Production of Alkoxyl-Functionalized Cyclohexylamines from Lignin-Derived Guaiacol

2021 ◽  
Author(s):  
Bingxiao Zheng ◽  
Hai-Hong Wu ◽  
Jinliang Song ◽  
Wei Wu ◽  
Xuelei Mei ◽  
...  
Keyword(s):  
Value Added ◽  
Platform Chemicals ◽  
Lignin Utilization ◽  
Nitrogen Containing Compounds

Transformation of renewable lignin-based platform chemicals into value-added nitrogen-containing compounds is an emerging strategy for lignin utilization. However, multi reactive sites on these platform chemicals afford it being challenging to...

Modulation in Ru and Cu nanoparticles contents over CuAlPO-5 in synergistic enhancement in the selective reduction and oxidation of biomass-derived furan based alcohols and carbonyls

2021 ◽  
Author(s):  
Abhinav Kumar ◽  
Rajaram Bal ◽  
Rajendra Srivastava
Keyword(s):  
Selective Reduction ◽  
Value Added ◽  
Cu Nanoparticles ◽  
Platform Chemicals ◽  
Synergistic Enhancement ◽  
Reduction And Oxidation ◽  
Significant Attention ◽  
Lignocellulose Biomass

Furfural (FAL) and 5-hydroxymethylfurfural (HMF) are important and sustainable platform chemicals. They are produced from lignocellulose biomass and attract significant attention as precursors for producing value-added chemicals and fuels. The...

scholarly journals Mini-Review on the Synthesis of Furfural and Levulinic Acid from Lignocellulosic Biomass

Processes ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 1234
Author(s):  
Zhiwei Jiang ◽  
Di Hu ◽  
Zhiyue Zhao ◽  
Zixiao Yi ◽  
Zuo Chen ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Lignocellulosic Biomass ◽  
Catalytic System ◽  
Levulinic Acid ◽  
Value Added ◽  
Environmental Issues ◽  
Alternative Route ◽  
Catalytic Systems ◽  
Renewable Biomass ◽  
Platform Chemicals

Efficient conversion of renewable biomass into value-added chemicals and biofuels is regarded as an alternative route to reduce our high dependence on fossil resources and the associated environmental issues. In this context, biomass-based furfural and levulinic acid (LA) platform chemicals are frequently utilized to synthesize various valuable chemicals and biofuels. In this review, the reaction mechanism and catalytic system developed for the generation of furfural and levulinic acid are summarized and compared. Special efforts are focused on the different catalytic systems for the synthesis of furfural and levulinic acid. The corresponding challenges and outlooks are also observed.

Sustainable production of liquid biofuels and value-added platform chemicals by hydrodeoxygenation of lignocellulosic bio-oil over a carbon–neutral Mo2C/CNF catalyst

2021 ◽  
Vol 405 ◽  
pp. 126705
Author(s):  
Javier Remón ◽  
Marina Casales ◽  
Jesús Gracia ◽  
María S. Callén ◽  
José Luis Pinilla ◽  
...  
Keyword(s):  
Value Added ◽  
Sustainable Production ◽  
Platform Chemicals ◽  
Bio Oil ◽  
Carbon Neutral

scholarly journals Recent Advances in Photocatalytic Transformation of Carbohydrates Into Valuable Platform Chemicals

2021 ◽  
Vol 3 ◽  
Author(s):  
Huan Chen ◽  
Kun Wan ◽  
Fangjuan Zheng ◽  
Zhuo Zhang ◽  
Hongyu Zhang ◽  
...  
Keyword(s):  
Solar Energy ◽  
Scientific Community ◽  
Value Added ◽  
Reaction Pathways ◽  
Future Perspective ◽  
Reaction Conditions ◽  
Catalytic Systems ◽  
Selective Transformation ◽  
Platform Chemicals ◽  
Broad Interest

In response to the less accessible fossil resources and deteriorating environmental problems, catalytic conversion of the abundant and renewable lignocellulosic biomass to replace fossil resources for the production of value-added chemicals and fuels is of great importance. Depolymerization of carbohydrate and its derivatives can obtain a series of C5-C6 monosaccharides (e.g., glucose and xylose) and their derived platform compounds (e.g., HMF and furfural). Selective transformation of lignocellulose using sustainable solar energy via photocatalysis has attract broad interest from a growing scientific community. The unique photogenerated reactive species (e.g., h+, e−, •OH, •O2−, and 1O2), novel reaction pathways as well as the mild reaction conditions make photocatalysis a “dream reaction.” This review is aimed to provide an overview of the up-to-date contributions achieved in the selective photocatalytic transformation of carbohydrate and its derivatives. Photocatalytic methods, properties and merits of different catalytic systems are well summarized. We then put forward future perspective and challenges in this field.

scholarly journals One-pot conversion of biomass-derived xylose and furfural into levulinate esters via acid catalysis

2017 ◽  
Vol 53 (20) ◽  
pp. 2938-2941 ◽  
Author(s):  
Xun Hu ◽  
Shengjuan Jiang ◽  
Liping Wu ◽  
Shuai Wang ◽  
Chun-Zhu Li
Keyword(s):  
Acid Ester ◽  
Levulinic Acid ◽  
Acid Catalysis ◽  
Value Added ◽  
One Pot ◽  
Platform Chemicals

Via acid catalysis in dimethoxymethane/methanol, both C5 sugars and C6 sugars, derived from hemicellulose and cellulose, could be simultaneously converted into levulinic acid/ester, the platform chemicals for manufacturing value-added chemicals and biofuels.

Liquefaction of poplar biomass for value-added platform chemicals

Cellulose ◽  
2018 ◽  
Vol 25 (8) ◽  
pp. 4663-4675 ◽  
Author(s):  
Qiaolong Zhai ◽  
Fanglin Li ◽  
Fei Wang ◽  
Junming Xu ◽  
Jianchun Jiang ◽  
...  
Keyword(s):  
Value Added ◽  
Platform Chemicals

scholarly journals Metabolic Engineering of a Glycerol-Oxidative Pathway in Lactobacillus panis PM1 for Utilization of Bioethanol Thin Stillage: Potential To Produce Platform Chemicals from Glycerol

2014 ◽  
Vol 80 (24) ◽  
pp. 7631-7639 ◽  
Author(s):  
Tae Sun Kang ◽  
Darren R. Korber ◽  
Takuji Tanaka
Keyword(s):  
Lactic Acid ◽  
Triosephosphate Isomerase ◽  
Value Added ◽  
Dependent Manner ◽  
Bioethanol Production ◽  
Thin Stillage ◽  
Content Type ◽  
Platform Chemicals ◽  
Wide Range ◽  
Oxidative Pathway

ABSTRACTLactobacillus panisPM1 has the ability to produce 1,3-propanediol (1,3-PDO) from thin stillage (TS), which is the major waste material after bioethanol production, and is therefore of significance. However, the fact thatL. panisPM1 cannot use glycerol as a sole carbon source presents a considerable problem in terms of utilization of this strain in a wide range of industrial applications. Accordingly,L. panisPM1 was genetically engineered to directly utilize TS as a fermentable substrate for the production of valuable platform chemicals without the need for exogenous nutrient supplementation (e.g., sugars and nitrogen sources). An artificial glycerol-oxidative pathway, comprised of glycerol facilitator, glycerol kinase, glycerol 3-phosphate dehydrogenase, triosephosphate isomerase, and NADPH-dependent aldehyde reductase genes ofEscherichia coli, was introduced intoL. panisPM1 in order to directly utilize glycerol for the production of energy for growth and value-added chemicals. A pH 6.5 culture converted glycerol to mainly lactic acid (85.43 mM), whereas a significant amount of 1,3-propanediol (59.96 mM) was formed at pH 7.5. Regardless of the pH, ethanol (82.16 to 83.22 mM) was produced from TS fermentations, confirming that the artificial pathway metabolized glycerol for energy production and converted it into lactic acid or 1,3-PDO and ethanol in a pH-dependent manner. This study demonstrates the cost-effective conversion of TS to value-added chemicals by the engineered PM1 strain cultured under industrial conditions. Thus, application of this strain or these research findings can contribute to reduced costs of bioethanol production.

scholarly journals Conversion of Cellulose into Value-Added Products

2021 ◽  
Author(s):  
Lethiwe D. Mthembu ◽  
Rishi Gupta ◽  
Nirmala Deenadayalu
Keyword(s):  
Fossil Fuels ◽  
Fossil Fuel ◽  
Value Added ◽  
Renewable Sources ◽  
Platform Chemicals ◽  
Rapid Industrialization ◽  
Alternate Source ◽  
Value Added Products

Rapid industrialization has led to development of various platform chemicals and fossil fuel refinery is one of the mainstreams for their production. However continuous depletion of fossil fuels reserves has led an urge to look for alternate source of feedstocks. Among various renewable sources, biomass is found to be most sustainable as it is replaced naturally. Biomass by virtue of its nature is comprised of various recalcitrant polymers and cellulose is one of them, which can be used for the generation of various platform chemicals. This chapter gives a background of cellulose and illustrate platform chemicals that can be produced from cellulose.

scholarly journals Manganese Catalyzed Reformation of Ethylene Glycol to Glycolic acid and Lactic Acid

2021 ◽  
Author(s):  
Satyadeep Waiba ◽  
BIplab Maji
Keyword(s):  
Lactic Acid ◽  
Ethylene Glycol ◽  
Glycolic Acid ◽  
Value Added ◽  
Hydrogen Gas ◽  
Catalyst Loading ◽  
Pure Hydrogen ◽  
Platform Chemicals ◽  
Dehydrogenative Coupling ◽  
The Reformation

Conversion of readily available feedstocks to valuable platform chemicals via a sustainable catalytic pathway has always been one of the key focuses of synthetic chemists. Cheaper, less toxic, and more abundant base metals as a catalyst for performing such transformations provide an additional boost. In this context, herein, we report a reformation of readily available feedstock, ethylene glycol, to value-added platform molecules, glycolic acid, and lactic acid. A bench stable base metal complex {[HN(C2H4PPh2)2]Mn(CO)2Br}, Mn-I, known as Mn-PhMACHO, catalyzed the reformation of ethylene glycol to glycolic acid at 140 oC in high selectivity with a turnover number TON = 2400, surpassing previously used homogeneous catalysts for such a reaction. Pure hydrogen gas is evolved without the need for an acceptor. On the other hand, a bench stable Mn(I)-complex, {(iPrPN5P)Mn(CO)2Br}, Mn-III, with a triazine backbone, efficiently catalyzed the acceptorless dehydrogenative coupling of ethylene glycol and methanol for the synthesis of lactic acid, even at a ppm level of catalyst loading, reaching the TON of 11,500. Detailed mechanistic studies were performed to elucidate the involvements of different manganese(I)-species during the catalysis.

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