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- Abstract： N-（3-Amino-4-methoxyphenyl）acetamide is an important intermediate for the production of azo disperse dyes，while it is still produced by reduction with iron powder in industry currently. 摘 要： N-（3-氨基-4-甲氧基苯基）乙酰胺是生产偶氮型分散染料的一类重要中间体。现有的工业生产方法仍全部采用铁粉还原。
- reduction with iron powder 铁粉还原
- The two-step process involving gas oxidation of phenol to benzoquinone with complex metal ions catalysts and reduction of benzoquinone to hydroquinone with iron powder was studied. 以苯酚为原料,复合金属离子为催化剂,研究用气相氧化合成苯醌,用铁粉还原苯醌制对苯二酚的两步法工艺,考察了氧化过程中的工艺条件对反应的影响。
- Compared with the traditional method adjusting iron ratio of catalyst of synthetic ammonia with iron bar, this paper presents method of iron ratio adjustment with reduced type iron powder. 与传统以铁条调整氨合成催化剂铁比的方法不同;本文所提是以还原铁粉调整铁比.
- The vitamin is fortified with iron. 这种维他命加了铁。
- Measuring clearance reduction with a feeler gauge. 用测隙规测量游隙减小量。
- Coal seams intermixed with iron ore. 煤层和铁矿混杂在一起。
- He had shepherd's crook tipped with iron. 他有一根牧羊人用的带铁头的棍杖。
- Measuring the clearance reduction with a feeler gauge. 用测隙规测量游隙的减小值。
- We'll reinforce the cease with iron strap. 我们将用铁皮条给箱子加固。
- The bandits beat him with iron bars. 那些匪徒用铁棍打他。
- The preparation of superfine iron powder by reduction of nano-sized ferric oxide with H_2 at different tempareture for different time was investigated. 本文探讨了用纳米氧化铁粉末还原来制取微细铁粉的工艺。
- The reduction rate of ferric oxide powder and specific surface area of superfine iron powder were measured, compared and analyzed. 研究表明纳米氧化铁粉活性高,还原温度低,可获得微细铁粉;测量了各个温度和时间下反应的还原率和所得粉末的比表面积,并进行了比较和分析。
- The yard had been enclosed with iron railings. 院子用铁栅栏围了起来。
- Resin flower vase with iron cand. 树脂花瓶。
- Results show that nano-sized ferric oxide has high reactivity, lower reduction temperature for superfine iron powder preparation. 用纳米氧化铁粉末作原料,分别在不同的温度,不同的还原时间下,用氢气还原来制备微细铁粉。
- Coal seams intermixed with iron ore . 煤层和铁矿混杂在一起。
- We'll reinforce them with iron straps. 我们用铁皮带加固。
- The reduction rate of ferric oxide powder and specific surface area of superfine iron powder were measured,compared and analyzed. 测量了各个温度和时间下反应的还原率和所得粉末的比表面积,并进行了比较和分析。
- So we followed the next week with iron particles. 于是随后的一周里我们用了铁颗粒。
