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A gas chromatographic analysis method was established in the study of the conversion of acrolein to 1,3-propanediol by hydration and hydrogenation.

建立丙烯醛水合加氢制1,3-丙二醇的气相色谱定性定量分析方法。

The results show that the energy barrier with the two watermolecules reaction drops about 25% compared with that of onewater molecule reaction.

冰表面对〓反应的催化作用对〓与一水和二水的反应进行了计算,优化出了络合态及过渡态。

The results indicate that SPE has high activity and good selectivity of EG in hydration reaction of EO .

结果表明,磺化石油焦活性炭对环氧乙烷水合反应有很高的活性和乙二醇选择性。

According to testing results, the stress-strain curve of the cemented soil stabilized the nanometer silica fume is fitted using a quadratic parabolic curve and expression equation for upward sector of the stress-strain curve is given.

根据试验结果,分析了纳米硅粉水泥土的变形特性,并对其应力应变曲线进行了二次抛物线拟合分析,推导了曲线上升段的表达式。

The exchange mechanism of hydrated antirnony pentoxide and the reation betwee preparation condition and exchange capadty are studied.

结果表明,水合五氧化二锑对3种离子的交换过程不是理想的离子交换,还存在吸附等过程

Various synthetic method of 1,3-propanediol were introduced and compared, including hydration and hydrogenation of acrylaldehyde, carbonylation of epoxy ethane , microbiological fementation, the process starting from methyl aldehyde, etc.

介绍了1,3-丙二醇的几种制备方法,即丙烯醛水合-氢化法、环氧乙烷羰基化法、微生物发酵法和以甲醛等为原料的方法。

With Glycol as solvent and Aquation Hydrazine as reducing agent,Low Cobalt powder can be prepared from Cobalt Chloride.

以乙二醇做溶剂,水合肼做还原剂,从钴的氯化物中制备金属钴粉。

The possibility of using hydrazine hydrate and carbohydrazide to control emissions of dioxins from flue gases and incineration fly ash has been discussed in this paper,and the mechanisms have been analyzed.

探讨了肼类物质水合肼和碳酰肼抑制烟气和飞灰中二恶英向环境排放的机理和应用可能性。

The results of this study are summarized below.1 A variety of additives such as proteins,glyoxal / glycerol,alcohols,metal salts,as well as ethylene monomer were used in this study and all of them could improve the leaching resistance of the three kinds of borate(boric acid,borax,disodium octaborate tetrahydrate) in different extents through variety forms.

本研究的结果归纳如下:(1)本研究中所使用的多种助剂如蛋白质、乙二醛/丙三醇、醇类化合物、金属盐以及乙烯单体等都能通过各种形式,不同程度的提高三种硼酸盐(硼酸、硼砂、四水合八硼酸二钠)的抗流失性,但效果均不是特别明显。

According to Johnson's Rule and IR spectra, their possible structures are suggested. The bonding parameters of those complexes are calculated by ESR parameters. And the crystal field parameters are calculated by using electronic spectral data. It can be seen that the vanadyl complexes in the solution are ionic complexes and that the α〓 values of those complexes decrease following the increasing of the N donor replacing the O donor of water on the equatorial plane in those complexes. This means that the covalent bonding between vanadium and ligand increases as Ser, Phen or Bipy replace water ligands. The results show the competitive coordinate law that the coordination reactivity of Phen and Bipy is much stronger than that of Ser. The simulation program of ESR is compiled by the theory of ESR in the present work.

测定了VO-丝氨酸二元体系、VO-丝氨酸-邻菲咯啉三元体系和VO-丝氨酸联吡啶三元体系在不同酸度下(pH=1.0~14.0)的乙二醇/水(V/V=1:1)溶液低温ESR谱,发现不同pH下,溶液中具有不同组成的配合物,根据不同pH下ESR谱的变化,利用Johnson的加合规则并结合红外光谱,推测了它们在溶液中的可能结构;利用波谱参数计算了配合物键参数;利用电子光谱数据计算了配合物的晶体场参数,讨沦了它们的成配特性,结果表明:VO配合物属离子型配合物,随取代水分子的配体(Ser、Phen或Bipy)数目增加,键参数减小,配合物共价性增强,同时得出这些体系中,生物配体竞争配位规律:Phen和Bipy与VO的配位能力比Ser强。

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