1、

While the precipitation is washed, dried activity and low ash content lignin is acquired.

沉淀物经洗涤 、 低温冷冻干燥可得到低灰分的木质素.HBS经热蒸发去水后可循环使用.

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2、

Determination of the Content of Phenolic Hydroxyl Groups in Lignin and Pulp with FC-Method

FC法测定木素和纸浆中的酚羟基

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3、

In addition, compared with acidic lignin from stalk, aliphatic hydroxyl content of the lignin from pith was higher, phenolic hydroxyl and methoxy content were lower;

另外,与秆部木素相比,髓芯木素中醇羟基含量较高,酚羟基和甲氧基含量较低。

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4、

chinese silvergrass is suitable as materials for producing fuel ethanol due to its high content of decomposable cellulose and hemicellulose, totally more than 80 percent, only 19 percent is unmanageable materials, such as phenyl compounds, lignin.

芒草含有80%以上的可降解的纤维素和半纤维素,仅含有19%的不被酸降解的苯环化合物,木质素,适于作为生产燃料乙醇的原料。

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5、

APMP produced form SHW has higher content of lignin and lower holocellulose, and lower tensile, burst and tear strength by comparison with PHW.

与PHW的APMP相比,SHW的APMP木素含量较高,而综纤维素含量较低,成纸的抗张强度、耐破强度和撕裂强度均较低。

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6、

The results of test showed that SHW has clearly lower content of hot water and 1% NaOH extractives and clearly higher alcohol-benzene extractives, and slightly lower hemicellulose and ash, and roughly the same lignin and holocellulose contents by comparison with PHW.

实验的结果表明,与PHW相比SHW的热水抽出物及1%NaOH抽出物明显较低,而苯醇抽出物明显较高,半纤维素及灰分含量略低,木素和综纤维素含量则大体相当。

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7、

Plant and soil samples collected from the Yangtze River ( Changjiang) drainage basin were analyzed for carbon content, stable carbon isotopes and lignin phenol content to investigate the characteristics of terrigenous organic matter.

为探讨长江流域中植物和土壤的木质素特征,应用碱性氧化铜分解-气相色谱检测法对长江流域的典型植物和土壤样品中的木质素进行了测定分析。

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8、

after heating treatment, the relative content of lignin increased, while holocellulose and alpha-cellulose decreased of 4 years bamboo.

随氙灯照射时间的延长,不同竹龄竹材表面半纤维素相对含量增加,木质素相对含量降低。

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9、

As to the pyrolysis of lignin, nickel-based catalysts and calcined dolomite exhibit different effect on the content change of CO and CO2.

白云石和镍基催化剂对木质素热解气中H2,CH4和C2组分的影响作用相同,对CO和CO2的影响作用相反。

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