dehydration reaction 中文意思是什麼

dehydration reaction 解釋
脫水反映
  • dehydration : 除濕，脫水，乾燥
  • reaction : n 1 反作用，反應；反沖；反動力。2 【政治學】反動，倒退；復古（運動）。3 【化學】反應，【物理學】...
  1. The dehydration of ferrous oxalate dihydrate conformed to nuclei production and nuclei growth model, and the decomposition of ferrous oxalate conformed to phase boundary reaction

    在靜態自產氣氛下，二水草酸亞鐵脫水反應遵循隨機成核與核增長模型，草酸亞鐵熱分解生成氧化鐵遵循相界面控制動力學模型。
  2. Abstract : aim to synthesize a new prodrug, resveratrol trinicotinate. methods in presence of lithium and a catalytic amount of naphthalene, the reaction of p - methoxybenzyl trimethylsilyl ether and 3, 5 - dimethoxylbenzaldehyde gave resveratrol after a series of translation. resveratrol trinicotinate was obtained by the reaction of resveratrol and nicotinoyl chloride hydrochloride. results a mutual prodrug resveratrol trinicotinate was designed and synthesized. conclusion a novel method for synthesis of resveratrol and resveratrol trinicotinate has been afforded. the e - isomer is selectivily obtained by dehydration of the compound 2 with khso4

    文摘:目的合成一種前藥白藜蘆醇煙酸酯.方法在金屬鋰片和催化量的萘的存在下， 3 ， 5 -二甲氧基苯甲醛與對甲氧基苯甲醇的三甲基硅醚反應經過一系列轉變得到白藜蘆醇，白藜蘆醇與煙酰氯反應得到白藜蘆醇煙酸酯.結果設計併合成了白藜蘆醇煙酸酯.結論提供了一種合成白藜蘆醇及白藜蘆醇煙酸酯的方法，採用khso4脫水可選擇性的得到反式產物
  3. The optimum technic conditions have been gotten in in preparaing high dispersive a1 ( oh ) 3 colloid by controlling reactant concentration, ph value, reaction temperature, matured time. they are the prereguisite to prepare nanopoder of a - a1203. this paper entirely and systematically studies the following three kinds of drying stages : oven drying, dehydration with alcohols and azeotropic distillation stage

    本文採用逐步逼近法進行了氫氧化鋁膠體的沉降實驗，對膠體形成的體系反應物的初始濃度、體系的ph值、反應溫度和膠體的陳化時間進行了系統優化，並獲得了制備高分散氫氧化鋁膠體的最佳工藝參數；此膠體經過過濾、 80下烘乾后所得樣品，在掃描電鏡下直接觀察其粒徑為50nm ，且分佈范圍窄，顆粒的表面清潔，為球形。
  4. Inspect whether there is material in reaction kettle 3, and close all valves after inletting, then open the heating system and inlet valve and emptying valve of recovery tank to distill for dehydration

    檢查3號反應釜是否已經進料，進料后關閉所有閥門，打開加熱系統和回收罐進料閥門.放空閥門，進行蒸餾脫水。
  5. ( 4 ) through the experiment we find that so24 / zno - sno2 ( 2 : 1 ) / la3 + is most active among the samples, when use it as catalyst, . dehydration reaction last 1. 5 hour, depolymerization temperature end at 230 - 240c and production ratio of crude lactide reach to 90 %

    相對傳統的氧化物催化劑，具有較為明顯的進展： （ 5 ）考察具有較高活性催化劑的理想反應條件，並對影響精製產物收率的重結晶因素作初步探討，指出重結晶也是影響精製收率的一個重要因素。
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