缩醛反应

反应萃取耦合法分离1,3-丙二醇中缩醛反应的研究

Acetal Reaction in Separation of 1,3-Propanediol by Coupling Method of Reaction-Extraction

固载杂多酸催化缩醛反应的研究

Study on the Acetal Reaction with Heterogeneous Supported Heteropoly Acid as Catalysts

固体超强酸催化剂SO4~（2-）/ZrO2在缩醛反应中的应用

Application of Solid Superacid Catalyst SO_4 ~ ( 2 - ) / ZrO_2 in Acetalization

布地奈德合成中缩醛反应的立体选择性

Stereoselectivity of Acetalization in Synthesis of Budesonide

铌酸催化缩醛反应

Niobic acid catalysis in Acetal reaction

研究了用反应萃取耦合法分离1,3-丙二醇过程中的关键反应-缩醛反应。

A synthetic process for hydroxylamine sulfate using reaction-extraction coupling technology Acetal reaction in separation of 1,3-propanediol ( PDO ) by coupling method of reaction-extraction was studied .

考察了光强、反应时间及反应器尺寸对微反应器中苯甲醛的光催化缩醛反应影响，结果表明微反应器中不仅发生苯甲醛缩醛反应，更容易发生苯甲醛的还原反应。

The effects of light intensity , reaction time and the size of photocatalytic reactor on benzaldehyde acetal reaction was investigated . The results showed that not only benzaldehyde acetal but reduction of benzaldehyde were produced .

本文研究聚合物载体催化剂水杨酸树脂&FeCl3催化剂对醇和羧酸的酯化反应，以及对醛（或酮）和醇的缩醛反应的催化作用。本催化剂具有操作方便。

This paper makes a study of polymer supported catalyst salicylic acid resin & FeCl_3 used in the esterification of carboxyl acid and alcohols and used in acetalizations ( ketal formations ) of aldehyde ( keton ) and alcohols .

由于缩醛化反应不能完全进行，PVB大分子链上含有一定量的羟基。

PVB molecular chain usually contains hydroxyl groups as a result of a not fully complete acetalization reaction .

AlPO4催化剂的制备和表征及其在缩醛化反应中的催化性能

Preparation and Characterization of AlPO_4 Catalyst and Its Application in Acetalization

以MCM-41负载磷钨酸作催化剂，对以苯乙醛和乙二醇为原料合成苯乙醛乙二醇缩醛的反应条件进行了研究。

Phenylacetaldehyde ethylene glycol acetal was synthesized with phenylacetaldehyde and ethylene glycol as raw materials in the presence of phosphotungstic acid supported on MCM-41 molecular sieve .

通过对VAC-BA-MMA共聚乳液进行缩醛化反应及氨基化处理，并加以填料，制得胶粘剂。

The adhesive is produced through acetalization and amination of VAc-BA-MMA copolymer emulsion , and the adding of fillers .

硫酸铝催化苯甲醛与1,2-丙二醇的缩醛化反应

Acetalization of benzaldehyde with 1,2-propanediol using aluminum sulfate as catalyst

甲基磺酸镧催化缩醛化反应性能的研究

Study on the Catalytic Activity of Lanthanum Methanesulfonate in Acetalization

证明甲基磺酸镧对缩醛化反应具有较高的催化活性。

It showed that lanthanum methanesulfonate has higher catalytic activity in acetalization reaction .

离子液体催化醛与二元醇的缩醛化反应

Acetalization of aldehydes with diols catalyzed by ionic liquids

硫代半缩醛的反应研究&1-苯甲酰基-1-甲硫基甲醇与脲的反应

Studies on the Reaction of Hemimonothioacetals ── The Reaction of 1-Benzoyl-1-methylthio-methanol and Ureas

苯甲醛与乙二醇缩醛化反应的研究

Study of Acetalation Reaction of Benzaldehyde with Glycol

聚苯乙烯－路易斯酸复合物催化下二茂铁甲醛与乙二醇的缩醛化反应

The Acetal Formation of Ferrocenyl Aldehyde With Ethylene Glycol Catalyzed by Polystyrene-Lewis Acid Complex

乙醛和丙二醇的缩醛化反应表明丙二醇的转化率主要受催化剂表面弱酸度的影响。

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

甲缩醛氧化反应过程分析

Methylal oxidation reaction process analysis

以浓硫酸改性煤基活性炭为催化剂，以苯甲醛和乙二醇为原料合成苯甲醛乙二醇缩醛的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 .

考察了树脂型固体酸催化剂对甲缩醛合成反应的催化性能，并与传统的硫酸催化剂进行了比较。

The catalysis of resinic solid acid catalysts in catalytic distillation is studied for synthesis of methylal from methanol and formaldehyde .

实验结果表明：以磷酸钙为主体的催化剂对缩醛裂解反应具有较高的活性和选择性。

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

在酸性催化剂下，由葡萄糖和乙二醇经缩醛化反应制备了乙二醇葡糖苷。脆弱类杆菌与大肠杆菌的β-葡萄糖醛酸酶活性的测定比较

Glycol glucoside was prepared from glucose and ethylene glycol in the presence of acid catalyst . Determination and Comparison of β & Glucuronidase Activity among Strains of B. fragilis and E. coli

将聚乙烯醇经缩醛化反应制备聚乙烯醇海绵，并引入甲壳素和壳聚糖制得复合海绵，考察甲壳素和壳聚糖的添加量对结构和性能的影响。

Polyvinyl alcohol sponge were prepared by the acetal reaction , and the introduction of chitin and chitosan to obtain a blend sponge system , study the impaction of the addition of chitin and chitosan on the structure and property .

报道了以SO2-4/TiO2-WO3为催化剂，对以苯甲醛和1,2-丙二醇为原料合成苯甲醛1,2-丙二醇缩醛的反应条件进行了研究。

Benzaldehyde 1 , 2-propanediol acetal was synthesized from benzaldehyde and 1,2-propanediol in the presence of SO ~ ( 2 - ) _4 / TiO_2-WO_3 . The factors influencing the synthesis were discussed and the best conditions were found out .

在超声场作用下，将接枝改性及缩醛化反应制备的油溶性纳米炭黑粒子（24nm~300nm）加入到普通油漆中，获得了纳米炭黑复合涂料。

In ultrasonic field , nanocomposite coating was got by adding oil-soluble carbon black nanoparticles synthesized by surface graft modification into paint . SPM image and TEM picture showed that the particle size was about 24 nm to 300 nm and dispersed uniformly in coatings .

其中，缩醛化反应所用催化剂有创新性。（2）用气相色谱对氟氯氰菊酯及关键中间体进行分析，简便可行、准确可靠，能满足产品的质量分析要求。

Particularly , the catalyst used in the acetal reaction is innovative method in our thesis . ( 2 ) Using gas chromatography , we analysis the Cyfluthrin and key intermediate . The method is simple and feasible , accurate and reliable and can meet the quality requirements analysis .

催化缩醛（酮）反应的研究进展

Advanced in Research of the Catalytic Condensation Reaction of Aldehyde Ketone