查询词典 zinc carbonate

At different heating rates, thermal decomposition process and thermal decomposition kinetics of basic zinc carbonate are researched by thermal analysis method in nitrogen atmosphere.

在不同升温速率条件下，用热分析法研究了碱式碳酸锌[2ZnCO33Zn2]在氮气氛中的热分解过程与热分解动力学。

Basic Zinc Carbonate 800 tons.

碱式碳酸锌800吨。

The results, obtained by chemical analysis, Xray diffraction and scanning electron microscopical observation of the process concerned and products, show that the process flowsheet is simple and can be used to prepare basic zinc carbonate for producing activated zi...

结果表明：该工艺过程简单，得到可制备活性氧化锌的碱式碳酸锌；磁场作用对碱式碳酸锌的结构及热解产物的粒度产生了有利于活性氧化锌制备的影响。

Nanosized zinc carbonate prepared by the method of microemulsion has shown good disper- sion, narrow distribution and light agglomeration.

分别改变表面活性剂和反应物的浓度，制备出了1号、2号和3号纳米碳酸锌。

The liquor is treated by twostep basicity modulation and magnetic field effect, obtaining basic zinc carbonate.

利用化学分析、X衍射和扫描电镜对有关过程及产物进行检测。

To estimate the activation energy of the decomposition, the Friedman isoconversional method was applied. The activation energy was calculated as a function of conversion. The results confirm that more than one reaction occurs in the decomposition of basic zinc carbonate.

采用Friedman法对实验数据进行分析，结果表明，反应的活化能数值随着分解率的不同而变化，由此推断该反应是由多步反应组合而成的，其平均表观活化能E。

Taking ZnSO47H2O and NH4HCO3 as raw materials and mixing them with a certain amount of MgSO47H2O, the powder of nano-crystalline alkali zinc carbonate was prepared.

以ZnSO47H2O和NH4HCO3为原料，掺入一定质量的MgSO47H2O，制备纳米微晶碱式碳酸锌粉体。

Hydrochloric acid ; Metal recovery ; Basic zinc carbonate ; Magnetic field

盐酸；金属回收；碱式碳酸锌；磁场

Dynamic kinetic analyses were performed for the thermal decomposition of basic zinc carbonate by means of TG and SDTA measurements in CO2. The thermal behavior and the kinetics of the decomposition were studied.

运用TG／SDTA同步分析仪，研究了碱式碳酸锌在流动二氧化碳气氛中的热分解过程及热分解动力学。

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。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。