查询词典 catalysts

With this standard method, simultaneous quantification of DMC, MPC, DPC, phenol and anisole can be achieved accurately, which provide the standard methods for evaluation of different catalysts and control of the reaction process. The microwave-aided catalytic technique was applied in the transesterification of DMC and phenol.

分别以苯甲酸乙酯和丙酮为内标物，实现了对酯交换反应塔釜产品和塔顶馏分的同时定量，为评价催化剂活性的高低和工艺条件的优劣提供了标准化分析方法。

The activity of the co-catalysts consisting of H form zeolites ( HY, H-β and HZSM-5) and SnO in the reaction of anisole with acetyl chloride mainly depended upon the SiO2/Al2O3 molar ratio of the zeolite used.

由H型沸石(HY和H-ZSM-5沸石)和SnO组成的复合催化剂在苯甲醚与乙酰氯的酰化反应中的催化活性主要取决于所用沸石的硅铝比。

The preparation methods of anthraquinone and catalysts are discussed, and the domestic production methods of anthraquinone are introduced briefly.

论述了国内外制备蒽醌的方法及其催化剂，并简单介绍了国内蒽醌生产方法的应用。

The development of new catalysts has opened the chemistry to be applied to vegetable oils.

新催化剂的研发打开了植物油的化学应用之门。

The experimental results showed that Zn-P/HZSM-5 catalysts had high activity, stability and selectivity to aromatics.

结果表明，Zn-P/HZSM-5催化剂具有很高的活性、稳定性和芳烃选择性。

Is comparable to the size of aromatics, which suggests its potential applications as catalysts and adsorbents.

磷酸铝系列分子筛是二十世纪八十年代开发成功的一类具有中性骨架的微孔材料。

The high dispersion of Mo species and suicable strength of surface acidity of the catalysts favored the aromatization reaction.

在Mo/HZSM-5催化剂中，高分散状态的钼物种和适当强度的酸中心，有利于芳构化产物的生成。

ZSM-5 molecular sieve was widely used as catalysts for aromatization, catalytic cracking and isomerization.

ZSM-5分子筛是应用广泛的催化体系，常用于烷烃的芳构化、催化裂化及异构化。

The catalytic performances of prepared zeolite as catalysts for propane aromatization were investigated on a fixed-bed micro-reactor.

具有与苯分子动态直径相近的ZSM-5分子筛具有较高的烷烃转化率和芳烃选择性。

This paper reviews the progress in the research on a variety of heterogeneous asymmetric catalytic reactions with self-supported chiral catalysts.

本文概述了手性自负载催化剂的在一些不对称催化反应研究中取得的新进展。

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。