查询词典 sieves

Mesoporous molecular sieves were synthesized by using natural clay, sodium silicate and aluminum chloride as raw materials and cetyl trimethyl ammonium bromide as template agent at room temperature alkaline condition.

室温条件下以天然黏土、硅酸钠和氯化铝为原料，十六烷基三甲基溴化铵为模板剂合成介孔分子筛。

Adsorption kinetics of ethanethiol and thiophene on 13X molecular sieves loaded with Ag+ was investigated in static state system.

在成品油中的硫主要是硫醇、硫醚、二硫化物和唾吩等有机硫化物。

Using either of the three clay minerals, gismondite, metahalloysite and kaolinite, subjecting them to calcination and treating them at various temperatures with appropriate amounts of water glass and alkali liquor, molecular sieves of the 13X type can be readily obtained.

X型分子筛不仅可作为吸附剂，而且也是一类新型的催化剂和催化剂载体，具有广泛的用途。

Metal-containing molecular sieves were very stable during oxidation reaction, which was carried out heterogeneously.

孔径较小的MeAPSO-34分子筛的催化氧化活性来自于外表面上过渡金属的催化作用。

The solid product was characterized by N2 adsorption-desorption, XRD, TEM and hydrothermal stability test. These results indicated that small amounts of HPMo in the synthesis media could reduce the amount of liquid in-organic acid and crystallization time greatly. And SBA-15 sieves prepared in this method exhibited an excellent hydrothermal stability, as its hexagonally ordered mesostructure was maintained after treated in 100 ℃ water over 72 h.

N2吸附-脱附、XRD、TEM和水热稳定性实验等检测结果表明：用这种方法不仅可以大幅度降低合成SBA-15分子筛所需液体酸的用量和缩短晶化时间，同时反应产物SBA-15在100 ℃的水中处理72 h后仍然保持六方有序的介孔结构。

Molecular Sieves - Science and Technology will cover, in a comprehensive manner, the science and technology of zeolites and all related microporous and mesoporous materials.

分子筛-科学和技术将覆盖，全面地，科学和技术的沸石和所有相关的微孔和介孔材料。

Based on the framework structure of mordenite, another novel structure molecular sieves with extra-large pores is designed.

基于丝光沸石的骨架结构利用Σ变换方法还设计了属正交晶系Cmcm空间群的MCR16超大孔新型分子筛骨架拓扑结构。

The experimental method and reaction conditions for synthesis of acetals and ketals on more than 40 catalysts such as solid superacids、 heteropoly acids、 con-exchange、 resins、 molecular sieves、 niobic acid、 vitamin C、 iodine、 sulfate、 chloride、 montmorillonite and etc.

综述了固体超强酸、杂多酸、固载杂多酸、脱铝超稳沸石、树脂、分子筛、铌酸、漆酚衍生物、维生素C、碘、硫酸盐、氯化物、蒙脱土等40多种催化剂催化合成缩醛的方法和反应条件。

The peaks intensity of Zr-MCM-41 mesoporous molecular sieves had a tendency to weak and the catalytic activities of them as catalysts in catalizing octadecanol to corresponding octadecanoic acid decreased with addition of zirconium ions.

水热环境下可加速反应物质的迁移运动，氨水缓慢释放OH-离子，促进了TEOS水解、缩聚反应及有机-无机组装过程更好地进行。

Highly ordered SBA-15 sieves have been successfully synthesized in a low concentration liquid inorganic acid medium via the addition of small amounts of phosphomolybdic acid.

通过在低浓度无机液体酸介质中添加少量磷钼酸，成功地合成了高度有序的SBA-15介孔分子筛。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐