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CuCl_(14)Pc/Y纳米复合材料的制备、表征及其催化性能的研究

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无机材料学报 2002年第3期17卷 539-544页

作者：杨槐馨李瑞丰杜君范彬彬谢克昌太原理工大学精细化工研究所一碳化学与化工国家重点实验室山西太原030024

用沸石合成法制备了ＣｕＣｌ１４Ｐｃ/Ｙ分子筛纳米复合材料(简称为ＣｕＣｌ１４Ｐｃ/ｎａｎｏ－Ｙ),考察了合成条件对纳米复合材料的粒度影响．用ＸＲＤ、ＩＣＰ、ＴＧ－ＤＴＡ、ＴＥＭ、ＦＴＩＲ、ＵＶ－ｖｉｓ及催化反应等对其性能... 详细信息

用沸石合成法制备了ＣｕＣｌ１４Ｐｃ/Ｙ分子筛纳米复合材料(简称为ＣｕＣｌ１４Ｐｃ/ｎａｎｏ－Ｙ),考察了合成条件对纳米复合材料的粒度影响．用ＸＲＤ、ＩＣＰ、ＴＧ－ＤＴＡ、ＴＥＭ、ＦＴＩＲ、ＵＶ－ｖｉｓ及催化反应等对其性能作了表征．结果表明:铜酞菁(ＣｕＣｌ１４Ｐｃ)经过水热晶化后,部分被分装在纳米Ｙ型分子筛的空腔中,其催化氧化性能较普通ＣｕＣｌ１４Ｐｃ/Ｙ分子筛复合材料有很大提高．

关键词： CuCl14Pc/Y 纳米复合材料制备表征催化性能铜酞菁分子筛环己烷氧化反应催化剂

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PVC的热解/红外(Py/FTIR)研究

燃料化学学报 2002年第6期30卷 569-572页

作者：田原宇吕永康谢克昌国家C1化学化工重点实验室山西省煤科学重点实验室太原理工大学山西太原030024

采用热解 /红外联用仪 (Py/FTIR)考察了PVC的热解过程 ,结果表明 ,PVC在 2 0 0℃时开始放出HCl,30 0℃左右达到最大 ,在红外谱图上HCl气体的振转吸收区是 310 0cm-1～ 2 6 0 0cm-1,有P支和R支出现 ;随后—CH2 —基在 2 86 0cm-1和 2 9... 详细信息

采用热解 /红外联用仪 (Py/FTIR)考察了PVC的热解过程 ,结果表明 ,PVC在 2 0 0℃时开始放出HCl,30 0℃左右达到最大 ,在红外谱图上HCl气体的振转吸收区是 310 0cm-1～ 2 6 0 0cm-1,有P支和R支出现 ;随后—CH2 —基在 2 86 0cm-1和 2 930cm-1处的吸收明显增强 ,可认为是生成的多烯碎片进一步裂解生成脂肪族化合物的结果 ;同时有芳烃在 16 2 0cm-1、30 10cm-1和 90 0cm-1～ 6 0 0cm-1处的吸收出现。这是由于除了部分多烯碎片无规则断裂形成脂肪烃类物质的挥发分外 ,还有一部分通过分子重排、环化形成芳烃结构 ,其中的一部分以芳烃类物质进入挥发分 ,另一部分聚合形成稠环芳香族物质 ,最后变成焦粒。通过上述研究 ,提出了PVC的热解机理 ,即PVC首先脱出HCl气体 ,进一步热解产生多烯结构 ,并通过分子重排、环化形成芳烃结构。

关键词： PVC 聚氯乙烯热解/红外光谱联用仪塑料

FK506 contributes to peripheral nerve regeneration by inhibiting neuroinflammatory responses and promoting neuron survival

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Neural Regeneration Research 2025年第7期20卷 2108-2115页

作者： Yuhui Kou Zongxue Jin Yusong Yuan Bo Ma Wenyong xie Na Han Department of Trauma and Orthopedics Peking University People’s HospitalBeijingChina National Center for Trauma Medicine Peking University People’s HospitalBeijingChina key Laboratory of Trauma and Neural Regeneration(Peking University) Ministry of EducationBeijingChina Trauma Medicine Center Peking University People’s HospitalBeijingChina Department of Orthopedics China-Japan Friendship HospitalBeijingChina

FK506(Tacrolimus)is a systemic immunosuppressant approved by the *** and Drug ***506 has been shown to promote peripheral nerve regeneration,however,its precise mechanism of action and its pathways remain *** this study,we established a rat model of sciatic nerve injury and found that FK506 improved the morphology of the injured sciatic nerve,increased the numbers of motor and sensory neurons,reduced inflammatory responses,markedly improved the conduction function of the injured nerve,and promoted motor function *** findings suggest that FK506 promotes peripheral nerve structure recovery and functional regeneration by reducing the intensity of inflammation after neuronal injury and increasing the number of surviving neurons.

关键词： FK506 inflammation motor neurons nerve regeneration neuron peripheral nerve injury sensory neurons

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煤演化过程中力化学作用与构造煤结构

河南理工大学学报（自然科学版） 2005年第2期24卷 95-99页

作者：张玉贵张子敏谢克昌太原理工大学一碳化学与化工国家重点实验室山西太原030024 河南理工大学瓦斯地质研究所河南焦作454003

应用力化学理论和煤结构分析方法,对煤的力化学作用类型、力化学的能量来源、作用形式及其对煤结构演化的影响进行了研究;结果表明水平挤压应力是煤力化学作用的重要能源,其挤压剪切作用,不仅使煤发生变形、破坏等物理效应,形成了构造煤... 详细信息

应用力化学理论和煤结构分析方法,对煤的力化学作用类型、力化学的能量来源、作用形式及其对煤结构演化的影响进行了研究;结果表明水平挤压应力是煤力化学作用的重要能源,其挤压剪切作用,不仅使煤发生变形、破坏等物理效应,形成了构造煤,而且使煤结构发生一系列的化学效应:一方面煤结构发生聚合、异构、重排、芳构,形成更大分子网络结构;另一方面,在短时间内分子断裂、分解形成液态烃(低分子化合物)和气态烃(瓦斯).作者认为力化学作用是煤结构演化的重要过程,不仅加速煤的变质过程,而且加速烃的转化,有利于低分子化合物和瓦斯的富集,构造煤是力化学作用的产物.

关键词：力化学构造煤大分子结构低分子化合物:瓦斯

Operando and reversible manipulation of Pt electrocatalytic properties through its substrate phase transition

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Science China Chemistry 2025年

作者： Hongfei Liu Yi xie changzheng Wu Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China key Laboratory of Precision and Intelligent Chemistry School of Chemistry and Materials ScienceCollaborative Innovation Center of Chemistry for Energy Materials (iChEM)and CAS Center for Excellence in NanoscienceUniversity of Science and Technology of China Institute of Energy Hefei Comprehensive National Science Center

The lattice strain is considered critical for determining the catalytic activity of metal catalysts such as Pt. However, the dynamic manipulation of Pt lattice strain under reaction conditions to directly examine its catalytic effect has not been achieved. In this study, we realized the reversible manipulation of Pt electrocatalytic properties under electrochemical conditions by tuning the Pt lattice strain with the temperature-controlled Martensite-Austenite phase transition of the shape memory NiTi alloy *** enabled establishing a straightforward relationship between the strain-induced electronic structure transformation and electrocatalytic activity leaping. The binding strength between Pt and surface oxygen species was confirmed as the critical factor that dominated the hydrogen evolution and the oxygen reduction activities. In contrast, the oxygen evolution activity was barely affected by NiTi substrate phase transition.

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煤高效制合成气装置传热特性的模拟研究

太原理工大学学报 2011年第2期42卷 174-177页

作者：杨巨生陈清军姚翠兰张永发谢克昌太原理工大学电气与动力工程学院山西电力职业技术学院太原030021 太原理工大学煤科学与技术山西省和教育部重点实验室太原030024

基于Eulerian双流体模型,利用Fluent数值模拟软件对煤高效制合成气装置进行运行状态模拟,重点讨论在不同内筒半径Ri和外筒半径Ro的条件下,气化装置内温度和空隙率分布情况。通过对理论模型的合理简化及网格划分,利用Fluent软件模拟出该... 详细信息

基于Eulerian双流体模型,利用Fluent数值模拟软件对煤高效制合成气装置进行运行状态模拟,重点讨论在不同内筒半径Ri和外筒半径Ro的条件下,气化装置内温度和空隙率分布情况。通过对理论模型的合理简化及网格划分,利用Fluent软件模拟出该装置运行15 s内的温度分布和固体颗粒物分布状态。通过对模拟数据的分析和比较,得出,在Ro/Ri=2,Ro/Ri=3,Ro/Ri=5三种参数下,分离器内的温度达到预热煤温度600 K左右,且在2

关键词：煤气化流化床 Fluent软件两相流模型数值模拟

Observation of topological charge transformations in acoustic vortex using passive periodic systems

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 140-147页

作者： Di-Chao Chen xie Liu changqing Xu Da-Jian Wu Ying Cheng Xiao-Jun Liu School of Physics and Technology Nanjing Normal University key Laboratory of Modern Acoustics School of Physics Nanjing University

Vortex transmutation utilizes a periodic system, which not only enables the alteration of the topological charge(TC) of unstable input vortices but also facilitates their transformation into stable structures. This approach is crucial for investigating the characteristics of vortices in various wave systems. Here, we achieve acoustic vortex TC transmutation by employing a welldesigned dual-structured plate external system(DPES). The interactions between the acoustic vortex and the finite-order discrete rotational symmetry lead to the transformation of its topological charge when complete rotational symmetry is broken to Nthorder discrete symmetry. Our results experimentally demonstrate the acoustic vortex TC transmutation based on passive artificial structures, enabling numerous applications in particle manipulation and information multiplexing as well as advancing our understanding and control over free-space acoustic vortices.

关键词： acoustic vortex topological charge transformation artificial structure

Study on the hydrogen absorption properties of a YGdTbDyHo rare-earth high-entropy alloy

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 127-135页

作者： Tongyue Li Ziliang xie Wenjiao Zhou Huan Tong Dawen Yang Anjia Zhang Yuan Wu Xiping Song State key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing 100083China Whole Win(Beijing)Materials Sci.&Tech.Co. Ltd.Beijing 100083China

This study investigated the microstructure and hydrogen absorption properties of a rare-earth high-entropy alloy(HEA),*** indicated that the YGdTbDyHo alloy had a microstructure of equiaxed grains,with the alloy elements distributed *** hydrogen absorption,the phase structure of the HEA changed from a solid solution with an hexagonal-close-packed(HCP)structure to a high-entropy hydride with an faced-centered-cubic(FCC)structure without any secondary phase *** alloy demonstrated a maximum hydrogen storage capacity of 2.33 H/M(hydrogen atom/metal atom)at 723 K,with an enthalpy change(ΔH)of-141.09 kJ·mol^(-1)and an entropy change(ΔS)of-119.14 J·mol^(-1)·K^(-1).The kinetic mechanism of hydrogen absorption was hydride nucleation and growth,with an apparent activation energy(E_(a))of 20.90 kJ·mol^(-1).Without any activation,the YGdTbDyHo alloy could absorb hydrogen quickly(180 s at 923 K)with nearly no incubation period *** reason for the obtained value of 2.33 H/M was that the hydrogen atoms occupied both tetrahedral and octahedral *** results demonstrate the potential application of HEAs as a high-capacity hydrogen storage material with a large H/M ratio,which can be used in the deuterium storage field.

关键词： rare-earth high-entropy alloy hydrogen absorption capacity pressure–composition–temperature curves kinetics

Stiffness-tunable biomaterials provide a good extracellular matrix environment for axon growth and regeneration

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Neural Regeneration Research 2025年第5期20卷 1364-1376页

作者： Ronglin Han Lanxin Luo Caiyan Wei Yaru Qiao Jiming xie Xianchao Pan Juan Xing Department of Pathophysiology School of Basic Medical SciencesSouthwest Medical UniversityLuzhouSichuan ProvinceChina Department of Medicinal Chemistry School of PharmacySouthwest Medical UniversityLuzhouSichuan ProvinceChina

Neuronal growth, extension, branching, and formation of neural networks are markedly influenced by the extracellular matrix—a complex network composed of proteins and carbohydrates secreted by cells. In addition to providing physical support for cells, the extracellular matrix also conveys critical mechanical stiffness cues. During the development of the nervous system, extracellular matrix stiffness plays a central role in guiding neuronal growth, particularly in the context of axonal extension, which is crucial for the formation of neural networks. In neural tissue engineering, manipulation of biomaterial stiffness is a promising strategy to provide a permissive environment for the repair and regeneration of injured nervous tissue. Recent research has fine-tuned synthetic biomaterials to fabricate scaffolds that closely replicate the stiffness profiles observed in the nervous system. In this review, we highlight the molecular mechanisms by which extracellular matrix stiffness regulates axonal growth and regeneration. We highlight the progress made in the development of stiffness-tunable biomaterials to emulate in vivo extracellular matrix environments, with an emphasis on their application in neural repair and regeneration, along with a discussion of the current limitations and future prospects. The exploration and optimization of the stiffness-tunable biomaterials has the potential to markedly advance the development of neural tissue engineering.

关键词： alginate axon growth biomaterials extracellular matrix neural repair neurons neuroregeneration polyacrylamide polydimethylsiloxane stiffness