h3po4

A new acid fluid of H3PO4 / HF for acidization of sandstone is presented .

介绍了一种用于砂岩酸化的缓速低伤害酸液体系&以磷酸/氢氟酸为主体的酸液体系，即A-924酸液；

Acetonitrile-0.4 % H3PO4 ( 13 ∶ 87 ) was the mobile phase .

乙腈-0.4%磷酸溶液（13∶87）；

The thickness of oxide films formed in H3PO4 solution is varied from 50 nm to 80 nm ;

在H3PO4溶液中形成的氧化膜厚度随氧化时间变化为50～80nm；

A defect selective etching system using molten KOH and hot phosphoric acid ( H3PO4 ) has been set up .

搭建了一套使用熔融氢氧化钾与热磷酸的缺陷选择性腐蚀系统。

Different amounts of H3PO4 or KOH were impregnated on the manganese oxides to obtain acid / base modified catalyst .

然后浸渍不同量的H3PO4或KOH于锰氧化物上，得到了改性后的催化剂。

Inorganic adhesive H3PO4 CuO is presented for replacing phenol aldehyde resin adhesive in preparing diamond grinder .

采用无机粘结剂H3PO4CuO取代酚醛树脂粘结剂，制作树脂磨具。

The developed bath lowers the dosage of H3PO4 and it strengthens the protection for Mg substrate after oxide film is removed .

该酸洗液降低了磷酸的用量，增强了酸洗过程中对镁合金去除氧化膜后的保护。

The passivating films of zinc plating were modified by adding H3PO4 , SiO2 , Ti (ⅳ) compound in low chromate solution .

采用在低铬钝化液中添加H3PO4，SiO2，Ti（Ⅳ）盐对钝化膜进行改性；

The preparation of alkene ketone from hydroxide ketone dehydrogenation was studied , H3PO4 was selected as the super catalyst .

研究了羟酮酸性脱水制备中间产物烯酮（3-庚烯-2-酮）的相关工艺条件，得出H3PO4为脱水反应的优良催化剂。

Biological Phosphorus Removal Granular Sludge and Denitrifying Phosphorus Uptake ; Phosphate : Any of numerous chemical compounds related to phosphoric acid ( H3PO4 ) .

生物除磷颗粒污泥及反硝化聚磷试验研究磷酸盐和磷酸酯：与磷酸有关的许多化合物的统称。

The main parameters in the process are similar with that of wet H3PO4 acid process , so we can borrow part of the research conclusions from wet H3PO4 acid process .

过程主要参数同湿法磷酸的生产相似，故可以部分借用湿法磷酸浸取过程的研究结论。

If the ( H3PO4 ) - 4 is chosen as catalytic promoter and triethylamine ( TEA ) added , a higher yield will be obtained .

若选择（H3PO4）n作催化剂，三乙胺（TEA）为助催化剂，产率87.5%。

Phosphate : Any of numerous chemical compounds related to phosphoric acid ( H3PO4 ) . Study on Synthesis of Potassium Titanates by KOH Sub-molten Salts Method

磷酸盐和磷酸酯：与磷酸有关的许多化合物的统称。氢氧化钾亚熔盐法合成钛酸钾的研究

From the results of orthogonal test , we knowed that the composition of mixture ( ZnO and H3PO4 ) and the intensity of sulfitation were the key factors .

低温澄清与亚硫酸法结合的实验研究，通过正交试验表明：混合溶液的组成、硫熏强度是主要的影响因素。

A new catalytic spectrophotometric determination of trace nitrite based on its catalytic oxidation of litchi chinese red with sodium perborate on heating and in the presence of H3PO4 has been developed .

基于在加热和H3PO4存在下，NO2-催化过硼酸钠氧化荔枝红色素的反应，首次提出一种测定痕量亚硝酸盐的催化光度法。

Using chemical etching , it was found that the relation between the etching rate R and the concentration r in H3PO4 solution can be roughly described asR ≌γ (γ≤ 50 % ) .

在化学蚀刻方法中，发现腐蚀液H3PO4/H2O的腐蚀速率R与浓度γ的关系可粗略地描述为R（？）

The result of cell differentiation test indicated that the alkaline phosphatase ( ALP ) activity of mixture group was significantly reduced than the cp Ti group and H3PO4 group after 4 days cell culture .

细胞分化试验结果表明，除在4d时混合液组碱性磷酸酶活性较纯钛组及磷酸组显著性降低外，其余各组间无显著性差异。

It is based on the decrease in absorbance of the reaction eriochrome cyanine R with potassium bromate in dilute H3PO4 which is catalyzed by nitrite .

它基于在稀磷酸溶液中，依来铬青R与溴酸钾的反应受亚硝酸根催化而使吸光度降低。

The best technology for preparing activated carbon with H3PO4 microwave irradiation was determined as : microwave power was 460 w , activation time was 10 min , H3PO4 solution concentration was 50 % .

确定了微波辐照磷酸法制备活性炭的工艺条件：微波功率460W，活化时间10min，磷酸质量分数50%。

Since the middle layer of silane hydrolyzes continuously , immobilized biomolecules on the Ti-O film are unstable by the method of silanization via chemisorption of H3PO4 interface . 2 .

通过磷酸化学吸附和硅烷化方法在薄膜表面固定的生物分子层不稳定，主要的原因是中间连接层的硅烷化表面不断水解的原因。

The doped samples , on which no H3PO4 was found to precipitate during storage under a condition of R.H.40 % for a month , exhibited no apparent changes in proton conductive performances .

掺杂样品在相对湿度40%条件下放置一个月，没有发生H3PO4渗出现象，其质子传导性能基本不变。

The optimum condition of dilute NaOH extraction 、 H3PO4 precipitation of soybean protein and desalting with ion exchange are determined through repeated experiment . And then , the contents of sirup produced are analysed .

经反复实验，初步确定了由稀NaOH溶液浸取、H3PO4调节pH值沉淀蛋白和离子交换脱盐等过程的工艺参数，并测定了成品糖浆的成分。

Hydroxyapatite ( HA ) powder was synthesized by Sol-Col method from Ca ( OH ) 2 and H3PO4 . The HA powder was coated with a 304L stainless steel powder using mechanical mixing method .

以Ca（OH）2和H3PO4为反应物，通过溶胶-凝胶法制备了羟基磷灰石（HA）粉体；

Through the analysis of TG-DSC curve , we studied the influence of temperature and the additives ( H2SO4 , HCL , NaOH , H2O2 , H3PO4 ) on the performance of bamboo thermal decomposition .

通过TG-DSC曲线分析，研究了温度和H2O2、H2SO4、H3PO4、HCL、NaOH等添加剂对毛竹材热解性能的影响。

The best technology condition on preparation for sewage sludge-based activated carbon with phosphoric acid-microwave method was obtained : microwave power was 350W , radiation time was 260s , H3PO4 solution concentration was 40 % .

得出磷酸微波法制污泥炭的最佳条件为：微波功率480W、辐照时间260s、磷酸浓度40%。

A kinetic spectrophotometric method for the determination of hydrogen peroxide was developed , based on the catalytic oxidation of indigo carmine with H2O2 in the presence of Cu ( II ) in pH4.0 H3PO4 medium .

基于在pH4.0H3PO4介质中，铜（II）对H2O2氧化靛蓝胭脂红褪色反应的催化作用，建立了一种在常温条件下测定H2O2的催化光度分析新方法。

The etching solution H3PO4 / H2O2 did not have a " coattail " structure , but the sidewall slope is too large ( about 45 °), and the rate is too slow , for process requirements are more demanding .

而H3PO4/H2O2溶液的刻蚀形貌没有产生燕尾结构，但侧壁坡度过大（约45°），且腐蚀速率太慢，对光刻等工艺的要求也更加苛刻。

With designed orthogonal tests , the effects of temperature , concentration of Ca ( OH ) 2 , feeding rate of H3PO4 and amount of sodium dodecylbenzene sulfonate ( SDBS ) on the morphology and properties of HAP were investigated .

通过正交实验法，研究了反应温度、Ca（OH）2浓度、H3PO4滴加速度、表面活性剂十二烷基苯磺酸钠（SDBS）的加入量等各因素对反应产物羟基磷酸钙结晶形态与尺寸的影响。

Uniformly carbon spheres can be obtained by hydrothermal process in the presence of the H3PO4 and rice husk is raw mateial . This method possibly will have the better economic efficiency and also has a bigger profit to the environmental protection . 1 .

廉价的农作物废弃物稻壳为原料，以磷酸为催化剂来水热碳化，获得较为均匀的碳球，这种方法将可能产生较好的经济效益和对环境保护也有较大益处。

The systems were prepared from wooden-dust or bamboo-dust by use of H3PO4 as an activating agent and transition metals Ni-Cu-K or Mn-Cu-K as catalysts and a set of the best preparation condition was verified by orthogonal experiment .

实验以木屑、竹屑为原料，浸渍过渡金属配伍Ni-Cu-K和Mn-Cu-K，用磷酸化学活化法制备活性炭催化氧化体系，研究了其制备条件的最优化，并测定了体系性能。