查询词典 carbureted hydrogen

These results show that there could be at least twice as much hydrogen in the upper atmosphere of Venus than we thought, said Delva.

这些结果显示在金星的上层大气中的含氢量至少是我们估计的两倍。Delva说。

When the molar ratio of tungstic acid∶acidic organic additive∶cyclohexene∶ hydrogen peroxide was 1∶1∶40∶176 (tungstic acid, 2.5 mmol) and the tungstic acid/resorcinol used as catalyst, the isolated yield of adipic acid was up to 90.9% for 8 h.

当使用磺酸水杨酸、草酸、水杨酸为有机酸性添加剂时，随反应时间的增加，己二酸分离产率均升高，但反应 6 h 以后，己二酸分离产率随时间的变化不明显。当磺酸水杨酸用量为 2.5 mmol 时，己二酸分离产率和纯度均较高。

The catalyzed oxidation of cyclohexanol with 30% aqueous hydrogen peroxide by mass fraction to produce adipic acid can be achieved using tungstic acid -acidic additive catalyst system in the absence of organic solvents and phase-transfer reagent.

以钨酸-酸性添加剂为催化体系，在无有机溶剂和相转移剂的情况下，催化30%过氧化氢氧化环己醇合成己二酸。

Cyclohexene ; catalytic oxidation ; tungstic acid ; hydrogen peroxide ; adipic acid

环己烯；催化氧化；钨酸；过氧化氢；己二酸

When the molar ratio of tungstic acid∶acidic organic additive∶cyclohexene∶hydrogen peroxide was 1∶1∶40∶176 (tungstic acid, 2.5 mmol) and the tungstic acid/resorcinol used as catalyst, the isolated yield of adipic acid was up to 90.9% for 8 h.

以钨酸/有机酸性添加剂为催化体系，在无有机溶剂、相转移剂的情况下，催化30%过氧化氢氧化环己烯合成己二酸。

Not only the hydrogen energy is saved, but also the catalyst is composed of transition element.

该方法不仅节省了氢源，而且用普通的过渡元素和主族元素催化剂，避免了对贵金属的依赖。

And therefore it has the potential applications in green chemistry and chemical process,organic reactions areas.The literature review section of the thesis gave a brief introduction of the important applications in the green chemical process as well as the status of organic reactions research in NCW,and also summarized the applications in different kind of reactions such as hydrolysis,dehydration/hydration,alkylation,acylation, Diels-Alder reactions,rearrangements,condensations,hydrogen isotope exchange reaction,oxidation-reduction reaction,organometallic reactions.

论文的综述部分简要介绍了近临界水在绿色化工过程中的重要应用价值和国内外在近临界水中进行有机化学反应的研究现状，以及以近临界水作为反应溶剂或催化剂在水解反应、脱水/水合反应、烷基化、酰基化、Diels-Alder反应、重排反应、缩合、氢同位素交换反应、氧化还原反应、有机金属反应等反应类型中的应用。

Due to there is hydroxyl group in all the alcohols, and they can form intermolecular hydrogen bond with MB-Hb system which results in the aggregation of them . The adding of these straight chain alcohols result in enhancing of RRS with different degrees except methanol.

由于所有的这些直链醇均含有羟基，他们可以与MB-Hb 体系通过分子间氢键形成大的聚合物，从而导致RRS强度不同程度的增强，除了甲醇外。

The effects of the pretreatment condition, substrate concentration and initial pH on the hydrogen production were investigated in batch cultivations.

系统考察了底物预处理条件、初始pH值和底物浓度对玉米芯产氢能力的影响。

However, if some of the hydrogen atoms are absent and the usual single bond between carbon atoms has been replaced by a double bond, then it is unsaturated.

但是，如果一些氢原子也没有和通常的单键碳原子之间已取代双键，那麼它就是不饱和。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"