1、

The aromatic oligomers coupling with methylene bridge, principally di, tri and tetramers, were synthesized from 1,2,4,5 tetramethylbenzene by a protonic acid as the catalyst and with trioxymethylene as the cross linking agent.

以均四甲苯为原料,三聚甲醛为交联剂,在质子酸催化作用下合成以亚甲基桥连接的齐聚芳烃化合物,在本工艺条件下主要形成二、三、四聚体。

互联网摘选

2、

The polyaniline was synthesized by the microemulsion method with ammonium persulfate ( APS) as an oxidant in functional protonic acid-water-n-butyl alcohol systems.

用(NH4)2S2O8为氧化剂,在功能质子酸水正丁醇三元体系中,用微乳液法合成了聚苯胺。

互联网摘选

3、

Up to now, the methods for preparing aromatic ketones still involve homogeneous metal chlorides or protonic acid used as catalysts in batch reactors via Friedel-Crafts acylation in industry.

目前,工业上通过Friedel-Crafts酰基化反应制备芳酮类化合物的工艺仍然是以均相的金属氯化物或质子酸等为催化剂,采用釜式反应器。

互联网摘选

  • 今日热词
  • 热门搜索

英语网英语词典(dict.25820.com)为您提供在线翻译英语词典单词大全英译汉汉译英等英语服务!可按单词字数词义分类查询。支持lj:关键词格式查询例句。

用户反馈
请选择反馈类型(可多选):
您的联系方式:
反馈内容:
提交成功 小编会尽快处理
回到顶部
点击反馈