Correlating lignin structural features to phase partitioning behavior in a novel aqueous fractionation of softwood Kraft black liquor

文献信息

发布日期 2013-08-19
DOI 10.1039/C3GC41182F
影响因子 10.182
作者

Ryan J. Stoklosa, Julian Velez, Mark C. Thies


查看原文

摘要

In this work, a set of softwood lignins were recovered from a Kraft black liquor using a novel pH-based fractionation process involving sequential CO2 acidification and separation of the solvated aqueous lignin fraction. These recovered lignin fractions were characterized with respect to properties that may be responsible for their phase partitioning behavior as well as properties that may render the lignins more suitable for materials applications. Lignin fractions were recovered between a pH range of 12.8 and 9.5 with the bulk of the lignin (90%) recovered between a pH of 11.1 and 10.0. While all the fractions were found to consist primarily of lignin as validated by sample methoxyl content, the first fractions to phase separated were found to be especially enriched in aliphatic extractives and polysaccharides. From the bulk of the lignin that was recovered between a pH of 11.1 and 10.0 a number of noteworthy trends were discernible from the data. Specifically, the phenolic hydroxyl content was found to exhibit a strong negative correlation to the fractionation pH and exhibited a nearly 50% increase with recovery at decreasing pH, while the GPC-estimated molecular weights and 13C NMR-estimated β-O-4 content showed strong positive correlations to the pH at recovery. The aliphatic hydroxyl content exhibited minimal differences between recovery conditions. Overall, these results suggest that this fractionation approach can generate lignin fractions enriched in select physical or structural properties that may be important for their application as feedstocks for renewable chemicals or materials.

相关文献

Electronic and steric effects on the three-fold Scholl-type cycloheptatriene ring formation around a tribenzotriquinacene core‡

Ho-Wang Ip, Hak-Fun Chow, Dietmar Kuck

2017-03-16 Research Article

DOI: 10.1039/C7QO00132K

Iron-catalyzed boration of cinnamyl carbonates: a highly stereoselective approach to cyclopropylboronates

Yang Liu, Yuhan Zhou, Dong Li, Han Chen, Jinfeng Zhao, Jingping Qu

2019-02-20 Research Article

DOI: 10.1039/C8QO01163J

Poly[2(6)-aminoazulene]: synthesis, photophysical properties, and proton conductivity

Ian Cheng-Yi Hou, Vijayendra Shetti, Shou-Ling Huang, Kun-Lin Liu, Chi-Yang Chao, Song-Cheng Lin, You-Jen Lin, Li-Yin Chen, Tien-Yau Luh

2017-03-06 Research Article

DOI: 10.1039/C7QO00087A

Spirocyclic cladosporicin A and cladosporiumins I and J from a Hydractinia-associated Cladosporium sphaerospermum SW67

Maja Rischer, Seoung Rak Lee, Hee Jeong Eom, Hyun Bong Park, John Vollmers, Anne-Kristin Kaster, Yern-Hyerk Shin, Dong-Chan Oh, Ki Hyun Kim, Christine Beemelmanns

2018-11-27 Research Article

DOI: 10.1039/C8QO01104D

Tuning liquid crystalline phase behaviour in columnar crown ethers by sulfur substituents

Jochen Kirres, Katharina Schmitt, Iris Wurzbach, Frank Giesselmann, Sabine Ludwigs, Mark Ringenberg, Angelika Baro, Sabine Laschat

2017-03-07 Research Article

DOI: 10.1039/C7QO00077D

Temperature-controlled helical inversion of asymmetric triphenylamine-based supramolecular polymers; difference of handedness at the micro- and macroscopic levels

Misun Go, Heekyoung Choi, Ka Young Kim, Cheol Joo Moon, Yeonweon Choi, Hiroyuki Miyake, Shim Sung Lee, Sung Ho Jung, Myong Yong Choi, Jong Hwa Jung

2019-02-19 Research Article

DOI: 10.1039/C9QO00051H

Expedient synthesis of a symmetric cycloheptyne-Co2(CO)6 complex for orthogonal Huisgen cycloadditions

Morgan Cormier, Eric Fouquet, Philippe Hermange

2019-02-28 Research Article

DOI: 10.1039/C9QO00086K

Manganese-mediated reductive amidation of esters with nitroarenes

Chi Wai Cheung, Ni Shen, Shao-Peng Wang, Asim Ullah, Xile Hu, Jun-An Ma

2019-01-30 Research Article

DOI: 10.1039/C8QO01405A

PIFA-Mediated oxidative cyclization of 1-aroyl-N-arylcyclopropane-1-carboxamides and their application in the synthesis of pyrrolo[3,2-c]quinolinones

Xiaolong Gao, Zhonglian Li, Guisheng Zhang, Nana Ma, Qingfeng Liu, Tongxin Liu

2016-12-13 Research Article

DOI: 10.1039/C6QO00598E

您可能还喜欢

化合物问答

如何储存8-溴-4-羟基-6-(三氟甲氧基)喹啉-3-羧酸乙酯(CAS号:1072944-81-0)?

8-溴-4-羟基-6-(三氟甲氧基)喹啉-3-羧酸乙酯应储存在阴凉、干燥的地方,避免光照和高温。建议使用密封容器进行储存,以防止水分和空气的影响。

1072944-81-0Ethyl 8-bromo-4-hydr...
化合物问答

2,2-二(2-呋喃基)丙烷(CAS号:17920-88-6)的市场或研究趋势如何?

2,2-二(2-呋喃基)丙烷的研究趋势主要集中在新型材料的开发和应用,如高分子材料、有机光电材料等。市场趋势方面,随着环保要求的提高和新材料的应用,该化合物的需...

17920-88-62,2'-(2,2-Propanediy...
化合物问答

如何处理含有螺[呋喃并[3,4-b]吡啶-5(7H),4'-哌啶]-7-酮盐酸盐(CAS号:475152-31-9)的废料?

对于含有螺[呋喃并[3,4-b]吡啶-5(7H),4'-哌啶]-7-酮盐酸盐的废料,应首先进行分类和分离,以减少危险物质的数量。随后,可以考虑通过化学氧化、生物...

475152-31-97H-Spiro[furo[3,4-b]...
化合物问答

Cinnamyl 3-aminobut-2-enoate(CAS号:113898-97-8)安全吗?

Cinnamyl 3-氨基丁-2-烯酸在接触皮肤和眼睛时可能会引起刺激。应避免吸入其粉尘和烟雾。操作时应穿戴适当的个人防护装备,如手套、护目镜和实验室外套。

113898-97-8Cinnamyl 3-aminobut-...
化合物问答

反式-2-十二碳烯二酸(CAS号:6402-36-4)的市场或研究趋势如何?

反式-2-十二碳烯二酸在医药、材料科学等领域有一定的应用,但其市场相对较小。近年来,由于环保意识的提升,对环境友好型化学品的需求增加,研究倾向于开发更绿色的合成...

6402-36-4Traumatic Acid
化合物问答

什么是(9ci)-1H-苯并咪唑-5-乙酸(CAS号:473895-86-2)?

(9ci)-1H-苯并咪唑-5-乙酸是一种含氮杂环化合物,其化学结构为1H-苯并咪唑-5-乙酸。该化合物具有特定的分子式C8H7NO2,属于有机酸类化合物。

473895-86-21H-Benzimidazol-5-yl...
化合物问答

酞菁蓝(CAS号:147-14-8)的主要用途是什么?

酞菁蓝主要用作颜料和染料,广泛应用于塑料、油墨、涂料、纺织品及橡胶工业中。它也用于光敏材料,如太阳能电池和光刻胶。在医疗领域,酞菁蓝因其光敏特性被用于某些光动力...

147-14-8Copper(2+) phthalocy...
化合物问答

5-甲基-1,2,3,4-四氢异喹啉(CAS号:123593-99-7)安全吗?

5-甲基-1,2,3,4-四氢异喹啉在使用和储存时需要谨慎处理。它具有一定的毒性,应避免吸入其蒸气或直接接触皮肤和眼睛。操作此化合物时,建议佩戴防护眼镜、实验服...

123593-99-75-Methyl-1,2,3,4-tet...
化合物问答

如何处理含有3',4',5'-三甲氧基苯乙酮(CAS号:1136-86-3)的废料?

含有3',4',5'-三甲氧基苯乙酮的废液应首先确保其是否为危险废物,根据当地法规确定处理方法。通常,这类有机废液可以采用中和反应降低其pH值,然后通过蒸馏或萃...

1136-86-31-(3,4,5-Trimethoxyp...
化合物问答

如何储存KI-7(CAS号:1489263-00-4)?

KI-7应储存在通风良好的干燥环境中,避免光照和高温。建议使用密封容器储存,并保持在阴凉处。储存温度应控制在室温范围内,一般建议不超过25°C。避免与氧化剂接触...

1489263-00-42-(1-Benzyl-1H-indol...

来源期刊

Green Chemistry

Green Chemistry
CiteScore: 16.1
自引率: 7.5%
年发文量: 944

Green Chemistry provides a unique forum for the publication of innovative research on the development of alternative green and sustainable technologies. The scope of Green Chemistry is based on, but not limited to, the definition proposed by Anastas and Warner (Green Chemistry: Theory and Practice, P T Anastas and J C Warner, Oxford University Press, Oxford, 1998). Green chemistry is the utilisation of a set of principles that reduces or eliminates the use or generation of hazardous substances in the design, manufacture and application of chemical products. Green Chemistry is at the frontiers of this continuously-evolving interdisciplinary science and publishes research that attempts to reduce the environmental impact of the chemical enterprise by developing a technology base that is inherently non-toxic to living things and the environment. Submissions on all aspects of research relating to the endeavour are welcome. The journal publishes original and significant cutting-edge research that is likely to be of wide general appeal. To be published, work must present a significant advance in green chemistry. Papers must contain a comparison with existing methods and demonstrate advantages over those methods before publication can be considered. For more information please see this Editorial. Coverage includes the following, but is not limited to: Design (e.g. biomimicry, design for degradation/recycling/reduced toxicity…) Reagents & Feedstocks (e.g. renewables, CO2, solvents, auxiliary agents, waste utilization…) Synthesis (e.g. organic, inorganic, synthetic biology…) Catalysis (e.g. homogeneous, heterogeneous, enzyme, whole cell…) Process (e.g. process design, intensification, separations, recycling, efficiency…) Energy (e.g. renewable energy, fuels, photovoltaics, fuel cells, energy storage, energy carriers…) Applications (e.g. electronics, dyes, consumer products, coatings, pharmaceuticals, preservatives, building materials, chemicals for industry/agriculture/mining…) Impact (e.g. safety, metrics, LCA, sustainability, (eco)toxicology…) Green chemistry is, by definition, a continuously-evolving frontier. Therefore, the inclusion of a particular material or technology does not, of itself, guarantee that a paper is suitable for the journal. To be suitable, the novel advance should have the potential for reduced environmental impact relative to the state of the art. Green Chemistry does not normally deal with research associated with 'end-of-pipe' or remediation issues.

推荐供应商

免责声明
本页面提供的学术期刊信息仅供参考和研究使用。我们与任何期刊出版商均无关联,也不处理投稿事宜。如有投稿相关咨询,请直接联系相关期刊出版商。
如发现页面信息有误,请发送邮件至 support@chemtradehub.com 联系我们。我们将及时核实并处理您的问题。