研究了选择性氧化过程动力学及氧分压对氧化过程的影响。
Study on selective-oxidation kinetics and effect of oxygen partial pressure on oxidation process was conducted.
用氯化铵三氧化铬可以较高的产率将仲醇选择性氧化生成相应的酮。
The selective oxidations of secondary alcohols to corresponding ketones by ammonium chlorochromate were described in this paper.
同时她指出,总体上了解醇的选择性氧化对代用燃料的加工也是有帮助的。
She also points out that understanding selective oxidation of alcohols in general is relevant to the processing of alternative fuel sources.
阐述了甲烷选择性氧化制合成气过程的优点,并与其他转化工艺进行了比较。
A new synthetic route of methane to synthesis gas is compared with other conventional ones and the advantage is introduced.
二氧化氯具有很强的氧化能力,能选择性氧化木素和色素,而对纤维素较少损伤。
As ClO2 has great oxidizing power, it can choose to oxidizing lignin and coloring matter, but be less to carbohydrate.
实验结果表明,铬酸氢根季铵盐树脂是一种氧化醇为醛或酮的有效选择性氧化剂。
The experiment results show that CrO 4h - quaternary ammonium salt resin is an effectively selective oxidant for oxidation of alcohol to aldehyde of ketone.
探讨了铬酸及其行生物的氧化过程,并从结构上解释了铬酸衍生物的选择性氧化作用。
In this paper, oxidative procedure of chromic acid and chromic acid derivatives is described. The selective oxidation of chromic acid derivatives is explained by their structure.
铬降低了氧化膜内的铁含量,提高了初期氧化膜的保护性,从而促进选择性氧化铝膜的形成。
During the initial stage of oxidation, Cr decreased Fe content in the oxide scale, by which the selective oxidation of Al was promoted.
本发明属于氧化合成技术领域,公开了一种邻苯二酚类物质高选择性氧化和加氧开环的化学方法。
The invention belongs to the technical field of oxidation synthesis and discloses a chemical method for high-selectivity oxidation and oxygen-adding open loop of catechol substance.
选择性氧化醇类至羰基化合物是有机合成中的一个重要反应,其在精细化学品工业中具有关键的作用。
The Selective oxidation of alcohols to the corresponding carbonyl compounds is a key process in organic synthesis and plays a central role in the fine chemicals industry.
采用氢氧化钠和双氧水溶解羊毛制得可溶性角蛋白溶液,再对经高碘酸钠选择性氧化的棉纤维进行处理。
Keratin solution, prepared by dissolving the wool fibers in the sodium hydroxide solution and peroxide solution, was used to threat the cotton fibers oxidised by sodium periodate.
石油主要由还原型的碳氢化合物组成,因此它们的选择性氧化反应研究就成为化学工业中最重要的挑战性课题之一。
Petroleum primarily consists of reduced hydrocarbons, and their selective oxidation chemistry remains one of the foremost challenges in the chemical industry.
高碘酸钠选择性氧化后亚麻纤维大分子上生成了活性醛基,随着氧化程度的加深,纤维表面变得粗糙,结晶度不断降低。
The surface of flax fiber became rough and crystallinity decreased while increasing oxidized degree of flax fiber. The structure and properties of the proteinic oxidized flax fiber were studied.
采用选择性氧化剂和还原剂对俄罗斯直馏柴油中的硫醚类硫化物和噻吩类硫化物分别进行分离和富集,得到两者的浓缩液。
Sulfur compounds in Russian atmospheric gas oil were separated into thiophene and thioether compounds by the oxidation-reduction method using selective oxidant and reducing agent.
铝电解生产中,碳素阳极两组分(石油焦和沥青结焦)的活性差异带来阳极的选择性氧化,是造成碳素阳极过量消耗的主要原因之一。
Selective oxidation of carbon anode in aluminum electrolysis caused by reactivity difference between pitch coke and petroleum coke is one of the main causes for excess carbon consumption.
还研究了添加CTAB对化学氧化速度的影响,以及外加H_2O_2对阴极电合成选择性的影响。
The effect of additive CTAB on chemical oxidation rates and the effect of externally added H_2O_2 on selectivity of cathodic electrosynthesis have been investigated.
研究了一种五氧化二氮为硝化剂,选择性硝化缩水甘油合成缩水甘油硝酸酯的温和、高效方法。
A mild and high efficient method to prepare glycidyl nitrate by selective nitration of glycidol with dinitrogen pentoxide as the nitrating agent was developed.
对未经氧化的含黄铁矿高岭岩,选择性粉碎的目的是解离并分选出黄铁矿及其聚合体。
For pyritecontaining unoxidized kaolinite, the selective comminution aims at liberating and separating pyrite and its interlocking minerals.
按作者的结果提示这接合是对氧化的选择性的代谢过程。
According to the authors the results suggested that conjugation is an alternative metabolic process to oxidation.
为使含钛高炉渣中的钛组分富集于钙钛矿相中,基于选择性析出技术,需要对炉渣进行氧化处理。
In order to promote the enrichment of titanium component in perovskite phase, based on the technology of selective precipitation, the slag is supposed to be oxidized.
以D-(-)-果糖为手性源,经过丙酮保护、氧化、选择性脱保护、三氟酰化四步反应得到手性酮4。
Chiral ketone 4 derived from D-(-)-fructose was obtained by four steps reaction including protection with acetone, oxidation, deprotection selectively and trifluroacetylation.
目的研发一种通过增加一氧化氮(NO)释放从而选择性改善脉络膜血流的新型药物,用于治疗年龄相关性黄斑变性(amd)。
OBJECTIVE To synthesize a compound, which can specifically facilitate choroidal blood flow via increasing of nitric oxide (NO), for the treatment of age-related macular degeneration (AMD).
这说明选择性萃取技术可以广泛应用于自然水体采集的生物膜上铁、锰氧化物的萃取分离。
It shows that selective extraction technology can be applied broadly to the extraction and separation of manganese oxides and iron oxides in biofilms sampled from natural waters.
我们还发现,在催化氧化环境中连续使用的钼酸铋粒径会越来越长,对丙烯醛的选择性会相应提高。
The poor acrolein selectivity of this catalyst was improved by continuous use in the catalytic oxidation for making the particle size of the dispersed bismuth molybdate larger.
综述羧酸衍生物的烯醇盐氧化二聚成键的规律,重点是立体选择性的过程。
Stereoselective oxidative dimerization of the enolate of carboxylic acid derivatives is summarized focusing on the stereoselectivity of the process.
研究了SAS型固体酸和几种分子筛上氧化苯乙烯液相重排成苯乙醛的反应,考察了催化剂的活性、选择性和和稳定性。
The method of liquid phase rearrangement of styrene oxide to phenylacetaldehyde catalyzed by SAStype solid acids and molecular sieves was studied.
结果表明,氧化物类无机粒子对水和乙醇无选择性,炭粉对乙醇具有较好的选择性。
The results showed that inorganic particles have no selection on water and alcohol but the carbon powder has better selectivity on alcohol.
过氧化聚吡咯膜的膜厚对于多巴胺的选择性和灵敏度具有很重要的影响。
The thickness of OPPy film has an important effect on the sensitivity and selectivity for DA with respect to AA.
过氧化聚吡咯膜的膜厚对于多巴胺的选择性和灵敏度具有很重要的影响。
The thickness of OPPy film has an important effect on the sensitivity and selectivity for DA with respect to AA.
应用推荐