tert-butyl 叔丁基(168) 丁基(199) 叔丁基过氧化氢(8)   叔丁基     SYNTHESIS OF ETHYL TERT-BUTYL ETHER OVER MODIFIED ZEOLITE β     改性﹀沸石催化合成乙基叔丁基醚 短句来源     Mathematical Simulation for the Synthesis Process of Ethyl Tert-butyl Ether by Means of Reactive Distillation     反应精馏合成乙基叔丁基醚过程的数学模拟 短句来源     Study on solid superacid catalysts for gas-phase synthesis of ethyl tert-butyl ether     固体酸催化剂气相催化合成乙基叔丁基醚研究 短句来源     Ethyl tert-butyl ether (ETBE) is another better gasoline additive than MTBE.     乙基叔丁基醚(ETBE)是较甲基叔丁基醚(MTBE)更为优良的汽油添加剂。 短句来源     Production of Ethyl Tert-Butyl Ether Using Low-Grade Ethanol     低浓度乙醇制乙基叔丁基醚 短句来源 更多          丁基     SYNTHESIS OF ETHYL TERT-BUTYL ETHER OVER MODIFIED ZEOLITE β     改性﹀沸石催化合成乙基叔丁基醚 短句来源     Mathematical Simulation for the Synthesis Process of Ethyl Tert-butyl Ether by Means of Reactive Distillation     反应精馏合成乙基叔丁基醚过程的数学模拟 短句来源     Study on solid superacid catalysts for gas-phase synthesis of ethyl tert-butyl ether     固体酸催化剂气相催化合成乙基叔丁基醚研究 短句来源     The liquid antioxidant through compounding the synthesized diamine with 2, 6-bis (tert-butyl) p-methyl-phenol (T501) had better effect on antioxygenation than using T501 alone, only 1/4 of T501 dosage was needed to meet the antioxydation specification without influencing other performance of the gasoline.     混合仲丁基取代对苯二胺与抗氧剂2,6-二叔丁基对甲基苯酚(T501)复配制得汽油用液体抗氧剂,其抗氧效果优于T501单独使用的效果,且达到抗氧指标的用量,约为T501用量的1/4,加入到油品中不影响油品的其它质量指标。 短句来源     Ethyl tert-butyl ether (ETBE) is another better gasoline additive than MTBE.     乙基叔丁基醚(ETBE)是较甲基叔丁基醚(MTBE)更为优良的汽油添加剂。 短句来源 更多          “tert-butyl”译为未确定词的双语例句     It is reported that the study on using H_3PW_(12)O_(40)/C as the catalyst to prepare MTBE from methanol and tert-butyl alcohol.     报道了负载型杂多酸H3PW1 2 O40 C在催化合成MTBE中的应用 . 短句来源     Under the optimum condition, the highest conversion of tert-butyl alcohol is 77.2? % and the yield of MTBE is 56.4?     在最佳反应条件下 ,叔丁醇最高转化率达到 77.2 % ,MTBE收率可达 5 6.4 % . 短句来源     At an optimal condition of temperature 120℃ , WHSV 2h 1 and the ratio of ethyl alcohol to tert-butyl alcohol 1.5 : 1.0, the conversion of tert-butyl alcohol was 64. 46% and the selectivity of ETBE reached 83.17%.     研究结果表明,在温度120℃,空速2 h-1,n(乙醇):n(叔丁醇)=1.5:1.0的条件下,叔丁醇的转化率为64.46％,ETBE的选择性高达83.17％。 短句来源     In this paper, SO_4~(2-)/γ-Al_2O_3 solid superacid catalysts were prepared by impregnation, and ETBE was gas-phase synthesed by tert-butyl alcohol and ethanol on SO_4~(2-)/γ-Al_2O_3 solid superacid catalysts.     笔者采用浸渍法制备了SO42-/γ Al2O3固体超强酸催化剂,并用XRD、IR表征了催化剂。 短句来源     The optimum condition are as follows,reaction temperature is 120 ℃ ,mole ratio of achol/tert-butyl alcohol is 2 to 1,quantities of catalyst is 0. 7g when the raw material is 10g,reaction time is 3. 5h.     结果表明最佳操作条件为:反应时间为3．5 h、反应温度为120℃、原料质量为10 g时催化剂用量为0．7 g、n(乙醇)∶n(叔丁醇)=2∶1。 短句来源 更多        查询“tert-butyl”译词为用户自定义的双语例句     我想查看译文中含有：的双语例句 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。   tert-butyl Compound 1-benzhydryl-4-(4-tert-butyl-benzenesulfonyl)-piperazine (7d) showed significant inhibitory activity. 例句来源       Peroxidase-catalyzed oxidation of o-phenylene diamine (OPD) was competitively inhibited by trimethylhydroquinone (TMHQ), 4-tert-butylpyrocatechol (InH5), and 4,6-di-tert-butyl-3-sulfanyl-1,2-dihydroxybenzene (InH6). 例句来源       Neurotransmitters dopamine and serotonin as well as active oxygen species hydrogen peroxide and tert-butyl peroxide were used as chemical signals. 例句来源       Radioprotectants of acute (indralin) and durable effects (indomethaphen) as well as natural α2-tocopherol) and synthetic antioxidants (ionol or 2,6-di-tert-butyl-4-methylphenol) efficient in survival test were used. 例句来源       The dynamics of total protein and procollagen biosynthesis was studied in the muscle tissue in gunshot wound during the natural healing and after treatment with antioxidant (AO) 2,6-di-tert-butyl-4-methylphenol (BHT). 例句来源       更多                    Methanol is the most promising candidate for gasoline extender.However,the intermiscibility of methanol-gasoline blends usually varies with temperature and their application is thus limited by phase separation.The intermiscibility of methanol and gasoline,expressed as phase separation temperature,was studied with respect to the gasoline composition,water content,and addition of methyl tert-butyl ether or isobutyl alcohol. Aromatic content in gasoline can affect the phase separation temperature g...             甲醇汽油混合物是一种最有希望的代用汽车燃料,但在低温季节,甲醇-汽油的互溶性(以相分层温度表示)常影响这类代用燃料的应用.为此,考察了汽油组成、混合物中水含量及助溶剂等因素对甲醇-汽油相分层温度的影响.芳烃含量对相分层温度的影响十分明显,除此以外,组成中其它烃类的分子结构及物理性质也将影响甲醇-汽油的相分层温度.混合物中的水含量也是极敏感的因素,即使很少量的水份存在,也会大大增高甲醇-汽油的相分层温度.添加甲基叔丁基醚或异丁醇有助溶效应,但加入7%甲基叔丁基醚以后,甲醇溶解度仍与含水量密切相关.根据实验结果,求出了关联相分层温度对甲醇含量和汽油中芳烃含量的回归方程.并给出了适宜于冬季温度低达-15℃地区使用的甲醇-汽油混合比例. 文摘来源          The kinetics of catalytic oxidation of various thiols in alkaline solution has been studied. For homogeneous catalytic oxidation. the reaction is zero-order forn-C_6 and tert-butyl thiols, i, e. the reaction is first-order at initial stage. but the rate of reaction levels into a steady stage and the reaction becomes zero-order when the conversion of thiol exceeds 50％. In the case of nonhomogeneous oxidation, the reacti...             研究了硫醇在碱液中的催化氧化动力学。在均相催化氧化反应中,C_5以下的伯硫醇和异丙硫醇反应对硫醇为零级。C_6以上伯硫醇和叔丁硫醇在反应过程中发生级数变化,反应初始阶段为一级;当硫醇转变约50％以后,反应进入速度稳定阶段,反应为零级。在非均相催化氧化中,随着硫醇的碳原子数目增加在碱溶液中的溶解度下降,反应速度减慢。提出了均相和非均相催化氧化反应机理,在均相催化氧化中,在初始阶段按离子-自由基反应机理进行,在速度稳定阶段按配位基置换机理进行。在非均相氧化中,硫醇的氧化速度取决于硫醇从油相向碱相中的转移。 文摘来源          Zeolite catalysts differ from other types of heterogeneous catalysts in structural molecule shape selectivity.They have shown very good catalytical activities for a series of organic conversion reactions.In this article,the pro- duction of aromatics from lower alcohols with zeolite catalysts was explored. Based on the method and principle introduced by Mobil Corporation and by using of a pulse microreactor-gas chromatography device,preliminary studies were made on the conversion reaction of methanol,ethanol...             沸石催化剂与其它多相催化剂的区别在于结构上的分子择形性。它在一系列有机转化反应中显示了很好的催化效能。本文用沸石催化剂探索了从低碳醇类制备芳烃的新途径;应用微型反应器与色谱联合装置对甲醇、乙醇、正丙醇、异丙醇、正丁醇、仲丁醇、异丁醇的转化反应作了初步研究;并着重研究了异丙醇在 ZSM-5沸石催化剂上转化为芳烃的反应,以及反应条件对反应产物分布的影响,表明该催化剂对低碳醇有较好的脱水作用和芳构化作用. 文摘来源   << 更多相关文摘         相关查询:  对查询结果不满意

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