina with high porosity and high strength was prepared by a popular direct foaming method based on particle-stabilized wet foam that used ammonium polyacrylate(PAA)and dodecyl trimethyl ammonium chloride(DTAC)as the dispersant and hydrophobic modifier,*** effects of the dispersant and surfactant contents on the rheological properties of alumina slurries,stability of wet foams,and microstructure and mechanical properties of sintered ceramics were *** microstructure of porous ceramics was regulated using wet foams to achieve high *** a given PAA content,the wet foams exhibited increasing stability with increasing DTAC *** most stable wet foam was successfully obtained with 0.40 wt%PAA and 0.02 wt%*** corresponding porous alumina ceramics had a porosity of 82%,an average grain size of 0.7μm,and a compressive strength of 39 ***,for a given DTAC content,the wet foams had decreasing stability with increasing PAA content.A possible mechanism to explain these results is analyzed.

关键词： porous ceramic alumina dispersant hydrophobic modifier compressive strength

Diurnal and Seasonal Variations of CO2Fluxes and Their Climate Controlling Factors for a Subtropical Forest in Ningxiang

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Advances in Atmospheric Sciences 2015年第4期32卷 553-564页

作者： JIA Binghao XIE Zhenghui ZENG Yujin wang linying wang Yuanyuan XIE Jinbo XIE Zhipeng State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric Physics Chinese Academy of Sciences University of Chinese Academy of Sciences

In this study, the diurnal and seasonal variations of CO2 fluxes in a subtropical mixed evergreen forest in Ningxiang of Hunan Province, part of the East Asian monsoon region, were quantified for the first time. The fluxes were based on eddy covariance measurements from a newly initiated flux tower. The relationship between the CO2 fluxes and climate factors was also analyzed. The results showed that the target ecosystem appeared to be a clear carbon sink in 2013, with integrated net ecosystem CO2exchange（NEE）, ecosystem respiration（RE）, and gross ecosystem productivity（GEP） of-428.8, 1534.8 and1963.6 g C m^-2yr^-1, respectively. The net carbon uptake（i.e. the-NEE）, RE and GEP showed obvious seasonal variability,and were lower in winter and under drought conditions and higher in the growing season. The minimum NEE occurred on12 June（-7.4 g C m^-2d^-1）, due mainly to strong radiation, adequate moisture, and moderate temperature; while a very low net CO2 uptake occurred in August（9 g C m^-2month^-1）, attributable to extreme summer drought. In addition, the NEE and GEP showed obvious diurnal variability that changed with the seasons. In winter, solar radiation and temperature were the main controlling factors for GEP, while the soil water content and vapor pressure deficit were the controlling factors in summer. Furthermore, the daytime NEE was mainly limited by the water-stress effect under dry and warm atmospheric conditions, rather than by the direct temperature-stress effect.

关键词： net ecosystem exchange diurnal and seasonal variations climate controlling factors subtropical mixed forest East Asian monsoon r

Building a Community of Health for China and Myanmar Through Solidarity and Mutual Assistance

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International Understanding 2020年第1期 18-20页

作者：无 wang linying the Myanmar Office of the CFPD 不详

*** impression of NGOs in Myanmar On the early morning of January 8,2020,as the staff of the Myanmar Office of the China Foundation for Peace and Development(CFPD),weflew to Yangon to embark on a new journey in Myanmar,on a mission to conduct in-depth cooperation and strengthen people-to-people connectivity between our two countries.

关键词： Peace Myanmar connectivity

Coking and decoking chemistry for resource utilization of polycyclic aromatic hydrocarbons(PAHs)and low-carbon process

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Journal of Energy Chemistry 2023年第1期76卷 105-116,I0004页

作者： Nan wang Li wang Yuchun Zhi Jingfeng Han Chengwei Zhang Xinqiang Wu Jinling Zhang linying wang Benhan Fan Shutao Xu Yijun Zheng Shanfan Lin Renan Wu Yingxu Wei Zhongmin Liu National Engineering Research Center of Lower-Carbon Catalysis Technology Dalian National Laboratory for Clean EnergyiChEM(Collaborative Innovation Center of Chemistry for Energy Materials)Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Laboratory of High-Resolution Mass Spectrometry Technologies CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China

Low-carbon process for resource utilization of polycyclic aromatic hydrocarbons(PAHs)in zeolitecatalyzed processes,geared to carbon neutrality-a prominent trend throughout human activities,has been bottlenecked by the lack of a complete mechanistic understanding of coking and decoking chemistry,involving the speciation and molecular evolution of PAHs,the plethora of which causes catalyst deactivation and forces regeneration,rendering significant CO_(2) ***,by exploiting the high-resolution matrix-assisted laser desorption/ionization Fourier-transform ion cyclotron resonance mass spectrometry(MALDI FT-ICR MS),we unveil the missing fingerprints of the mechanistic pathways for both formation and decomposition of cross-linked cage-passing PAHs for SAPO-34-catalyzed,industrially relevant methanol-to-olefins(MTO)as a model *** is the molecule-resolved symmetrical signature:their speciation originates exclusively from the direct coupling of in-cage hydrocarbon pool(HCP)species,whereas water-promoted decomposition of cage-passing PAHs initiates with selective cracking of inter-cage local structures at 8-rings followed by deep aromatic steam *** deciphering the reversibly dynamic evolution trajectory(fate)of full-spectrum aromatic hydrocarbons and fulfilling the real-time quantitative carbon resource footprints advance the fundamental knowledge of deactivation and regeneration phenomena(decay and recovery motifs of autocatalysis)and disclose the underlying mechanisms of especially the chemistry of coking and decoking in zeolite *** positive yet divergent roles of water in these two processes are *** unprecedented insights ultimately lead us to a steam regeneration strategy with valuable CO and H_(2) as main products,negligible CO_(2) emission in steam reforming and full catalyst activity recovery,which further proves feasible in other important chemical processes,promising to be a sustainable and potent approa

关键词： Methanol-to-olefins SAPO-34 Polycyclic aromatic hydrocarbons(PAHs) Catalyst deactivation Catalyst regeneration Low CO_(2)emission

High-silica faujasite zeolite-tailored metal encapsulation for the low-temperature production of pentanoic biofuels

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Journal of Energy Chemistry 2024年第1期88卷 552-560,I0012页

作者： Wenhao Cui Yuanshuai Liu Pengfei Guo Zhijie Wu Liqun Kang Huawei Geng Shengqi Chu linying wang Dong Fan Zhenghao Jia Haifeng Qi Wenhao Luo Peng Tian Zhongmin Liu National Engineering Research Center of Lower-Carbon Catalysis Technology Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of SciencesQingdao 266101ShandongChina College of Chemistry and Chemical Engineering Inner Mongolia UniversityHohhot 010021Inner MongoliaChina State Key Laboratory of Heavy Oil Processing and Key Laboratory of Catalysis of CNPC China University of PetroleumBeijing 102249China Department of Inorganic Spectroscopy Max Planck Institute for Chemical Energy ConversionMülheim an der Ruhr 45470Germany Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Division of Energy Research Resources Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Leibniz-Institut für Katalyse Albert-Einstein-Straβe 29aRostock 18059Germany

Zeolite-encapsulated metal nanoclusters are at the heart of bifunctional catalysts,which hold great potential for petrochemical conversion and the emerging sustainable ***,efficient encapsulation of metal nanoclusters into a high-silica zeolite Y in particular with good structural integrity still remains a significant ***,we have constructed Ru nanoclusters(~1 nm)encapsulated inside a high-silica zeolite Y(SY)with a SiO_(2)/Al_(2)O_(3) ratio(SAR)of 10 via a cooperative strategy for direct zeolite synthesis and a consecutive impregnation for metal *** with the benchmark Ru/H-USY and other analogues,the as-prepared Ru/H-SY markedly boosts the yields of pentanoic biofuels and stability in the direct hydrodeoxygenation of biomass-derived levulinate even at a mild temperature of 180℃,which are attributed to the notable stabilization of transition states by the enhanced acid accessibility and properly sized constraints of zeolite cavities owing to the good structural integrity.

关键词： High-silica zeolite Y Metal encapsulation Bifunctional catalysis Hydrodeoxygenation Biofuels

Robust Benchmark Structural Variant Calls of An Asian Using State-of-the-art Long-read Sequencing Technologies

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Genomics, Proteomics & Bioinformatics 2022年第1期20卷 192-204页

作者： Xiao Du Lili Li Fan Liang Sanyang Liu Wenxin Zhang Shuai Sun Yuhui Sun Fei Fan linying wang Xinming Liang Weijin Qiu Guangyi Fan Ou wang Weifei Yang Jiezhong Zhang Yuhui Xiao Yang wang Depeng wang Shoufang Qu Fang Chen Jie Huang National Institutes for food and drug Control(NIFDC) Beijing 10050China BGI-Qingdao BGI-ShenzhenQingdao 266555China GrandOmics Biosciences Beijing 102200China Annoroad Gene Technology(Beijing)Co. Ltd.Beijing 102200China BGI-Shenzhen Shenzhen 518083China MGI BGI-ShenzhenShenzhen 518083China State Key Laboratory of Agricultural Genomics BGI-ShenzhenShenzhen 518083China China National GeneBank BGI-ShenzhenShenzhen 518120China

The importance of structural variants(SVs)for human phenotypes and diseases is now *** a variety of SV detection platforms and strategies that vary in sensitivity and specificity have been developed,few benchmarking procedures are available to confidently assess their performances in biological and clinical *** facilitate the validation and application of these SV detection approaches,we established an Asian reference material by characterizing the genome of an Epstein-Barr virus(EBV)-immortalized B lymphocyte line along with identified benchmark regions and high-confidence SV *** established a high-confidence SV callset with 8938 SVs by integrating four alignment-based SV callers,including 109×Pacific Bio sciences(PacBio)continuous long reads(CLRs),22×PacBio circular consensus sequencing(CCS)reads,104×Oxford Nanopore Technologies(ONT)long reads,and 114×Bionano optical mapping platform,and one de novo assembly-based SV caller using CCS reads.A total of 544 randomly selected SVs were validated by PCR amplification and Sanger sequencing,demonstrating the robustness of our SV *** trio-binning-based haplotype assemblies,we established an SV benchmark for identifying false negatives and false positives by constructing the continuous high-confidence regions(CHCRs),which covered 1.46 gigabase pairs(Gb)and 6882 SVs supported by at least one diploid haplotype *** high-confidence SV calls for a benchmark sample that has been characterized by multiple technologies provides a valuable resource for investigating SVs in human biology,disease,and clinical research.

关键词： Asian benchmark Reference material Structural variation Haplotype-resolved Sanger validation

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对张北6.2级地震预测的回顾和再研究

地震 1999年第3期19卷 267-273页

作者：王林瑛中国地震局地球物理研究所中国北京100081

对张北６．２级地震在测震学前兆图像、预测回顾及总结的基础上，对部分反映较好的测震学预测指标进行了比较系统的预报效能检验和评估，进一步确定和筛选出部分测震学预测方法的最佳三要素预测指标，为各预测指标的三要素界定和预测... 详细信息

对张北６．２级地震在测震学前兆图像、预测回顾及总结的基础上，对部分反映较好的测震学预测指标进行了比较系统的预报效能检验和评估，进一步确定和筛选出部分测震学预测方法的最佳三要素预测指标，为各预测指标的三要素界定和预测效能提供了定量的参考依据。对各种预报方法进行比较系统和客观的预报效能检验和评估，确定和筛选预测方法的最佳三要素预测指标，这不仅是地震预测预报逐步向科学、客观、严谨和实用化方向迈进的重要途径，而且是探索以震源物理为基础和孕震阶段为依据的多学科异常有机结合的综合概率预测的必要前题。

关键词：地震预测效能检验前兆平静前兆震群爆发地震

新区域主义范式下宁夏贺兰山东麓葡萄酒旅游多维融合研究

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北方园艺 2016年第23期 174-179页

作者：王琳瑛宁夏大学经济管理学院宁夏银川750021

"十三五"开局之年,宁夏贺兰山东麓葡萄酒旅游囿于权力和制度的强干预,面临发展优势和现实困境,结合新区域主义范式列出横纵结合的多维开发、利益相关者的多维调适、复合型人才的创新储备及文化认同的融合培育之综合型发展清单,为实现区... 详细信息

"十三五"开局之年,宁夏贺兰山东麓葡萄酒旅游囿于权力和制度的强干预,面临发展优势和现实困境,结合新区域主义范式列出横纵结合的多维开发、利益相关者的多维调适、复合型人才的创新储备及文化认同的融合培育之综合型发展清单,为实现区域内外合作与效益共享的绿色可持续发展提供合理化思路。

关键词：贺兰山东麓新区域主义葡萄酒旅游多维融合

Synthesis of mesoporous high‐silica zeolite Y and their catalytic cracking performance

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Chinese Journal of Catalysis 2022年第7期43卷 1945-1954页

作者： Wenhao Cui Dali Zhu Juan Tan Nan Chen Dong Fan Juan wang Jingfeng Han linying wang Peng Tian Zhongmin Liu National Engineering Laboratory for Methanol to Olefins Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China Department of Catalysis Chemistry and Engineering School of Chemical EngineeringFaculty of ChemicalEnvironmental and Biological Science and TechnologyDalian University of TechnologyDalian 116024LiaoningChina

Mesoporous high‐silica zeolite Y with advantages of improved accessibility of acid sites and mass transport properties is highly desired catalytic materials for oil refinery,fine chemistry and emerg‐ing ***,we report the direct synthesis of mesoporous high‐silica zeolite Y(named MSY,SiO_(2)/Al2O_(3)≥9.8)and their excellent catalytic cracking *** obtained MSY mate‐rials are mesoporous single crystals with octahedral morphology,abundant mesoporosity and ex‐cellent(hydro)thermal *** the acid concentration and acid strength of H‐form MSY are obviously higher than those of commercial ultra‐stable Y(USY),which should be attributed to the uniform Al distribution of MSY *** H‐MSY displays an obviously reduced deactivation rate and improved catalytic activity in the cracking reaction of bulky 1,3,5‐triisopropylbenzene(TIPB),as compared with its mesoporogen‐free counterpart and *** addition,H‐MSY was investigated as catalyst for the cracking of industrial heavy *** MSY‐based catalyst(after aging at 800 oC in 100%steam for 17 h)exhibits superior conversion(7.64%increase)and gasoline yield(16.37%increase)than industrial fluid catalytic cracking(FCC)catalyst under the investigated conditions.

关键词： Mesoporous zeolite FAU Synthesis High‐silica zeolite Y Fluid catalytic cracking

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