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33篇 您的检索式:作者名="Qingze"
    题名 作者 年代 出处 被引量
1Catalytic performance of hierarchical H-ZSM-5/MCM-41 for methanol dehydration to dimethyl ether显示文摘Micro-mesoporous composite molecular sieves H-ZSM-5/MCM-41 were prepared by the hydrothermal technique with alkali-treated H-ZSM-5zeolite as the source and characterized by scanning electron microscopy,transmission electron microscopy,energy dispersive spectroscopy,X-ray diffraction,N2 adsorption-desorption measurement and NH3 temperature-programmed desorption.The catalytic performances for the methanol dehydration to dimethyl ether over H-ZSM-5/MCM-41 were evaluated.Among these catalysts,H-ZSM-5/MCM-41 prepared with NaOH dosage (nNa/nSi) varying from 0.4 to 0.47 presented excellent catalytic activity with more than 80%methanol conversion and 100%dimethyl ether selectivity in a wide temperature range of 170—300℃,and H-ZSM-5/MCM-41 prepared with nNa/nSi=0.47 showed constant methanol conversion of about 88.7%,100% dimethyl ether selectivity and excellent lifetime at 220℃.The excellent catalytic performances were due to the highly active and uniform acidic sites and the hierarchical porosity in the micro-mesoporous composite molecular sieves.The catalytic mechanism of H-ZSM-5/MCM-41 for the methanol dehydration to dimethyl ether process was also discussed.Yu Sang Hongxiao Liu Shichao He Hansheng Li Qingze Jiao Qin Wu Kening Sun 2013Journal of Energy Chemistry2013,22,5:7
2Catalytic performance of acidic ionic liquid-functionalized silica in biodiesel production显示文摘Acidic ionic liquid([BsAIm][OTf]) was immobilized on sulfhydryl-group-modified SiO2(MPS-SiO2) via free radical addition reaction. The[BsAIm][OTf] loading on acidic ionic liquid-functionalized silica([BsAIm][OTf]/SiO2) was controlled through tuning the sulfydryl(SH)content of MPS-SiO2. All the samples were characterized by FT-IR, elemental analysis, N2adsorption-desorption measurements and TGDTA. The catalytic performance of [BsAIm][OTf]/SiO2in the esterification of oleic acid and the transesterification of glycerol trioleate for biodiesel production was investigated. The results showed that with the increase of [BsAIm][OTf] loading on SiO2the specific surface area and pore volume of [BsAIm][OTf]/SiO2decreased, and the pore diameter of [BsAIm][OTf]/SiO2narrowed. In the esterificaiton of oleic acid, the oleic acid conversion increased with the increasing [BsAIm][OTf] loading. In the transesterification of glycerol trioleate, with the increasing[BsAIm][OTf] loading the glycerol trioleate conversion decreased and the selectivities to glycerol monooleate and methyl oleate increased.Bin Zhen Qingze Jiao Qin Wu Hansheng Li 2014Journal of Energy Chemistry2014,23,1:3
3Intrinsic kinetics of oxidative dehydrogenation of propane in the presence of CO_2 over Cr/MSU-1 catalyst显示文摘The intrinsic kinetics of oxidative dehydrogenation of propane with CO2 has been investigated over Cr/MSU-1 catalyst in a fixed bed reactor. Without limitations of both internal and external diffusion, intrinsic kinetic data were obtained under the following conditions: 490-530 °C, space velocity of 3600?6000 mL·h-1·g-1 and 3/1 molar ratio for CO2/C3H8 under normal pressure. Based on Langmuir-Hinshelwood mechanism, the kinetic models were established, and they were validated by statistical analysis. The parameters were estimated using Simplex Method combined with Universal Global Optimization Algorithm. The model, taking the surface reaction process as the rate-determining step, is the best one in agreement with the experimental data.Haitao Liu Zhao Zhang Huiquan Li Qingze Huang 2011Journal of Natural Gas Chemistry2011,20,3:2
4Precision preview-based stable-inversion for nonlinear nonminimum-phase systems: The VTOL example显示文摘Qingze Zou Santosh Devasia 2006Automatica2006,,1:2
5Aberrant functional connectivity network in subjective memory complaint individuals relates to pathological biomarkers显示文摘Background:Individuals with subjective memory complaints(SMC)feature a higher risk of cognitive decline and clinical progression of Alzheimer’s disease(AD).However,the pathological mechanism underlying SMC remains unclear.We aimed to assess the intrinsic connectivity network and its relationship with AD-related pathologies in SMC individuals.Methods:We included 44 SMC individuals and 40 normal controls who underwent both resting-state functional MRI and positron emission tomography(PET).Based on graph theory approaches,we detected local and global functional connectivity across the whole brain by using degree centrality(DC)and eigenvector centrality(EC)respectively.Additionally,we analyzed amyloid deposition and tauopathy via florbetapir-PET imaging and cerebrospinal fluid(CSF)data.The voxel-wise two-sample T-test analysis was used to examine between-group differences in the intrinsic functional network and cerebral amyloid deposition.Then,we correlated these network metrics with pathological results.Results:The SMC individuals showed higher DC in the bilateral hippocampus(HP)and left fusiform gyrus and lower DC in the inferior parietal region than controls.Across all subjects,the DC of the bilateral HP and left fusiform gyrus was positively associated with total tau and phosphorylated tau181.However,no significant between-group difference existed in EC and cerebral amyloid deposition.Conclusion:We found impaired local,but not global,intrinsic connectivity networks in SMC individuals.Given the relationships between DC value and tau level,we hypothesized that functional changes in SMC individuals might relate to pathological biomarkers.Kaicheng Li Xiao Luo Qingze Zeng Yeerfan Jiaerken Xiaojun Xu Peiyu Huang Zhujing Shen Jingjing Xu Chao Wang Jiong Zhou Min-Ming Zhang the Alzheimer’s Disease Neuroimaging Initiative 2018Translational Neurodegeneration2018,7,1:2
6Montmorillonite as a multifunctional adsorbent can sim-uhaneously remove crystal violet, cetyltrimethylammo- nium, and 2 - naphthol from water 显示文摘Zhu Runliang Chen Qingze Liu Hanyang 2014Appl Clay Sci2014,8889,1:1
7Microemulsion-based synthesis of porous Co-Ni ferrite nanorods and their magnetic properties显示文摘GAO Ying ZHAO Yun JIAO Qingze 0,,:1
8The forma?tion of honeycomb structure in polyphenylene oxide films显示文摘Tian Ye Jiao Qingze Ding Huaiyu etal 2006Polymer2006,47,11:1
9HZSM-5/MCM-41 composite molecular sieves for the catalytic cracking of endo- thermic hydrocarbon fuel:Nano-ZSM-5 zeolites as the source 显示文摘Sang Yu Jiao Qingze Li Hansheng 2014Journal of Nanoparticle Research2014,16,12:1
10Precision tracking of driving wave forms for inertial reaction devices 显示文摘ZOU Qingze GIESSEN C V GARBINI J 2005Review of Scientific Instruments2005,76,2:1
11Cu/Co/Cr Nanocomposites Obtained from Hydrotalcite Precursors as Catalysts for Thermal Decomposition of Ammonium Perchlorate显示文摘A series of Cu/Co/Cr nanocomposites with different Cu/Co/Cr molar ratios were obtained by calcination of Cu/Co/Cr hydrotalcites precursors,which were prepared by a co-precipitation reaction.X-ray diffraction,inductively coupled plasma analysis,and transmission electron microscopy were used to characterize the structure,composition,and morphology of Cu/Co/Cr nanocomposites.The results show that Cu/Co/Cr nanocomposites have both CuCr2O4and CoCr2O4spinel phase.The particle size of Cu/Co/Cr nanocomposites is 15–20 nm and the specific surface area is 95–115 m2/g.Cu/Co/Cr nanocomposites were used as new catalysts for improving thermal decomposition of ammonium perchlorate(AP).Their catalytic activities were investigated using differential thermal analysis and thermal gravimetric analyzer coupled with an online mass spectrometer.The results show that the decomposition temperature of AP lowered 132–146 °C by adding 4 wt% Cu/Co/Cr nanocomposites.Catalytic activities of the prepared nanocomposites depend on the calcinations temperature and addition amount of corresponding nanocomposites.The possible catalytic mechanism of Cu/Co/Cr nanocomposites was also studied and discussed.Hongbo Liu Zhiyong Huang Bingzhi Guo Qingze Jiao Zhiyong Xiong 2014Acta Metallurgica Sinica(English Letters)2014,27,2:1
12Vapor diffu-sion synthesis of rugby-shaped CoFe 2 O 4 / graphene composites asabsorbing materials显示文摘Zhang Shenli Jiao Qingze Hu Ju 2015Journal of Alloys and Compounds2015,630,:1
13Control Issues in High-speed AFM for Biological Applications: Collagen Imaging Example显示文摘Zou Qingze Leang K K Sadoun E 2004Asian Journal of Control2004,6,2:1
14From spent Mg/A1 layered double hydroxide to porous carbon materials 显示文摘Laipan Minwang Zhu Rurdiang Chert Qingze 2015J Hazard Mater2015,300,:1
15Vapor diffu-sion synthesis of rugby-shaped CoFe 2 O 4 / graphene composites asabsorbing materials显示文摘Zhang Shenli Jiao Qingze Hu Ju 2015Journal of Alloys and Compounds2015,630,:1
16Vapor diffusion synthesis of CoFe2O4 hollow sphere /graphene composites as absorbing materials显示文摘Fu Min Jiao Qingze Zhao Yun et aI 2014Journal of Materials Chemistry A2014,2,3:1
17Iterative control approach to compen- sate for both the hysteresis and the dynamics effects of piezo actuators 显示文摘Wu Ying Zou Qingze 2007IEEE Transactions on Control Systems Tech- nology2007,15,5:1
18Mixed oxides derived from Cu-Co layered double hydroxide nanorods:preparation,characterization and their catalytic activities显示文摘Liu Hongbo Jiao Qingze Zhao Yun 2010Journal of Alloys and Compounds2010,496,12:1
19Cu/Fe hydrotalcite derived mixed oxides as new catalyst for thermal decomposition of ammonium perchlorate显示文摘Liu Hongbo Jiao Qingze Zhao Yan 2010Mater Lett2010,64,15:1
20Decorating Mg/Fe oxide nanotubes with nitrogen-doped carbon nanotubes显示文摘Cao Yong Jiao Qingze Zhao Yun 2011Journal of Alloys and Compounds2011,509,38:1
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