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碳酸二
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  dimethyl carbonate
     Photocatalytic Reaction for Synthesis of Dimethyl Carbonate from CO_2 and CH_3OH over Cu/NiO-MoO_3/SiO_2 Catalyst
     Cu/NiO-MoO_3/SiO_2光催化CO_2与CH_3OH合成碳酸二甲酯的反应性能
短句来源
     Preparation of Supported Sn_2(OMe)_4/SiO_2 Catalyst and Its Catalytic Behaviour for Direct Synthesis of Dimethyl Carbonate from CO_2 and CH_3OH
     负载型Sn_2(OMe)_4/SiO_2催化剂的制备及其催化CO_2与CH_3OH直接合成碳酸二甲酯的性能
短句来源
     Synthesis of Dimethyl Carbonate Catalyzed by K_2CO_3/CH_3I in Ionic Liquid
     离子液体中K_2CO_3/CH_3I直接催化合成碳酸二甲酯
短句来源
     Study on Photo-catalytic Synthesis of Dimethyl Carbonate from CO_2 and CH_3OH over Cu/NiO-V_2O_5/SiO_2 Catalyst
     Cu/NiO-V_2O_5/SiO_2催化剂光催化CO_2和甲醇合成碳酸二甲酯的研究
短句来源
     Preparation and Characterization of Supported Catalyst Sn_2(OMe)_2Cl_2/SiO_2 and Its Catalytic Properties for Synthesis of Dimethyl Carbonate
     负载型Sn_2(OMe)_2Cl_2/SiO_2催化剂的制备、表征与催化合成碳酸二甲酯
短句来源
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  “碳酸二”译为未确定词的双语例句
     Study on Cu-Ni/ZrO_2-SiO_2 Catalyst for Direct Synthesis of DMC from CO_2 and CH_3OH
     CO_2和CH_3OH直接合成碳酸二甲酯用Cu-Ni/ZrO_2-SiO_2催化剂
短句来源
     Preparation of Ni(OCH_3)_2/SiO_2 Catalyst and it's Reactivity for DMC Synthesis
     Ni(OCH_3)_2/SiO_2催化剂的制备及其合成碳酸二甲酯的反应性能
短句来源
     Under the condi- tion of normal pressure, space rate 300 h-1, 140 ℃ and 125 W UV irradiation, the conversion of CH3OH was up to 14.2% with the DMC selectivity of 89.9% over Cu/NiO-V2O5/SiO2 catalyst.
     用Cu/NiO-V2O5/SiO2催化剂,在常压、空速300h-1、140℃和125W紫外灯辐照的情况下,CH3OH的转化率为14.2%,碳酸二甲酯的选择性可达89.9%.
短句来源
     the mainly reaction products of the reaction of CO2 and CH3OH on Cu-Ni/VSiO catalyst are DMC (with selectivity over 85%), CH2O, CO and H2O.
     CO2 和CH3OH在Cu Ni/VSiO催化剂表面上的反应产物主要为碳酸二甲酯(DMC)、CH2O、CO和H2O ,其生成DMC的选择性在85%以上.
短句来源
     The Effect of PdCl_2-CuCl_2-KOAc/AC Catalysts Preparation on DMC Synthesis
     制备方法对合成碳酸二甲酯PdCl_2-CuCl_2-KOAc/AC催化剂性能的影响
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  相似匹配句对
     二.
     .
短句来源
     Two.
     .
短句来源
     Chemistry of Dimethyl Carbonate
     碳酸甲酯的化学
短句来源
     Production and Development of Dimethyl Carbonate
     碳酸甲酯的生产及开发
短句来源
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  dimethyl carbonate
Direct synthesis of dimethyl carbonate over rare earth oxide supported catalyst
      
Solid base catalysts for the direct synthesis of dimethyl carbonate (DMC) from carbon dioxide, methanol, and propylene oxide were prepared by loading KCl and K2CO3 on the surface of La2O3, Y2O3, CeO2 and Nd2O3.
      
Qualitative and Quantitative Determination of the Products Synthesized by the Transesterification of Dimethyl Carbonate with Phe
      
A gas chromatography-mass spectrometry assay method was developed for identification of the products synthesized by the transesterification of dimethyl carbonate with phenol.
      
Predication of atmospheric VLE for the ternary system Dimethyl Carbonate-Methanol-Furfural by using the Wilson equation
      
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The copolymerization of VDF-TFE was carried out in aqueous medium containing a fluorosurfactant and with diisopropylperoxydicarbonate (IPP) as initiator and acetone as chain transfer agent. A series of VDF-TBE copolymers of different compositions and different molecular weight ranges have been prepared.The VDF-TFE copolymer shows good mechanical properties and thermal stability. The pyroelectric coefficient of the copolymer attained a maximum value which corresponds to the minimum melting point of the copolymer,...

The copolymerization of VDF-TFE was carried out in aqueous medium containing a fluorosurfactant and with diisopropylperoxydicarbonate (IPP) as initiator and acetone as chain transfer agent. A series of VDF-TBE copolymers of different compositions and different molecular weight ranges have been prepared.The VDF-TFE copolymer shows good mechanical properties and thermal stability. The pyroelectric coefficient of the copolymer attained a maximum value which corresponds to the minimum melting point of the copolymer, at about 20mol% TFE content.

本文用过氧化二碳酸二异丙酯为引发剂,丙酮为分子量调节剂,对偏氟乙烯-四氟乙烯共聚反应进行了研究,并制得了不同组成,不同分子量的样品,用色谱分析方法分析在共聚反应过程中单体组成的变化,方便地确定了偏氟乙烯-四氟乙烯共聚反应中的“恒比”组成范围,并能控制共聚物组成的均匀性,丙酮有效地调节了共聚物的分子量,对共聚物的性能测定表明,它们有很好的机械性能和热稳定性,在“恒比”组成范围的共聚物的热电系数有一个极大值,它对应于熔点的极小值。

The kinetics of Bis (2-phenoxyethyl) Peroxydicarbonate (BPPD) decomposition in toluene, Chloroform-toluene and toluene containing styrene or vinyl acetate have been studied respectively. The rate constants of thermal, induced and apparant decomposition have been determined. A examination about initiator efficiency and activity in polymerization of styrene, and a explanation for the mechanism of BPPD decomposition were made.

本文就新型引发剂过氧化二碳酸二苯氧乙酯(BPPD)在甲苯、氯仿—甲苯以及含有苯乙烯或醋酸乙烯酯的甲苯溶液中的分解动力学进行了研究;分别测得一级分解速率常数、诱导分解速率常数和综合表观分解速率常数。此外,还探讨了BPPD引发笨乙烯聚合的活性和引发效率的问题,对BPPD的分解机理作了初步的解释。

Sulfhydryl group is modified either by P-chloromercuric benzoate or by dithiobis (2-nitrobenzoic acid). Amino group, phenolic hydroxyl group and imidazol group are modified by trinitrobenzene sulphonic acid, diazo-1-H-tetrazole and diethyl pyrocarbonate respectively. In certain range, the increase of light absorbance at specific wave length as well as the decrease of recombination activity of modified Mo-Fe protein are in accord with the enhancement of modification reagent amount used and the prolongation of...

Sulfhydryl group is modified either by P-chloromercuric benzoate or by dithiobis (2-nitrobenzoic acid). Amino group, phenolic hydroxyl group and imidazol group are modified by trinitrobenzene sulphonic acid, diazo-1-H-tetrazole and diethyl pyrocarbonate respectively. In certain range, the increase of light absorbance at specific wave length as well as the decrease of recombination activity of modified Mo-Fe protein are in accord with the enhancement of modification reagent amount used and the prolongation of modification duration, yet beyond that range, the absorbance and activity remain unchanged. Owing to the insufficiency of sodium dithionite in the anaerobic process of gel filtration for removing excessive reagent, even the activity of normal MoFe protein for recombination is lowered by 24.2%; as for the modified protein the range of decrease of recombination activity varies from 23.4% to 41.4%.

用对氯汞苯甲酸或二巯基双二硝基苯甲酸修饰巯基。用三硝基苯磺酸、重氮四唑和焦碳酸二乙酯分别修饰氨基、酚式羟基和眯唑基。在一定范围内,被修饰钼铁蛋白在特征波长吸收值的上升和重组活性的下降与修饰剂用量的增加和时间的延长相一致,超过该范围后则光吸收和活性都保持不变。由于无氧凝胶过滤去除多余的修饰剂时未加连二亚硫酸钠,甚至正常钼铁蛋白的重组活性下降了24.2%,修饰后的铝铁蛋白活性下降范围为23.4~41.4%不等。

 
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