The process for preparating chromium trioxide from sodium dichromate by reduction of ammonium salt is simple and the product has high quality and can be up to chemical regent grade.

1、

The end point of the titration is confirmed by the forever stop end point method. The content of Cr_2O_3 in chromium mineral is calculated based on the electrolyse law.

以Fe2+对Cr2O27-进行库仑滴定，采用永停终点法确定库仑滴定终点，根据电解定律计算三氧化二铬含量。

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2、

The reduction extent and rate increase with temperature, however the temperature is lower at the same reduction extent in pure Cr_2O_3 reduction.

在管状炉和感应炉中对不锈钢粉尘含碳球团进行加热还原，分析得出其还原度和还原速率与纯三氧化二铬相比达到相同还原程度的温度较低；

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3、

Raman Scattering of Nanoscale Chromic Oxides

纳米三氧化二铬的拉曼散射

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4、

Preparation of cr_2o_3 from cr(ⅵ) wastewater

从含铬（Ⅵ）废水制备三氧化二铬

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5、

Chromium Oxide was Produced from High-carbon Ferrochrome Alloy Powder

以高碳铬铁合金粉为原料制备三氧化二铬

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6、

A method of preparation of the standard samples is proposed.

文中提出了一种以三氧化二铬为基准物料制备含铬标准样品的新方法。

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7、

Determination of Cr_2O_3 in Chromium Slag& Chromium Slag Blending Cement

铬矿渣及掺有铬矿渣水泥中三氧化二铬的测定

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8、

LiMn_0.85Cr_0.15O_2 was synthesized with lithium hydroxide, electrolyte manganese dioxide, chromium trioxide by solid state synthesis method at high temperature.

研究了以一水氢氧化锂、电解二氧化锰EMD、三氧化二铬为原料，直接高温固相合成LiMn（0.85）Cr（0.15）O2。

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9、

The process also produces lots of chromium oxide and sodium sulfate, consequently reduce the process cost.

该工艺同时副产大量三氧化二铬和硫酸钠，降低了2-吡啶甲酸铬的生产成本。

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10、

The types, technology and characteristics of the "green" nitration for preparing nitric esters using dinitrogen pentoxide as the nitrating agent were introduced.

前言：简要介绍以五氧化二氮为硝化剂制备硝酸酯的“绿色”硝化反应的类型、工艺及特点。

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11、

A mild and high efficient method to prepare glycidyl nitrate by selective nitration of glycidol with dinitrogen pentoxide as the nitrating agent was developed.

研究了一种五氧化二氮为硝化剂，选择性硝化缩水甘油合成缩水甘油硝酸酯的温和、高效方法。

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12、

Investigation on Nitration of Monosubstituted Benzene with Nitrogen Pentoxide

五氧化二氮对一元取代苯的硝化研究

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13、

Ab Initio Study of the Reaction between N_2O_5 and H_2O

五氧化二氮和水反应的从头算研究

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14、

Clean Nitrating Agent Dinitrogen Pentoxide and Its Application in Nitration

绿色硝化剂五氧化二氮及其在硝化反应中的应用

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15、

Nitration of Toluene with a Clean Nitrating Agent-Dinitrogen Pentoxide

绿色硝化剂五氧化二氮对甲苯的硝化研究

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16、

This paper briefly recounts that a new leather fatliquoring agent was synthesized by reacting castor oil and modified castor oil acid with P2O5 at65~ 75 ℃.

以蓖麻油和改性后的蓖麻油醇酸为主要原料，与磷酸化试剂五氧化二磷在65～75℃进行酯化反应，合成了一种具有较好加脂作用的磷酸酯加脂剂。

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17、

A series of new type phosphate amphoteric surfactants were synthesized by using ethylene glycol, epichlorohydrin, alkyl tertiary amine and phosphorus pentoxide as raw materials.

以乙二醇、环氧氯丙烷、烷基叔胺和五氧化二磷为原料，合成了一种磷酸酯两性表面活性剂。

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18、

Application of microwave in determination of P_2O_5 in phosphate rock by ammonium phosphomolybdate volumetric method Rapid Determination of Iron in Copper Ore by Potassium Dichromate Volumetry

微波在磷钼酸铵容量法快速测定磷矿石中五氧化二磷的应用重铬酸钾容量法快速测定铜矿石中的铁

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19、

The determination result of the trace water in SF 6 by the improved device tallies with that by P 2O 5 electrolysis method.

测定六氟化硫气体中痕量水，其测定结果与五氧化二磷电解法基本相符。

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20、

The method is suited to determine the phosphorus pentoxide contents with the range of 5%~ 38% in phosphate ores.

适用于磷矿石中5%～38%五氧化二磷的测定。

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