| EXAMPLE SENTENCES | ||
|---|---|---|
以发烟硫酸-高氯酸为催化剂，通过四氢呋喃的阳离子开环聚合合成了窄分子量分布的聚四氢呋喃(PTHF)。 Polytetrahydrofuran (PTHF) with narrow molecular mass distribution was prepared by cationic ring-opening polymerization of tetrahydrofuran using H_2SO_4 · SO_3-HClO_4 system as a catalyst. | ||
对丙酮、四氢呋喃、三乙胺、水混合物的分离进行了工艺流程设计和实验研究。 The process flow was designed and experimentally studied for separation of acetone, tetrahydrofuran (THF), triethylamine and water mixture. | ||
合成碱绿色4的最佳条件包括：尿素和氯化锌作为催化剂，四氢呋喃和双色。 The optimal conditions for synthesis of alkali green 4 include the carbamide and zinc chloride as catalyst, chloranil and bichrome. | ||
考察了大孔强酸性树脂对1，4 丁二醇脱水制四氢呋喃的催化作用。 The catalysis of big pore strong acid resin for 1,4-butanediol dehydration to tetrahydrofuran is investigated. | ||
所得的三环化合物经热分解和加氢反应，制备顺式和反式- 2,5 -二取代四氢呋喃。 The cis - or trans-2, 5-disubstituted tetrahydrofurans were provided by the hot decomposition and then hydrogenation of tricycle compounds produced. | ||
用汽液平衡釜测定了乙酸乙酯-异丙醚和乙酸乙酯-四氢呋喃二组分物系的汽液平衡数据。 Vapor-liquid equilibrium data of ethyl acetate-isopropyl ether and ethyl acetate-tetrahydrofuran binary systems were measured at atmospheric pressure 101. | ||
以降解四氢呋喃的气单胞菌THF01为对象，采用液体培养研究了各种理化因素对其生长的影响。 The effect of factors to the growth of aeromonas THF01 which degraded tetrahydrofuran was studied by liquid culture. | ||
真正实现了一锅法合成四取代的呋喃环化合物。 One pot synthesis of furans have come true really. | ||
简要考察了不同活性组分对合成四氢吡咯的影响。 Briefly investigated the effect of different active component on synthesizing pyrrolidine. | ||
然后，在无水THF中用氢化铝锂还原，得纯的手性2 ，4 二羟甲基四氢吡咯衍生物。 All of the 2,4 pyrrolindinediester derivatives were reduced with lithium aluminum hydride in anhydrous THF, and ten new chiral 2,4 Dihydroxylmethylpyrrolidine derivatives were found. | ||
