查询词典 hydrogen

Multi-hydrogen-groups on the catalyst make deep hydrogenation or hydrogenolysis take place. Adding promoters in the copper-substrate and zinc-substrate catalysts helps to formatting the multi-hydrogen-groups on the surface of them.

通过助催化剂的添加，在Cu基催化剂和Zn基催化剂上产生多氢吸附集团，可以改善催化剂深度加氢或氢解反应的性能，以有效地调控深度加氢反应。

A very strong acid, it forms ions of hydrogen or hydronium (H+ or H3O+), hydrogen sulfate (HSO4-), and sulfate (SO42-).

硫酸是一种强酸，能生成氢离子或水合氢离子(H3O+)、硫酸氢根离子(HSO-4)以及硫酸盐(SO2-4)。

A really effective hydrophobia catalyst with stability and high activity is the key to hydrogen isotope exchange reaction between hydrogen gas and liquid w...

本研究制备了Pt-SDB和Pt-C-PTFE两类憎水催化剂，催化剂的活性组分均采用铂。

The isotope exchange reaction between hydrogen and water by hydrophobia catalyst is an effective method to separate hydrogen isotope because of its mild operating conditions.

该项技术与商业利益密切相关，各国催化剂的具体制备工艺都是保密的，因此，必须自力更生，制备出适合工程上使用的高效、稳定的憎水催化剂。

The inhibiter is much sensibility on formation water, solid y inanimate matter, power of hydrogen of oil, so power of hydrogen of oil and other element should be controled when the inhibiter is used.

该抑制剂对地层水、固体无机杂质、原油的酸碱性比较敏感，使用时应注意控制原油体系的酸碱度和地层水、固体无机杂质等抑制剂的影响。

Changes of internal pressure, electrical resistance, internal stress and temperature of hydrogen-storage-metal electrodes during hydrogen charging.

解释了实验上发现的电极充氢过程中出现的内气压、电阻、内应力、温度等变化规律。

Ink system of dissolved hydrogen power and intertexture substrate dissolved hydrogen power too.

油不朱编制的凝固氢键辛与编织袋承印物的凝固氢键辛出入太不小。

Molecular configurations in LB films undergo change from keto form to zwitterion assurface pressures increase,companied by intermolecular hydrogen bonds decreaseand intramolecular hydrogen bonds increase.

在LB膜中，随表面压增加，分子间氢键减少，分子内氢键增加，SBC18头基构型在转折区发生醌式→双性离子构型转变。

When surface pressures are lower than the turnover(5～30mN/m),intermolecularhydrogen bonds were formed with keto form and phase transition was higher ca.60℃;most of SBC18 formed intramolecular hydrogen bonds companied withzwitterion form and phase transition was lower ca.48℃ while at surface pressurehigher than the turnover(≥45mN/m),which is caused by the different interchaininteraction arising from various hydrogen bonds for SBC18 LB film deposited atdifferent surface pressures.

低于相应π-A等温线转折(5～30mN/m)时，以分子间氢键为主，头基主要以醌式构型存在，相变温度较高(≈60℃)；高于转折(≥40mN/m)时，以分子内氢键为主，头基主要以双性离子构型存在，相变温度较低(≈48℃)。

The catalysts were prepared by impregnation and precipitation method, and the active carbon,γ-Al2O3, silica and kieselguhr were selected as the carriers of catalyst. the effects of reaction conditions, such as reaction temperature, types of solvents, and types of hydrogen donors were investigated, It was found that the Pd/C catalyst was the best one, and its proper reaction conditions were also obtained as follow: sodium formate as hydrogen donor, water as solvent, reaction temperature of 70℃ and reaction time of 2.5h.

以活性炭、γ-Al2O3、硅胶和硅藻土等为载体，分别采用浸渍法和沉淀法制备了催化剂，对于反应温度、溶剂及氢供体的种类等反应条件的影响进行了研究，发现以沉淀法制备的Pd/C催化剂是对转移加氢最有效的催化剂，初步确定了适宜的反应条件为以甲酸钠作氢供体、水作溶剂及70℃反应2.5h等。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。