硫化

In range of 300℃～900℃, all the transition metal oxide catalysts could get high ammonia conversion, during the initial stages of the reaction, the SO〓 conversion is relatively low since the catalysts have not been sulfureted, but it increases gradually and attain constant with rising temperature and time continuance,〓 is better than other catalysts in reactivity and elemental sulfur selectivity; XRD indicates that, in the SO〓-SCR process, stable transition metal sulfide is generated which is very important to SO〓 reduction and transition metal sulfide probably is the active phase of catalyst, further the reduction of SO〓 by H〓 to H〓S is the limiting step of all process, then the activity is somewhat related to its lattice oxygen yet not so notable; XPS indicates that little sulfur on surface exists as S〓 in sulfate, showing that TiO〓 could restrain the generation of sulfate.

对于过渡金属氧化物催化剂的研究发现，在300℃～900℃范围内，不同的催化剂均可获得很高的NH〓转化率，反应初期由于催化剂还未硫化，所以SO〓的转化率较低，随着温度升高和反应时间的延续，SO〓的转化率逐渐升高并达到了稳定值；七种过渡金属氧化物中，以〓对于NH〓还原SO〓反应的活性和选择性最好；XRD结果表明在NH〓-SO〓反应后生成了稳定的硫化物相，硫化物对SO〓的还原过程具有重要作用，催化剂的活性相可能是过渡金属硫化物，而且在硫化物催化剂上进行的H〓还原SO〓生成H〓S的反应是整个过程的速率控制步骤，所以催化剂的活性与其自身的晶格氧的氧化还原能力有一定的联系，但关系不明显；XPS结果表明催化剂表面的硫大部分以过渡金属硫化物的形式存在，只生成少量的S〓，说明TiO〓催化剂能够较好的抑制硫酸盐的生成。

Research results indicate that the Fe3O4 films sulfurized at 5~80kPa can he changed into FeS2 films.

研究结果表明，在5~80kPa的不同硫化压力下，Fe3O4薄膜均能够转变为FeS2薄膜。

The worn surface of the sulfurized steel disc was observed with a scanning electron microscope, while the chemical states and phase structure of carbon-nitrided carbon steel and of the sulfurized one were examined by means of X-ray photoelectron spectroscopy and X-ray diffraction.

采用MPX-200型摩擦磨损试验机考察了碳氮共渗及室温电解硫化处理后的20#碳钢的摩擦学性能，探讨了在干摩擦条件下载荷、渗硫处理时间和滑动摩擦时间对渗硫层摩擦系数的影响。

By comparison with docosanoic acid and sulfurized ios-butyl olefin, it was found that when sulfur element was int...

钢球磨损表面XPS分析结果表明，在摩擦过程中硫化廿二酸发生了摩擦化学变化，表面EPMA分析结果表明其表面保护膜富含氧和硫

It was found that the load carrying capacity of Ni P brush plating layer was increased obviously and the wear rates of Ni P and Ni Cu P brush plating layers were decreased very much with the addition of sulfurized olefin in lubricating oil.

结果表明，在基础油液体石蜡中添加适量的硫化烯烃润滑时，Ni－P镀层的承载能力显著提高，Ni－P镀层和Ni－Cu－P镀层的磨损率都明显降低。

The worn surface of the sulfurized steel disc was observed with a scanning electron microscope, while the chemical states and phase structure of carbon nitrided carbon steel and of the sulfurized one were examined by means of X ray photoelectron spectroscopy and X ray diffraction.

采用MPX-200型摩擦摩损试验机考察了碳氮共渗及室温电解硫化处理后20^#碳钢的摩擦学性能，探讨了在干摩擦条件下载荷、渗硫处理时间和滑动摩擦时间对渗硫层摩擦系数的影响。

Oxygen plays critical roles in lubrication mechanism. Oxygen affects the lubrication mechanism of additives all along, whether in sulfurized vegetable oil fatty acids containing active element or not in hydroxy vegetable oil fatty acids with pure carbon, hydrogen and oxygen not containing active element.

氧元素在润滑机理中有着关键作用，无论在含活性元素的硫化植物油脂肪酸，还是在不含活性元素的纯碳、氢和氧的羟基植物油脂肪酸中，氧元素始终影响着添加剂的润滑性。

Sulfurized docosanoic acid ; Rapeseed oil ; Tribological performance ; Synergistic action ; Wear mechanism

硫化廿二酸；菜籽油；摩擦学性能；协同作用；磨损机理

The supported WP catalysts showed considerable activity in HDS reaction of dibenzothiophene and HDN reaction of quinoline. The ibenzothiophene HDS activity and quinoline HDN activity of the spported WP catalysts synthesized by co-impregnation method was better than that synthesized by mixing method. The HDS and HDN activities of 25～30% WP catalysts synthesized by co-impregnation method and reduced at 650～750℃ were better than those of the corresponding sulfurized catalyst.

负载型WP催化剂具有较好的二苯并噻吩加氢脱硫和喹啉加氢脱氮活性，共浸渍法制备的磷化钨催化剂二苯并噻吩加氢脱硫和喹啉加氢脱氮活性要高于混合法制备的磷化钨催化剂。650～750℃还原制备的负载量25～30%的浸渍法磷化钨催化剂具有较高的二苯并噻吩加氢脱硫和喹啉加氢脱氮活性，高于相应的硫化态催化剂。

Two hydrofining catalysts, oxidation state RS-1 and sulfurized state RS-1, developed by Research Institute of Petroleum Processing were applied in the pre-hydrofining of 1.20 Mt/a CCR unit of SINOPEC Zhenhai Company, and the startups of using these two catalysts were reviewed.

介绍了石油化工科学研究院开发的硫化态、氧化态RS-1型加氢精制催化剂在镇海1.20 Mt/a连续重整装置预加氢精制单元中的开工情况。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。