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catalysts相关的网络例句

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For the first time we synthesized nanoscale metal hydrides of lanthanum, neodymium, samarium, dysprosium, and ytterbium with high efficiency under mild condition by complexometric catalysis instead of traditional preparation at high temperature and high pressure. It is for the first time that we synthesized lanthanide organic compounds with catalysts or initiating agents at atmosphere and ambient temperature,and some of them are new compounds. Nanometric lanthanide metal powders are prepared by thermal decomposition of the compounds in vacuum. Differently from the traditional method, size of the products prepared by our method is less than 40nm, and the activity of the reaction is very high. They are pyrophoric at atmosphere. They can make some reactions without activity or low activity show extremely high activity .We investigated influent regulations of methods, conditions to scale and special surface.

我们首次成功地用络合催化等方法取代需在高温高压下进行的传统方法,在温和条件下高效率地合成出纳米尺寸镧、钕、钐、镝、镱的金属氢化物;首次在常压常温的条件下,通过催化、引发等方法合成镧系金属有机化合物,再将其真空热分解成功地制备了纳米尺寸的镧、钕、钐、镝、镱等金属粉末;与传统方法不同,这些方法得到的产品基本颗粒尺寸小于 40 nm,遇到空气燃烧,具有极高的化学反应活性,使原来活性很低甚至观察不到活性的反应大幅度提高反应速率和产率;考察了制备方法、制备条件等因素对晶粒尺寸、比表面积大小等的影响规律。

This paper reported that a higuy active solid supperacid TiO_2/SO_4 catalysts and synthetizing roue and technolozical condition of esterication reaction for buthlacid and isoamylol.

报道固体超强酸TiO_2/SO~(2-)_4(以下简称TiO_2/SO_4)作为催化剂进行丁酸与异戍醇酯化反应的合成路线和工艺条件。

The article discusses the research and development on catalysts for synthesis of salicylate .

综述了一类重要的精细化工产品—水杨酸酯的合成反应催化剂研究进展。

Thermal cracking and catalytic cracking of lab prepared endothermic hydrocarbon fuel NNJ 150 over USHY, HZSM 5 and SAPO 34 catalysts were studied.

吸热型碳氢燃料是为解决高超音速飞行器的冷却问题而立题研究的。

The catalytic cracking of NNJ 150 over USHY, HZSM 5 and SAPO 34 catalysts presented as that the selectivity of light olefins over USHY was the lightest among the three calalysts with a quicker deactivation, while HZSM 5 showed a longer catalyst life and lower selectivity of light olefins, for SAPO 34, both the conversion and the selectivity of light olefins were the lowest.

实现吸热型碳氢燃料这种功能的关键之一是选择适当的化学反应。由于碳氢燃料的裂化是吸热反应,而催化裂化与热裂化相比,能降低反应的温度,因此催化裂化是实现吸热型碳氢燃料功能较好的途径之一。由热力学可知,燃料裂化生成乙烯、丙

However the catalysts used for that reaction, involving their physicochemical properties, the structures and physical state, especially those under reaction conditions have not yet been investigated much or only scrappily.

虽然,各种工业用催化剂几乎均以V-K-S/SiO〓为基本成分,但配比可在较宽范围内变化,再加上引入多种助剂,更使这一体系变得更复杂,和难以深入研究。

Transesterification between dimethyl sebacate and 1,2,2,6,6-pentamethyl-4-piperidinol was studied with tetraisopropyl orthotitanate ,lithium amide and di-n-octyltin oxide used separately as catalysts.

对癸二酸二甲酯与1,2,2,6,6-五甲基哌啶醇的酯交换反应进行了研究;分别考察了四异丙基钛酸酯、氨基锂、氧化二辛基锡3种催化剂的性能;采用氢核磁共振确定了产物的结构;考察了以四异丙基钛酸酯为催化剂时反应温度、反应时间、原料配比和催化剂用量对反应的影响。

Finally, the article discussed the possible mechanism of multi-phase electrochemical degradation of wastewater through the XPS spectrum of the used catalysts surface: In the acid solutions, the electro-generated O_2 may get electrons on the porous graphite cathode and then form H_2O_2, H_2O_2 may diffused to the surface of catalyst and reacted with its active part to produce OH, which in turn can destruct organics. The catalyst functioned as both the catalyst to decompose H_2O_2 and the flocculants to sedimentate the degraded waste.

最后全文结合研究反应后催化剂表面的XPS光电子能谱推断了该体系降解污废水可能的反应机理:在酸性条件下,石墨双阳极产生的O_2被多孔扩散性石墨阴极还原成H_2O_2,并通过扩散传质作用在催化剂的表面活性中心分解为强氧化性中间产物·OH,强氧化性攻击有机物,使其降解为小分子有机物或CO_2和H_2O,催化剂在体系中即起催化作用也起吸附、絮凝作用。

Diamond single crystals were synthesized at a cubic press under high-temperature and high-pressure with the sheeted powder metallurgical iron-based catalysts, which were added by moderate copper powder.

以铁、镍单质金属粉和适量的电解铜粉为原料,采用粉末冶金方法制备规格为Φ15×0.5mm的片状铁基触媒,在六面顶压机上高温高压合成金刚石单晶。

Diamond single crystals were synthesized at a cubic press under high-temperature and high-pressure with the sheeted powder metallurgical iron-based catalysts,which were added by moderate copper powder.

mm的片状铁基触媒,在六面顶压机上高温高压合成金刚石单晶。

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推荐网络例句

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

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。