查询词典 hydrogen chloride

It was found that with the Ni-Zr-Ce/Al2O3 catalyst prepared in present work the production of aniline from benzene, hydrogen peroxide and aqueous ammonia could be realized under mild conditions, that is, at about 50 °C and under atmospheric pressure, and the selectivity of aniline is much higher than that of phenol.

发现在常压、50 ℃的温和条件下，该催化剂对苯、氨水与 H_2O_2直接氧化胺化生成苯胺有较好活性，并且其对苯胺的选择性远远大于对苯酚的选择性。

A series of Ni-V/γ-Al2O3 catalysts were prepared and used in the one-step synthesis of aniline from benzene, hydrogen peroxide, and aqueous ammonia and/or urea.

设计并制备了Ni-V/γ-Al2O3催化剂，研究了其上苯用过氧化氢氧化氨化一步直接合成苯胺的性能和不同氨基源对合成苯胺的影响。

The present thesis deals with the study of the direct oxy-amination of benzene to aniline with aqueous ammonia using hydrogen peroxide as the oxidant under mild reaction conditions (low temperature and atmospheric pressure).

本文采用苯为起始原料，以氨水为氨基源，过氧化氢为氧化剂，在温和条件下研究了由苯直接氧化氨基化合成苯胺的反应。

The empirical Freundlich equation was successfully employed to describe the adsorption process. Due to hydrogen-bonding interaction between the tertiary amino groups on the resin and the amino groups of p-methylaniline, the adsorption capacity towards p-methylaniline of NDA-8 is higher than that of NKA when the equilibrium concentration is 5 mmol/L.

结果表明：2种树脂吸附对甲苯胺均符合Freundlich等温吸附方程，NDA-8树脂表面叔氨基与对甲苯胺之间的氢键作用可有效强化吸附能力，在平衡浓度均为5mmol/L的情况下，其吸附容量达到NKA的1.5~1.6倍。

We synthesized polynitrobenzenes by oxidation of polynitroanilines by peroxysulfuric acid (hydrogen peroxide dissolved in sulfuric acid, it is also known as Caro's acid) several years ago.

我们曾在若干年前用过硫酸(过氧化氢溶于硫酸中，亦称卡洛氏酸)氧化多硝基苯胺而合成了多硝基苯类(硝基数3至6)。

Even if will be these year hydrogen abundant young people will also have the fall in the blues, is frustrated will be worried, but they like with a word being broad, that will be 'is tired '!

即使是那些年轻气盛的年轻人也会有情绪低落，失意烦闷的时候，但他们喜欢用一个词概括，那就是'累'！

We will consider this Zeeman effect for the hydrogen atom .

我们将对氢原子考虑此塞曼效应。

"On Earth, microorganisms thrive about 1.2 to 1.9 miles beneath the Witwatersrand basin of South Africa, where natural radioactivity splits water molecules into molecular hydrogen and oxygen," Mumma said.

&在地球上，活跃在南非Witwatersrand盆地下面1.2到1.9英里的微生物将水分子分解成氢和氧，&MUMMA说。

The most interesting possibility is that Mars harbours "deep bio-communities" that use hydrogen as an energy source and emit methane, similar to those found 2-3km below ground in the Witwatersrand basin of South Africa.

最有趣的可能也许是火星的海湾下存在&深海生物群&，这些生物利用氢作为能量源，并释放出甲烷，就像在南非威特沃特斯兰德盆地地下2-3千米处发现的生物一样。

The most interesting possibility is that Mars harbours "deep bio-communities" that use hydrogen as an energy source and emit methane, similar to those found 2-3km below ground in the Witwatersrand basin of South Africa.

最有趣的一种可能性是，火星上栖息着&深层生物群&，它们以氢为能量来源，释放出甲烷，就像南非威特沃特斯兰德盆地2000至3000千米地下发现的生物。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48