Plant lignocellulose‐based feedstocks hydrogenolysis into polyols over a new efficient nickel–tungsten catalyst

Xiao, Zhuqian; Xu, Yidan; Fan, Yu; Zhang, Qiang; Mao, Jianwei; Ji, Jianbing

doi:10.1002/apj.2153

Cited by 5 publications

(3 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Despite some unresolved issues, many reported catalysts possess excellent catalytic properties and stability in hydrothermal conditions, which allowed their successful testing not only in the conversion of pure microcrystalline cellulose, but also for cellulose containing materials such as cotton, cotton wool, paper (Ribeiro et al, 2017a,d, 2018b), wood lignocellulosic biomass (Yamaguchi et al, 2016; Ribeiro et al, 2018b; Xiao et al, 2018b; Pang et al, 2019), corn stalks, millet, sugarcane, etc. (Liu et al, 2017; Li et al, 2018a), which demonstrates a promising outlook for the future development of multi tonnage production of value-added chemicals and fuels from cellulose biomass.…”

Section: Discussionmentioning

confidence: 99%

Cellulose Conversion Into Hexitols and Glycols in Water: Recent Advances in Catalyst Development

et al. 2019

View full text Add to dashboard Cite

Conversion of biomass cellulose to value-added chemicals and fuels is one of the most important advances of green chemistry stimulated by needs of industry. Here we discuss modern trends in the development of catalysts for two processes of cellulose conversion: (i) hydrolytic hydrogenation with the formation of hexitols and (ii) hydrogenolysis, leading to glycols. The promising strategies include the use of subcritical water which facilitates hydrolysis, bifunctional catalysts which catalyze not only hydrogenation, but also hydrolysis, retro-aldol condensation, and isomerization, and pretreatment (milling) of cellulose together with catalysts to allow an intimate contact between the reaction components. An important development is the replacement of noble metals in the catalysts with earth-abundant metals, bringing down the catalyst costs, and improving the environmental impact.

show abstract

Section: Discussionmentioning

confidence: 99%

Cellulose Conversion Into Hexitols and Glycols in Water: Recent Advances in Catalyst Development

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Тем не менее, многие созданные катализаторы обладают хорошими каталитическими характеристиками и стабильностью в гидротермальных условиях, что позволило их успешно протестировать не только в процессе конверсии чистой, модельной микрокристаллической целлюлозы, но и реальных целлюлозосодержащих материалов, таких как вата, хлопок, бумага [66,67]; древесная лигноцеллюлозная биомасса [67][68][69][70]; стебли кукурузы, просо, сахарный тростник и др. [71,72], что говорит о реальной перспективе создания в будущем многотоннажных производств химикатов и топлива из целлюлозосодержащего сырья.…”

Section: заключениеunclassified

Conversion of Cellulose to Polyhydroal Alcohols in Water: A Review of Catalysts

Manaenkov¹,

Kislitsa²,

Матвеева³

2022

Вестник Тверского Государственного Университета. Серия: Химия

View full text Add to dashboard Cite

Целлюлоза - самый распространённый биополимер на Земле. Данный ресурс возобновляем, не имеет пищевой ценности для человека и ежегодно синтезируется в природе в огромных масштабах, способных полностью удовлетворить потребности в сырье современной химической и топливной промышленности. Благодаря наличию в структуре целлюлозы большого количества гидроксильных групп, одними из самых оптимальных вариантов её конверсии, обладающих высокой атомной эффективностью, являются процессы гидролитического гидрирования до гекситов (сорбита и маннита) и гидрогенолиза до гликолей (этилен- и пропиленгликоля). Оба процесса проводятся в гидротермальных условиях в присутствии катализаторов, эффективность действия которых, в данном случае, определяет эффективность процесса в целом. В данном обзоре рассмотрены наиболее интересные, с нашей точки зрения, каталитические системы для процесса конверсии целлюлозы в гекситы и гликоли, сведения о которых появились в литературе за последние несколько лет. Cellulose is the most abundant biopolymer on Earth. This resource is renewable, has no nutritional value for humans, and is annually synthesized in nature on a huge scale, capable of fully satisfying the needs for raw materials of the modern chemical and fuel industry. Due to the presence of a large number of hydroxyl groups in the cellulose structure, one of the most optimal options for its conversion, which have a high atomic efficiency, are the processes of hydrolytic hydrogenation to hexitols (sorbitol and mannitol) and hydrogenolysis to glycols (ethylene and propylene glycol). Both processes are carried out under hydrothermal conditions in the presence of catalysts, the effectiveness of which, in this case, determines the efficiency of the process as a whole. In this review, we consider the most interesting, from our point of view, catalytic systems for the conversion of cellulose to hexitols and glycols, information about which has appeared in the literature over the past few years.

show abstract

“…The black liquor produced by Kraft pulping, which comprises highly degraded lignin, is commonly burned for heat, while intact cellulose fibers are used to produce valuable products such as paper . Delignification pretreatment is vital to cellulose-fed processes because entanglement between the structural lignin network and linear cellulose makes lignocellulosic biomass recalcitrant. − Hence, lignin removal and valorization has become a hot research topic, with notable industrial progress such as the product “liquid wood”, registered as ARBOFORM by TECNARO …”

Section: Introductionmentioning

confidence: 99%

Organosolv Fractionation of Walnut Shell Biomass to Isolate Lignocellulosic Components for Chemical Upgrading of Lignin to Aromatics

2021

View full text Add to dashboard Cite

Renewable carbon sources are a rapidly growing field of research because of the finite supply of fossil carbon. The lignocellulosic biomass walnut shell (WS) is an attractive renewable feedstock because it has a high lignin content (38–44 wt %) and is an agricultural waste stream. Lignin, a major component of lignocellulosic biomass that is currently a waste stream in pulping processes, has unique potential for chemical upgrading because its subunits are aromatic. In the interest of improving the sustainability and reducing the environmental impact of biomass processing, valorization of agricultural waste streams is important. Herein, three lab-scale, batch organosolv procedures are explored in the interest of optimal isolation of protected WS lignin (WSL). One system uses acetic acid, one MeOH, and the final EtOH as the primary solvent. The optimal condition for protected WSL isolation, which resulted in a 64% yield, was methanol and dilute sulfuric acid with formaldehyde to act as a protecting group at 170 °C. Select samples were upgraded by hydrogenolysis over a nickel catalyst. Protected lignin recovered from the optimal condition showed 77% by weight conversion to monomeric phenols, demonstrating that the protected WSL can selectively afford high value products. One key finding from this study was that MeOH is a superior solvent for isolating WSL versus EtOH because the latter exhibited lignin recondensation. The second was that the Ni/C-catalyzed reductive catalytic fractionation (RCF) directly of WS biomass was not selective relative to RCF of isolated WSL; conversion of raw WS to monomers produced significantly more side products.

show abstract

Plant lignocellulose‐based feedstocks hydrogenolysis into polyols over a new efficient nickel–tungsten catalyst

Abstract: Here, we developed a new strategy for preparation of series of in-situ reduction bimetallic catalysts Ni-W/SiO 2 by introducing of reducing agent in the preparation process. And these catalysts were applied into the catalytic hydrogenolysis

Cited by 5 publications

References 38 publications

Cellulose Conversion Into Hexitols and Glycols in Water: Recent Advances in Catalyst Development

Cellulose Conversion Into Hexitols and Glycols in Water: Recent Advances in Catalyst Development

Conversion of Cellulose to Polyhydroal Alcohols in Water: A Review of Catalysts

Organosolv Fractionation of Walnut Shell Biomass to Isolate Lignocellulosic Components for Chemical Upgrading of Lignin to Aromatics

Contact Info

Product

Resources

About