查询词典 acid process

Poly/montmorillonite/2-Carboxyethyl phosphinic acid (PET/MMT/CEPP) nanocomposites were prepared through direct-esterification process by adding reactive flame retardant before esterification, and organic MMT was added before polycondensation.

采用直接酯化法，将共聚型阻燃剂羧乙基苯基次磷酸和对苯二甲酸以及乙二醇混合后酯化，在酯化产物中加入经过有机改性的蒙脱土，缩聚制备了阻燃聚酯／蒙脱土纳米复合材料(PET/MMT/CEPP)。

UV-Vis spectra show that the absorbance values at characteristic wavelengths of the multilayer films increase almost linearly with the number of chitosan/PTA bilayers, suggesting that the deposition process is regular and highly reproducible from layer to layer. XPS and FTIR spectra confirm the incorporation of chitosan and PTA into the films. AFM images indicate that the surface of the multilayer films is rough. The result of CV shows that the multiplayer films maintain good electrocatalytic activity of phosphotungstate acid.

UV-Vis结果显示多层膜在特征吸收峰处的吸光度数值随膜双层数增加逐渐增大，呈良好的线性关系，表明多层膜是均匀组装的；XPS和FTIR结果证实了壳聚糖和磷钨酸被组装到膜上，AFM图形显示膜表面有一定的粗糙度，CV结果说明多层膜保留了磷钨酸的电化学性质。

The process parameters of the separation and purification of shikimic acid from Picea meyeri with ion exchange resin were established.

建立了离子交换树脂分离纯化白扦中莽草酸的工艺条件和参数。

This paper presents experimental studies on the treatment of picric acid wastewater by using sulfonated coal sorption-micrbelectrolysis-biochemical process.

介绍了用磺化煤吸附－微电解－生化法处理苦味酸废水的实验研究。

Evolution of permeation flux during the ultrafiltration process and variations in sensory characteristics, peptide molecular weight distribution and amino acid composition of Pinctada martensii protein enzymatic hydrolysates before and after ultrafiltration treatment were evaluated in the present study.

研究了马氏珍珠贝肉蛋白酶解液在超滤过程中膜通量的变化及超滤前后感官评价、肽分子量分布以及氨基酸的变化，对超滤膜的选择性及分离效果进行了评价和分析。

Considering the low corrosiveness of polyphosphoric acid to the stainless steel,the combustion chamber,which was made of stainless steel without inner lier,was used in the two-step method process.

利用多聚磷酸对不锈钢的低腐蚀特性，在二步法工艺中采用无衬里不锈钢燃磷塔。

The resultant of dehydration of both sodium silicate and polysilicic acid is silicic gel. The sodium cations have double impact on the process.

硅酸钠脱水硬化和纯硅酸脱水硬化都生成硅凝胶，钠正离子的存在有正负二重影响。

It is concluded that ions are condensed gradually in the process of heat treatment polytungstate acid,the symmetry of the WO6 octahedral is improved and the strength of the WOWbond is increased.

TG-DTA和IR分析结果表明，随着热处理温度的提高，薄膜中多聚钨酸离子进一步缩合，WO6八面体对称性逐渐增强。

This project is to make aeroconcrete through the high temp and high pressure to make it into poriferous AAC with the tail quartz sand as the main material, the cement and lime as agglutinant featuring wind block, warm-keeping, sound/heat insulation, water/humidity resistance, antifreezing, vibration proof, acid/alkaline resistance, partial load bearing, large size and weight light, shape formed optionally, moreover, it is a new building material of mast processing possibility since it can be sawed, drilled and nailed so as to save masonry sand and slurry and quicken the process and simplify the operation.

本项目加气混凝土主要是以石英尾砂为基础，以水泥和石灰为胶和剂，经高温高压养护而成的多孔状AAC。

The process of three-step countercurrentleaching is presented, in the first leaching step Fe as leading impurity inthe matte is leached priorly, Co and Ni are enriched in the residue of thefirst step and then are leached in the second leaching step with a lowconcentration acid, the residue from the second step containing hardleaching Fe, Co and Ni are leached with a high concentration sulfuricacid in the third step, and Cu stays in the final resude, the leachate of thethird leaching step is diluted and divided into two parts as the leachantsto the first and second leaching step.

在此基础上，提出了三段逆流选择性浸出技术：即第一段用低酸优先浸出钴冰铜中杂质铁，将钴镍富集到第一段的浸出渣中，第二段再用低酸浸出渣中部分钴镍，第三段用高酸浸出第二段渣中难浸的钴镍铁，将铜留在最终的浸出渣中，第三段浸出液经稀释，分流，分别返回至第一段，第二段作低酸浸出介质。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。