- 更多网络例句与醋酐相关的网络例句 [注：此内容来源于网络，仅供参考]
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This paper summarized preparation technology and the production application at home and abroad for acetic anhydride ,and suggestions of production and development for acetic anhydride in our country was put forward.
综述了醋酐的生产技术及国内外的生产应用状况，并对国内外醋酐的生产发展提出建议。
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Translate methanol and carbon monoxide for acetic anhydride and acetic acid was important for chemical energy industrial of northern Shaanxi.
同时对加强醋酐的市场开拓、提高我国醋酐工业的整体水平有重大经济意义。
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Sulfur method replaced by acetic anhydride method for chloroacetic production is the trends in domestic.
指出在国内用醋酐法代替硫磺法生产氯乙酸的必然趋势。
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This article describes the production status, and discusses the strongpoint and shortcoming of using differente catalyst, sulfur and acetic anhydride .
对比两种催化剂的实际生产情况，阐述用硫磺以及用醋酐的优缺点。
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The seven units at the complex include capacity for acetic acid, vinyl acetate monomer, acetic anhydride, vinyl acetate emulsions, Celstran long fiber-reinforced thermoplastic, GUR ultra-high molecular weight polyethylene and a polymer compounding unit.
基地包括醋酸、醋酸乙烯单体、醋酐、醋酸乙烯-乙烯共聚乳液、超高分子量聚乙烯和长纤增强热塑性塑料的生产装置以及特种功能高技术复合材料装置。
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Macerate 1.0g of the powdered sample with 20.0 ml of chloroform plus 0.3ml of 25％ NH_4 OH in a glassstoppered flask overnight.
本文报道用不含粘合剂的氧化铝薄层，以二甲苯-丙酮-无水乙醇-二乙胺(50：40：10：0.6)为展开剂分离茄科植物中的莨菪碱、东莨菪碱、山莨菪碱、樟柳碱及红古豆碱等五种莨菪烷生物碱，用改良Dragendorff试剂-Wagner试剂(1：1)显色，定量收集莨菪碱、东莨菪碱及山莨菪碱的斑点，莨菪碱和东莨菪碱用氨甲醇洗脱，蒸干洗脱液后分别用pH 5.6及pH 4.5的溴甲酚绿溶液作比色测定；山莨菪碱用4％醋酐氯仿洗脱，蒸干洗脱液后用pH 5.6的溴甲酚绿溶液作比色测定。
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The ammonia was evaporated under decreasing pressure, and the precipitate was filtered off and the liquid was poured into hot saturated picric acid solution to get picrate with a yield of 85.0%. The optimum process starting from imidazole-4,5-dicarboxylic acid was: imidazole-4,5-dicarboxylic acid in acetic anhydride was refluxed to get imidazole-4-carboxylic acid, and the product was esterification in ethanol with a catalyzer of concentrated sulfuric acid to get ethyl imidazole-4-carboxylate, at last the compound above was reduced by LiAlH4 in ether at room temperature to get the target compound, the total yield of this route was 49.6%.
以4，5-二羧酸咪唑为原料的较佳工艺：1 脱羧反应：4，5-二羧酸咪唑40g，醋酐1200ml，回流10h，过滤并将滤液浓缩至干，所得固体加至50%的乙醇溶液回流，过滤并将滤液自然冷却过夜，过滤得固体；2 酯化反应：4(5)-羧酸咪唑50g，乙醇1000ml和浓硫酸60ml，加热回流2h，5%浓度NaOH溶液调节至pH＝8，减压浓缩至干，加入少量水回流，自然冷却过夜并过滤得固体；3 还原反应：LiAlH410g，乙醚300ml和4(5)-羧酸咪唑乙酯28g，常温反应1.5h，小心滴加25ml水后过滤，滤渣溶于300ml甲醇中并过滤，收集所得乙醚和甲醇滤液浓缩至干，将所得固体溶于300ml乙醇中加热回流，后将溶液浓缩至约30ml，冷却并过滤得固体，该路线总收率为49.6%。
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Amino to acetyl phenol, in have technology of two kinds of production domestic and internationally, acetic anhydride craft of the United States, acyl changes temperature to have 75 ℃ only, acyl changes mother liquor not apply mechanically, deputy reaction is little, of production thick tasting is kind of white almost, purificatory craft is very simple, activated carbon dosage only 2~3%, the Kun that its product does not have glow material almost in different third alcohol inferior the sealed impurity of amine impurity and minim, settleclear lightness it may not be a bad idea, the product quality that acetic anhydride craft produces is good, but close rate low, cost is high.
对乙酰氨基酚，在国内外有两种生产工艺，美国的醋酐工艺，酰化温度只有75℃，酰化母液不套用，副反应少，生产的粗品几乎是类白色，精制工艺就非常简单，活性炭用量仅2~3%，其产品在异丙醇中几乎无红光物质的醌亚胺杂质及微量的未知杂质，澄明度也好，醋酐工艺生产的产品质量好，但收率低、成本高。
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Based on the problem of various types of catalyst and according to the features of carbonylation catalysts reactions, our team has been designed a series of new metal complexes of benimidazoles, which can be used for carbonylation catalyst of industry. Seven new benzimidazole derivatives were prepared by the o-phenylenediamine、oxalic acid、glycolic acid、monomethyl monopotassium malonate、ethyl cyanoacetate、succinic anhydride. The structures of them were confirmed by IR、Elemental analsis. The crystal structures of d and e were determined by X-ray single crystal diffraction of Germanic Bruker Smart APEX II CCD. The catalysis of them was tested by carbonylation reactions.
本文设计以邻苯二胺和草酸、羟基乙酸、丙二酸单甲酯、氰基乙酸乙酯、丁二酸单甲酯为原料采用PPA催化和无机酸催化法，合成了4种苯并咪唑-2-羧酸衍生物并进行了表征；培养了2个化合物d、e的晶体并测定和讨论了晶体结构；制备了3种未见报道的苯并咪唑金属配合物，对配合物在羰基化法制醋酐-醋酸反应的催化作用进行了初步试验。
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Through feasibility research of investment project and theory of Financial Evaluation, investment feasibility research has been done about the vinegar acid anhydride production project in this thesis.
本文运用投资项目可行性研究和财务评价理论，对醋酐生产项目进行了投资可行性研究。首先，进行了细致的市场环境分析，从醋酐行业国内外市场现状、项目投资环境、主要产品市场方面进行细致的分析。
- 更多网络解释与醋酐相关的网络解释 [注：此内容来源于网络，仅供参考]
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acetic acid bacteria：醋酸细菌
acetic acid 醋酸 | acetic acid bacteria 醋酸细菌 | acetic anhydride 醋酐
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acetic acid fermentation：醋酸发酵
acetic acid bacterium 醋细菌 | acetic acid fermentation 醋酸发酵 | acetic anhydride 醋酐
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Project of Acetic Anhydride 100,000t/y：年产10万吨醋酐项目
12,"年产30000吨赖氨酸项目","Project of Lysine 30,000 t/y" | 13,"年产10万吨醋酐项目","Project of Acetic Anhydride 100,000t/y" | 14,"年产10万吨甲醇项目","Project of Methanol 100,000 t/y"
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acetic acid anhydride：醋酐
28 separator分离器 | 29 acetic acid anhydride 醋酐 | 30 catalyst and solvent催化剂与溶剂
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acetic aldehyde：[医] 乙醛, 醋醛
1172acetic acidand boiling test[医] 乙酸煮沸试验(检尿白蛋白) | 1173acetic aldehyde[医] 乙醛, 醋醛 | 1174acetic anhydride[化] 乙酐; 乙酸酐; 氧化乙酰; [医] 醋酸酐
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acetic bacteria：醋酸菌
acetic anhydride 醋酐 | acetic bacteria 醋酸菌 | acetic ester 醋酸酯
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biuret：双缩脲
2.碱性苦味酸(Baljet)试剂:3.亚硝基铁氰化钠一氢氧化钠的(Legal)试剂:2.醋酐一浓碱酸(Liebermann)试剂:2.三氯化锑(Carr-Price)试剂:25g三氯化锑溶于15g氯仿中(亦可用氯仿或四氯化碳的饱和溶液). 1.双缩脲(Biuret)试剂:
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phenylacetic anhydride：苯醋[酸]酐;苯乙酐
苯乙酰胺 phenylacetamide | 苯醋酸;苯乙酸 phenylacetic acid | 苯醋[酸]酐;苯乙酐 phenylacetic anhydride
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Air stream regularity：气流规律性
acetic anhydride 醋酐 | Air stream regularity 气流规律性 | aldehydes 醛
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acetyl salicylic acid：乙酰水杨酸
1853年,法国化学家夏尔.热拉尔(Charles Gerhardt)用水杨酸与醋酐合成了乙酰水杨酸(acetyl salicylic acid),这就是阿司匹林. 除了叫乙酰水杨酸,它也叫醋柳酸,似乎标明了它最初的来历. 但当时它并没有马上流行,直到1898年,