查询词典 catalysts

In this dissertation,cumene and m-diisopropylbenzene were chosen as the main subject and the catalysts for oxidation as well as the mechanism were investigated.

本文以异丙苯和间二异丙苯为对象，研究氧化催化剂及其催化机理。

In this dissertation, metal oxide supported nano gold catalysts were applied to catalyze selective oxidation of cyclohexane to cyclohexanone and cyclohexanol using oxygen.

本文尝试采用普通氧化物负载的纳米金催化剂用于以氧气为氧化剂的环己烷选择性氧化反应。

The copolymerization of cycloolefin and α-olefin, and structure of the obtained polymer are significantly affected by the structure and symmetry of metallocene catalysts, electronic effect and steric hindrance of ligands.

着重介绍了加成聚合法中茂金属催化剂的结构对称性、配体的电子和体积效应、反应条件等对聚合活性、产物组成与序列分布及相关热性能的影响。

The copolymerization of cycloolefin and α-olefin,and the structure of the obtained polymer are significantly affected by the structure and symmetry of metallocene catalysts ,electronic effect and steric hindrance of ligands.

着重介绍了加成聚合法中茂金属催化剂的结构对称性、配体的电子和体积效应、反应条件等对聚合活性、产物组成与序列分布及相关热性能的影响。

The structural characteristics, such as short bridges, more rigid ligand, larger dihedral angle and different bridging groups, had significant effects on the stability, catalytic activity and polymerization behavior.The polymerizations of cycloolefin were carried out by catalystsβ-diketonate titanium, respectively.

催化剂桥基长度的缩短、两茂环之间的二面角及立体刚性的增大、两桥联基团的结构差异等因素对催化剂的热稳性、聚合活性及共聚情况都有一定的影响。

In the range of 15~55 ℃,the deactivation of catalysts has not been observed.

我们也曾对羧酸酯水解作过一些有益的探索[4]。

The factors which cause deactivation of catalysts are different because of the difference in the conditions of catalytic reactions.

合成甲醇的反应条件不同，造成催化剂失活的原因也有所不同。

The results show that the deactivation rates of catalysts were speeded up with increasing the preparation temperature.

结果表明，随著催化剂制备温度的升高，催化剂失活加快。

Over the AlPO〓, the deamination and dealkylation of diethylmine and triethylmine produced ethylene selectivily. Over AlPONs of acid-base bifunctional catalysts the ethylnitrol formed selectivily.

二乙胺、三乙胺在酸性的磷酸铝上选择性的脱烷基/脱氨生成乙烯，在酸碱两性的氮化磷酸铝上选择性脱烷基/脱氢生成乙腈。

Demands on middle-distillates selectivity have become increasingly severe; and a key problem to improve catalyst technology is how to achieve objectives for maximum middle-distillates selectivity To assess the catalytic performance of hydrocracking catalysts, a new laboratory method using decane as the model compound was develo...

本文首先建立了一种以正癸烷为模型化合物的微反评价方法，其中微反转化率与中型活性呈线性关系；采用回归方程可以拟合出中间馏分油选择性。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。