[Research progress on high performance liquid chromatography stationary phases based on mixed mode]. [PDF]
Li SJ, Li Z, Tang ZX, Lyu M, Wang LT.
europepmc +1 more source
一种5,5,5-三氯-2-甲基-2-戊醇(简称氯醇)选择性脱水制备5,5,5-三氯-2-甲基-2-戊烯(简称TCPE-2)方法。该方法分两步,第一步是由氯醇脱水生成TCPE-2和5,5,5-三氯-2-甲基-1-戊烯(简称TCPE-1),反应温度为90 ̄120℃,氯醇的转化率可为100%,TCPE-2和TCPE-1的比例可达到91:9;第二步是TCPE-1通过异构生成TCPE-2,反应温度为-20 ̄100℃,TCPE-2和TCPE-1的比例可达到97:3。两步方法中所用催化剂均为强酸性阳离子交换树脂 ...
孙承林, 刘中民, 张今令, 王华
core
[Research progress on ionic liquid-functionalized magnetic Fe<sub>3</sub>O<sub>4</sub> nanomaterials in sample pretreatment- chromatographic analysis]. [PDF]
Li JX +6 more
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一种丁二酸二烷基酯连续水解制备丁二酸的方法和装置:将含有丁二酸二烷基酯的原料预热至30~200℃选择不同高度的进料口输入反应蒸馏塔内;预热至30~200℃的反应水与产生汽提蒸汽的水经过蒸汽发生器从反应蒸馏塔下部的水蒸汽进入反应蒸馏塔内;丁二酸二烷基酯和水的重量比为1∶1~1∶15;在140~350℃水解反应温度下,丁二酸二烷基酯水解成的易挥发的醇和难挥发的丁二酸;醇从反应蒸馏塔的顶部的产物出口导出,经冷凝回收;丁二酸在反应蒸馏塔的底部出料口导出至塔釜,再经分离单元分离出固体丁二酸 ...
严丽, 程显波, 郁俊冬, 丁云杰
core
[Simultaneous determination of 10 quaternary ammonium salt bactericides in oral care products by high performance liquid chromatography-evaporative light-scattering detection]. [PDF]
Tang J +6 more
europepmc +1 more source
一种甲苯甲基化制对二甲苯联产低碳烯烃的方法,该方法可以使用一种催化剂在高选择性生产对二甲苯的同时高选择性地联产乙烯和丙烯。该方法采用甲苯与甲基化试剂同时进料,在不同的操作条件下,产物中对二甲苯在二甲苯异构体中的选择性可达到85-95wt%,乙烯和丙烯在 C1-C5低碳烃中选择性可达到70-85wt%,同时产物中对二甲苯与乙烯分子比可以调节 ...
刘中民, 张新志, 华邦嵩, 许 磊
core
[Construction of acrylpimaric acid-bonded silica stationary phase and its application in mixed-mode chromatographic separation]. [PDF]
Zeng L +5 more
europepmc +1 more source
[Risk analysis of serum chemical residues for metabolic associated fatty liver disease based on exposome-lipidome wide association study]. [PDF]
Chen QQ +6 more
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[Determination of 145 pharmaceuticals and personal care products in eleven categories in water by ultra-high performance liquid chromatography-triple quadrupole mass spectrometry]. [PDF]
Sun H +5 more
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