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乙烯

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Synthesis of ethylene carbonate from ethylene oxide aqueous solution and carbon dioxide with NY-2 catalyst was studied.

采用自行开发的NY-2催化剂,研究了环氧乙烷水溶液和CO2制备碳酸乙烯酯的反应性能。

The effects of nitric oxide and ethylene on Vicia faba L. stomatal movement were studied.

以蚕豆为材料研究了一氧化氮(nitric oxide, NO)和乙烯对气孔运动的影响。

Nano Platinum black ethylene oxide catalysts reaction temperature from 600 ° C to room temperature.

纳米铂黑催化剂可使乙烯的氧化反应温度从600℃降至室温。

In 1997. Our company owns a fixed assets of 6 million RMB and a total area of 10,600 square meters. With powerful technical strength, it is the largest production base for r-chloropropyl, ethylene series silane coupler. And it is the member of China Organosilicon Association.

公司现有固定资产600多万元,占地面积10600平方米,科研技术力量雄厚,是全国较大的γ-氯丙基硅烷偶联剂、乙烯基硅烷偶联剂系列产品的生产基地,是中国有机硅协会认证的会员单位。

However, domestic applications are numerous, but the effect of the rural poor, and I RIPP, East China University of Science and Technology, Professor, etc. After years of research, currently has successfully developed a series of additives ethylene plant.

但国内应用虽多,但效果郊差,本人与石科院、华东理工大学等教授经过多年研究,目前已成功开发出了乙烯装置系列助剂。

A series homopolyme of ethylene synthesised by metallocene catalyst was analyzed by the high temperature gelatin permeation chromatography. The results showed that the molecular weight distribution changed not too much when the ratio of Al/Ti ranging between 1000 and 4000, while the molecular weight distributed increased from 2.48 to 2.81 when the ratio ranging between 4000 and 7000; catalyst D had the lowest activity to be used as asymmetric metallocene catalyst; the curve of molecular weight moved much to the left with the increases of temperature and two active centres appeared when the temperature is 70℃.

通过高温凝胶渗透色谱对茂金属催化合成的一系列乙烯均聚物进行了分析,可以看出Al/Ti比从1000变到4000时,分子量分布曲线图变化不大,而从4000变到7000时,变化相当大,分布宽度从2.48增至2.81;催化剂D的活性最小,可作为非对称性茂系金属催化剂;该聚合体系分子量的大小受聚合温度的影响很明显,随温度的升高,分子量分布曲线图向左发生很大位移,在聚合温度为70℃时存在两个活性相当的活性中心。

Held Tianjin ethylene, Shandong Lunan fertilizer plant researchers pressurized gasification and Phase II expansion project, Beijing Dongfang chemical acrylic acid and esters, Jinxi Chemical Plant ethylene propane series, 40 engineering and engineering technology to national, provincial and municipal incentives to the industry.

先后有天津乙烯、山东鲁南化肥厂水煤浆加压气化及二期扩建工程、北京东方化工厂丙烯酸及酯、锦西化工总厂环氧丙烷系列工程等40多项工程和技术获得国家、行业和省市级奖励。

This article investigates the selective hydrogenation of acetylene/ethylene mixtures over Pd-Ag series catalysts. The influence of important variable of hydrogen/acetylene ratio on the product yield pattern is discussed and cokes deposited on catalyst surface after reactions are analyzed.

本文以钯-银系列之触媒,进行乙炔/乙烯混合物之选择性氢化反应,除探讨氢气/乙炔之比例对於产物中乙烷及绿油组成分布之影响,同时说明触媒表面积碳之主要成份。

In this study we use the oligomers of amino ethylene series as matrix and introduce dithiocarbamate group to adsorb merely heavy metal ions. Because of its special structural characteristics , dithiocarbamate can combine with a great number of heavy metal ions to produce insoluble complex compound except for alkali metals and alkaline earth metals.

本研究系将氨基乙烯系列之寡聚物(oligomers of amino ethylene series)当做基质引入只对重金属离子具有特殊螯合能力之荒酸盐,除了与碱金属及碱土族外荒酸盐与其他重金属离子都能形成不溶性错合物。

The copolymerization compound comprises based on a proportioning ratio by weight: 25-99 percent ethylene aromatic series monomer; 0-30 percent olefinic undersaturation nitrile monomer; 1-50 percent olefinic dibasic acid ramification monomer.

这种共聚组合物按重量百分比包含:25至99%的乙烯基芳香族单体;0至30%的烯属不饱和腈类单体;1至50%的烯属二元酸衍生物单体。

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