The performances of star-branched butyl polymer were analysed, in comparison with line-shaped butyl polymers. The mechanism was proposed.

  • 同时将星形支化聚合物及相应的线性聚合物进行了对比,并提出了支化剂DVB在星形支化丁基橡胶正离子反应过程中的反应机理。
  • 来源:互联网摘选更新时间:2026-07-12 21:27:13

  • 重点词汇
  • analysedv.分析,分解,解释( analyse的过去式和过去分词 );
  • were be的过去时复数和第二人称单数形式;有时代替 was,用于条件从句、动词 wish 之后等;
  • theart.这个;指已提到或易领会到的人或事物;指独一无二的、正常的或不言而喻的人或事物;用以泛指;与形容词连用,指事物或统称的人;用于姓氏的复数形式前,指家庭或夫妇;(指特定用途的事物)足够,恰好;每,一;当前的,本,此;(重读,表示所指的为知名或重要的人或事物)
  • ofprep. 关于;属于…的;由…制成;
  • in comparison with与…比较起来;
  • polymern.多聚物;[高分子] 聚合物;
  • performancesn.履行( performance的名词复数 );性能;表现;演出;
  • proposedadj.被提议的,所推荐的;
  • wasv. 用来表示某人或某物即主语本身,用来表示某人或某物属于某一群体或有某种性质( be的过去式 );在,存在;不受干扰;
  • 相关例句
1、

Meson Productions in Heavy Ion Reactions in CSR Energy Region

CSR能区重离子反应中的介子产生

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2、

The qualitative experiment indicates that it is still a spontaneous ionic reaction under water condition between acid gas and the components of carbonatite, this kind of environment can be fully provided by HEGF reservoir.

定性实验表明,酸气与地层碳酸盐成分之间仍然是在有水条件下的自发离子反应,高能气体压裂地层条件完全能够提供这样一个环境。

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3、

Quantum Chemical Study on the Transition State of the Reaction of Ethylene Oxide with Amino Anion

环氧乙烷与胺基负离子反应过渡态的量子化学研究

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4、

The new vibrating peak of-COO-was found by FTIR on modified HA surface. It indicate that Ca2+ from HA surface and CH3 ( CH2) 16COO-from SA to form ionic bond.

FTIR结果表明,改性后的HA表面出现了新的-COO-的振动峰,这说明SA与HA表面的钙离子反应形成了离子键。

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5、

A position-sensitive △ E-E telescope system for identifying products of nuclear reaction induted by heavy ions at low energies has been constructed.

叙述了所设计和制作的用于重离子反应产物鉴别的位置灵敏△E-E望远镜计数器系统。

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6、
7、

Spectrophotometric Investigation of the Reaction of Cupric Ions with PAN-S

PAN-S与铜离子反应的分光光度研究

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8、

Acceptance Potentials and Predominance Diagrams of Ionic Reaction in Agueous Solution

艺术鉴赏论。溶液中离子反应的接受势与优势图

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9、

An inorganic transitional membrane, which can get fastness load of y-Al2O3 washcoat, is produced by FeCrAl alloy substrate surface pretreatment.

本论文通过对FeCrAl合金金属载体的表面预处理方法进行研究,在FeCrAl合金表面获得了能与γ-Al2O3催化剂活性涂层良好结合的无机过渡膜。

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10、

Experimental results indicated that the catalytic activity was correlated closely with the acidity and the dimensional framework of the Bronsted acid site in catalysts.

结果表明:催化剂活性位的Bronsted酸强度和空间结构是影响催化剂活性和选择性的主要因素。

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11、

The activity evaluation results on high-pressure microreactor indicate that 2-octanone hydrogenating activity of fixed-bed Raney nickel catalyst is higher than that of the alumina-supported nickel catalysts.

催化剂活性的高压微反评价结果显示,固定床Raney镍催化剂的2辛酮加氢催化活性高于负载型镍催化剂。

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12、

We also consider the effect of the load of Cu on catalyst activity, and get when the ratio of Cu/ Ni is 31.59%, the catalyst is the most active, and determine the dynamic parameters of catalyst.

考察了铜负载量对催化剂活性的影响,当Cu/Ni为31.59%时,催化剂的活性最大,并且测定了催化剂的动力学参数。

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13、

The influence of additives La 2O 3, MgO on the Nickel dispersity of a steam-reforming catalyst was studied by means of hydrogen chemisorption on metallic surface.

用H2脉冲色谱测定金属表面积的方法,研究了添加剂La2O3、MgO的添加量对甲烷水蒸汽转化催化剂活性组分镍的分散度的影响。

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14、

The influence of the reaction conditions such as temperature, pressure and H2/ CO2 ratio on the catalytic properties were also well studied. XPS and FT-IR methods were used to characterize the catalyst.

讨论了反应温度、压力和H2/CO2比对催化剂活性和选择性的影响,并用XPS和FT-IR对催化剂进行了表征。

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15、

In this dissertation, the effect of promoters on the performance of Cu/ SiO2 catalyst and the preparation methods of supported copper catalyst were studied for the direct synthesis of indole.

主要研究了助剂对Cu/SiO2催化剂活性、选择性和稳定性的作用及Cu/SiO2催化剂制备方法的影响。

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16、

Under typical FCC operating conditions, the removal efficiency of SOx reaches 50% and has little effect on activity of the catalyst.

结果表明,LST1液体硫转移助剂在典型的催化裂化工艺条件下,SOx脱除率达50%左右,对催化剂活性基本没有影响。

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17、

Effects of crystal modifications of mgcl_2 on performance of supported catalyst for propylene polymerization

MgCl2晶型对丙烯聚合MgCl2载体催化剂活性的影响

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18、

The so called "synergistic effect" was caused by directional transfer of intermediate compounds from Y zeolite to H~ zeolite, resulting in enhanced activity and isomerization reaction simultaneously.

其中Y型分子筛和Hβ沸石之间具有仂、同作用,结果是催化剂活性和异构性能同时提高,原因可能是反应中间产物存在由HY向Hβ沸石的定向迁移现象。

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19、

The photocatalytic activity of the supported nanometer-sized TiO2 photocatalyst is significantly higher than that of TiO2 powder catalyst and decreased little after used for about 10 times.

该催化剂活性较高,明显优于粉体纳米TiO2光催化剂,重复使用10次左右,该催化剂的活性无明显下降。

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20、

The activity of the catalyst is discussed with respect to the hydrophobic property of the support by the NMR parameters of water adsorbed on the support.

用活性炭载体吸附水的NMR参数讨论了载体的亲水性和催化剂活性的关系。

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