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The quantity of catalyst was equal to 0.6% of feedstocks,the reaction temperature was 78～110 ℃,and the reaction time was 45 min. The test results have shown that H_4SiW_(12-O_(40)/MCM-48 is an excellent catalyst for synthesizing butanone 1,2-propanediol ketal with its yield reaching over 91.9%.
实验表明：H4SiW12O40/MCM-48是合成丁酮-1，2-丙二醇缩酮的良好催化剂，在n∶n(1，2-丙二醇)=1∶1.6，催化剂用量为反应物料总质量的0.6%，环己烷为带水剂，反应时间45 min的优化条件下，丁酮-1，2-丙二醇缩酮的收率可达91.9%。
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In this paper,the ketalization of cyclohexanone and ethylene glycol catalyzed by dealuminated USY was studied.
研究了脱铝超稳Y沸石催化环己酮与乙二醇的缩酮化反应，考察了催化剂硅铝比、催化剂用量、反应物配比、带水剂和反应时间等对缩酮化反应的影响。
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The acid property of zirconium oxychloride was characterized by means of DTA and FT-IR spectra of pyridine absorbed on the surface.
采用DTA和吸附吡啶的FT-IR表征氯氧化锆的表面酸性，用Hamm ett指示剂测定其酸强度，以催化合成环己酮2，3-丁二醇缩酮为探针反应优化缩酮反应条件，并考察它对其他缩酮反应的催化活性，比较了不同催化剂对缩酮活性的影响。
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The optimum conditions are: molar ratio of glycol to cyclohexanone is 1.6:1, the quantity of catalyst is equal to 0.25% of feed stocks, and the reaction time is 40 mm. H3PW12O40/MCM-48 is an excellent catalyst for synthesizing cyclohexanone ethylene ketal and its yield can reach over 80.63%.
实验表明：H3PW12O40/MCM-48是合成环己酮乙二醇缩酮的良好催化剂，在n：n＝1：1.6，催化剂用量为反应物料总质量的0.25%，环己烷为带水剂，反应时间40min的优化条件下，环己酮乙二醇缩酮的收率可达80.63%。
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The ketalization of cyclohexanone and 1,4-butanediol catalyzed by the Hβ zeolite was studied.Effects of reaction time,mole ratio of reactants and amount of catalyst on the yield of ketal were studied.Results showed that the Hβ zeolite was an efficient catalyst for the synthesis of ketal.
研究了Hβ分子筛催化1，4-丁二醇与环己酮的缩合生成新型七元环缩酮的反应，考察了反应时间、酮与醇的配比、催化剂用量、催化剂重复使用等因素对醛与醇缩合反应的影响。
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The quantity of catalyst was equal to 0.6% of feedstocks,the reaction temperature was 78～110 ℃,and the reaction time was 45 min. The test results have shown thatH_4SiW_(12-O_(40)/MCM-48 is an excellent catalyst for synthesizing butanone 1,2-propanediol ketal with its yield reaching over 91.9%.
实验表明：H4SiW12O40/MCM-48是合成丁酮-1，2-丙二醇缩酮的良好催化剂，在n∶n(1，2-丙二醇)=1∶1.6，催化剂用量为反应物料总质量的0.6%，环己烷为带水剂，反应时间45 min的优化条件下，丁酮-1，2-丙二醇缩酮的收率可达91.9%。
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Condensation of cyclohexanone and pentaerythritol catalyzed by iodine supported on activated carbon was investigated.
为了研究活性炭负载单质碘催化合成季戊四醇双缩酮催化活性，以季戊四醇和环己酮为原料，合成环己酮季戊四醇双缩酮。
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The results showed that the suitable condition for the reaction are as follows: benzaldehyde/1, 2-propylene molar ratio is 1:1.4, the mount of potassium dodecatungstocobaltate trihydrate (K5CoW12O403H2O) is 0.5g, the volume of cyclohexane is 9 mL, and reaction time is 70 min.
实验结果表明，杂多化合物K5CoW12O403H2O是合成环己酮l， 2-丙二醇缩酮的良好催化剂，在酮醇物质的量比为l：1.4、催化剂质量为0.5g、带水剂环己烷体积为9mL、反应时间为70min的最佳条件下，环己酮l， 2-丙二醇缩酮的收率最高可达94.2%。
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The o-aminobenzaldehyde ethylene acetals can be synthesized from corresponding o-nitrobenzaldehyde by reducing the nitro-group after the protection of carbonyl by ethylene. 2-Aminophenyl ketone ethylene ketal can also be prepared from 2-nitrophenyl ketones by this method.
邻氨基苯甲醛乙二醇缩醛可以由含不同取代基的邻硝基苯甲醛经羰基以乙二醇缩醛保护后还原硝基得到，邻氨基芳香酮乙二醇缩酮可以同样的方法由邻硝基芳香酮得到。
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Sythesis and application of chlorostyrene-DVB strongly acidic cation exchange resin ;2. For this study,a series of poly( p -amino styrenes) with various amounts of supported hydrogen chloride,and a series of strongly acidic cation exchange resin s with various exchange capacity were synthesized,and their catalytic property for ketalization of cyclohexanone and glycol were investigated.
通过测定固载了不同量的氯化氢的聚和不同交换量的强酸性阳离子交换树脂催化的环己酮与乙二醇的缩酮化反应缩酮的收率，研究了聚合物固体酸催化剂的疏水性对其催化缩酮化反应性能的影响；发现在一定范围内增加催化剂的疏水性，可提高缩酮化反应的收率。
- 更多网络解释与缩酮相关的网络解释 [注：此内容来源于网络，仅供参考]
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acyloin condensation：醇酮缩合
"acyloin","醯偶姻" | "acyloin condensation","醇酮缩合" | "acyloin rearrangement","醇酮重排"
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ketene acetal：乙烯酮缩二乙醇
ketamine intravenous anesthesia 氯胺酮静脉麻醉 | ketene acetal 乙烯酮缩二乙醇=>ケテンアセタール | ketene acetylation 乙烯酮法乙酰化
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ketal：缩酮
水型油墨中加入可水解的挥发性缩酮(Ketal)也可防止油墨酸败. 例如2,2-二甲氧基丙(或丁)烷,2,2-二乙氧基丙(或丁)烷等. 在酸存在下,缩酮是极易水解的. 每克分子缩酮水解后可产生一克分子酮和两克分子醇.
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ketal：酮缩醇 缩酮
cross pusher (炉用)横向出钢机 | ketal 酮缩醇 缩酮 | prepared chalk 研细白垩 沉降白垩 精制粉笔
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ketal：酮缩醇
-itol糖醇 | -ketal 酮缩醇 | -ketene 乙烯酮
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ketal：缩酮 酮缩醇
keta 大麻哈鱼 | ketal 缩酮 酮缩醇 | ketalformation 酮缩醇的形成
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ketal; ketone acetal：缩酮
"Kessler concentration plant","克士勒浓缩装置" | "ketal; ketone acetal","缩酮" | "ketene; olefin ketone; olefinic ketone","烯酮"
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vinyl ketal polymer：乙烯缩酮聚合物
vinyl isovalerate 异戊酸烯酯 | vinyl ketal polymer 乙烯缩酮聚合物 | vinyl ketone polymer 乙烯酮聚合物
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MENTHONE GLYCERIN ACETAL：薄荷酮甘油缩酮
MENTHOL 薄荷醇 | MENTHONE GLYCERIN ACETAL 薄荷酮甘油缩酮 | MENTHOXYPROPANEDIOL 薄荷氧基丙二醇
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ketone thioacetal：缩硫酮
ketonic decomposition 酮分解 | ketone thioacetal 缩硫酮 | ketone resin 酮树脂