查询词典 isomerization

The isomerization of resin acid was studied by HCl catalysis method, high temperature catalysis method and microwave-assisted method. Separation of abietic acid was analyzed with recrystallization method and many organic amine salt methods; Using abietic acid separated from resin acid as raw materials, 6 compounds of abietic-type resin acid derivetives were synthesized.

从产率、纯度和成本等方面分析对比了改进的二戊胺盐法、A胺盐法、B胺盐法和文献报道的二戊胺盐法分离提纯枞酸；以得到的枞酸为原料，进行氧化合成，得到6种枞酸的氧化衍生物，通过柱分离得到2种枞酸氧化衍生物纯品，并测试了其抑菌和对家蝇的拒食活性。

HCo 〓-catalyzed hydroformylation and isomerization of allene and propyne Allene hydroformylation favors the linear anti-Markovnikov product in high regioselectivity both kinetically and thermodynamically. The origin of this regioselectivity comes from the enhanced stability of the η〓-allylic intermediate (η〓-CH〓CHCH〓 Co 〓.

HCo〓催化的丙二烯和丙炔氢甲酰化反应及异构化反应 HCo〓催化丙二烯氢甲酰化反应的区域选择性主要由不可逆的丙二烯插入步骤决定，动力学和热力学因素都有利于形成anti-Markovnikov中间物种(η〓-CH〓CHCH〓)Co〓，形成Markovnikov中间物种Co〓是不具有竞争性的。

This paper describes the photochromism and thermal back-isomerization of 4-undecylen-[10]-amidoazobenzene and its homo-and copolysiloxanes in solution and solid film.

本文研究了对十一烯酰胺基偶氮苯及其硅氧烷均聚、共聚的梳状聚合物在溶液或薄膜状态下的光致变色性和热回复性。

The equilibrium constants k t/ k c of photochemical back-isomerization reaction of G1 are 1.76～1.77 approaching to 1, and thus it is appliable to photoswitch material.

G1的光回复异构化反应平衡常数 k t / k c为1.76～1.77，有作为光控开关材料的应用前景。

The isomerization principle of independent double bonds of unsaturated fatty acids from Chinese featural arboroid oils-stillingia oil was first studied in the paper in China. The synthesis principle, properties of products and practical experiment of the derivatives of conjugate acids were also discussed.

本文以中国特产木本油脂—梓油为原料，在国内首次对油脂不饱和脂肪酸孤立双键的异构化反应规律进行了系统的研究，并以异构化反应所得共轭酸为原料，对共轭酸衍生物系统产品的合成规律、产品性能及应用性实验进行了一定程度的探索。

Paleotemperature, vitrinite reflectance, sterane isomerization rate, smectite and authigenetic quartz concentrations in spacetime, respectively.

岩心的实测孔隙度、普通薄片和铸体薄片资料表明，鸳鸯沟地区新生界储层发育3个异常髙孔带。

The introduction and application of catalytic reformation and isomerization process in Baka refinery not only solved the problem of gasoline uprating, but also provided a effective way for the secondary processing of Ⅱ light ends .

巴喀原稳厂通过非临氢重整及异构化工艺技术的引进和应用，不仅解决了巴喀原稳厂汽油产品的升级换代问题，而且为油田Ⅱ轻烃的二次加工提供了有效途径。

The desulfurization networks of alkylthiophenes and benzothiophene on OTA catalyst were involving both and direct hydrodesulfurization, but also, containing disproportionation, isomerization.

烷基噻吩和苯并噻吩硫化物在OTA催化剂上脱硫反应网络一方面含有直接加氢脱硫反应，另一方面经历歧化、异构化和裂解等反应。

Zirconia loaded with tungsten oxide has been reported to be an efficient solid catalyst at relatively low temperatures in the skeletal isomerization of alkane or benzoylation of toluene, which are usually catalyzed by strong acids.

中文摘要文献上钨锆氧化物可以在低温的反应条件之下，对於烷类的异构化反应扮演有效的固体酸的角色。然而，钨锆氧化物其本身的比表面积通常只有50 m2/g。

Microcalorimetric measurements of NH~3 adsorption on catalysts reveal that the remarkable strong acidity and catalytic activity of the Al- promoted catalysts are caused by a change of distribution of acid site strengths and an enhancement in the number of strong and intermediate-strong acid sites effective for the n-butane isomerization and benzoylation of toluene.

NH~3吸附微量热结果表明，Al促进样品的强酸性和催化活性的显著提高是由于样品表面的酸位强度分布发生了变化，有利于正丁烷异构化反应和苯甲酰化反应的中强酸位和强酸位的酸量显著增加。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。