脱水环化

脱水环化脱水环化
  1. 脱水环化:乙酸酐,回流,2h,97%。

    Cyclization : acetic anhydride , reflux , 2 h , 97 % .

  2. 考察了无机酸对二甘醇(DEG)脱水环化制备1,4-二氧六环(DOX)反应的催化效果。

    The catalytic performance of mineral acids for the synthesis of 1 , 4-dioxane by cyclodehydration of DEG was studied .

  3. 研究了H2SO4催化一缩二乙二醇(二甘醇)脱水环化生成1,4-二氧六环液相反应的速率与温度、H2SO4浓度的关系。

    A method and apparatus for studying the kinetics of liquid phase dehydration reaction of diethylene glycol forming 1,4-dioxane are presented , The relationships between the dehydration rate and the reaction temperature and concentration of H_2SO_4 catalyst have been investigated .

  4. 酸催化二甘醇脱水环化反应研究

    Study on Dehydration Reaction of DEG over Acid Catalysts

  5. 1,4-丁二醇气相脱水环化制四氢呋喃催化剂和工艺的研究

    Study on Catalyst and Process Conditions of 1,4-Butanediol Dehydration for Producing Tetrahydrofuran-Gas Phase Method

  6. 1,4-丁二醇液相脱水环化制四氢呋喃

    1,4-Butanediol Liquid Phase Dehydration for Producing Tetrahydrofuran

  7. 衣康酸酐是一种可由微生物发酵提取,并经过脱水环化制得的一种新型无毒可再生化工原料。

    As a kind of nontoxic and recyclable chemical material , itaconic anhydride can be manufactured by the process consists of bio-fermentation and cyclodehydration .

  8. 以大孔阳离子交换树脂为催化剂,在150°~170℃,200~760mmHg柱压力下,使二甘醇脱水环化,制取1,4&二恶烷。

    1,4-Dioxane was prepared by dehydration and cyclization of diethylene glycol at 150 - 170 ℃ and 200-760 mmHg in the presence of macroreticular cation exchange resins as catalysts .