采用热重法对聚氯乙烯(PVC)的燃烧过程进行了研究,探讨阳聚氯乙烯燃烧科技司,并由它们的微分热重曲线计算出的反应动力学参数及影响反应常数的因素进行了研究。同时,考察了恒速升温和快速升温过程HCI的生成特性。结果表明,PVC的燃烧机理是由三个过程决定的,可用三个一级反应表示。PVC的燃烧过程的第一阶段为脱氯阶段。第二阶段的活化能和指前因子明显低于第一和一阶段。此阶段为挥发分释放阶段 ...
郭小汾, 谢克昌
core
[Value assignment technology for 1,3-oleic-2-palmitic triglyceride purity reference material]. [PDF]
Wang XY +6 more
europepmc +1 more source
用自制的新型吸附剂从浓氢氧化钠溶液中吸附分离氯化钠,确定了吸附时间、碱液浓度、吸附剂用量、吸附温度等因素对吸附的影响.结果表明,该吸附剂对浓碱溶液中的氯化钠有良好的吸附分离效果,且容易洗脱 ...
李佐虎 +4 more
core
[Deep eutectic solvents modified reversed-phase liquid chromatography for the separation of natural products]. [PDF]
Zhang H +7 more
europepmc +1 more source
采用绿色化学新工艺脱除赤泥中的钠。试验条件下氯化铵浸出赤泥中钠的较适宜工艺参数为:反应温度160℃、反应时间4h、氯化铵用量为理论用量的1.5倍、赤泥粒度为94~150μm。赤泥不溶性残渣中的Na2O含量可以降低到1%以下,满足作水泥材料要求。钙、镁、钠通过体系中NH3和CO2及烟道气中提取的CO2与氯化铵分离 ...
王云山, 张金平, 杨刚
core
[Epidemiology, clinical characteristics, and treatment patterns of pediatric systemic lupus erythematosus based on regional electronic healthcare data in Beijing]. [PDF]
Xu JR +5 more
europepmc +1 more source
[Isolation of angular-type pyranocoumarins from <i>Peucedani Radix</i> guided by liver microsomal metabolites and structural identification of the metabolites]. [PDF]
Yang Y +6 more
europepmc +1 more source
[Magnetic fluorinated covalent triazine frameworks for efficient extraction of perfluorinated compounds]. [PDF]
Zhang WM +4 more
europepmc +1 more source
[Determination of six whitening ingredients in cosmetics by ultra performance liquid chromatography coupled with photodiode array detector and corona charged aerosol detector]. [PDF]
Li X +8 more
europepmc +1 more source

