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- The olefines (mainly C4 olefines)in the liquefied petroleum gas under the action of a selective catalyst were polymerized to form heigher molecular weight diners and trimers. 石油液化气中的烯烃(主要是碳四烯烃)在定向催化剂的作用下,选择叠合成分子量较大的聚合体。
- A highly selective catalyst for ODP is obtained by oxidizing CNF in concentrated HNO_3 and using(NH_4)_2HPO_4 as precursor for phosphoric oxides. At 500℃,a 39.63% selective to propene is achieved at a 42.07% propane conversion. 以磷酸氢二铵为前驱体;负载于经液相氧化处理的CNF上可以得到高选择性的ODP过程催化剂;在500℃下;丙烷转化率为42.;07%25时;丙烯选择性达到39
- selective catalyst reduction (SCR) 选择催化还原
- A better understanding of the reaction mechanisms and the involved intermediates as well as their conversion dynamics on the catalyst surface is the key for the design of the active and selective catalysts. 为达到从动力学控制反应的目的，对有关催化剂体系上反应所涉及的中间体及其转化动态学的研究还有待深入。
- The primary trends are that highly active and selective catalysts for different structure to be aromatic substrates are of exploited,and the ammoxidation ... 指出开发适合不同结构的芳香底物氨氧化反应的高活性、高选择性的催化剂,并对其进行深入的理论研究是今后的发展方向。
- The offer of a new job provided just the catalyst she needed. 这份新工作正是她所需要转变的契机。
- She helped to select a dress for Ruth. 她帮着给露丝选了一件衣裳。
- She is selective in the dresses she wears. 她对于自己穿的衣服精挑细选。
- selective catalystic reduction(SCR) 选择性催化还原
- PREPARATION OF A NOVEL SHAPE SELECTIVE CATALYST OF TOLUENE DISPROPORTIONATION FOR P-XYLENE 制取对二甲苯的新型甲苯择形催化剂的研制
- She only stays at select hotels. 她只住一流旅馆。
- Keywords monomethylamine;mordenite;shape selective catalyst;modification by ion exchange; 甲胺;丝光沸石;择形催化剂;离子交换改性;
- Can student willfully select the course? 学生可以随意选择课程吗？
- The last step is to regenerate the catalyst. 最后一步是将催化剂还原。
- A select group were invited to the wedding reception. 一群经过挑选的人士被邀请参加婚宴。
- I'm very selective about the people I associate with. 我与他人来往极慎重，不滥交。
- War is a catalyst to help them to choose. 战争是一副催化剂来帮助他们选择。
- Select the drive in which you want to store the document. 选择想把文件存储在其中的驱动器。
- Debate is the best catalyst of thought. 争论是思想最好的催化剂。
- Our shops select only the very best quality produce. 我们商店都是精选的质量最高的产品。
