含氧化合物

A simple estimation method for molar Gibbs free energy and enthalpy of formation for complex oxysalt minerals is proposed. Complex oxysalt minerals are divided into complex oxysalt minerals with water and complex oxysalt minerals without water. Complex oxysalt minerals without water can be considered as the composite of acidic oxides and alkaline oxides, so their molar Gibbs free energy or molar enthalpy of formation can be calculated by the summation of molar Gibbs free energy or molar enthalpy of formation of the acidic oxides and alkaline oxides which are combined into the complex compounds.

提出了一种复杂含氧盐矿物的摩尔生成Gibbs自由能和摩尔生成焓的简单估算方法，并把复杂含氧盐矿物分为不含水复杂含氧盐矿物和含水复杂含氧盐矿物，不含水复杂含氧盐矿物可以看作是酸性氧化物和碱性氧化物组成的物质，其摩尔生成Gibbs自由能或摩尔生成焓都可以看作是酸性氧化物和碱性氧化物复合成的化合物摩尔生成Gibbs自由能或摩尔生成焓之和。

Moreover, Oxygen-containing groups such as methoxyl, carbohydrates, carboxylic/carbonyl, were also very different among four HAs

另外不同腐殖酸之间，含氧结构单元如甲氧基、碳水化合物结构、羧酸/羰基官能团等的含量也明显不同。

Terpenoids had business with the life of humanbeings. The last twenty years developments of tricyclic diterpenoids were reviewed.Biologic activities of tricyclic diterpenes which had oxygenous guoups on the 1, 2 or 3 position were reviewed. The important applications and some methods of introducing oxygenous groups on these three positions in recent 20 years were also obtained.

萜类化合物与人类生活密切相关，本文简要介绍了近二十年来三环二萜类化合物的最新研究进展，综述了在C-1、C-2、C-3号位上具有含氧官能团的三环二萜类化合物的生物活性、重要应用，并报道了近二十年来在这三个位置上引入含氧官能团的一些常见方法。

The spectra of reaction of CO+H_2 with Ru-Co/SiO_2catalysts showed a band appearing at 1584cm~(-1),which has a good relationship to theactivity and selectivity for oxygenates in CO hydrogenation.

在前面的研究中，肖一丰收等人报导了担载的Ru一Co双金属原子簇催化剂在CO+H：反应中对含氧化合物的生成显示了很高的活性和选择性

Compared with the precipitated Mnpromoted catalyst, the addition of partial precipitated and binder Mn can enhance the selectivity of heavy hydrocarbons and olefins and restrain the formation of oxygenates.

与共沉淀Mn相比，部分共沉淀和黏结剂Mn提高了重质烃和烯烃的选择性，同时抑制了有机含氧化合物的生成。

After the cold plasma has supplied the necessary energy for the dissociation of CH4 and CO2, syngas, higher hydrocarbons and oxygenates can be easily produced.

等离子体可以提供足够能量以分解反应物，一旦反应物被解离，合成气、含氧化合物及高碳烃都很容易形成。

The results of CO hydrogenation showed that the existence of CNTs enhanced the activity of the Rh-Ce-Mn/Si02 catalyst. Under the specific reaction conditions, the CO conversion was 11.86% and the yield of oxygenates was 336.2g/ when the CNTs content was 10%.

CNTs促进的铑基催化剂的CO加氢活性明显提高，当CNTs添加量为10%时，一定条件下催化剂上含氧化合物的时空收率可达336.29/。

Historically, oxygenates like MTBE were developed in the 1970s as octane enhancers to replace toxic additives like lead, which were phased out of gasoline.

从历史上看，甲基叔丁基醚含氧化合物一样制定了在20世纪70年代的辛烷值促进剂，以取代有毒添加剂，如铅，这是逐步淘汰汽油。

In chapter 3, general reaction of a-hydroxy epoxides were introduced. We have developed a newly gold-catalyzed ring opening reaction ofα-hydroxy epoxides containing carbon cycle. We have disclosed the rule of ring opening reaction. And the plausible mechanism was proposed.

第三章：首先介绍了α-羟基环氧化合物的反应，其次介绍了一个新的金催化的含碳环骨架的α-羟基环氧化合物开环反应，总结了反应规律，提出了可能的反应机理。

Mainly composed of hydrocarbons, but also a small amount of oxygen, sulfur or nitrogen compounds.

主要由碳氢化合物组成，也有少量含氧、硫或氮的化合物。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！