• 论述了光谱基本概念结构研究应用

    In this paper the basic concept of spectrum and it's application in the structure of lignin were discussed.

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  • 阐述根据木素结构基本特点来进行光谱分析方法

    Explain method of spectrum analysis to base basic particularity of lignin structure.

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  • 吸收光谱分析研究结构应用等方面进行了分类综述

    This article make on classified explanation to absorption spectrum on analyzing and researching lignin structure, application of lignin.

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  • 前活性氧活化预处理过程中纸浆残留木素结构变化进行了研究

    Structural changes of lignin during the course of activation pretreatment for the oxygen delignification of masson pine kraft pulp were investigated in this study.

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  • 通过IR1H N MR技术初步研究了荻自催化乙醇制浆结构变化

    The structural change of silver grass lignin in Auto-catalyzed ethanol-water pulping was studied by IR and 1h-nmr.

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  • 通过红外光谱、核磁共振氢谱技术手段研究了自催化乙醇制浆木素结构变化

    The change of aspen lignin structure in auto-catalyzed ethanol-water pulping was studied by IR and 1h-nmr.

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  • 本文叙述了利用碱法制浆废液中的木素苯酚甲醛缩合制取结构材料粘合剂方法

    The methods for preparing structural material bonding agent by condensing the alkaline lignin in the wast liquor of soda pulping process with formaldehyde and phenol are described.

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  • 利用UVIR分析手段,揭示了红麻全秆化学结构特点,同时对烧碱-AQ法蒸煮过程中的脱除特性进行了探讨。

    The chemical structure of lignin in kenaf has been investigated through UV, IR and other analytical methods. Lignin removal in the soda-AQ pulping of kenaf is discussed.

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  • 综述五味子植物主要成分结构类型特征

    This paper reviewed structural and 1h NMR spectroscopic characteristics of lignans from plants of Schisandraceae.

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  • 综述五味子植物中主要特征成分联苯环辛二结构特征

    This paper reviewed structural and 13 C NMR spectroscopic characteristics of dibenzocyclooctadiene lignans from plants of Schisandraceae .

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  • 蔗渣磨隋性气体氛围下,热化学裂解形成大量苯环基本结构单元衍生物部分进一步降解分子化合物

    The result indicated that MWL was degraded to lots of basic structure unit ramifications contained phenyl of lignin, some of which were decomposed to compound of small molecular weight.

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  • 叙述了利用碱法制浆废液中的木素苯酚甲醛缩合制取结构材料粘合剂方法

    The methods for preparing plywood adhesive by condensing phenol and formaldehyde with alkaline lignin in waste water are described.

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  • 结果表明预处理过程中愈创易于磺化溶出木素新的共轭羰基醌型结构产生

    The results showed that during the chemical pretreatment the guaiacyl unit was more readily to be sulfonated and dissolved, and there were new conjugated carbonyl and quinoid structure formed.

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  • 将合成出具有特定结构的复合型固体催化剂溶有纯化的四氢呋喃建立多相催化体系木素进行了多相催化羟甲基化作用。

    A heterogeneous catalytic system for methylolation of alkali lignin was constituted of tetrahydrofuran containing purified alkali lignin and solid alkali catalyst with special structure .

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  • 木素大豆异黄酮植物化学物质结构类似雌激类型

    Genistein is a type of soy isoflavone, a plant chemical that is structurally similar to estrogen.

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  • 图谱分析表明蔗渣木素主要紫丁香基,愈创基和对羟苯基种丙烷结构单元组成,其中未绩合紫丁香、愈创基和对羟羊基含量2

    The spectrum showed that BSL was composed mainly of syringl (S), guaiacyl(G) and p-hydroxylphengl (H) units, and the ratio of three uncondensed group (S:G:H)was 2.

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  • 位移效应规律对于双环氧四氢呋喃结构确定尤其连接位置化位置的指定,提供了一定的判断依据。

    The rules of displacement provided suggestion for the confirmation of double-tetrahydrofuran lignans, especially the position of hydroxylation and glycosylation.

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  • 位移效应规律对于双环氧四氢呋喃结构确定尤其连接位置化位置的指定,提供了一定的判断依据。

    The rules of displacement provided suggestion for the confirmation of double-tetrahydrofuran lignans, especially the position of hydroxylation and glycosylation.

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