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After the carboxymethylation,the solubility of pachyman in the water was significantly increased,its β-D-glucan characteristic absorption peak at 890 cm-1 became weak obviously,and its methylene vibration absorption peak and CO antisymmetrical stretch vibration absorption peak appeared at 1 333 and 1 606 cm-1 respectively,which indicated that the carboxymethylation succeeded.The analysis of AFM results showed that CMP molecules existed in different morphology under different solution conditions,and that the concentration,ionic strength and solvent physical chemistry characteristics of polysaccharide solution had effects on the CMP chains conformation and the action mode between different molecular chains.The phenomena were considered to be related to hydrogen bond association and intramolecular and intermolecular electrostatic interactions of CMP.

结果表明:经过羧甲基修饰,茯苓多糖在水中的溶解性显著增加,890 cm-1 处的β-D-葡聚糖特征吸收峰明显减弱,1 333 cm-1 处出现次甲基振动吸收峰,1 606 cm-1 处出现〖JG(〗C〖ZJLX,Y〗O〖JG)〗非对称伸缩振动吸收峰,表明羧甲基化成功;原子力显微镜分析表明:在不同溶液条件下,CMP分子以不同形态存在,多糖溶液的浓度、离子强度及溶剂的物化特性均能对CMP的分子链构象及链间相互作用形式产生影响,推测可能与CMP分子内、分子间的氢键缔合及静电作用有关,CMP分子与云母基底间的吸附及静电作用也会对CMP的分子链构象及图像质量产生影响。

The effect of zeolites ion-exchanged by transition metals on thermal catalytic cracking reaction is studied. The product distributions of the cracking reactions catalyzed by theβor ZSM-5 zeolites exchanged with transition metals are different from that catalyzed by corresponding Hzeolites, which means the mechanism of cracking reactions has varied. Group Ⅷ metals Fe, Co, Ni and Cu, Zn are shown to be of strong catalytic activity of oxidative dehydrogenation, while Ti and Cr are not of oxidative activity. Catalyzed by zeolites or catalyst containing Ag, conversion of thermal catalytic cracking reactions and the yield of ethylene increase while the yield of propylene does not decrease. Silver can not only promote the formation of carbonium ion, but also convert carbonium ion into free-radical via redox reaction. The weak adsorption of olefins on silver reduces the occurrence of hydrogen transfer and dehydrogenation. As a result, the yield of light olefins is favored by silver in the catalyst.

采用过渡金属交换的分子筛作为催化剂,进行催化热裂解制取乙烯的反应,研究发现,在β沸石分子筛和ZSM-5分子筛中引入过渡金属后,催化热裂解反应的产物分布与相应的氢型分子筛相比有了较大的变化,说明过渡金属的加入对于催化热裂解反应的机理具有影响,Ⅷ族金属如Fe、Co、Ni和第Ⅰ、Ⅱ副族Cu、Zn表现出较强的氧化脱氢活性,产物中氢气、焦炭的产率很高,Ti、Cr则未表现出氧化作用:分子筛及催化剂中引入银后,催化热裂解反应的转化率和乙烯的产率有了提高,丙烯产率没有很大的变化,说明银在催化热裂解反应中能够促进正碳离子的生成,又有可能通过氧化-还原作用部分改变反应机理,促进了自由基的生成,并且由于银对烯烃的吸附很弱,其氢转移反应和脱氢、加氢活性比较低,有利于烯烃产率的提高。

In these compounds thiourea、sodium thiocyanate storage tanks、propiolic alcohol and cetyl pyridinium bormide are selected as research objects.

通过吸附理论和电化学极化曲线研究它们在5%氢氟酸介质中对不锈钢的缓蚀作用,分析缓蚀作用的机理。

The catalytic performance of all the amorphous alloy catalysts mentioned above was measured during liquid phase hydrogenation of furfural to furfuryl alcohol, together with the kinetic studies. The relationship between the catalyst performance and the structure of catalyst, surface electronic state of the amorphous alloy has been systematically studied based on a series of characterization of catalysts . Meanwhile, the promoting effects of the support on the thermal stability and catalytic activity of the amorphous alloy catalysts have been discussed.

本文采用一系列的表征方法(XRD、XPS、TEM、BET、氢吸附、TPD等)进一步研究非晶态合金催化剂的表面结构、表面电子态和催化性能之间的关系,探索电子效应和几何效应对催化剂活性中心结构的影响,探索非晶态合金的晶化失活和载体对非晶态结构的稳定化作用,以及修饰剂对催化性能的改善作用等。

Further more researches indicate that it is just the bacteria adhereing that decrease surface free energy of pyrite and reduce the effect of catching pyrite by catching medicament. But the desulfurization is not the oxidation action of microbial or decreasing its hydrophile of pyrite.

而且发现正是由于T.f菌及其分泌物的吸附使黄铁矿的表面自由能减小,从而降低了捕收剂对黄铁矿的捕收效果,不是由于细菌氧化的作用或通过增加黄铁矿的亲水作用而脱除黄铁矿硫的。

Rotary coupon test has been used to study corrosion inhibition of PESA, it has been found that when PESA was used separately, it has some effect of preventing corrosion.

采用动态旋转挂片法研究了PESA的缓蚀性能,发现PESA单独使用时对碳钢即有较好缓蚀作用,其缓蚀作用的本质是在材质表面生成了吸附膜,具有最佳缓蚀效果的分子量范围在750-1000。

The results showed that the interactions between Al(superscript 3+), Fe(superscript 3+), polysilicic acid, the polynuclear hydroxy complexes of Al(superscript 3+), Fe(superscript 3+) and SO(superscript 2- subscript 4) had a compositive effect of electric neutralization, adsorption and bridge on the coagulating properties.

结果表明,含硅多核无机高分子絮凝剂的混凝作用是铁离子、铝离子、聚硅酸、铝铁离子的水解聚合物以及它们和硫酸根离子相互作用的产物对废水中胶体悬浮物颗粒的电中和、吸附架桥及粘附卷扫等综合作用的结果。

The results of research showed that compound ferrous flocculant has simple preparation and not any second pollution matter is produced to the environment, it has big and stout floes formation and fast speed sedimentation while dealing with waste water, it is positively charged according to the electrophoresis, it belongs to cationic flocculant, can gives better coagulation results in turbidity removal, color removal, the maximum removal rate of turbidity and color are 95.4% and more than 81.7%, respectively. There are interactions between polysilicic acid and hydrolyzed ferrous species, the compound ferrous with appropriate Si/Fe not only but also can lower the water treatment cost. The compound ferrous removes colloid particles in water by charge oxidation-reduction, neutralization and furl mechanism.

研究结果表明:复合亚铁制备工艺简便,无二次污染;处理水样时产生的矾花大,密实、沉降速度快;复合亚铁带电性为正,为阳离子型絮凝剂;复合亚铁具有较好的除浊、脱色能力,除浊率及脱色率最高分别可达95.4%及81.7%;在复合亚铁中,聚硅酸与亚铁的水解产物间存在着相互作用,合适的硅铁摩尔比有利于提高混凝效果,而且还可以降低投药成本;复合亚铁是通过氧化还原、吸附电中和及卷扫三种作用机理起混凝作用的。

In order to study degradation of potassic mineral by fungi, we isolated a thermophilic fungi strain TH003 from compost. The strain can use extract potassium from rocks as a nutrient. The strain was identified as Aspergillus fumigatus based on its morphological characteristics and molecular result.

为研究真菌对含钾矿物的吸附降解作用,作者从高温堆肥中分离选育出了一株丝状真菌TH003菌株,通过在含有矿物颗粒的改进PDA培养基中培养,使其在培养液中与矿物颗粒发生作用,再取样进行电镜观察和X-射线衍射分析以及电子探针观察。

Study on synthesis of phosphonic acid with thiadiazole and corrosion resistance on copper;2. Synthesis of N,N-dimethyl-1-aminomethane-1,1-di phosphonic acid N-oxide and researches on its corrosion and scale inhibition performances;3. Two phosphonic acid s: dodecylamine-N,N-dimethylene phosphonic acid and dodecyl phosphonic acid,were used to modify zirconia stationary phase in this paper.

通过红外、元素分析对2种不同类型的膦酸化合物改性氧化锆的改性条件和改性机理进行了研究,结果表明:十二烷基膦酸通过Lewis酸碱作用改性,室温浸泡即可达到满意的吸附量;而具有螯合结构的十二胺-N,N-二亚甲基膦酸与氧化锆结合时存在较强的络合作用,最佳改性条件为酸性条件下加热回流。

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