tert-butyl 叔丁基过氧化氢(8)   “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                    The relationship between hydrocarbon type composition and oxidation stability of medium lube oil base stocks has been studied. Oils used in this study are the ~#20 turbine oil stock derived from Daqing crude and the solvent-refined and dewaxed medium-heavy gas oil fraction from Huabei crude. It has been found that the polynuclear aromatics in the oils can more significantly enhance the oxidation stability of the white oil than the binuclear aromatics. Both single-ring aromatics and saturated hydrocarbons ar...             考察了大庆20~#透平油基础油及华北减二线精制油组成与其氧化安定性的关系。油中多环芳烃能显著提高饱和烃的氧化安定性,其次是双环芳烃;单环芳烃及饱和烃的氧化安定性较差。两种油中的胶质有一定抗氧活性,发现其中含有屏蔽酚型天然抗氧剂。同时还考察了油中最适芳烃量、硫化物及氮化物对其氧化安定性的影响。研究了两种油中各组分对264-二叔丁基对甲酚抗氧剂的感受性,两种油来源不同,其感受性有所差异。华北油比大庆油感受性好,两种油中胶质、碱性氮化物及单环芳烃的存在均使其感受性变差,硫化物则提高其感受性。 文摘来源          The principles and historical aspect of application of mutual solvents and surfac- tants as back-flow improvers to enhance load water-recovery in acidizing/fracturing operations are introduced intensively in the first part of this paper.In the second part a mutual solvent,diethyleneglycol mono-tert-butyl ether(DGMTBE),and three fluoro- surfactant-based back-flow,improvers of WF series are reported.DGMTBE is miscible with both water and oil.In comparision with commonly used ethyleneglycol mono-n-...             本文对互溶剂及表面活性剂用作助排剂的原理和国外在这方面所作的工作进行了综述。介绍了新研制的一种互溶剂和三种氟表面活性剂助排剂的性能和氟表面活性剂的现场使用效果。 文摘来源          In view of the inferior oxidation resistance of furfural in lube oil refining system, an anti-oxidant DBPC (2, 6-Di-tert-butyl-para-cresol) was added into furfural and tests for the lube-stock from Daqing crude were carried out in both bench-scale batch and continuous extraction units. The optimal concentration of added DBPC was 0.040w%. The yields of re-fined oils were enhanced by 6.47%(batch) and 4.41%(continuous) respectively as compared with the "traditional furfural extrac-tion", while the ...             针对糠醛润滑油精制系统中抗氧化性能差的缺点,在糠醛中加入抗氧剂DBPC,并在小型间歇式和连续式抽提装置中对大庆原油润滑油馏分进行试验,得出添加DBPC的最适宣浓度为0.040W%.同单纯糠醛溶液抽提相比,在保证或改善精制油质量的前提下,精制油收率分别提高了6.97%(间歇式)和4.41%(连续式),且降低了溶剂比,减少能耗15.3%.本文还对抗氧化剂的作用机理进行了探讨. 文摘来源   << 更多相关文摘         相关查询:  对查询结果不满意

CNKI小工具 在Springer中查有关的英文论文 在知识搜索中查有关tert-butyl的内容 在数字搜索中查有关tert-butyl的内容 在概念知识元中查有关tert-butyl的内容 在学术趋势中查有关tert-butyl 的内容

CNKI主页 |  设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务

2008 CNKI－中国知网

京ICP证040431号 互联网出版许可证 新出网证(京)字008号 北京市公安局海淀分局 备案号：110 1081725  2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社