, 2011 本发明公开了一种制备锂离子电池用聚阴离子型正极材料的溶胶-凝胶方法。首先将锂盐、过渡金属盐、聚阴离子前驱物和碳源按照一定的化学计量比混合制成溶胶；然后在一定条件下加入有机环氧化物制成凝胶；经干燥、煅烧后制得最终产物—聚阴离子型正极材料。该方法简单、易操作；反应物混合更均匀，凝胶易形成；与固相合成法相比，降低了煅烧温度和煅烧时间；与其它溶胶-凝胶方法相比，该方法成胶快，合成时间大为缩短，适合工业化生产。利用该方法合成的聚阴离子型正极材料具有粒径小、分布均匀、比表面大等优点；特别是材料还具有良好的充放电性能、
王福庆, 陈剑, 程睿
core
Gongye shui chuli采用硫酸吸收荒煤气中氨气生产硫酸铵过程中，随着硫酸铵母液的循环使用，母液中的金属离子、有机物、氯离子等杂质不断累积，为避免影响硫酸铵产品质量和设备的稳定运行，通常需要置换出部分硫酸铵母液来降低杂质含量。由于被排出的废硫酸铵母液中氨氮、COD、氯离子及金属离子浓度极高，不满足直接排入焦化废水处理系统的水质要求。针对某煤精厂高盐高有机物废硫酸铵母液，采用氨气将硫酸铵母液pH调节至7.5~9.0，使母液中粗吡啶析出后溢流去除，使金属离子形成的氢氧化物沉淀，通过板框压滤机过滤去除 ...
刘士强, 王传荟, 施亮
doaj
[Determination of 38 antibiotic residues in honey by magnetic dispersive solid-phase extraction-liquid chromatography-tandem mass spectrometry]. [PDF]
Se PuSun J +8 more
europepmc +1 more source
, 2017 以N，N-亚甲基双丙烯酰胺为交联剂，先通过光引发聚合制备聚丙烯酰胺水凝胶内嵌聚苯乙烯胶体晶体的聚合胶体晶体（PCC），再将PCA2与氯化1-烯丙基-3-甲基咪唑离子液体进行溶剂置换，制备了离子液体聚合胶体晶体（ILPCC）。采用反射光谱研究了制备过程中聚合胶体晶体结构的变化，考察了ILPCC的压力响应性和压缩性能。研究表明，离子液体使胶体晶体的带隙先蓝移后红移，达到平衡时带隙红移220nm以上。离子液体显著改善了聚合胶体晶体的存储稳定性和压缩性能 ...
汤克勇 +4 more
core
[Determination of ergot alkaloids toxins in forage grass by ultra performance liquid chromatography-tandem mass spectrometry coupled with solid-phase supported liquid-liquid extraction]. [PDF]
Se PuRen CX +5 more
europepmc +1 more source
[Research progress on high performance liquid chromatography stationary phases based on mixed mode]. [PDF]
Se PuLi SJ, Li Z, Tang ZX, Lyu M, Wang LT.
europepmc +1 more source
[<i>Angelica sinensis</i> polysaccharide ameliorates endometriosis in rats by restoring autophagic homeostasis via inhibition of Keap1/Nrf2/HO-1-mediated oxidative stress]. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue BanLi J, Li X, Ji X, Huang Y, Wang Z.
europepmc +1 more source
[Development of a machine learning-based ionization efficiency prediction model for per- and polyfluoroalkyl substances and its application in semi-quantitative analysis]. [PDF]
Se PuSun SZ +6 more
europepmc +1 more source
[Magnetic fluorinated covalent triazine frameworks for efficient extraction of perfluorinated compounds]. [PDF]
Se PuZhang WM +4 more
europepmc +1 more source
[Research progress on ionic liquid-functionalized magnetic Fe<sub>3</sub>O<sub>4</sub> nanomaterials in sample pretreatment- chromatographic analysis]. [PDF]
Se PuLi JX +6 more
europepmc +1 more source