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有机膦酸钡负载的新型固体强碱和超强碱

西南师范大学学报（自然科学版） 2004年第3期29卷 419-423页

作者：曾仁权傅相锴龚成斌隋岩杨新斌西南师范大学化学化工学院中国科学院大连化学物理研究所辽宁大连116023

首次以多乙烯多氨乙基膦酸为原料合成了多乙烯多氨乙基膦酸钡载体(Ⅰ).载体用5%NaOH处理后,用金属钠(钾)处理制得固体强碱(Ⅲ),用苯基钠处理制得固体超强碱(Ⅳ).用IR、碱强度对它们进行了表征,用指示剂法测得固体强碱强度H-为15 0～18 4... 详细信息

首次以多乙烯多氨乙基膦酸为原料合成了多乙烯多氨乙基膦酸钡载体(Ⅰ).载体用5%NaOH处理后,用金属钠(钾)处理制得固体强碱(Ⅲ),用苯基钠处理制得固体超强碱(Ⅳ).用IR、碱强度对它们进行了表征,用指示剂法测得固体强碱强度H-为15 0～18 4,超强碱强度H-为2. 0～3. 0.讨论了金属负载量对固体强碱量的影响,固体强碱催化苯甲醛和丙酮的羟醛缩合及醇与丙烯腈的氰乙基化反应,有较高的催化活性和较好的选择性,固体强碱催化剂可重复使用4～5次,且易于再生,是一种环境友好催化剂.

关键词：多乙烯多氨乙基膦酸钡载体固体强碱催化固体超强碱

Research on the Distribution of Major Metal Elements in the Typical Landslide Soil of the Three Gorges Reservoir Area

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Research on the Distribution of Major Metal Elements in the ...

2.11 World Congress on engineering and Technology(CET 2.11)

作者： Liu Luwen1 2.Xiang Wei2.Lin Zhaoxiang3.Liu Linmei3.Wu Jinquan3.1.School of Math and physics china University of Geosciences Wuhan 43.074 china 2.Faculty of {3. china University of Geosciences Wuhan 43.074 china 3.Lab.for Laser Spectrum Research South-Central University for Nationalities Wuhan 43.074 china

In this paper,a laboratory-built experimental system---Laser-induced Breakdown Spectroscopy（LIBS）,is used to measure soil *** explores landslides band soil of five typical landslides in Xiangxi River section of the Three Gorges Reservoir Area,which include Bazimen landslide,Baijaibao landslide,Jiajiadian landslide,Sixiangxi landslide and an unnamed landslide that has already *** samples of the five landslides are taken in different latitudes,and in relatively consistent *** experimental measurement,the author gets spectrum of those soil samples,and then dose qualitative and quantitative analyses of elements（Mg,Si,K,Al, etc）in *** author concludes that main metal elements in the soil are changed according to different longitudes and latitudes,which opens up a new way of thinking for the quantitative analysis of the function of soil and water,and for the establishment of relations between chemical environment factors and soil engineering mechanics effects.

关键词： LIBS landslides band soil elemental analysis

Stability On Crystalline LaNi5-xAlx And Phase Tramsformation Inducted By Heat Kinetic Energy

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Stability On Crystalline LaNi5-xAlx And Phase Tramsformation...

2.04全国荷电粒子源、粒子束学术会议

作者： Zheng Sixiao Fan Ying Liao Xiaodong Zhou De-hui Liu Zhongyang Tan Yun (Key Laboratory of Radiation physics and Technology of Education Ministry of china, {2. of Nuclear Science and Technology, Sichuan university, Chengdu 610064, china) 2. ({2. of structure Mechanics, china Academy of engineering physics, mianyang, 62.900, china)

Stability and phase transformation of crystalline LaNi5-xAlx at temperature range of 2.8 to 873.K had been studied By x-ray diffraction pattern. It was found thatCrystalline LaNis-xAlx is a stable of crystal phase having CaCus-type structure only at the temperature range 2.8 to 773.K, But it exhibits an amorphous structure characterized as the segregation of Fcc-Ni phase at a temperature of 873.K.

关键词： amorphous, phase tansformation, LaNis-xAlx,XRD pattern

微乳液增敏巯基葡聚糖凝胶分离富集邻氯苯基荧光酮光度法测定痕量镉的研究

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分析测试学报 2004年第3期23卷 5-8页

作者：魏琴寿崇琦李月云吴丹杜斌欧庆瑜中科院兰州化学物理研究所甘肃兰州730000 山东理工大学化学工程学院山东淄博255091 济南大学化学化工学院山东济南250022

研究了微乳液介质存在下 ,在pH=10.8硼砂 -NaOH的缓冲溶液中 ,镉与邻氯苯基荧光酮 (o_CPF)显色生成稳定的1∶3.合物 ,在600nm处摩尔吸光系数为1.1×105L·mol -1·cm -1 ,镉含量在0～0.8mg/L范围内符合比耳定律。采用巯基葡聚糖凝胶分... 详细信息

研究了微乳液介质存在下 ,在pH=10.8硼砂 -NaOH的缓冲溶液中 ,镉与邻氯苯基荧光酮 (o_CPF)显色生成稳定的1∶3.合物 ,在600nm处摩尔吸光系数为1.1×105L·mol -1·cm -1 ,镉含量在0～0.8mg/L范围内符合比耳定律。采用巯基葡聚糖凝胶分离富集 ,消除了共存离子的干扰 ,显著提高了方法的选择性和灵敏度 ,该方法成功地用于测定水样和发样中的痕量镉 ,结果的相对标准偏差均小于5.2.% ,回收率在92.%～105 %之间。

关键词：微乳液镉邻氯苯基荧光酮光度法巯基葡聚糖凝胶分离富集

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无线遥测电子吊秤的系统设计

西南师范大学学报（自然科学版） 2001年第6期26卷 678-683页

作者：张松涛李红中国工程物理研究院电子工程研究所四川绵阳621900 西南师范大学出版社重庆400715

介绍了利用单片微机对无线遥测电子吊秤中称质量传感器的微伏信号进行自动测量、信号编码、无线遥测发射接收、信号实时处理、显示、打印等处理方法 .采用无线传送称质量数据 ,使称质量物体操作更加简捷方便 ;在电路设计中 ,采用PPCM体... 详细信息

介绍了利用单片微机对无线遥测电子吊秤中称质量传感器的微伏信号进行自动测量、信号编码、无线遥测发射接收、信号实时处理、显示、打印等处理方法 .采用无线传送称质量数据 ,使称质量物体操作更加简捷方便 ;在电路设计中 ,采用PPCM体制 ,使发射、接收功率大为降低 ,耗电非常之小 ;采用二次编码、解码技术发送接收 ,抗干扰能力显著提高 ;并且硬件电路软件化 ,使硬件电路简单 ,性能价格比高 .

关键词：单片机数字滤波信号编码信号处理无线遥测电子吊秤系统设计

铜离子金属胶束介质中PNPA水解的动力学研究

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四川大学学报（自然科学版） 2003年第2期40卷 320-324页

作者：黄忠舒远杰曾宪诚楚士晋马召斌四川大学化学学院成都610064 中国工程物理研究院化工材料研究所四川绵阳621900

研究了 2.5℃时 ,铜离子与二胺类配体DMEA和DMPA(DMEA为N ,N 二甲基乙二胺 ,DMPA为N ,N 二甲基 1,3.丙二胺 )形成的配合物对PNPA(对硝基苯酚乙酸酯 )催化水解的动力学 ,并通过了胶束催化的二元复合物动力学模型对其进行定量处理 ,结果... 详细信息

研究了 2.5℃时 ,铜离子与二胺类配体DMEA和DMPA(DMEA为N ,N 二甲基乙二胺 ,DMPA为N ,N 二甲基 1,3.丙二胺 )形成的配合物对PNPA(对硝基苯酚乙酸酯 )催化水解的动力学 ,并通过了胶束催化的二元复合物动力学模型对其进行定量处理 ,结果表明 ,铜离子与不同的二胺类配体形成的配合物在CTAB胶束溶液中对PNPA的催化水解表现出不同的催化效果。

关键词：金属胶束催化 PNPA 水解反应动力学铜离子配合物二胺类配体对硝基苯酚乙酸酯

chemical bond properties and M（?）ssbauer spectroscopy in (La1-xMx)2.uO4（M=Ba,Sr）

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Rare Metals 2002年第4期 299-303页

作者： GAO Faming, LI Dongchun, XIE Dianyang, TIAN Yongjun, and ZHANG Siyuan College of Materials Science and chemical engineering, Yanshan University, Qinghuangdao 066004, {2. Laboratory of Rare Earth Chemistry and {3., Changchun institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 13.02., {2.

By using the average band-gap model, the chemical bond properties of (La1-xMx)2.uO4(M=Ba, Sr) were calcu-lated . The calculated covalencies for Cu-O and La-O bond in the compounds are 0.3.and 0.03.respectively. Mossbauerisomer shifts of 57Fe doped in La2.uO4 and 119Sn doped in La2.uO4 were calculated by using the chemical surroundingfactor defined by covalency and electronic polarizability. Four valence state tin and three valence iron sites were identifiedin 57Fe and 119Sn doped La2.uO4.

关键词： superconductor rare earth oxide chemical bond Mossbauer effect

Influence of nucleating agent on crystal structure of poly（butylene adipate）

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Influence of nucleating agent on crystal structure of poly（...

4th International Symposium on engineering Plastics

作者： Ni Jiang ~(1 2. Lin Li~3.Zhihua Gan~1 1 CAS Key Laboratory of engineering Plastics {2. of Chemistry Chinese Academy of Sciences Beijing 100190 china 2.Graduate University of Chinese Academy of Sciences Beijing 10003. china 3.State Key Laboratory of Polymer physics and Chemistry {2. of Chemistry Chinese Academy of Sciences Beijing 100190 china

＜正＞Polymorphism is a universal phenomenon for aliphatic *** can be formed through different preparations conditions,such as temperature,pressure,and *** poly（butylene adipate）（PBA）,two types polymorphic crystals（α-form andβ-form） have been identified and the monoclinicα-form crystals are thermodynamically stable ones while theβ-form crystals are metastable ones[1].On the other hand,

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A rapid method for the extraction and analysis of diterpenoid from Cephalotaxus fortunei cell suspension

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A rapid method for the extraction and analysis of diterpenoi...

第五届中美化学工程学术会议

作者： Xiaohui Xu~(1,2.,Wei Zhang~(1,3.,Xupeng Cao~1 1 Marine Bioproducts engineering Group,Dalian {2. of chemical {3.,Chinese Academy of Sciences,Dalian,china 2.Graduate University of Chinese Academy of Sciences,Beijing,china 3.Flinders Centre for Marine Bioprocessing and Bioproducts,Flinders University,Adelaide,Australia

＜正＞In this report,a simple extraction and analytical protocol was developed for diterpenoid produced by suspension cultured cells of Cephalotaxus fortunei *** *** process involves extraction by methanol followed by partitioning between 0.5%ammonium hydroxide and dichloromethane. After being concentrated to dryness,the dichloromethane fraction was resuspended in methanol and analyzed by high performance liquid chromatography with an ultraviolet detector at 2.0 nm.

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