Results 1 to 10 of about 841,203 (143)
Zhejiang Daxue xuebao. Lixue ban, 2006 以氢氧化钠、碳酸氢铵和尿素处理的稻草为研究对象，采用糖腈乙酰酯法和碱性硝基苯氧化法，分别测定了化学预处理前后稻草用80%乙醇浸提残渣中结构性多糖和木质素组分的变化.试验结果显示，化学预处理后稻草结构性多糖水解产物下降7.9%〜17.7%；木质素组分中愈伤木基木质素下降31.9%〜37. 7%，对羟基苯基木质素下降16. 6%〜28. 5%，紫丁香基木质素下降11.5%〜16. 8%，对香豆酸下降16.6%〜26.
WANGJia-kun(王佳堃) +4 more
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Gongye shui chuli, 2021 采用单因素实验法和响应曲面法，以杨木碱浸渍废液的木质素去除率和B/C为评价指标，探究了漆酶与杨木碱浸渍废液在充氧条件下的最佳作用条件。单因素实验通过设置多个实验梯度确定因素最佳范围，再在最佳范围内每个因素设置3个水平进行响应曲面分析，探讨了漆酶投加量、反应温度、反应时间3个因素对处理效果的影响，从而确定出最佳作用条件。实验结果表明，最佳作用条件：漆酶投加量157 U/L，反应温度37℃，反应时间4.56 h，在此条件下，预测木质素去除率为42.66%，B/C为0.758；验证实验得到的木质素去除率为43%
王旭, 项钰洲, 肖生苓, 岳金权
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Gongye shui chuli, 2005 提出了我国碱木质素利用关键是增加碱木质素醇羟基和酚羟基含量,降低甲氧基含量,提高反应活性。分析了采用化学和物理等方法增加碱木质素自身的反应活性的原理和可能性。介绍了木质素系水处理剂的研究近况,对于我国木质素水处理剂应用研究存在的产品功能单一等问题,认为应根据我国工业木质素来源特点,先采用多种手段提高碱木质素的反应活性,然后研制多功能水处理剂,可充分发挥木质素自身优势,具有较大发展前景。
任世学, 方桂珍
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Gongye shui chuli, 2006 采用自由基共聚反应，对工业磺化木质素进行接枝羧基的改性，制备得到羧酸型磺化木质素阻垢剂。阐明了不同引发剂对合成反应的影响；比较了羧酸型磺化木质素与目前几种常用阻垢剂的阻垢性能，并对其阻垢机理进行了探讨。实验结果表明，羧酸型磺化木质素是一种阻垢性能较为理想的绿色阻垢剂。
谢燕, 曾祥钦
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Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Photocatalytic hydrogen peroxide (H2O2) production from water and oxygen driven by solar energy represents a highly promising green and sustainable strategy. Herein, lignin‐derived carbon quantum dots (LCDs) were strategically introduced at the heterojunction between a Bi‐based metal organic framework (Bi‐MOF) and ZnIn2S4 (ZIS).
Wanpeng Sun +8 more
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Gongye shui chuli, 2008 从造纸黑液中提取的木质素对糖蜜酒精废液有明显的脱色效果,但从造纸黑液中提取木质素时的工艺、黑液的品种以及黑液的新鲜程度等因素直接影响着木质素对糖密酒精废液的脱色效果。作者就以上的各种影响因素进行了定量和定性的讨论。
冯冰凌, 袁荣华, 江丽, 冼萍
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Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Biomass‐based hydrogels are widely regarded as ideal substrates for self‐powered wearable sensors. However, the practical applications of hydrogels are commonly limited by their inherent low strength and toughness, which restrict their capacity to withstand repeated stretching, bending and other mechanical loads arising from human motion in ...
Boyu Du +9 more
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Biomass‐Derived Laser‐Induced Graphene: From Precursor Chemistry to Device Integration
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Laser direct writing provides a mask‐free route for converting suitable carbon‐containing precursors into patterned, porous, and conductive laser‐induced graphene (LIG) networks. Although LIG was initially demonstrated mainly using aromatic synthetic polymers, such as polyimide, biomass precursors introduce renewable feedstocks with highly ...
Wanjun Yin +10 more
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Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Common methods of lignocellulose pretreatment (such as acid method, alkali method, and organic solvent method) have been severely restricted in their development due to issues such as harsh reaction conditions, high cost of reagents, and heavy environmental burden.
Weirong Li +9 more
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Gongye shui chuli, 2009 用自制的改性木质素磺酸盐处理电镀含镉废水,实验表明:在室温条件下,单体用量为1.5mol/L,反应48h时,可得到相对分子质量较大、絮凝效果较好的改性木质素磺酸盐。当pH控制在7,改性木质素磺酸盐用量80mg/L,絮凝60min,室温条件下,可使含镉废水中Cd2+的去除率达到99%以上。
李爱阳, 李大森, 李安伍
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