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- The condensation was carried out with an excess of glycol or of dicarboxylic acid. 聚縮反應是在二元醇或是在元羧酸過量下進行的。
- Succinic acid (butanedioic acid) A dicarboxylic acid formed by fermentation of sugars. 琥珀酸：為糖酵解過程中產生的二羧基酸。
- Fumaric acid (trans-butenedioic acid) An unsaturated dicarboxylic acid, which occurs in many plants. 延胡索酸（反丁烯二酸）：一種不飽和二羧酸，存在於許多植物體中。
- The metabolic characters of production phase in the fermentation of unde-cane dicarboxylic acid were analyzed. 分析了十三碳二元酸發酵過程中產酸期的代謝特點,對產酸期四相體系發酵動力學進行了研究。
- To study on processing technology of recover Tridecane Dicarboxylic Acid from mother liquor by extraction. 採用溶媒萃取方法,對十三碳二元酸濾液進行回收工藝研究。
- Monomolecular layers of pyrene as a sensor to dicarboxylic acids. 高莉寧; 房喻; 溫向鵬; 李遠剛; 胡道道.
- In this fashion the four entering carbons of two acetyl-CoA molecules are conserved to form one 4-carbon dicarboxylic acid. 用這種方式,由兩個乙醯輔酶A引進的四個碳,轉變成一個四碳二羧酸。
- Homocubane -2,4 - dicarboxylic acid (1) was converted into 2, 4 - dichlorohomocubane (3) by Barton chlorodecarboxylation. 高立方烷-2,4-二羧酸(1)通過Barton脫羧氯化反應,可合成出2,4-二氯高立方烷(3);
- The COD of the tridecane dicarboxylic acid wastewater is high about ten thousands, and there is high concentration sodium sulfate in the wastewater. 十三碳二元酸生產中有機廢水的COD值高達上萬,且含有高濃度硫酸鈉。
- It was pointed out that the key factor that restrict the development of PEN was the production of its intermediate 2,6-naphthalene dicarboxylic acid(2,6-NDA). 指出制約PEN發展的關鍵因素是其中間體2,6-萘二甲酸的生產。
- The diisoamyl glutarate in catalysis of silicotungsticacid was preparated by esterification of isoamyl alcohol and glutaric anhydride seperated from dicarboxylic acid. 用硅鎢雜多酸為催化劑,以從二羧酸中分離出的戊二酸酐和異戊醇為原料合成了戊二酸二異戊酯。
- A colorless crystalline dicarboxylic acid, C4H6O4, occurring naturally in amber and important in the Krebs cycle. It is also synthesized for use in pharmaceuticals and perfumes. 琥珀酸：一種無色的結晶三羧酸，C4H6O4，天然地存在於琥珀中，在克雷布斯循環中很重要。可通過人工合成用於藥物和香水中
- Diethyl glutarate was synthesized using glutaric anhydride and ethanol, which were separated from dicarboxylic acid, as raw material, heteropoly acid as catalyst. 以從二羧酸中分離出的戊二酸酐和乙醇為原料，用雜多酸為催化劑，合成了戊二酸二乙酯。
- Microbe concentration is the key index for judging the turning time from microbe growth to fermentation in the production of long chain dicarboxylic acid. 在長鏈二元酸發酵生產中,由菌體生長期轉入發酵產酸期(轉發酵)的主要判斷指標是菌體濃度。
- The synthesis of tridecane dicarboxylic acid diethyl ester with ethyl alcohol and tridecane dicarboxylic acid as reactants and cation exchange resin as catalyst had been studied. 以強酸性陽離子交換樹脂為催化劑,十三碳二元酸與乙醇為原料合成十三碳二元酸二乙酯,考察了影響反應的因素。
- Dicarboxylic acid mixture is a by product in process producing adipic acid from cyclohexane oxidizing, and contains succinic acid, adipic acid and glutarate acid and so on. 混合二元酸是環己烷氧化制己二酸生產過程中的副產品,其中含有丁二酸、戊二酸、己二酸等組分,其組成複雜,儘管價格便宜,但分離成本高,不經過分離進行綜合利用受到很大的限制。
- It was pointed out that the key factor that restrict the development of PEN was the production of its intermediate 2,6-naphthalene dicarboxylic acid(... 指出制約PEN發展的關鍵因素是其中間體2,6-萘二甲酸的生產。並介紹了2,6-萘二甲酸的製備方法。
- The effect and major factors influencing on the decolorizing fermentation liquor containing long chain dicarboxylic acid by activated carbon are investigated. 考察了活性炭對長鏈二元酸發酵液的脫色效果及脫色過程中的主要影響因素。
- The percentage contribution of dicarboxylic acids in both PM2.5 and PM10 was 0.8-1.0 % by mass. PM2.;5或PM10中之二元有機酸總量平均約佔大氣微粒質量濃度0
- Five kinds of aromatic dicarboxylic acids containing phthalazinone units are designed and synthesized. 設計合成了五種含雜萘聯苯結構的芳香二酸化合物,並對其結構進行了討論;
