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The content Of isoalkanes decreased when NiSO_4 was loaded, for supported Ni oxidecould promote the dehydrogenation of the precursors of aromatics by unimolecular reactionwhich did not generate negative hydrogen ions, and the carbonium ions could not obtainsufficient negative hydrogen ions to promote hydrogen transfer reaction.

负载氧化镍以后异构烷烃含量下降,氧化镍可以通过脱氢促进芳构化反应,使正碳离子得不到足够的负氢离子饱和使氢转移反应得到抑制。

As the active additive used in recharge able battery,Cobaltous oxide can improve crystal struchure of active substance,raise using rate upto 10%,shorten oxidiaing process of nickel electric pole,reduce internal stress of pole plate.

近年来氧化亚钴材料作为二次电池材料中的有效添加剂,可使电池中活性物质晶型得到改善,利用率提高10%以上,同时提高了镍电极的氧化过程,减少了极片内应力,使充放电效率得到改善,解决了使用放电不足问题,延长电池的使用寿命。

The characteristics of the AP include (1) in addition to the formation of hydrogel in aqueous alkaline or polar organic solution, AP can form carbonaceous hydrogel in neutral and acidic aqueous solutions, which extents the application of carbonaceous sol-gel;(2) AP contains a large amount of nitric groups which decomposes quickly by thermal initiation, releasing a large amount of gases and heat, indicating explosive properties of the AP;(3) metal salt-containing AP is also explosible by thermal initiation, and the metal in AP promotes the explosion.

以沥青为碳源,用氧化法制备水性沥青过程中,浓硫酸和浓硝酸的比例、用量、氧化温度及氧化时间对水性沥青的收率皆有影响。经过氧化后,沥青上含有许多含氧官能团,导致水性沥青溶于水。含氧官能团越多,水性沥青越易溶于水。调节制备条件,可使水性沥青不仅可以在碱性水溶液中形成凝胶,而且可以在中性和酸性水溶液中形成溶胶、凝胶,从而拓宽了炭基溶胶—凝胶法制备炭基纳米材料的应用范围。

Research results of phase equilibrium for the KOH—K〓CrO〓—H〓O system, the KOH—KAlO〓—H〓O system and the KOH—K〓CrO〓—KAlO〓—H〓O system revealed that lower concentration of KOH was beneficial for the crystallization of KAlO〓, and within a certain range, higher concentration of KOH was favorable for the crystallization of K〓CrO〓.

KOH—K〓CrO〓—H〓O体系,KOH—KAlO〓—H〓O体系和KOH—K〓CrO〓—KAlO〓—H〓O体系相平衡研究结果表明,较低的氢氧化钾浓度有利于铝酸钾结晶析出,一定范围内,较高的氢氧化钾浓度有利于铬酸钾结晶析出,因此,通过控制氢氧化钾浓度可以使铬酸钾—铝酸钾—氢氧化钾得以分离。

Phosphorus oxide 1-10 wt.%, and aluminum oxide. The molar ratio of tungsten oxide to molybdena oxide is 2.6-30. The method comprises introducing nickel oxide, molybdena oxide, tungsten oxide and phosphorus oxide into aluminum oxide carrier.

该催化剂由包括向氧化铝载体中引入磷、钼、镍和钨,其中,各组分的用量使催化剂焙烧后的组成为:氧化镍1-10重量%,氧化钼和氧化钨之和大于10至50重量%,氧化磷1-9重量%,余量为氧化铝,其中,以氧化物计,钨和钼的摩尔比大于2.6至30。

In the initial stage of the bioleaching, when the bacteria are not active, the chemical oxidation of ferric irons to the solid sulfide minerals is primary; While in the whole course of the bioleaching, it is very limited; ferric irons inhibit the bacterial activity, lower the oxidational ability of the bacteria to ferrous irons in the liquid phase; ferric irons and their precipitations reduce the quantities of the attached bacteria and their activity, and have bad influence on the direct bioleaching action.

结果表明,在浸出的初始阶段,Fe3+的化学氧化作用是主要的;但在整个金属浸出过程中,Fe3+的化学氧化作用是很有限的;Fe3+对T.f菌有一定的抑制作用,降低了它们对液相中Fe2+的氧化能力;Fe3+及其沉淀使细菌在固体矿物颗粒表面的吸附量减少,降低了吸附细菌的活性,从而影响了细菌的直接氧化浸出作用。

The influences of conditions, such as the different elements in A site, reaction temperature and the reoxidation time etc.on partial catalytic oxidation of AFeO 3 catalyst are reviewed. The results show that the lattice oxygen from AFeO 3 pervoskite catalyst in A site occupied ...

结果表明,稀土金属(La ,Nd ,Sm ,Eu)占据A位的AFeO3钙钛矿型催化剂中的晶格氧适于甲烷选择性氧化制合成气,在完全氧化的LaFeO3催化剂上存在少量的强氧化性氧物种,通过控制再氧化条件,可使CH4 在LaFeO3催化剂的作用下,高转化率(~ 92 %)、高选择性(96 %)地生成合成气。

Experimental results revealed that triethanolamine has remarkable effect on arc restraining,which ...

实验结果表明:三乙醇胺可以有效抑制火花放电,增加膜层的厚度,使表面孔隙变小,提高表面光洁度;当三乙醇胺浓度为30g.dm-3时,膜层耐蚀性能最好;在阳极氧化过程中,三乙醇胺化学吸附于镁合金表面,从而改变微弧氧化过程中氧气气泡在镁合金表面的吸附强度和氧气气泡的大小,降低了微弧氧化陶瓷层孔隙率,提高了阳极氧化膜的致密性和耐蚀性。

The results showed that the POV of hemp seed oil was affected remarkably by temperature and time, and the effect of temperature was greater than that of time. The TBHQ had good antioxidation ability to hemp seed oil. TBHQ or BHA with isoascorbic acid or critic acid exhibited great antioxidation ability, the synergistic effect on the oil of critic acid was better than that of isoascorbic acid. When 0.02% TBHQ with 0.005% BHA and 0.01% critic acid or with 0.005%BHA and 0.01% isoascorbic acid was used in the oil, the shelf life of the oil could be prolonged from 4 months to 11~13 months at 20℃.

结果表明,温度、时间对汉麻籽油的自氧化过程有显著影响,且温度的影响更明显;叔丁基对苯二酚对汉麻籽油具有较好的抗氧化性能,柠檬酸和异Vc对TBHQ与丁基羟基茴香醚复配的复合抗氧化剂均表现出较强的协同抗氧化性能,且柠檬酸的协同抗氧化性优于异Vc;添加0.02%TBHQ+0.005%BHA+0.01%柠檬酸或0.02%TBHQ+0.005%BHA+0.01%异Vc复合抗氧化剂,可使汉麻籽油在20℃下的预贮藏时间从4个月延长至11~13个月。

The results show that the rate of heating decreases due to the growth of oxidation layer in soaking process when the thermal resistance between gas and slab increases. The quantity of loss of iron scale increases with the increase of the coefficient of air consumption under the condition of certain soaking temperature. When the coefficient of air consumption is certain, the quantity of loss of iron scale increases with the increase of soaking temperature rapidly. The results of numerical simulation is consistent with experimental ones, and the error is very small within the range of soaking temperature in CSP line.

研究结果表明:在加热过程中生成的氧化层增大了换热热阻,使钢坯的加热速度减小;钢坯氧化烧损量随加热速度的增大而减小;当达到同一特定的均热温度时,钢坯氧化烧损量随空气消耗系数的增大近似呈线性递增;当空气消耗系数一定时,钢坯氧化烧损量随均热温度的提高而急剧增加;数值计算结果与实验结果变化趋势一致,并在CSP均热温度范围内较吻合。

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