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首页> 外文期刊>American Journal of Analytical Chemistry >Influence of Ionic Additives on the Pyrolysis Behavior of Paper
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Influence of Ionic Additives on the Pyrolysis Behavior of Paper

机译：离子添加剂对纸张热解作业的影响

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In the course of this study the influence of ionic additives (sodium, potassium, lithium, magnesium, and manganese as cations; acetate, lactate, malate, malonate, succinate, and citrate as anions) on the pattern of volatile pyrolysis products of finished paper is investigated. The pyrolysis of paper causes a cascade of reaction products. As expected, the most abundant pyrolysis product is levoglucosan, however, along with other volatile products, such as hydroxyl and carbonyl compounds, furan and pyran derivatives, phenols, and other anhydrosugars, respectively. These compounds can easily be separated and characterized online using analytical pyrolysis in combination with gas chromatography (GC) and mass spectrometry (MS) detection. Both the composition and total amount of volatile pyrolysis products are significantly altered when the paper samples contain metal salt ions and salts of organic acids, respectively. Principal Component Analysis (PCA) was employed for the multivariate analysis of the obtained pyrolysis products. This allows for a qualitative interpretation on how the various ionic additives affect the formation of specific pyrolysis products. When organic acids are added onto the paper, the pyrolysis pattern mainly depends on the protic properties of the organic acids (mono/di/triprotic) and to a lesser extent on the type within a protic class (monoprotic acetate or lactate vs.diprotic malate or malonate or succinate vs. triprotic citrate). The pyrolysis pattern of the paper samples is more markedly influenced by the type of metal ions rather than by the type of organic acid. These effects significantly depend on both the valence and the concentration of the specific metal salt.
机译：在该过程中，研究了离子添加剂（钠，钾，锂，镁，锰作为阳离子的影响;醋酸盐，乳酸，苹果酸盐，丙酸盐，琥珀酸和柠檬酸盐作为阴离子）的成品纸的挥发性热解产物的图案被调查了。纸的热解导致级联反应产物。如预期的那样，最丰富的热解产物是左葡聚糖，以及其他挥发性产品，例如羟基和羰基化合物，呋喃和吡喃衍生物，酚类和其他卤水藻。这些化合物可以在使用分析热解（GC）和质谱（MS）检测中使用分析热解来容易地分离并在线在线表征。当纸张样品含有金属盐离子和有机酸盐的盐时，挥发性热解产物的组成和总量都显着改变。主要成分分析（PCA）用于多变量分析得到的热解产物。这允许有关各种离子添加剂如何影响特异性热解产品的形成的定性解释。当将有机酸加入到纸上时，热解模式主要取决于有机酸（单℃/ di / Tripolistic）的质子特性，并在较小程度上对质子类内的类型（单丙酸盐或乳酸乳酸雌酸乳酸乳酸乳酸盐或丙酸酯或琥珀酸术与旅行柠檬酸盐）。纸样品的热解模式更明显受金属离子的类型而不是通过有机酸的类型影响。这些效果显着取决于特定金属盐的价值和浓度。

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