碳酸

Their behaviors on the synthesis of diphenyl carbonate from phenol and CO2 in CCl4 were examined.

以二氧化碳、苯酚和碳酸钾为原料，在四氯化碳溶液中反应合成碳酸二苯酯时，锌负载催化剂具有较高的催化活性和DPC选择性。

Field obserbation and laboratory study indicate the main type of rock alterationwere K-feldsparization, biotitization, sericitization, silication, epidotization,chloritization and carbonatization. From early to late, these alteration could dividedinto three epochs: early-stage was K-feldsparization-biotitization, middle-stage wasquartzification -sericitization, late-stage was silication, carbonatization, epidotizationand chloritization.

通过野外观察及室内研究表明，围岩蚀变类型主要有钾长石化、黑云母化、绢云母化、硅化、绿帘石化、绿泥石化和碳酸盐化，从早至晚可分为三期：早期为钾长石-黑云母化；中期为石英-绢云母化；晚期为硅化、碳酸盐化和绿泥石、绿帘石化。

The process of diethyl carbonate synthesis by transesterification reaction of ethanol with ethylene carbonate,coproducing useful ethylene glycol was investigated using catalyst of sodium ethylate .

研究了以乙醇钠为均相催化剂，碳酸乙烯酯和乙醇酯交换合成碳酸二乙酯同时联产乙二醇的过程。

The experiment system of caustic soda in the process of Glauber's salt key point is the inclusion of sodium bicarbonate, sodium bicarbonate accession greatly improved the conversion rate of caustic soda.

本实验在芒硝制烧碱过程中的关键点是加入了碳酸氢钠，碳酸氢钠的加入大大提高了烧碱的转化率。

The main products are: calcium sulfate / calcium nitrate / calcium carbonate / copper sulfate / chloride, copper / zinc sulfate / nitric acid zinc / zinc chloride / potassium sulfate / potassium chloride / potassium bromide / potassium aluminum sulfate / potassium dihydrogen phosphate / 2 of potassium hydrogen phosphate / sodium bromide / sodium chloride / sodium nitrate / sodium fluoride / trisodium phosphate / sodium dihydrogen phosphate / disodium hydrogen phosphate / crystallization of sodium carbonate / anhydrous sodium carbonate / aluminum sulfate / nitrate aluminum / crystallization of aluminum chloride / aluminum hydroxide / nitrate Fe / hydrobromide / oxalic acid / boric acid / citric acid / barium chloride / Azone / magnesium sulfate / magnesium nitrate / magnesium chloride / ammonium chloride / ammonium sulfate / Bifluoride ammonium / ammonium aluminum sulfate / ferrous ammonium sulfate / ammonium dihydrogen phosphate / diammonium hydrogen phosphate / bromide / tetrabutylammonium bromide / chloride, nickel / nickel nitrate / sulfate nickel / cadmium chloride / cadmium sulfate / nitrate Cadmium / Cadmium Carbonate / Strontium / strontium nitrate / sulfuric acid manganese / manganese chloride / 50% manganese nitrate solution / stannous chloride / zinc chloride, such as crystallization of the four largest packing of chemical reagents AR and CP level.

主要产品有：硫酸钙/硝酸钙/碳酸钙/硫酸铜/氯化铜/硫酸锌/硝酸锌/氯化锌/硫酸钾/氯化钾/溴化钾/硫酸铝钾/磷酸二氢钾/磷酸氢二钾/溴化钠/氯化钠/硝酸钠/氟化钠/磷酸三钠/磷酸二氢钠/磷酸氢二钠/结晶碳酸钠/无水碳酸钠/硫酸铝/硝酸铝/结晶三氯化铝/氢氧化铝/硝酸铁/氢溴酸/草酸/硼酸/柠檬酸/氯化钡/氮酮/硫酸镁/硝酸镁/氯化镁/氯化铵/硫酸铵/氟化氢铵/硫酸铝铵/硫酸亚铁铵/磷酸二氢铵/磷酸氢二铵/溴化铵/四丁基溴化铵/氯化镍/硝酸镍/硫酸镍/氯化镉/硫酸镉/硝酸镉/碳酸镉/碳酸锶/硝酸锶/硫酸锰/氯化锰/50%硝酸锰溶液/氯化亚锡/结晶四氯化锌等大包装化学试剂的AR和CP级别。

Study on the synthesis of ultrafine powder of lead carbonate.

采用均匀沉淀法合成碳酸铅，研究反应温度、时间、反应物浓度、反应物配比对碳酸铅收率的影响。

The synthesis process of light magnesium carbonate from low-grade magnesite by carbonation method is described.

利用低品位的菱镁石为原料，采用碳酸法生产工艺合成轻质碳酸镁。

And using basic magnesium carbonate by synthesizing as raw materials, the condition of calcining magnesium oxide was studied in this paper.

文中探讨了制备碱式碳酸镁的工艺条件并进行了优化，研究了利用自制碱式碳酸镁产品烧制氧化镁的过程。

All the data onside showed that this drilling fluid fulfilled the requirements of drilling operations in Chuandong area.

为此，我们对川东地区的碳酸根和碳酸氢根污染钻井液的现象进行了一系列实验研究。

Keywords diethyl carbonate;phenol;phenetole;potassium carbonate;active carbon;ethylation;solid base catalyst

碳酸二乙酯；苯酚；苯乙醚；碳酸钾；活性炭；乙基化；固体碱催化剂

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。