查询词典 methanol

Methods: The protein and other impurity in the sample were precipitated by zinc acetate and potassium ferrocyanide after dipping of the sample. N,N-dichlorocyclohexylamine derived from sodium cyclamate by sodium hypochlorite in the filtrate was extracted by hexane. The HPLC separation was carried out with a phenomenex Gemini-C18 column using acetonitrile-water(7+3) or methanol-water (8+2) as mobile phase and detected by UV monitor at 314 nm. External standard method was used for quantification.

样品中甜蜜素浸提后，用乙酸锌和亚铁氰化钾试剂沉淀蛋白质等干扰杂质，过滤，用次氯酸钠将样品溶液中的甜蜜素转化为N，N-二氯环己胺经正己烷萃取后，在phenomenex Gemini-C18柱上，以乙腈－水(7+3)或甲醇－水(8+2)为流动相进行分离，HPLC-UV检测器在314 nm测定，外标法定量。

In this paper,the phase diagram of the aqueous solution system of potassium chloride and ammonium sulphate is calculated,analyzed and compared with that of such aqueous solution system into which certain amount of methanol is added,and the yield of the reaction is caculated.

硫酸钾是一种优质无氯钾肥，由氯化钾与硫酸铵复分解制备硫酸钾是十分重要的生产方法之一，其反应可表示为2KCl+(NH4)2SO4=K2SO4+2NH4Cl该反应氯化钾转化成硫酸钾的转化率受到各组分在体系中的溶解度限制而较低[1，2]。

If users need to protect the atmosphere workpiece reduce oxidation, can be installed in a stainless steel lid three Pentanes injection, infusion methanol or kerosene, to produce simple protective atmosphere, in the lower part of the furnace installation of nitrogen gas pipeline, nitrogen-protection or washed out into the flammable gas to prevent an explosion accident.

如用户提出需要气氛保护使工件减少氧化，可在炉盖上安装有不锈钢三头油注器，滴入甲醇或煤油，以产生简易保护气氛，在炉膛下部安装有氮气进气管道，可通入氮气保护或冲散可燃性气体，以防发生爆炸事故。

Reduce oxidation, can be installed in a stainless steel lid three Pentanes injection, infusion methanol or kerosene, to produce simple protective atmosphere, in the lower part of the furnace installation of nitrogen gas pipeline, nitrogen-protection or washed out into the flammable gas to prevent an explosion

如用户提出需要气氛保护使工件减少氧化，可在炉盖上安装有不锈钢三头油注器，滴入甲醇或煤油，以产生简易保护气氛，在炉膛下部安装有氮气进气管

Some technologies,including olefines from methanol,oxalates and ethylene glycol from carbon monoxide,carbon dioxide-based polymers,chemicals from the syngas prepared by biomass gasification,acetone and butanol by fermentation,and chemicals from acetylene,ethanol,glycerol,furfural,hydroxymethyl furfural and starch,were reviewed.

包括甲醇制烯烃，一氧化碳制草酸酯和乙二醇，乙炔化学品，二氧化碳聚合物，生物质气化合成化工产品，发酵法生产丙酮、丁醇，乙醇衍生化工产品，甘油合成化工产品，糠醛和羟甲基糠醛合成化工产品，淀粉合成化工产品等重要的石油替代化学品生产技术被介绍。

Experience of process plants could include gas processing, ammonia, methanol, hydrogen, olefines sulphur, polyethylene, and polypropylene.

具备工艺装置经验包括天然气工艺、氨、甲醇、氢、烯烃、硫、聚乙烯、聚丙烯等。

In esterification of 2,6-NDA obtained from Henkel reaction of 1,8-naphthalenedicarboanhydride catalyzed non-cadmium catalyst zinc carbonate, the effect of process parameters like esterification catalyst and its amount used, reaction temperature and time, and methanol/anhydride molar ration, etc, was investigated.

在碳酸锌催化和二氧化碳气氛中1，8-萘二甲酸酐于300～340℃反应3～4小时，可以较高收率地获得2，6-萘二甲酸粗品，收率达到62％，该产物可以直接用于合成双酯的酯化反应中。

Meanwhile supersonic treatment was conducted to make the diesel/methanol blend well-mixed.

本文利用乳化、增溶原理对柴油甲醇的混合做了初步的研究。

The reaction conditions of methanol dehydrogenation to water-free formaldehyde was studied in a 16mm diameter fixed bed ceramic tube reactor,using Na_2CO_3 as catalyst,which was prepared by different ways.

在一个内径为16mm的固定床陶瓷管反应器中，研究了用不同方法制备的碳酸钠催化剂催化甲醇脱氢制无水甲醛反应的工艺条件。

According to the steps, the tube-shaped cathode of a direct methanol fuel cell can be obtained.

依以上步骤，即制得直接醇燃料电池管状阴极。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。