查询词典 carbonate acid

By using phenolphthalein and methyl orange as indicators, free alkali, zinc and sodium carbonate were titrated with hydrochloric acid and zinc was titrated with EDTA.

提出了EDTA络合滴定和酸碱滴定联合测定碱法炼锌中含锌碱性溶液中游离碱、锌和碳酸钠的新方法。

With the increase of catalyst dosage, the desulfurization rate decreased using zinc oxide or manganese carbonate as oxidation catalyst, but first increased and then decreased using boric acid as the catalyst.

使用氧化锌或碳酸锰催化剂时，随着催化剂用量的增加，汽油脱硫率总体呈现降低的变化趋势。

Different from many other researches the Henkel-Esterification process was studied here which starts from 1,8-naphthalenedicarboanhydride. In the Henkel reaction of 1,8-naphthalenedicarboanhydride to 2,6-naphthalenedicarboxylic acid (abbreviated as 2,6-NDA) non-cadmium catalytic system was used. In atmosphere of carbon dioxide 1,8-naphthalenedicarboanhydride can be effectively converted to 2,6-NDA in the temperature range of 300~340℃ with zinc carbonate as catalyst and the yield of 2,6-NDA can reach more over 62%.

和国内外绝大多数研究不同的是，论文结合公司自身的原料资源优势和长远规划，提出了从工业苊深加工产品—1，8-萘二甲酸酐出发，经过非镉系催化剂催化转位，然后再进行非酸催化酯化合成2，6-萘二甲酸二甲酯的工艺路线，并对工艺过程中涉及的成盐过程、催化转位反应、酯化反应等进行工艺参数的重点考察，对合成产物进行分析确证。

Excellent property scope: for wood pulp, Reed, American pulp waste slurry, and so on all kinds of culture in the production of paper, paperboard and newsprint and fruit sizing of paper and requirements of wrapping paper, over a wide pH (7-9), wide, the most suitable manufacturing conditions are pH (7.5-8.5) cannot use calcium carbonate filler, could replace traditional Rosin Sizing and AKD acid neutral sizing.

性能优良适用范围广：适用于木浆、苇浆、美废浆等浆种生产的各种文化用纸、板纸、新闻纸、果袋纸和要求施胶的包装纸等，可在较宽pH值（7-9）范围内应用，最适宜的抄造条件为pH值（7.5-8.5）能使用碳酸钙填料，可取代传统的松香酸性施胶和AKD中性施胶。

Under the experimental conditions, alum, alum/sodium silicate, sodium silicate/hydrochloric acid, zinc chloride, and sodium silicate/zinc chloride are effective to inhibit the dissolution of precipitated calcium carbonate in distilled water with pH value 5.85, and the pH values of the suspensions decrease.

硫酸铝、氯化锌、硅酸钠/稀盐酸可对PCC在pH值为5.95的醋酸/醋酸钠缓冲溶液中的溶解性产生较弱的抑制作用，硅酸钠/氯化锌的溶解抑制作用相对较为显著，滤液钙离子浓度可降低30％左右。

Acid fracturing is an important tool to increase reserves and production of marine carbonate rock reservoir in northeastern Sichuan Basin.

酸压改造是川东北地区海相碳酸盐岩储层增储上产的重要手段。

In order to utilize the abundant resources of crude salt,this article provided a process for the preparation of sodium bicarbonate by double decomposition method with sodium chloride and ammonium acid carbonate as raw materials.

为了利用中国丰富的原盐资源，采用氯化钠和碳酸氢铵复分解法制备小苏打。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。