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Realizing methanol synthesis from CO and water via the synergistic effect of Cu^(0)/Cu^(+)over Cu/ZrO_(2) catalyst

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Journal of Energy Chemistry 2024年第6期93卷 126-134,I0004页

作者： Yuan Fang Fan Wang Yang Chen Qian Lv Kun Jiang Hua Yang Huibo Zhao Peng Wang Yuyan Gan lizhi wu Yu Tang Xinhua Gao Li Tan Institute of Molecular Catalysis and In Situ/Operando Studies Fujian Key Laboratory of Electrochemical Energy Storage MaterialsState Key Laboratory of Photocatalysis on Energy and EnvironmentCollege of ChemistryFuzhou UniversityFuzhou 350108FujianChina Leibniz-Institut für Katalyse e.V.an der Universität Rostock Albert-Einstein Strasse 9118059 RostockGermany Department of Chemistry Tsinghua UniversityBeijing 100084China State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering College of Chemistry and Chemical EngineeringNingxia UniversityYinchuan 750021Ningxi1China

The optimizing utilization of ca rbon resources has drawn wide attention all over the world,while exploiting the high-efficiency catalytic routes remains a ***,a direct methanol synthesis route is realized from pure CO and H_(2)O over 10%Cu/t-ZrO_(2) catalyst,where the time yield of methanol is144.43 mmol mol_(Cu)^(-1)h^(-1)and the methanol selectivity in hydrocarbons is 100%,The Cu species highly dispersed in the t-ZrO_(2) support lead parts of them in the cationic *** Cu^(+)sites contribute to the dissociation of H_(2)O,providing the H*source for methanol synthesis,while the formed Cu^(0) sites promote the absorption and transfer of H*during the ***,the H_(2)O is even a better H resource than H_(2) due to its better dissociation effectivity in this catalytic *** present work offers a new approach for methanol synthesis from CO and new insight into the process of supplying H donor.

关键词： H_(2)O CO Methanol Cu-based catalysts t-ZrO_(2)

有声阅读与数字阅读、纸质阅读对照实验研究——阅读效果及认知负荷差异比较

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图书情报工作 2024年第9期68卷 56-64页

作者：吴礼志洪星华中师范大学图书馆武汉430079

[目的/意义]比较有声阅读与数字阅读、纸质阅读在阅读效果及认知负荷上的差异,为不同场景下阅读方式的选择及阅读资源建设提供科学依据。[方法/过程]运用对照组实验方法,选取两种不同类型的阅读材料,借鉴PISA阅读理解测评框架编制问卷... 详细信息

[目的/意义]比较有声阅读与数字阅读、纸质阅读在阅读效果及认知负荷上的差异,为不同场景下阅读方式的选择及阅读资源建设提供科学依据。[方法/过程]运用对照组实验方法,选取两种不同类型的阅读材料,借鉴PISA阅读理解测评框架编制问卷测试阅读效果,利用NASA-TLX量表对认知负荷进行测量。而后通过描述统计与混合模型方差分析对实验结果进行定量与定性分析。[结果/结论]有声阅读在简单记忆阅读效果上与数字阅读、纸质阅读没有显著差别,但在深层次阅读效果层面不如数字阅读和纸质阅读。有声阅读的体力负荷与受挫负荷显著高于纸质阅读,有声阅读的努力负荷显著高于数字阅读。据此提出不同阅读方式的适用场景。

关键词：有声阅读数字阅读纸质阅读阅读效果

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“非羁码”的风险隐忧与前景展望

重庆邮电大学学报（社会科学版） 2024年第1期36卷 47-55页

作者：吴立志周雨薇山东科技大学文法学院山东青岛266590

“非羁码”作为数字技术与检察监督的跨界融合产物,不仅助力实现数字赋能“云”上监管,还顺应了我国数字检察创新发展的要求,有力推动了新型法律监督数字化道路的建设。然而,在适用过程中,“非羁码”存在运行困境以及潜在风险,如:研发... 详细信息

“非羁码”作为数字技术与检察监督的跨界融合产物,不仅助力实现数字赋能“云”上监管,还顺应了我国数字检察创新发展的要求,有力推动了新型法律监督数字化道路的建设。然而,在适用过程中,“非羁码”存在运行困境以及潜在风险,如:研发机关权力边界不明晰,对犯罪嫌疑人、被告人个人信息保护的法律规定缺位,诱发“数字伪造”“数字接管”,多元化、系统化的监管联合机制尚未建立等。作为一种新型监管手段,“非羁码”应着力降低自身风险隐患,助力维护人权保障与诉讼权利的有机平衡,以实现数字赋能法律监督的新跨越为目标。这具体包括:明确“非羁码”的功能定位与研发机关的权力边界;加强对数字人权的保障;打破思维定式,以“非羁码”使用者的立场为导向;厘清司法主体地位,坚守“技术服务于法治”的初衷;通过优化协作式监管方法,明确各机关之间的责任分工和数字平台建设及应用的职责,构建多元化联合机制,加强对犯罪嫌疑人、被告人的监管等方面的针对性措施,进一步建构和完善应对新时代数字化的监管体系,助力实现“加快建设网络强国、数字强国”的美好愿景。

关键词：非羁码数字检察智慧检务数字人权数字伪造

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Burning rate analysis of laser controlled 5-aminotetrazole propellant

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Defence Technology（防务技术） 2023年第4期22卷 10-27页

作者： Nianbai He Ruiqi Shen Luigi T.DeLuca lizhi wu Wei Zhang Yinghua Ye School of Chemical Engineering Nanjing University of Science and Technology210094JiangsuChina Institute of Space Propulsion Nanjing University of Science and Technology210094JiangsuChina Space Propulsion Laboratory(Ret) Department of Aerospace Science and TechnologyPolitecnico di Milano20156MilanItaly

As an innovative propulsion technique, laser augmented chemical propulsion(LACP) seems superior to the traditional ones. However, the corresponding combustion theories have still to be ascertained for LACP. Burning rate of 5-aminotetrazole(5-ATZ) propellant has been studied by testing pressed samples under different combustor pressures and laser powers. Based on micro computed tomography(Micro CT),an advanced thickness-over-time(TOT) method to characterize the regression of the produced nonplanar burning surface is established. Because of a shell structure covering the combustion surface,the burning rate of the implemented 5-ATZ propellant is not constant during laser ablation. Resorting to functional fitting, a new law of non-constant burning including the effect of the observed unique burning surface structures is proposed. Accordingly, applicable combustion conditions of 5-ATZ based propellants have been preliminarily speculated for future research activities.

关键词： 5-Aminotetrazole(5-ATZ) Laser-augmented chemical propulsion(LACP) Non-constant burning rate Micro computed tomography(MicroCT) Non-planar burning surface

浅谈气膜煤场在广东某大型海边火力发电厂上的应用

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南方能源建设 2024年第S01期11卷 122-126页

作者：谭学谦严建军吴立志彭红福蔡继明中国能源建设集团广东省电力设计研究院有限公司广东广州510663 深圳市深汕特别合作区华润电力有限公司广东汕尾516400

[目的]随着环保政策的日趋严格,国内大型燃煤电厂普遍采用封闭型煤场以避免煤尘外逸污染环境。近年来气膜作为一种新型封闭环保建筑形式,在储煤场的应用上开始逐渐增多。[方法]结合广东某大型海边火力发电厂首次在华南地区应用大跨度气... 详细信息

[目的]随着环保政策的日趋严格,国内大型燃煤电厂普遍采用封闭型煤场以避免煤尘外逸污染环境。近年来气膜作为一种新型封闭环保建筑形式,在储煤场的应用上开始逐渐增多。[方法]结合广东某大型海边火力发电厂首次在华南地区应用大跨度气膜煤场的案例,从气膜煤场方案比选、选型设计、布置等方面做出论证分析,[结果]与传统钢结构煤场相比,气膜在大跨度煤场中的应用优势明显。[结论]促进气膜煤场在大型火力发电厂上的推广应用。

关键词：气膜煤场方案比选选型设计布置火力发电厂

A study on the temperature sensitivity of NMR porosity in porous media based on the intensity of magnetization Dedicated to the special issue “Magnetic Resonance in Porous Media”

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Magnetic Resonance Letters 2024年第1期4卷 28-39页

作者： Lu Zhang lizhi Xiao Wensheng wu Guangzhi Liao Yan Zhang Sihui Luo Xinglong Lei National Key Laboratory of Petroleum Resources and Engineering China University of PetroleumBeijing102249China College of Geophysics China University of PetroleumBeijing102249China PetroChina Huabei Oilfield Company China National Petroleum CorporationRenqiu062552China

The measurement of nuclear magnetic resonance(NMR)porosity is affected by *** considering the impact of NMR logging tools,this phenomenon is mainly caused by variations in magnetization intensity of the measured system due to temperature fluctuations and difference between the temperature of the porous medium and calibration *** this study,the effect of temperature was explained based on the thermodynamic theory,and the rules of NMR porosity responses to temperature changes were identified through core physics *** addition,a method for correcting the influence of temperature on NMR porosity measurement was proposed,and the possible factors that may affect its application were also discussed.

关键词： NMR porosity Temperature Porous media Intensity of magnetization

Allelic reprogramming of chromatin states in human early embryos

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National Science Review 2024年第3期11卷 58-71页

作者： Shenli Yuan Lei Gao Wenrong Tao Jianhong Zhan Gang Lu Jingye Zhang Chuanxin Zhang lizhi Yi Zhenbo Liu Zhenzhen Hou Min Dai Han Zhao Zi-Jiang Chen Jiang Liu Keliang wu Center for Reproductive Medicine Shandong University CAS Key Laboratory of Genome Sciences and Information Collaborative Innovation Center of Genetics and Development Beijing Institute of Genomicsand China National Center for BioinformationChinese Academy of Sciences University of Chinese Academy of Sciences CUHK-SDU Joint Laboratory on Reproductive Genetics School of Biomedical Sciences the Chinese University of Hong Kong Key Laboratory of Reproductive Endocrinology of the Ministry of Education Shandong University Center for Reproductive Medicine Ren Ji Hospital School of Medicine Shanghai Jiao Tong University CAS Center for Excellence in Animal Evolution and Genetics Chinese Academy of Sciences

The reprogramming of parental epigenomes in human early embryos remains elusive. To what extent the characteristics of parental epigenomes are conserved between humans and mice is currently unknown. Here,we mapped parental haploid epigenomes using human parthenogenetic and androgenetic embryos. Human embryos have a larger portion of genome with parentally specific epigenetic states than mouse *** allelic patterns of epigenetic states for orthologous regions are not conserved between humans and mice. Nevertheless, it is conserved that maternal DNA methylation and paternal H3K27me3 are associated with the repression of two alleles in humans and mice. In addition, for DNA-methylation-dependent imprinting, we report 19 novel imprinted genes and their associated germline differentially methylated regions. Unlike in mice, H3K27me3-dependent imprinting is not observed in human early ***, allele-specific epigenomic reprogramming is different in humans and mice.

关键词： human embryo epigenetics reprogramming DNA methylation H3K27me3 chromatin accessibility

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丙烷脱氢耦合表面氧化过程选择性制备丙烯

科学通报 2023年第28期68卷 3715-3717页

作者：邓辉辉孙琴吴立志福州大学化学学院分子催化与原位表征研究所福州350108

丙烯作为石油化工的重要原料,主要来源于石脑油的蒸汽裂解和原油催化裂化等[1],但其过度依赖传统化石资源,存在高能耗和低丙烯选择性等缺点.目前,利用廉价的丙烷直接脱氢制丙烯(PDH,C_(3)H_(8)→C_(3)H_(6)+H_(2))已经成功实现商业化,... 详细信息

丙烯作为石油化工的重要原料,主要来源于石脑油的蒸汽裂解和原油催化裂化等[1],但其过度依赖传统化石资源,存在高能耗和低丙烯选择性等缺点.目前,利用廉价的丙烷直接脱氢制丙烯(PDH,C_(3)H_(8)→C_(3)H_(6)+H_(2))已经成功实现商业化,但这个过程存在高吸热和受化学平衡转化率限制,同时在反应过程中易积碳使得需对催化剂频繁再生.

关键词：平衡转化率丙烷脱氢蒸汽裂解丙烯选择性直接脱氢石油化工表面氧化化石资源

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动力电池相变控温材料关键问题分析

化工新型材料 2022年第2期50卷 258-264页

作者：张云芳李建立吴立志北京工业大学环境与生命学部北京100022 北京石油化工学院机械工程学院北京102617

动力电池相变控温材料研发作为动力电池热管理技术中的一个分支,近年来逐渐成为一个研究热点。定型封装、导热增强和减小与电池单体表面间的接触热阻是动力电池相变控温材料研发过程中需同时解决的三方面问题。分析了近些年国内外关于... 详细信息

动力电池相变控温材料研发作为动力电池热管理技术中的一个分支,近年来逐渐成为一个研究热点。定型封装、导热增强和减小与电池单体表面间的接触热阻是动力电池相变控温材料研发过程中需同时解决的三方面问题。分析了近些年国内外关于这三方面问题的研究现状,指出开发高导热柔性定型相变材料是同时解决这些问题的有效方法,柔性基体选择及平衡热导率与相变潜热之间的关系是高导热柔性定型相变材料研发中需解决的关键问题。

关键词：动力电池热管理定型封装导热增强接触热阻高导热柔性相变材料