论述了光谱的基本概念及在木素结构研究上的应用。
In this paper the basic concept of spectrum and it's application in the structure of lignin were discussed.
阐述了根据木素结构基本特点来进行光谱分析的方法。
Explain method of spectrum analysis to base basic particularity of lignin structure.
对吸收光谱在分析和研究木素结构及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.
对氧脱木素前活性氧活化预处理过程中,纸浆残留木素结构的变化进行了研究。
Structural changes of lignin during the course of activation pretreatment for the oxygen delignification of masson pine kraft pulp were investigated in this study.
通过IR、1H N MR技术初步研究了荻自催化乙醇制浆中木素结构的变化。
The structural change of silver grass lignin in Auto-catalyzed ethanol-water pulping was studied by IR and 1h-nmr.
通过红外光谱、核磁共振氢谱技术手段研究了杨木自催化乙醇制浆中木素结构的变化。
The change of aspen lignin structure in auto-catalyzed ethanol-water pulping was studied by IR and 1h-nmr.
本文叙述了利用碱法制浆废液中的碱木素同苯酚、甲醛缩合制取结构材料粘合剂的方法。
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.
利用UV、IR等分析手段,揭示了红麻全秆木素化学结构的特点,同时对其在烧碱-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.
综述了五味子科植物中主要成分木脂素类的结构类型和氢谱特征。
This paper reviewed structural and 1h NMR spectroscopic characteristics of lignans from plants of Schisandraceae.
综述了五味子科植物中主要特征成分联苯环辛二烯木脂素类的结构和碳谱特征。
This paper reviewed structural and 13 C NMR spectroscopic characteristics of dibenzocyclooctadiene lignans from plants of Schisandraceae .
蔗渣磨木木素在隋性气体氛围下,热化学裂解形成大量含苯环的木素基本结构单元衍生物,部分进一步降解成小分子化合物。
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.
叙述了利用碱法制浆废液中的碱木素同苯酚,甲醛缩合制取结构材料粘合剂的方法。
The methods for preparing plywood adhesive by condensing phenol and formaldehyde with alkaline lignin in waste water are described.
结果表明,预处理过程中愈创木基易于磺化和溶出,木素中有新的共轭羰基和醌型结构产生。
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.
将合成出的具有特定结构的复合型固体碱催化剂,与溶有纯化碱木素的四氢呋喃建立起多相催化体系,对碱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 .
木素是大豆异黄酮,植物化学物质的结构类似雌激素的类型。
Genistein is a type of soy isoflavone, a plant chemical that is structurally similar to estrogen.
图谱分析表明,蔗渣碱木素主要由紫丁香基,愈创木基和对羟苯基三种丙烷结构单元组成,其中未绩合的紫丁香基、愈创木基和对羟羊基含量比为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.
其位移效应规律对于双环氧四氢呋喃木脂素的结构确定,尤其糖的连接位置和羟化位置的指定,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.
其位移效应规律对于双环氧四氢呋喃木脂素的结构确定,尤其糖的连接位置和羟化位置的指定,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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