1) heteropolyacid quaternary ammonium
杂多酸季铵盐
1.
This paper reviews the progress in oxidation reaction under two-phase and homogeneous conditions,with heteropolyacid quaternary ammonium catalyst as phase-transfer catalyst and hydrogen peroxide as oxidant.
杂多酸阴离子与季铵盐阳离子结合形成杂多酸季铵盐。
2) heteropoly quaternary ammonium
杂多季铵盐
3) quaternary ammonium heteropolyphosphatotungstate
磷钨杂多酸季铵盐
1.
A liquid-liquid catalytic oxidation system containing quaternary ammonium heteropolyphosphatotungstate and hydrogen peroxide was employed to reduce the olefin content in an FCC gasoline.
将磷钨杂多酸季铵盐相转移催化剂/双氧水(Q3[PO4(WO3)4]/H2O2)体系应用于FCC汽油的液-液高效催化氧化降烯烃。
2.
In the presence of H2O2,the epoxidation of α,β-unsaturated ketones catalyzed by quaternary ammonium heteropolyphosphatotungstate was studied.
以过氧化氢为氧源,磷钨杂多酸季铵盐为催化剂,研究了α,β-不饱和酮的环氧化反应,考察了溶剂、温度、催化剂用量、反应时间以及底物浓度等因素对环氧化反应的影响。
4) ammonium heteropoly acids
杂多酸铵盐
1.
The kinetics for heterogeneous hydrolysis of methyl acetate over ammonium heteropoly acids was studied.
针对醋酸甲酯水解悬浮催化蒸馏工艺的要求,对杂多酸铵盐用作醋酸甲酯水解反应催化剂的反应动力学做了研究。
5) quaternary ammonium peroxotungsto phosphate
过氧化磷钨杂多酸季铵盐
1.
By reactions of three kinds of quaternary ammonium salts such as Bu4NCl,(C8H17)3CH3NCl and π-C5H5NC16H33Br with H2WO4 or Na2WO4,a series of quaternary ammonium peroxotungsto phosphate catalysts Q+3{PO4[W(O)O4]3[W(O)O4]}3-(Q+:quaternary ammonium cationR4N+) were prepared and their catalytic activities for expoxidant of styrene were studied with 1,2-dichloroethane as solvent and H2O2 as oxidation.
分别采用不同的季铵盐四丁基氯化铵(Bu4NCl)、三辛基甲基氯化铵(C8H17)3CH3NCl和溴化十六烷基吡啶(π-C5H5NC16H33Br)与钨酸或钨酸钠、磷钨酸反应制得过氧化磷钨杂多酸季铵盐Q3+{PO4[W(O)O4]3[W(O)O4]}3-(Q+:季铵盐正离子R4N+),以其为催化剂、二氯乙烷为溶剂、H2O2为氧化剂氧化苯乙烯,结果发现过氧化磷钨三辛基甲基铵有很好的催化活性,在反应温度55℃、pH=3。
6) multiple quaternary ammonium salt
多季铵盐
1.
All of the prepared multiple quaternary ammonium salts showed good water solubility.
介绍了从十二胺和环氧氯丙烷合成一系列在两个十二烷基二甲基季铵盐基团之间分别含有一个甲基亚胺基、十二烷基亚胺基、二甲基亚铵基以及十二烷基甲基亚铵基的多烷基多季铵盐的方法及其表面活性。
补充资料:杂多酸
分子式:
CAS号:
性质:由不同的含氧酸缩合而制得的缩合含氧酸的总称。是强度均匀的质子酸,并有氧化还原的能力。通过改变分子组成,可调节酸强度和氧化还原性能。水分存在时形成的拟液相,也能影响其酸性和氧化还原性能。已应用于工业生产的有十二钨磷酸,用于使丙烯水合制异丙醇。转化率中等,选择性很高。
CAS号:
性质:由不同的含氧酸缩合而制得的缩合含氧酸的总称。是强度均匀的质子酸,并有氧化还原的能力。通过改变分子组成,可调节酸强度和氧化还原性能。水分存在时形成的拟液相,也能影响其酸性和氧化还原性能。已应用于工业生产的有十二钨磷酸,用于使丙烯水合制异丙醇。转化率中等,选择性很高。
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