活性碳纤维ZnO—SACF的制备及其对Ag^＋的氧化还原吸附

制备了含有ＺｎＯ的活性碳纤维ＺｎＯ－ＳＡＣＦ，借助ＡＡＳ，ＷＡＸＤ和ＳＥＭ探讨了ＺｎＯ－ＳＡＣＦ对Ａｇ＾＋的氧化还原吸附特性，并考察了ＺｎＯ在氧化还原中的作用。结果表明，ＺｎＯ－ＳＡＣＦ比ＳＡＣＦ具有对Ａｇ＾＋更高的氧化还原吸附量。外加ＺｎＯ的实验发现，ＺｎＯ本身并不吸附Ａｇ＾＋，但却参与氧化还原反应，中和氧化还原体系所释放出的Ｈ＾＋，提高了体系的ＰＨ值，可以认为，ＰＨ值的提高有利于ＳＡＣＦ电极电     

N—对甲苯磺酰基—α—氨基膦酸及其单酯的合成及活性研究

用＾３１Ｐ ＮＭＲ谱跟踪反应的方法，研究了对甲苯磺酰胺与取代苯甲醛及三氯化磷（或烷氧基二氯化磷）在乙酰氯为溶剂的条件下的类Ｍａｎｎｉｃｈ反应的机理，找到了合成标题化合物的简单方法。初步生物活性测试表明其中某些化合物具有较好的抗烟草花叶病毒活性。     

垃圾衍生燃料流化床燃烧过程中HCl和NOx的排放研究

在床总高为4040mm的变截面流化床中试规模装置内，研究垃圾衍生燃料(RDF)在气化和燃烧不同阶段中NOx和HCl的生成特性。含NaCl的垃圾衍生燃料在流化床内燃烧，燃烧低于640℃时，Ca(OH)2的脱氯效果比较好;但随着温度升高，烟气中HCl的体积分数迅速增长，但脱氯效果明显受到CaCl2化学反应平衡的限制。燃烧状况特别是氧的体积分数对NOx的生成影响比较大。含氮量高的RDF燃烧产生NOx的体积分数明显高于低含氮燃料所产生的。     

STUDIES ON REGULARITY OF POLY PHENYLSILSESQUIOXANE CHAINS

IR and ~(29)Si NMR were used to determine the structures of ladderlike polymer polyphenylsilsesquioxanes (PPS). It was found that PPS with lots of defects had a wide and strong absorption band in 1000—1400 cm~(-1) with only one sharp peak at 1137 cm~(-1) while two peaks (1130 and 1045 cm~(-1) were observed for PPS with perfect ladderlike structure. Branching and crosslinking of PPS lead to the reduction of 1045 cm~(-1) peak. ~(29)Si NMR spectra, however, showed two peaks (δ=-78 ppm and -87 ppm when δ_(HMDS)=0 ppm) for defective or branched PPS. The -87 ppm peak is related to the ladderlikely constructed Si atoms and -78 ppm corresponds to defective Si atoms. PPS with defects less than 0.1% chain units was obtained by azeotropic polycondensations.     

STUDY ON POLYMER-Ru-Co BIMETALLIC COMPLEXES CATALYSTS Ⅱ.X-RAY PHOTOELECTRON SPECTROSCOPIC ANALYSIS

Polymer Ru-Co bimetallic complexes have been examined by X-ray photoelectron spectroscopy.The catalyst is highly active only when the mole ratio of Co/Ru is 4: 3. The activity of catalysts does not depend on the total Co/Ru ratio, but on the surface stoichiometry of Co and Ru. When the relative intensities of Co_2_p and Ru_(3d) of XPS peaks are close to each other and both are high,the catalyst exhibits its maximum activity The mechanism ofcatalytic hydroformylation has been discussed.     

光导薄膜表面静电荷积累过程的动力学特征

本文对电照相用高分子光导材料薄膜涂层的表面电性能进行了研究,确定了表面充电过程宏观动力学的表征方法、动力学方程以及影响电荷沉积速度的因素。     

Synthesis and Crystal Structure of 7α-[（R）-1-Hy droxyl-1-methyl-3-（ thien-2-yl）-propyl]-6,14-endoethanotetrahydrothebaine

1 INTRODUCTION Opioid analogues still remain important drugs for the relief of severe pain and morphine is still the drug of choice in such situations. For many years, the search for new centrally acting opioid deriva- tives with pain-relieving properties and without un- desired side effects, such as addiction, obstipation, etc., has been the goal of a large number of scien- tists[1-3]. Consequently, a wide variety of modifyca- tions of the well-known alkaloids morphine, codeine and thebai…     

HCF(~1A'''')+SO_2反应的动力学研究

用激光光解-激光诱导荧光方法研究了室温下(T=293K)HCF(X%A′)自由基与SO2分子的反应动力学.实验中1HCF(X%A′)自由基是由213nm激光光解HCFBr2产生的,用激光诱导荧光(LIF)检测HCF(X%A′)自由基的相对浓度随着11反应时间的变化,得到此反应的二级反应速率常数为:k=(1.81±0.15)×10-12cm3?molecule-1?s-1,体系总压为1862Pa.高精度理论计算表明,HCF(X%A′)和SO2分子反应的机理是典型的加成-消除反应.我们运用RRKM-TST理论计算了1此二级反应速率常数的温度效应和压力效应,计算结果和室温下测定的二级反应速率常数符合得较好.     

Preparation of Co3O4 Nanofibers via an Electrospinning Technique

Thin PVA/cobalt acetate composite fibers were prepared by using sol-gel processing and electrospinning technique.After calcination of the above precursor fibers,Co3O4 nanofibers with a diameter of 50-150 nm could be successfully obtained.The fibers were characterized by SEM,FT-IR,WAXD,respectively.     

QuEChERS-气相色谱-串联质谱法测定枸杞中农药残留

建立了QuEChERS-气相色谱-串联质谱法测定枸杞中农药残留的分析方法。样品经乙腈提取，采用乙二胺-N-丙基硅烷（PSA）、C18和石墨化炭黑（GCB）3种吸附剂净化，在多反应监测模式（MRM）下进行检测，基质外标法定量。结果显示，检测项目在5~500 μg/L范围内呈良好线性（R²>0.99），在3个添加水平下测得回收率为71.5%~109.7%，相对标准偏差（RSD）为1.94%~9.87%（n=6）。该方法灵敏度高、净化效果好，可同时快速检测有机磷类、有机氯类农药。