氢气的

The invention uses benzene carbonic acid as raw material, uses hydrogen gas as reducing agent, and uses ZnO and CeO2 as main accelerating agent. In solid-bed reactor the invention carries out hydrogenation reduction reaction. The reaction temperature is 340-440Deg.C, gas hourly space velocity is 600-4800h-1, hydracid mole rate is 20:1-160:1, the selectivity ratio of benzaldehyde is 99%, and the productivity is above 95%.

该方法以苯甲酸为反应原料，以氢气为还原剂，以ZnO和CeO 2 的复合氧化物为主催化剂，在固定床反应器中，进行气相加氢还原反应，反应温度为340℃～440℃，气时空速为600h -1 ～4800h -1 ，氢酸摩尔比为20∶1～160∶1，采用本发明制备苯甲醛的选择性可达99％，收率可达95％以上。

The invention provides a process for production of methanol from a feed stream rich in hydrogen carbon monoxide and carbon dioxide.

本发明提供一种从富含氢气、一氧化碳和二氧化碳的进料流生产甲醇的方法。

In nature,some green algae can produce hydrogen after incubation under anaerobic conditions,during which hydrogenase is synthesized and activated.

自然界中存在于藻类和细菌中的氢酶是高效催化氢气氧化和质子还原的氧化还原酶，在生物产氢和能量转换过程中发挥着重要作用。

By the role of hydrogenase, hydrogen with biohydrogen-bacterium produced can quickly reach the balance of hydrogen isotope exchange with water medium.

在氢化酶作用下，产氢菌形成的氢气与水介质之间可以迅速的达到氢同位素交换平衡。

Since the first crystal structure of the Fe-only hydrogenase was published in 1998, intensive efforts have been spent on the structural and functional models of Fe-only hydrogenase due to its great capability of catalyzing the reduction of protons to molecular hydrogen at extraordinarily high rates.

自从1998年唯铁氢化酶的第一个晶体结构发表以来，由于它可高效地催化质子还原成氢气，其活性中心的结构和功能模拟受到了广泛关注。

An industrial procedure for the manufacture of hydroxylamine is based on the reaction of nitric oxide with hydrogen in the presence of a catalyst .

工业上制作羟胺的过程，其基础是硝酸与氢气在催化剂作用下的化学反应。

The effect of four-wave mixing and cascade SRS on multi-order Stokes generation and the influence of inert gas were discussed.

对四波混频和级联受激拉曼散射在氢气多级斯托克斯产生中的作用以及惰性气体对它们的影响进行了讨论。

In this work, hydrogen adsorption both in the tubes and the interstices of SWNTs has been investigated by DFT method.

本文采用DFT方法研究了氢气在SWNTs的管内和管隙中的吸附。

The research showed that temperature affected the isomerism most, then the pressure of hydrogen and the concentrations of catalyst.

结果表明，温度对氢化反应的异构化影响较大，氢气压力和催化剂浓度对异构化的影响相对较小。

Adsorption isotherms of hydrogen on the microporous zeolites A and X under supercritical conditions were modeled using lattice density function theory based on the three-dimensional Ono-Kondo equation.

采用基于三维Ono-Kondo方程的格子密度函数理论模型模拟了氢气在A和X型微孔沸石上的超临界吸附等温线。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。