The neotame was synthesized from isobutylene , ethylene and aspartame via addition , oxidation , catalytical hydrogenation in 14 . 5 % total yield , the physical properties and infrared spectroscopy of product are identical with literature 摘要以异丁烯、乙烯和阿斯巴甜为原料，经加成、氧化和催化氢化等步骤合成了纽甜，总产率14 . 5 % （以异丁烯计） ，产品的物理性质与波谱数据与文献一致。
Finally , based on summarization of development status on catalyst for isobutylene preparation from isobutane through dehydrogenation , the suggestion was given that the great effort should pay to the development , utilization reasonably of abundant isobutane resource in china 最后，通过对我国异丁烷脱氢制异丁烯催化剂开发现状的总结，指出我国应大力合理开发利用丰富的异丁烷资源。
Rubber and rubber products - determination of the composition of vulcanizates and uncured compounds by thermogravimetry - part 1 : butadiene , ethylene - propylene copolymer and terpolymer , isobutene - isoprene , isoprene and styrene - butadiene rubbers 橡胶和橡胶制品.用热重分析法测定硫化和未硫化化合物的成分.第1部分:丁二烯乙烯-丙烯共聚物和三聚物异丁烯-异戊二烯异戊二烯和苯乙烯-丁二烯橡胶
And their improved catalytic activity can be effectively used at lower temperatures and higher production rates . as a result , significantly higher productivity and longer catalyst lifetime have been successfully demonstrated in many installations . we adopt comprehensive stratagem and competitive technology to develop our company D006mtbe催化树脂适用于上述炼油型和化工型的各类反应器，在床层反应温度30 - 60异丁烯含量15 - 50醇烯比0 . 95 - 1 . 05和空速2 - 5 h的工艺条件下，均有着优良的催化性能和较长的使用寿命。
The industrial manufacturing technique , the trend of development of neohexene , and the characteristics of these production technique were reviewed and analyzed in the paper , particularly about the selective dimerization of isobutylene and metathesis of - diisobutylene with ethylene were introduced 摘要对新己烯生产技术的现状和今后的发展趋势进行了综述，分析了由异丁烯和乙烯生产新已烯的技术特征，讨论了烯烃二聚工艺和催化剂、烯烃复分解工艺及相应的催化剂，指出了各种工艺的优势和不足。
Through orthogonal design experiments on synthesizing p - tert - butylcstechol from hydroquinone and isobutylene by using a new catalyst prepared from cobalt naphthenate and zinc chloride , the optimum technology parameters were obtained : mole ratio was 1 : 1 . 15 for hydroquinone and isobutylene , mass ratio was 100 : 20 for hydroquinone and catalyst , and the reaction temperature was 100 5 摘要用环烷酸钴与氯化锌复配的新型催化剂，以邻苯二酚、异丁烯为原料合成对叔丁基邻苯二酚，通过正交实验确定的较佳工艺参数为：邻苯二酚：异丁烯（物质的量比） 1 : 1 . 15 ，邻苯二酚：催化剂（质量比） 100 : 20 ，烷基化反应温度100 5 。
