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catalyze copolymerization
相关语句
  催化共聚反应
     The results showed that these catalysts could catalyze copolymerization effectively. The catalytic efficiency could reach over 6? 000 g/g when the catalyst content was 1.8×10~(-4),and the products were confirmed to be nearly alternative copolymers by FT-IR and(()~1H) NMR.
     结果表明,该催化剂能高效催化共聚反应,在催化剂含量为1.8×10-4时其催化效率可达6 000 g/g以上,FT-IR和1H NMR表征证实聚合产物为接近交替的共聚物.
短句来源
  “catalyze copolymerization”译为未确定词的双语例句
     In this article,Fe(acac)_3-Al(i-Bu)_3 was first used to catalyze copolymerization of maleic anhydride and isoprene.
     研究了双金属体系F e(acac)3-A l(i-Bu)3催化马来酸酐与异戊二烯的共聚反应。
短句来源
     The catalyst composed of rare earth phosphonate and triisobutylaluminum was used to catalyze copolymerization of CO 2 and epichlorohydrin(ECH)to synthesize polymer ECHCO 2.The effects of the different rare earth in catalyst on catalytic activity and molecular weight of copolymer were studied.
     利用稀土磷酸酯盐和三异丁基铝组成的催化剂催化二氧化碳和环氧氯丙烷 (ECH)共聚反应 ,合成出新型高分子材料脂肪族聚碳酸酯 (ECHCO2 )。 考察不同稀土元素对组成的催化剂活性和共聚物分子量的影响。
短句来源
     Since the 1950s, the copolymerization of maleic anhydride and olefins was studied, but most of studies were focused on the radical copolymerization. In recent years, metal catalysts were used to catalyze the coordination copolymerization of maleic anhydride and olefins. In this paper, Fe(acac) 3 Al( i Bu) 3 was first used to catalyze copolymerization of maleic anhydride and anethole.
     研究了Fe(acac) 3 Al(i Bu) 3 (acac =乙酰丙酮 )催化体系对马来酸酐 (MA)与茴香脑 (ANE)共聚反应的催化性能 .
短句来源
  相似匹配句对
     The results show that this catalyst has the function to catalyze the oligomerization and copolymerization in situ for ethylene .
     实验结果表明 ,Ni L-Ti Cl4 复合催化剂具有齐聚原位共聚特性 ,可催化乙烯原位聚合 ,合成支化聚乙烯 .
短句来源
     The Synthesis and Polyacrylamide by Copolymerization
     共聚合阳离子聚丙烯酰胺的合成及性能测试
短句来源
     Copolymerization of N-vinylformamide and Acrylonitrile
     N-乙烯基甲酰胺-丙烯腈共聚
短句来源
     It can also catalyze ethylene/1-hexene copolymerization and possesses good sensibility to hydrogen regulation.
     催化剂还具有良好的共聚能力及良好的氢调敏感性。
短句来源
     It can catalyze the oxidation of NADH.
     对烟酰胺腺嘌呤二核苷酸(NADH)的氧化有催化作用.
短句来源
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  catalyze copolymerization
These compounds are the first ruthenium complexes which catalyze copolymerization of ethylene and CO.
      


The catalyst composed of rare earth phosphonate and triisobutylaluminum was used to catalyze copolymerization of CO 2 and epichlorohydrin(ECH)to synthesize polymer ECHCO 2.The effects of the different rare earth in catalyst on catalytic activity and molecular weight of copolymer were studied.The reaction conditions such as dosages of catalyst,1,4 dioxane and water,solvent type,reaction temperature and time,adding method were also studied.

利用稀土磷酸酯盐和三异丁基铝组成的催化剂催化二氧化碳和环氧氯丙烷 (ECH)共聚反应 ,合成出新型高分子材料脂肪族聚碳酸酯 (ECHCO2 )。考察不同稀土元素对组成的催化剂活性和共聚物分子量的影响。同时还研究了催化剂用量、1 ,4 二氧六环的用量、溶剂种类、反应温度、反应时间、水量及加水方式等对该反应的影响。

Copolymers of maleic anhydride and other monomers can be used in many fields, such as detergent, coating, adhesive and medicine. Since the 1950s, the copolymerization of maleic anhydride and olefins was studied, but most of studies were focused on the radical copolymerization. In recent years, metal catalysts were used to catalyze the coordination copolymerization of maleic anhydride and olefins. In this paper, Fe(acac) 3 Al( i Bu) 3 was first used to catalyze copolymerization of maleic anhydride...

Copolymers of maleic anhydride and other monomers can be used in many fields, such as detergent, coating, adhesive and medicine. Since the 1950s, the copolymerization of maleic anhydride and olefins was studied, but most of studies were focused on the radical copolymerization. In recent years, metal catalysts were used to catalyze the coordination copolymerization of maleic anhydride and olefins. In this paper, Fe(acac) 3 Al( i Bu) 3 was first used to catalyze copolymerization of maleic anhydride and anethole. The reaction was carried out in benzene at 80℃ under nitrogen atmosphere. The best conditions are c (monomer) =2 8 mol/L , c (Fe) =17 mmol/L , n (Al) / n (Fe) =8, and t =6 h. The kinetic studies indicated that the reaction rate of copolymerization was first order with respect to monomer concentration. The apparent activation energy of the copolymerization is 31 0 kJ/mol . The copolymer was characterized by NMR, IR, GPC and DTA. The content of maleic anhydride in the copolymer is 45 6%. The molecular mass distribution of the copolymer is narrow. The decomposition temperature of copolymer is 501 ℃. Fe(acac) 3 Al( i Bu) 3 is an effective catalyst for the copolymerization of maleic anhydride and anethole.

研究了Fe(acac) 3 Al(i Bu) 3 (acac =乙酰丙酮 )催化体系对马来酸酐 (MA)与茴香脑 (ANE)共聚反应的催化性能 .动力学研究结果表明 ,MA与ANE共聚对单体的浓度呈一级反应 ,其表观活化能为 31 0kJ/mol.用IR和13 CNMR研究了共聚物的结构 ,结果表明聚合物是交替的 ,其中酸酐的含量为 4 5 6 % .用GPC测定了聚合物的分子量及其分布 ,结果表明分子量的分布较窄 ,PDI =1 19~ 1 4 2 .用DTA研究了聚合物的热力学性质 ,其分解温度为 5 0 1 1℃ .

In this article,Fe(acac)_3-Al(i-Bu)_3 was first used to catalyze copolymerization of maleic anhydride and isoprene.When the reaction was carried in V(T)/V(D)=2/5(T: dioxane;D: toluene) in 2 h under nitrogen atmosphere,the yield was(78.3%).The solvent experiments indicated that the copolymer didn′t solve in chloroform,acetone,THF and so on.When the copolymer was obtained in polar solvent such as dioxane,however,it could solve in THF slightly.The structure and composition of the copolymer were characterized...

In this article,Fe(acac)_3-Al(i-Bu)_3 was first used to catalyze copolymerization of maleic anhydride and isoprene.When the reaction was carried in V(T)/V(D)=2/5(T: dioxane;D: toluene) in 2 h under nitrogen atmosphere,the yield was(78.3%).The solvent experiments indicated that the copolymer didn′t solve in chloroform,acetone,THF and so on.When the copolymer was obtained in polar solvent such as dioxane,however,it could solve in THF slightly.The structure and composition of the copolymer were characterized by IR,NMR and elementary analysis.

研究了双金属体系F e(acac)3-A l(i-Bu)3催化马来酸酐与异戊二烯的共聚反应。结果表明,在甲苯/二氧六环=2/5的混合溶剂中反应2 h,共聚物的收率为78.3%,溶解性实验表明,共聚物不溶于氯仿、丙酮、四氢呋喃等溶剂,但在极性溶剂如二氧六环中共聚,得到微溶于四氢呋喃的共聚物。用红外光谱、核磁共振、元素分析测定了共聚物的结构及组成。

 
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