• 本文研究对甲苯磺酸催化剂氯苯为溶剂,室温附近的条件下,苯酚对叔丁基酚与甲反应动力学

    With p-toluene sulfonic acid used as catalyst and chlorobenzene as organic solvent, the reaction kinetics between phenol and acetal have been studied at room temperature.

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  • 机理不同只有1,2加成方式聚乙烯醇饱和反应

    This mechanism is different from that for the acetalization reaction of polyvinyl alcohol with saturated aldehydes, which has only 1, 2 addition.

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  • TNBS之间反应支持酶分子的氨基,尤其是酶的氨基维护天然构象中起着特殊作用的观点。

    The reactions between aldolase and TNBS suggest that the amino group or groups, in snake aldolase, may play a special role in maintaining its native conformation.

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  • 本文研究磺酸化聚苯乙烯树脂酯化酯交换缩醛合成的合成(口)呐重排反应中的应用

    This paper reports the study on the sulfonated polystyrene resin used in esterification, transesterification, synthesis of acetals or ketals, synthesis of ether and rearrangement reaction of pinacol.

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  • 实验结果表明磷酸钙主体催化剂裂解反应具有较高的活性选择性

    The results showed that the catalyst, with calcium phosphate as the main part, is active and selective in the splitting of acetal.

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  • 通过一元羧酸乙烯反应,我们得到新颖缩醛结构分子玻璃

    A novel family of ester acetal molecular glass materials has been created by the reaction between monocarboxylic acid and divinyl ethers.

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  • 单质催化剂通过乙二醇反应合成了乙二醇

    Butyraldehyde glycol acetal was synthesized from butyraldehyde and glycol by using iodine as catalyst.

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  • 磷酸催化下,葡萄糖乙二醇反应制备了乙二醇葡糖苷,可用化妆品保湿剂。

    Ethylene glycol glycosides, useful as humectant in cosmetics, were prepared by phosphoric acid-catalyzed acetalization of glucose with ethylene glycol.

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  • 反应条件下乙二醇收率可达71.1%。

    Under these conditions, the yield of butyraldehyde glycol acetal is 71.1%.

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  • 酸性催化剂下,葡萄糖乙二醇缩醛反应制备了乙二醇葡糖苷

    Glycol glucoside was prepared from glucose and ethylene glycol in the presence of acid catalyst.

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  • 离子液体介质研究了三氯化铟催化缩醛反应

    Acetalization and ketalization reactions catalyzed by indium trichloride using various ionic liquids as media have been investigated in detail.

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  • 作者发现反应加入适量代替部分、可明显提高缩醛性能

    The authors find that the addition of appropriate amount of acetaldehyde to replace a part of formaldehyde distinctly improves the properties of the acetal adhesive.

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  • 各种芳香二酸各种二乙烯基化合物有机溶剂存在下加热反应得到新型缩醛聚合物

    Various aromatic diacids and various divinyl ether compounds are heated to react in organic solvent to obtain novel ester acetal polymers.

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  • 研究酸性阳离子交换树脂合成反应催化作用,系统地探讨了各反应因素反应影响,研究发现,D- 72强酸性阳离子交换树脂具有较高的催化活性,并能重复使用。

    This paper investigates the catalysis of D-72 strong acid cation exchange resin on the synthesis of acetals, and systematically discusses the influence of reaction factors on the catalysis reaction.

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  • 单质为催化剂,通过丁1,2丙二醇反应合成了丁1,2丙二醇

    The butyraldehyde 1, 2-propanediol acetal is synthesized from the acetalization reaction of butyraldehyde and 1, 2-propanediol, and used iodine as catalysis.

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  • 缩醛反应表明丙二醇的转化率主要催化剂表面酸度影响。

    The conversion of propylene glycol was mainly affected by the surface acidity of the catalyst.

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  • 浓硫酸改性活性炭催化剂,以苯乙二醇为原料合成苯甲乙二醇反应条件进行了研究。

    Using concentrated H_2SO_4 modified coal based activated carbon as catalyst, benzylaldehyde glycol acetal was synthesized from benzylaldehyde and glycol.

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  • 浓硫酸改性活性炭催化剂,以苯乙二醇为原料合成苯甲乙二醇反应条件进行了研究。

    Using concentrated H_2SO_4 modified coal based activated carbon as catalyst, benzylaldehyde glycol acetal was synthesized from benzylaldehyde and glycol.

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