tert-alkyl 叔烷基(4)   叔烷基      The etherification of FCC gasoline was studied. The octane number of FCC gasoline can be effectively enhanced by reacting methanol with i-C_4-7~= in FCC gasoline to form methyl tert-alkyl ethers on a resin type catalyst.      本项研究提供了一种催化裂化汽油醚化改质,提高其辛烷值的新方法,使催化裂化汽油中的C_4-C_7叔碳烯烃在树脂型催化剂作用下与甲醇反应,生成对应的甲基叔烷基醚,可以有效地提高汽油辛烷值. 短句来源      The etherification process for FCC gasoline is to react methanol with the isoolefines in FCC gasoline to form methyl tert-alkyl ethers on a resin type catalyst, so as to enhance the octane number.      催化裂化汽油醚化工艺是使汽油中异构烯烃与甲醇,在树脂型催化剂作用下醚化生成甲基叔烷基醚类,使汽油辛烷值提高. 短句来源      Besided, a series of sec- and tert-alkyl and cycloalkenyl substituted titanocene and zirconocene derivatives have been prepared and their ~1H NMR spectra was discussed.      通过上述反应所得的锂化合物合成了一系列新的仲、叔烷基和烯基取代的环戊二烯基钛、锆衍生物。 应用~1H NMR证明了化合物的结构。 短句来源      The standard heats of formation,the standard entropies,and the heat capacition of(C 4～C 7)methyl tert-alkyl ethers are estimated using additivity rules The heats of some reactions for etherification are also calculated The results indicates that the accuracy of the method is satisfactory for meeting the need of the engineering developing of etherification      采用基团贡献法对甲基叔烷基醚（C4～C7）的标准生成热、绝对熵及等压热容等热化学性质进行了估算，同时估算了部分醚化反应的反应热。 结果表明，其精确度完全可满足工程开发的需要。 短句来源   “tert-alkyl”译为未确定词的双语例句      And it has been suggested that the second-order dependency on TiCl_4 was attributed to the dimeric gegenions which formed via monomeric TiCl_4 ionizing a dormant tert-alkyl chloride chain end to create an activated chain with a monomeric gegenion TiCl_5~-,and then the monomeric gegenion reacted with another molecule of TiCl_4 to form the dimeric gegenion Ti_2Cl_9~-.      单分子TiCl4与休眠分子链末端进行离子化反应并产生活性中心碳正离子和反离子TiCl5-,TiCl5-与另一个TiCl4分子进一步反应则形成双分子反离子Ti2Cl9-,导致TiCl4表现为二级动力学关系的机理。 短句来源      The 6, 6-dialkylfulvene reacts with organolithium, organomagnesium reagents to give tert-alkyl substituted cyclopentadienyl anion. The anion reacts with 2-furoyl chloride or 5-bromo-2-furoyl chloride to yield the furoyl substituted fulvene.      6，6－二烷基富烯和有机锂、有机镁试剂反应可以得到叔碳取代的环戊二烯基负离子，该负离子与2－呋喃甲酰氯或5－溴代－2－呋喃甲酰氯反应，得到呋喃甲酰基取代的富烯化合物。 短句来源   相似匹配句对      Synthesis of p tert alkyl phenols with unsaturated long chain      具有不饱和长链的对-叔烷基苯酚的合成 短句来源      is the number of alkyl at the (?)      a 等于 a 碳原子上的烷基数减1; 短句来源      TERT-TRAIL.      TERT-TRAIL构建成功。 短句来源      Synthesis of alkyl phenones      烷基苯酮的合成 短句来源      Preparation of o-tert-butylcyclohexanone      邻叔丁基环己酮的合成 短句来源 查询“tert-alkyl”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-alkyl Solid-phase photolysis of tert-alkyl-containing nitrogenous peroxides 例句来源       3,4-Di-tert-alkyl-1,3,4-oxadiazolidines3d and11-14 were found to be promising objectes for optical resolution. 例句来源       Synthesis and aminoaminating ability of N,N-di-tert-alkyl-N'-alkoxydiazenium salts 例句来源       1.A study has been made of the hydrogen exchange between tert-alkyl bromides and acetic acid (tert-butyl bromide, 2-methyl-2-bromobutane, 2-methyl-2-bromopentane). 例句来源       The ionization of tert-alkyl trifluoroacetates in anhydrous trifluoroacetic acid 例句来源       更多                    The etherification of FCC gasoline was studied. The octane number of FCC gasoline can be effectively enhanced by reacting methanol with i-C_4-7~= in FCC gasoline to form methyl tert-alkyl ethers on a resin type catalyst. The results showed that under reaction conditions: t=60-80℃, P=0.8-1.OMPa,LHSV-6-5h~(-1), oil/methanol=16-25 (V), the ether content in the etherified gasoline is higher than 3%(wt) and the RON is increased byl.5-2.0 units. When the IBP-100℃ light FCC gasoline is etherified with ...             本项研究提供了一种催化裂化汽油醚化改质,提高其辛烷值的新方法,使催化裂化汽油中的C_4-C_7叔碳烯烃在树脂型催化剂作用下与甲醇反应,生成对应的甲基叔烷基醚,可以有效地提高汽油辛烷值.试验表明在温度为60-80℃、压力为0.7-1.0MPa、空速(V)为3-5h~(-1)、汽油/甲醇为16-25条件下,汽油中的醚含量在3m%以上,汽油RON可提高1.5-2.0单位.如初馏点-100℃的催化裂化轻汽油进行醚化,然后再与未经醚化的重汽油调合,调合汽油平均含醚3-4m%,汽油RON提高3.1个单位,并能延长催化剂使用寿命. 文摘来源          The etherification process for FCC gasoline is to react methanol with the isoolefines in FCC gasoline to form methyl tert-alkyl ethers on a resin type catalyst, so as to enhance the octane number. Based on laboratory results, pilot plant studied were carried out with satisfactory results. This process requires only simple equipments. It Is easy to operate and easy to commercialize. Its profit margin is high.             催化裂化汽油醚化工艺是使汽油中异构烯烃与甲醇,在树脂型催化剂作用下醚化生成甲基叔烷基醚类,使汽油辛烷值提高.在小型试验基础上进行了中型试验,获得较好的结果.该工艺设备简单、操作容易、易于工业化,并且经济效益高. 文摘来源          The steric effects on the reaction of 6, 6-dialkylfulvene with organolithium have been studied. Reaction of ethyllithium with 6, 6-dialkylfulvene, CH=CHCH=CHC= CRR~1, when R=CH_3R~1=CH_3, C_2H_5, C_6H_5; R=R~1=C_2H_5, readily results in the formation of reduetion products. The addition produets were formed by the reaction of n-butyllithium with 6, 6-dialkylfulvene when R=CH_3, R~1=n-C_3H_7, n-C_4H_9. The analogous reaction of 6, 6-polymethylenefulvene, CH=CHCH=CHC=C(CH_2)_n with organolithium (R~2 Li) was a...             本文研究了6,6-二烷基富烯与有机锂反应的立体效应。6,6-二甲基、甲基乙基、二乙基、甲基苯基富烯与乙基锂易发生环外双键的还原反应。6-甲基-6-正丙基、异丁基富烯同正丁基锂则发生环外双键的加成反应。6,6-多亚甲基富烯[C_5H-4=C(CH_2)_n]与有机锂的反应随n值不同而异,n=4的富烯同正丙基锂和正丁基锂进行α-攫氢和环外双键还原的竞争反应;n=5,6的富烯与乙基锂、异丙基锂和异丁基锂发生还原反应,与正丙基锂和正丁基锂则进行加成与还原的竞争反应。n=4的富烯与芳基锂发生α-攫氢反应,随n值增大则倾向于加成反应。通过上述反应所得的锂化合物合成了一系列新的仲、叔烷基和烯基取代的环戊二烯基钛、锆衍生物。应用~1H NMR证明了化合物的结构。 文摘来源   << 更多相关文摘         相关查询: tert- - tert- tert-butoxide tert-butyl di-tert tert-olefins tert-butylphenyl tert-butylhydroquinone 2-tert tert-octylphenol tert-pentyl tert-pentanol  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-alkyl的内容 在数字搜索中查有关tert-alkyl的内容 在概念知识元中查有关tert-alkyl的内容 在学术趋势中查有关tert-alkyl 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