The [Bmim]4W10O23 Catalyzed Oxidation of 3,4-Diaminofurazan to 3,4-Dinitrofurazan in Hydrogen Peroxide

The [Bmim]4W10O23 Catalyzed Oxidation of 3,4-Diaminofurazan to 3,4-Dinitrofurazan in Hydrogen Peroxide
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[Bmim]4W10O23 在过氧化氢中催化 3,4-二氨基呋喃氧化为 3,4-二硝基呋喃

DOI:
10.1021/ie200009g
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发表时间:
2011-05
期刊:
Ind. Eng. Chem. Res.
影响因子:
--
通讯作者:
Zhao-Tie Liu
Zhao-Tie Liu
中科院分区:
其他
文献类型:
--
作者:
Hua-Ping Ren;Zhong-Wen Liu;Jian Lu;Zhao-Tie Liu

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以1-丁基-3-甲基咪唑溴化铵和钨酸钠为原料,在盐酸溶液中合成了1-甲基-3-丁基咪唑十钨酸盐([C8H15N2]4W10O23,[Bmim]4W10O23)。以[Bmim]4W10O23为催化剂,50%H_2O_2为氧化剂,以3,4-二氨基呋喃(DAF)为原料,在浓硫酸中合成了3,4-二硝基呋喃(DNF)。在35℃的反应温度下,与传统的Na2WO4·2H2O催化剂相比,在相同的反应条件下,DNF的产率从39%提高到58%。考察了催化剂、反应时间、反应温度对反应的影响。当[Bmim]4W10O23用量为0.03g,H_2O_2/H_2SO_4摩尔比为1.5:1,反应温度为35℃,反应时间为210min时,DNF的产率最高可达58%。
1-Methyl-3-butylimidazolium decatungstate ([C8H15N2]4W10O23, [Bmim]4W10O23) was prepared from 1-butyl-3-methylimidazolium bromide and sodium tungstate in hydrochloric acid solution. With the use of [Bmim]4W10O23 as the catalyst and 50% H2O2 as the oxidant, 3,4-dinitrofurazan (, DNF) was synthesized from 3,4-diaminofurazan (, DAF) in concentrated H2SO4. At a temperature of 35 °C, this process significantly increased the DNF yield from 39% to 58%, when compared with that with the conventional Na2WO4·2H2O catalyst under the same conditions. The effects of catalyst, reaction time, and temperature were investigated. A maximum DNF yield of 58% was obtained under optimal reaction conditions: 0.03 g of [Bmim]4W10O23, H2O2/H2SO4 molar ratio of 1.5:1, temperature and reaction time of 35 °C and 210 min, respectively.
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