查询词典 inert
- 与 inert 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The results show that in the presence of NaHCO3 as base and DMF-H2O (volume ratio 2∶1) as solvent, the complex could catalyze not only iodobenzene but also non-activated bromobenzene quantitatively at 90 ℃ without the inert gas protection, and furthermore the catalyst could be recovered and reused more than eight times.
结果表明,在没有惰性气体保护的情况下,以NaHCO3作碱,以DMF水溶液(体积比为2∶1)作溶剂,在90 ℃时,该配合物不仅对活性较高的碘代苯能够定量地催化,对未活化的溴代苯也能定量地催化,并且催化剂能够回收再利用8次以上。
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The preparation method is characterized in that:(1) at minus 10 DEG C to 10 DEG C, a chloroauric acid solution with a certain concentration is added into a nano-Pt/C catalyst by ultrasonic or stirring mixture and the atomic ratio of Pt to Au is controlled between 18:1 and 5:1;(2) a small amount of monohydric alcohol or dihydric alcohol or trihydric alcohol of C1-C3 is added and is stirred at minus 10 DEG C to 10 DEG C for 10 min to 5h, so as to prepare the carbon-loading Pt-Au bimetallic nano electro-catalyst;(3) if necessary, the catalyst obtained by the step (2) is treated for 0.5 to 4h at high temperature ranging from 100 DEG C to 700 DEG C in the inert or reducing atmosphere, so as to adjust and control the grain size of the Pt-Au bimetallic nano electro-catalyst.
本发明涉及了一种高稳定性碳载Pt-Au双金属纳米电催化剂的制备方法,其特征在于:(1)在-10~10℃中,将一定浓度氯金酸溶液加入到纳米Pt/C催化剂中经超声或搅拌混合,控制Pt∶Au的原子比为18∶1-5∶1;(2)添加少量C 1 -C 3 的一元、二元或三元醇类,在-10~10℃下搅拌10min-5h,制备了碳载铂金双金属纳米电催化剂;(3)视需要,可将步骤(2)得到的催化剂在惰性气氛或还原气氛中经100~700℃高温处理0.5-4h,可调控Pt-Au/C双金属纳米催化剂的粒径。
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If the grounds of an opinion are not conclusive to the person's own reason, his reason cannot be strengthened, but is likely to be weakened, by his adopting it: and if the inducements to an act are not such as are consentaneous to his own feelings and character (where affection, or the rights of others, are not concerned) it is so much done towards rendering his feelings and character inert and torpid, instead of active and energetic.
因此,如果说,若是一个意见的根据对于本人自己的理性说来不不足以当结论而他却采纳了那个意见,这不但不能加强他的理性反倒会减弱他的理性;那么,同样也可以说,若是导出一项行动的东西并非在本人情感上和性格上吻合无间的东西(在和喜好或他人的权利无干的时候),这也只会使他的情感和性格趋于怠惰和迟钝,而不会使它们变得活跃而富有精力。
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With cellulose as the skeleton, gelatinized cassava starch solution and tungsten carbide were used as porogenic agent and inert densifier, respectively. The matrix prepared showed good sphericity and a logarithmic symmetrical distribution of particle size.
取得的主要结果如下:纤维素基复合层析基质的物理功能化:以再生纤维素为骨架,碳化钨粉末为增重剂,糊化木薯淀粉为制孔剂,采用&反相悬浮热再生法&和成球后去除淀粉方法,成功制备了纤维素/碳化钨复合微球,可用作层析介质的基质。
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Sophisticated psions recognize the slime as ectoplasmic seepage from the Astral Plane; this substance is utterly inert.
老练的心灵术士会认出这种黏稠状物质是一种从星界渗透过来的星质,这种物质是完全呈惰性的。
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Helium is inert, which removes all risk of flammability, both real and perceived.
氦气是惰性的,它删除所有危险的易燃,包括不动产和知觉。
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The XRD studies show obvious diffraction peaks associated with graphitic carbon and Co metal. Co particles in the composite are stable even at 2500℃ in inert atmosphere .
复合微球的 X 衍射图显示出明显的石墨碳和金属钴的衍射峰,2500℃石墨化后,复合微球中的钴仍能稳定存在。
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Amino-6-nitrobenzodifuroxan was prepared through a three-step reaction from starting material 3, 5-dinitrobenzoic acid:(1)3, 5-dinitroaniline (1) was synthesized from the reaction of DNBA and hydrazoic acid in inert solvent 1, 2-dichioroethane through Schmidt rearrangement with yield of 89.6%;(2) 1 was subjected to nitration to prepare pentanitroaniline (2) with yield of 51.1%;(3) The title compound was prepared from 2 and sodium azide in acetic acid through denitrogenation and then Schmidt rearrangement with yield of 86.8%, m.p.204℃~206℃.
以3,5-二硝基苯甲酸为原料经过3步反应合成了7-氨基6-硝基苯并二氧化吠咱:第1步反应,在二氯乙烷惰性溶剂中,DNBA与叠氮酸反应并发生Schmidt重排反应生成3,5-二硝基苯胺(1),产率89.6%;第2步反应,1在含100%硫酸的硝硫混酸中硝化生成五硝基苯胺(2),产率51.1%;第3步反应,2与叠氮酸反应,不经分离直接进行热解脱氮、Schmidt重排反应,得到目标化合物, m.p.204℃~ 206℃,产率86.8%。
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The results showed that under 200 W power, in the present of various alkalis, e.g. Na2CO3, NaF, KF, NaHCO3, and DMF-H2O (V∶V=5∶3) used as solvent, PVC-TETA-Pd could catalyze sodium tetraphenylborate to react quantificationally with iodobenzene in 20 min without inert gas protection, and all the phenyl g...
实验发现:在微波功率为200W时,在Na2CO3,NaF,KF,NaHCO3等多种碱的存在下,以DMF的水溶液(V∶V=5∶3)为溶剂,在无惰性气体保护下,PVC-TETA-Pd催化四苯硼钠与碘代苯在20min内即可定量反应,与常规加热方式相比,节省了大量时间;同时也证明了四苯硼钠的四个苯基均可参与Suzuki偶联反应;该催化剂回收再利用3次后,仍具有较高的催化活性。
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At the justificatory level, the complexities of pluralism undermine attempts to ground normative standards in putatively shared understandings which must either be so abstract as to be politically inert, or specific and thereby controversial within as well as across communities.
在正当性层面上,多元主义的错综状态摧毁了试图将规范标准奠基于公认的共有理性之上的做法(这些共有理性要么太过抽象而在政治性上并不适用,要么太具体了,以至于无论在社群内部或社群之间都是引起争议的)。
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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.
随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。
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But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.
不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。
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Closes the eye, the deep breathing, all no longer are the dreams as if......
关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。