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131篇 您的检索式:作者名="Qingde"
    题名 作者 年代 出处 被引量
1Catalytic Oxidation of Dimethyl Ether to Dimethoxymethane over Cs Modified H_3PW_(12)O_(40)/SiO_2 Catalysts显示文摘为一步舞的吸引人的利用线路到 dimethoxymethane 的暗淡乙醇醚的催化氧化成功地在 H3PW12O40 (40%)/SiO2 催化剂上被执行,由 C, K, Ni,和 V 修改了。H3PW12O40 (40%)/SiO2 的 C 修正给了 20% 暗淡乙醇醚变换和 34.8% dimethoxymethane 选择的最有希望的结果。Dimethoxymethane 能经由通过在酸地点之间的 synergistic 效果从暗淡乙醇醚分解的 methoxy 组被综合, C 的氧化还原作用地点修改了 H3PW12O40 (40%)/SiO2。Qingde Zhang Yisheng Tan Caihong Yang Yizhuo Han Jun Shamoto Noritatsu Tsubaki 2007Journal of Natural Gas Chemistry2007,16,3:7
2黄河废弃三角洲叶瓣海岸侵蚀与岸线演化显示文摘A statistic analysis predicting coastal change of the Yellow River abandoned delta lobe formed from 1964 to 1976 using Landsat TM imagery was conducted by calculating the coastal erosion/accumulation rates obtained from four different classic profiles and plotting the change curves of coastline with time. The studies showed that the regularity of the evolution of the coastline was very obvious after the delta lobe was abandoned. The coastal evolution can be divided into three different phases: erosion phase, transition phase and cyclical change phase. At present, the coast has evolved to the cyclical change phase. The natural coastline change cycle is 4 years between the dam and is 5years to the west of the dam. In the cyclical change phase, the quasi-equilibrium line of the coast was located near the coastline of 1996, the current coast may recede 1.79 km to reach the natural equilibrium coastline. Therefore, some measures must be taken to protect the dam or the dam will be destroyed by the force of nature. The curves also revealed the magnitude of erosion/accumulation rates would decrease gradually with time. The results of the study offer guidance for coast protection, and proves that the evolution of silty coast actually was a cyclical change process too.李安龙 李广雪 曹立华 Zhang Qingde DENG Shenggui 2004Journal of Geographical Sciences2004,14,4:5
3Stripping of uranium from an ionic liquid medium by TOPO-modified supercritical carbon dioxide显示文摘UO2+2, which is extracted from the aqueous phase into the 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide(C2mim NTf2) ionic liquid phase with octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide(CMPO), can be stripped by supercritical CO2. Trioctylphosphine oxide(TOPO), the modifier added to the supercritical CO2 phase, enhances the stripping efficiency by up to 99%.Jing Fu Qingde Chen Xinghai Shen 2015Science China Chemistry2015,58,3:4
4A further understanding of the cation exchange mechanism for the extraction of Sr^(2+) and Cs^+ by ionic liquid显示文摘The cation exchange mechanism was further investigated during the extraction of Sr 2+ and Cs+ using the extractant dicyclo- hexano-18-crown-6 (DCH18C6) in an ionic liquid (IL)1-ethyl-3-methyimidazolium bis[(trifluoromethyl)sulfonyl]imide (C2 mimNTf2 ). The concentrations of both the cation C2 mim + and the anion NTf2 in aqueous phase were detected. The con-centration of NTf2 in the aqueous phase decreased as Sr2+ or Cs+ exchanged into the IL phase. Addition of C2 mim + or NTf2 as well as the variation of the solubility of C2 mimNTf2 influenced the extraction efficiency of Sr2+ or Cs+ .SUN TaoXiang SHEN XingHai CHEN QingDe 2013Science China Chemistry2013,56,6:4
5Solvent extraction of thorium(Ⅳ) using W/O microemulsion显示文摘The extraction of thorium(IV) was investigated using two types of W/O microemulsion,one of which was formed by a surface-active saponified extractant sodium bis(2-ethylhexyl) phosphate(NaDEHP) and the other was formed by a mixture of an anionic surfactant sodium bis(2-ethylhexyl) sulfosuccinate(AOT) and an extractant bis(2-ethylhexyl)phosphoric acid(HDEHP) as the cosurfactant.The extraction capacities of the above two systems were higher than that of the HDEHP extraction system.High concentration of NaNO 3 showed no influence on the extraction in the NaDEHP based W/O microemulsion system,whilst reduced the extractability in the AOT-HDEHP W/O microemulsion system.The mechanism in acidic condition was demonstrated by the log-log plot method.The structure of the aggregations and the water content in the organic phase after extraction were measured by dynamic light scattering and Karl Fischer water titration,respectively.It was found that NaDEHP based W/O microemulsion broke up after extraction,while AOT-HDEHP W/O microemulsion was reserved.GAO Song SHEN XingHai CHEN QingDe GAO HongCheng 2012Science China Chemistry2012,55,9:4
6Biodiesel Production from Waste Edible Oils and Grease Containing Free Fatty Acids显示文摘Till now, most part of the biodiesel is produced from the refined vegetable oils using methanol as feedstock in the presence of an alkali catalyst. However, large amount of waste edible oils and grease are available. The difficulty with alkali-catalyzed esterification of these oils is that they often contain large amount of free fatty acids (FFA), polymers and decomposition products. These free fatty acids can quickly react with the alkali catalyst to produce soaps that inhibit the separation of the ester and glycerine. An esterification and transesterification process is developed to convert the high FFA oil to its monoesters. The first step, the acidcatalyzed esterification with glycerine and these FFA reduces the FFA content of the oil and grease to less than3%, and then an azeotropic distillation solvent is used to remove the water. The major factors affecting the conversion efficiency of the process such as glycerol to free fatty acid molar ratio, catalyst amount, reaction temperature and reaction duration are analyzed. The second step, alkali-catalyzed transesterification process converts the products of the first step to its monoesters and glycerol, and then the glycerol is recycled for utilization in the first step. Technical indicators of the biodiesel product can meet the ASTM 6751 standard.Huang Fenghong Guo Pingmei Huang Qingde 2005China Petroleum Processing & Petrochemical Technology2005,7,3:3
7PACKINGS OF THE COMPLETE DIRECTED GRAPH WITH m-CIRCUITS显示文摘§1IntroductionLetDKvdenotethecompletedirectedsymmetricgraphwithvvertices,whereanytwodistinctverticesxandyarejoinedbyexactlytw...LIANG ZHIHE AND KANG QINGDE 1998Applied Mathematics(A Journal of Chinese Universities)1998,13,4:3
8Investigation on the extraction of strontium ions from aqueous phase using crown ether-ionic liquid systems显示文摘The extraction of strontium ions using DCH18C6 as the extractant and various ionic liquids(ILs) as solvents has been investigated.The distribution ratio of Sr2+ can reach as high as 103 under certain conditions,much larger than that in DCH18C6/n-octanol system.The extraction capacity depends greatly on the structure of ionic liquids.In Ils-based extraction systems,the extraction efficiency of strontium ions is reduced by increasing the concentration of nitric acid and can also be influenced directly by the presence of Na+ and K+ in the aqueous phase.It is confirmed that the extraction proceeds mainly via a cation-exchange mechanism.XU Chao SHEN XingHai CHEN QingDe GAO HongCheng 2009Science China Chemistry2009,52,11:3
9Alternation of Metal-Bridged Metallacycle Skeletons:From Ruthena- pentalyne to Ruthenapentalene and Ruthenaindene Derivative显示文摘The reaction of ruthenapentalyne with one equivalent of isocyanide led to the formation of a rare ruthenapentalene complex by nucleophilic addition.When excess isocyanides were used,the metal-bridged ruthenaindene derivatives can be isolated and were formed by one carbon of isocyanide insertion into the ruthenacycle.Complexes 3 represent the first metallaindene derivatives with a second-row transition metal at the bridge-head position.The transformations from ruthenapentalyne via ruthenapentalene to ruthenaindene derivatives are of interest and can be extended to the syntheses of other polycyclic ruthenacycles.These unique metallacycles exhibit considerable stability and broad spectral absorption spanning the visible spectrum,enabling their potential applications in photoelectric materials.Jinhua Li Huijun Kang Kaiyue Zhuo qingde Zhuo Hong Zhang Yu-Mei Lin Haiping Xia 2018Chinese Journal of Chemistry2018,36,12:3
10HMGB1 in health and disease显示文摘Rui Kang Ruochan Chen Qiuhong Zhang Wen Hou Sha Wu Lizhi Cao Jin Huang Yan Yu Xue-gong Fan Zhengwen Yan Xiaofang Sun Haichao Wang Qingde Wang Allan Tsung Timothy R. Billiar Herbert J. Zeh Michael T. Lotze Daolin Tang 2014Molecular Aspects of Medicine2014,,:2
11Intracellular Hmgb1 Inhibits Inflammatory Nucleosome Release and Limits Acute Pancreatitis in Mice显示文摘Rui Kang Qiuhong Zhang Wen Hou Zhenwen Yan Ruochan Chen Jillian Bonaroti Preeti Bansal Timothy R. Billiar Allan Tsung Qingde Wang David L. Bartlett David C. Whitcomb Eugene B. Chang Xiaorong Zhu Haichao Wang Ben Lu Kevin J. Tracey Lizhi Cao Xue-Gong Fan M 2013Gastroenterology2013,,:2
12K2,3+e-design of λKv显示文摘Tian Zihong Kang Qingde 2002Journal of Hebei Normal University2002,26,:2
13Optimization of microwave- assisted solvent extraction for volatile organic acids in tobacco and its comparison with conventional extraction methods 显示文摘Xiaolan Zhu Qingde Su Jibao Cal 2006Analytica chimiea acta2006,579,:1
14显示文摘Cuo Jiajia Su Qingde Gan Wuer 2009J Chin Chem Soc2009,56,4:1
15Size-dependent optical prop erties of nanocrystalline CeO2 : Er obtained by combustion syn thesis显示文摘Yu Xijuan Xie Pingbo Su Qingde 2001Physical Chemistry Chemical Physics2001,3,23:1
16Comparison of simul-taneous distillation extraction and solid - phase microextraction for the determination of volatile flavor components 显示文摘Cai Jibao Liu Baizhan Su Qingde 2001J Chromatogr A2001,930,:1
17Comparison of sinmhaneous distillation extraction and solid- phase microext reaction for the determination of volatile flavor components 显示文摘Jibao Cai Baizhan Liu Qingde Su 2001Journal of Chromatography A2001,930,:1
18Comparison of simultaneous distillation extraction and solidphase micro extraction for the detection of volatile flavor components 显示文摘Cai Jibao Liu Baizhan Su Qingde 2001J Chromat A2001,930,12:1
19Synthesis of Lanthanide β-Diketonates by Solid State Reaction at Low Heating Temperature显示文摘1IntroductionSincethe1950s,lanthanideβdiketonateshavebeenextensivelystudiedandwidelyapplied[1-3].Becauseofexcelentlaserprope...Lü Jingci (School of Chemistry and Chemical Engineering, Shanghai University) Yong Kelan (School of Life Sciences, Shanghai University) Chen Junsheng Liang Chongshan Su Qingde (China University of Science and Technology) 1999Advances in Manufacturing1999,,2:1
20Movement patterns of abrasive particles in three-body abrasion 显示文摘Liang Fang Xianglong Kong Junyi Su Qingde Zhou 1993Wear1993,,162164:1
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