The esterification and polymerizing reaction of rosin were studied. At first, by reacting of rosin and benzyl alcohol, rosin benzyl ester was prepared in the toluene with Lewis acid as catalyst.

  • 以Lewis酸为催化剂,甲苯为溶剂,进行松香与苯甲醇酯化反应合成松香苯甲酯,研究松香与苯甲醇的酯化和聚松香苯甲酯的合成反应。
  • 来源:互联网摘选更新时间:2026-07-13 08:13:12

  • 重点词汇
  • byprep. 在…旁边;表示方式;由于;经过;到…之前;
  • reactionn.反应(能力);不良反应;化学反应;抗拒,反对;
  • atprep. 在(某时间或时刻);在(学习或工作地点);在(某处);在…岁时;向;以,达;处于最佳(或最差等)状态;在…方面;以…的方式;从事于,忙于;因为,由于;应…(而)
  • firstn.第一,最初;头等;一号,;[乐]高音部;
  • benzyln.苯甲基(即苄基);
  • toluenen.甲苯(染料或火药的原料);
  • esterificationn.酯化作用;
  • 备好n.prepared; willing; prepared in advance;
  • 相关例句
1、

Moreover, while using these samples for the gas-phase oxidation of benzyl alcohol, the catalytic activity was also promoted evidently, and the samples could be still active after being kept for 10 days.

碱处理后的NPG样品对苯甲醇的气相催化反应也有很好的促进作用,而且样品经同样方法处理放置10天后依然可以保持很高的催化活性。

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2、

The results show that the appropriate conditions are: weight of catalyst, 0.5 g ( weight of benzyl alcohol, 0.1 mol); molar ratio of benzyl alcohol to acetic acid, 1 ∶ 5; reaction time, 2 h.

结果表明,醇酸摩尔比为1∶5,催化剂用量为0.5g(苯甲醇为0.1mol),反应时间为2.0h,是最适宜的反应条件,酯收率可达85%以上。

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3、

Catalytic oxidation of benzyl alcohol to benzyl aldehyde with Fe-HMS

铁改性HMS催化氧化苯甲醇合成苯甲醛

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4、

The properties of surface active agents of microemulsion system ( OP-4+ OP-7)/ benzylacohol/ D_2EHPA/ cyclohexane/ HCl between cyclohexane/ HCl aqueous solution interface

微乳液体系(OP-4+OP-7)/苯甲醇/D2EHPA/环己烷/HCl水溶液活性组分的界面性质

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5、

Study of microcosmic structure of mixed micelles in R_ ( 12)/ TAB/ benzyl alcohol/ water system

R(12)TAB/苯甲醇/水体系混合胶束的微观结构研究

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6、

Using non-alkoxide V_2O_5 as precursors, benzyl alcohol and iso-butanol as solvents, V_2O_5 thin films were prepared by the sol-gel technique.

以V2O5为原料,苯甲醇、异丁醇为溶剂,采用溶胶&凝胶(Sol-Gel)工艺制备了V2O5薄膜。

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7、

" good-bye," said peter to wendy; and he rose in the air, and the shameless jane rose with him; it was already her easiest way of moving about.

再见了。彼得对温迪说;他飞到了空中,不知羞的简,也随他飞起;飞行已经是她最容易的活动方式了。

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8、

shameless, the network's highest-rated comedy series, has received a 12-episode season 6, which will begin production later this year and air in early 2016.

《无耻之徒》是该台目前收视最高的喜剧,并且已经获得第六季12集续订。该季的制作工作会在2016年年初开始。

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9、

the camp attitude combines appreciation and condescension, celebrating the most overblown works of high culture and the most shameless products of mass culture alike.

坎普态度融合了欣赏与恩赐,既赞美最华而不实的高雅文化,也颂扬最伤风败俗的大众文化产品。

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10、

this may seem shameless self-promotion, but developerworks is a great resource for tutorials and articles about java language tools and techniques.

推销自己也许有些厚脸皮,但developerWorks是一项巨大的资源,收录了大量Java语言工具和技术的教程和文章。

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11、

some laughed at the shameless vulgarity. others felt it too outlandish to take seriously.

一些人对这不知羞耻的粗鄙行为示以嘲笑,其他人则觉得它过于奇怪而不必太当真。

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12、

the sun has been emitting energy at this speed for billions of years.

太阳以这样的强度辐射能量已经有10亿年之久了。

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13、

an auction is run every time a user searches-billions a day.

用户每搜索一次,拍卖就运行一次每天多达数十亿次。

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14、

who should manage buffett's billions? or china's?

应由谁来管理巴菲特抑或中国的亿万资金?

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15、

western diplomats say they run into many billions.

西方外交官表示这些财富的规模数以十亿计。

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16、

and that, my friends, is a lot of billions.

朋友们,这可是个天文数字。

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17、

finally, your detailed fact table will have billions of records.

最后,您的事实表将拥有数十亿条记录。

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18、

your brain is made up of billions of neurons connected together.

你的头脑由数十亿个神经元连结而成。

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19、

developing new vehicles can cost billions.

研发新车型的费用可以达到数十亿美元。

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20、

today, with mobile products there are billions of decision makers.

如今,移动产品存在着数十亿决策者。

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