scholarly journals Production of Acrylic Acid from Biomass-Derived Fumaric Acid under Hydrothermal Conditions

Energies ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 5456
Author(s):  
Guodong Yin ◽  
Heng Zhong ◽  
Guodong Yao ◽  
Fangming Jin ◽  
Jianfu Zhao
Keyword(s):  
Acrylic Acid ◽  
Fumaric Acid ◽  
Value Added ◽  
Building Blocks ◽  
Hydrothermal Conditions ◽  
Acid Yield ◽  
Research Production ◽  
Excellent Activity ◽  
Biomass Resources ◽  
Solid Oxidant

Production of energy and chemicals from biomass resources has been regarded as one promising method to address the challenge of global warming. In this research, production of acrylic acid from fumaric acid, one of the biomass-derived building blocks, is proposed. CuO was employed as a solid oxidant, which showed excellent activity and selectivity for the production of acrylic acid, and water played an essential role in acting as not only a solvent but also a catalyst in this process. An optimum acrylic acid yield of 76.4% was successfully obtained after the reaction of fumaric acid with CuO at 300 °C for only 60 s.This research provides a green and highly efficient way to produce value-added chemicals from biomass-derived building blocks, and thus is promising for practical application.

scholarly journals Formation of Formic Acid from Glucose with Simultaneous Conversion of Ag2O to Ag under Mild Hydrothermal Conditions

2021 ◽  
Author(s):  
Runtian He ◽  
Jing Xu ◽  
Teng Ma ◽  
Jiong Cheng ◽  
Binbin Jin
Keyword(s):  
Formic Acid ◽  
Value Added ◽  
Low Carbon ◽  
Chemical Production ◽  
Hydrothermal Conditions ◽  
Simultaneous Reduction ◽  
Renewable Biomass ◽  
Novel Approach ◽  
Biomass Resources ◽  
Hydrogen Carrier

<p>Formation of formic acid from renewable biomass resources is of great interest since formic acid is a widely used platform chemical and has recently been regarded as an important liquid hydrogen carrier. Herein, a novel approach is reported for the conversion of glucose, the constituent carbohydrate from cellulose fraction of biomass, to formic acid under mild hydrothermal conditions with simultaneous reduction of Ag<sub>2</sub>O to Ag. Results showed that glucose was selectively converted to formic acid with an optimum yield of 40.7% at a mild reaction temperature of 135 for 30 min. In addition, Ag<sub>2</sub>O was used as a solid oxidant for the glucose oxidation, which avoids the use of traditionally dangerous liquid oxidant H<sub>2</sub>O<sub>2</sub>. Furthermore, complete conversion of Ag<sub>2</sub>O to Ag can be achieved. This study not only developed a new method for value-added chemical production from renewable biomass but also explored an alternative low-carbon and energy-saving route for silver extraction and recovery.</p>

scholarly journals Formation of Formic Acid from Glucose with Simultaneous Conversion of Ag2O to Ag under Mild Hydrothermal Conditions

2021 ◽  
Author(s):  
Runtian He ◽  
Jing Xu ◽  
Teng Ma ◽  
Jiong Cheng ◽  
Binbin Jin
Keyword(s):  
Formic Acid ◽  
Value Added ◽  
Low Carbon ◽  
Chemical Production ◽  
Hydrothermal Conditions ◽  
Simultaneous Reduction ◽  
Renewable Biomass ◽  
Novel Approach ◽  
Biomass Resources ◽  
Hydrogen Carrier

<p>Formation of formic acid from renewable biomass resources is of great interest since formic acid is a widely used platform chemical and has recently been regarded as an important liquid hydrogen carrier. Herein, a novel approach is reported for the conversion of glucose, the constituent carbohydrate from cellulose fraction of biomass, to formic acid under mild hydrothermal conditions with simultaneous reduction of Ag<sub>2</sub>O to Ag. Results showed that glucose was selectively converted to formic acid with an optimum yield of 40.7% at a mild reaction temperature of 135 for 30 min. In addition, Ag<sub>2</sub>O was used as a solid oxidant for the glucose oxidation, which avoids the use of traditionally dangerous liquid oxidant H<sub>2</sub>O<sub>2</sub>. Furthermore, complete conversion of Ag<sub>2</sub>O to Ag can be achieved. This study not only developed a new method for value-added chemical production from renewable biomass but also explored an alternative low-carbon and energy-saving route for silver extraction and recovery.</p>

A threefold interpenetrated two-dimensional zinc(II) supramolecular architecture based on 3-nitrobenzoic acid and 4,4′-bipyridine

2016 ◽  
Vol 72 (2) ◽  
pp. 128-132 ◽  
Author(s):  
Long Tang ◽  
Ji-Jiang Wang ◽  
Feng Fu ◽  
Sheng-Wen Wang ◽  
Qi-Rui Liu
Keyword(s):  
Coordination Polymers ◽  
Crystal Engineering ◽  
Critical Factor ◽  
Building Blocks ◽  
Zigzag Chain ◽  
Great Success ◽  
Supramolecular Architecture ◽  
Two Dimensional ◽  
Hydrothermal Conditions ◽  
Nitrobenzoic Acid

With regard to crystal engineering, building block or modular assembly methodologies have shown great success in the design and construction of metal–organic coordination polymers. The critical factor for the construction of coordination polymers is the rational choice of the organic building blocks and the metal centre. The reaction of Zn(OAc)2·2H2O (OAc is acetate) with 3-nitrobenzoic acid (HNBA) and 4,4′-bipyridine (4,4′-bipy) under hydrothermal conditions produced a two-dimensional zinc(II) supramolecular architecture,catena-poly[[bis(3-nitrobenzoato-κ2O,O′)zinc(II)]-μ-4,4′-bipyridine-κ2N:N′], [Zn(C7H4NO4)2(C10H8N2)]nor [Zn(NBA)2(4,4′-bipy)]n, which was characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis and single-crystal X-ray diffraction analysis. The ZnIIions are connected by the 4,4′-bipy ligands to form a one-dimensional zigzag chain and the chains are decorated with anionic NBA ligands which interact further through aromatic π–π stacking interactions, expanding the structure into a threefold interpenetrated two-dimensional supramolecular architecture. The solid-state fluorescence analysis indicates a slight blue shift compared with pure 4,4′-bipyridine and HNBA.

scholarly journals Thermophilic Degradation of Hemicellulose, a Critical Feedstock in the Production of Bioenergy and Other Value-Added Products

2020 ◽  
Vol 86 (7) ◽  
Author(s):  
Isaac Cann ◽  
Gabriel V. Pereira ◽  
Ahmed M. Abdel-Hamid ◽  
Heejin Kim ◽  
Daniel Wefers ◽  
...  
Keyword(s):  
Cell Wall ◽  
Plant Cell ◽  
Plant Cell Wall ◽  
Plant Biomass ◽  
Animal Feed ◽  
Value Added ◽  
Building Blocks ◽  
Economic Feasibility ◽  
Renewable Fuels ◽  
Microbial Enzymes

ABSTRACT Renewable fuels have gained importance as the world moves toward diversifying its energy portfolio. A critical step in the biomass-to-bioenergy initiative is deconstruction of plant cell wall polysaccharides to their unit sugars for subsequent fermentation to fuels. To acquire carbon and energy for their metabolic processes, diverse microorganisms have evolved genes encoding enzymes that depolymerize polysaccharides to their carbon/energy-rich building blocks. The microbial enzymes mostly target the energy present in cellulose, hemicellulose, and pectin, three major forms of energy storage in plants. In the effort to develop bioenergy as an alternative to fossil fuel, a common strategy is to harness microbial enzymes to hydrolyze cellulose to glucose for fermentation to fuels. However, the conversion of plant biomass to renewable fuels will require both cellulose and hemicellulose, the two largest components of the plant cell wall, as feedstock to improve economic feasibility. Here, we explore the enzymes and strategies evolved by two well-studied bacteria to depolymerize the hemicelluloses xylan/arabinoxylan and mannan. The sets of enzymes, in addition to their applications in biofuels and value-added chemical production, have utility in animal feed enzymes, a rapidly developing industry with potential to minimize adverse impacts of animal agriculture on the environment.

Bringing It All Together (Data Mining on an Enterprise Level)

2001 ◽  
pp. 119-136
Author(s):  
Stephan Kudyba ◽  
Richard Hoptroff
Keyword(s):  
Data Mining ◽  
Business Performance ◽  
Value Added ◽  
Building Blocks ◽  
Complex Nature ◽  
It Systems ◽  
Brick And Mortar ◽  
Key Issues ◽  
Enterprise Level ◽  
Business User

Up to now we have presented the fundamental building blocks to understanding the concept of data mining and addressed the prevailing applications within the corporate environment including both the “brick and mortar” style and e-commerce spectrums. The process does not stop here however. In order to implement mining on an enterprise basis, firms must overcome some potentially serious obstacles and address key issues. The more complex nature of data mining generally limits its use to a smaller population of individuals in a given firm, (although this is not always the case). Because of this, a common drawback to the process of effective Mining is the communication of value-added model results to corresponding users of this information. Just as there exists a gap between IT personnel, (those who know the technical side of systems) and the business user, (those who require IT systems to help solve their problems), there also exists a communication gap between the “data miners” and those who need to apply the resulting models to help solve their business problem. Other issues which must be considered before implementing an organization wide mining approach entails the development of total mining solutions instead of limiting applications to a few business problems. Decision makers must also avoid the trap of relying too heavily on mining results and must remember that these models are not crystal ball providers of perfect knowledge. Because of this, they must therefore monitor actual business performance against projected measures to maintain model effectiveness and accuracy.

scholarly journals A Case of Adaptive Laboratory Evolution (ALE): Biodegradation of Furfural by Pseudomonas pseudoalcaligenes CECT 5344

Genes ◽  
2019 ◽  
Vol 10 (7) ◽  
pp. 499 ◽  
Author(s):  
M. Isabel Igeño ◽  
Daniel Macias ◽  
Rafael Blasco
Keyword(s):  
Carbon Sources ◽  
Value Added ◽  
Cost Effective ◽  
Building Blocks ◽  
Yeast Fermentation ◽  
Adaptive Laboratory Evolution ◽  
Pseudomonas Pseudoalcaligenes ◽  
Hydroxymethyl Furfural ◽  
Double Recombination ◽  
Lag Period

Pseudomonas pseudoalcaligenes CECT 5344 is a bacterium able to assimilate cyanide as a nitrogen source at alkaline pH. Genome sequencing of this strain allowed the detection of genes related to the utilization of furfurals as a carbon and energy source. Furfural and 5-(hydroxymethyl) furfural (HMF) are byproducts of sugars production during the hydrolysis of lignocellulosic biomass. Since they inhibit the yeast fermentation to obtain bioethanol from sugars, the biodegradation of these compounds has attracted certain scientific interest. P. pseudoalcaligenes was able to use furfuryl alcohol, furfural and furoic acid as carbon sources, but after a lag period of several days. Once adapted, the evolved strain (R1D) did not show any more prolonged lag phases. The transcriptomic analysis (RNA-seq) of R1D revealed a non-conservative punctual mutation (L261R) in BN5_2307, a member of the AraC family of activators, modifying the charge of the HTH region of the protein. The inactivation of the mutated gene in the evolved strain by double recombination reverted to the original phenotype. Although the bacterium did not assimilate HMF, it transformed it into value-added building blocks for the chemical industry. These results could be used to improve the production of cost-effective second-generation biofuels from agricultural wastes.

scholarly journals Value-Added Bio-Chemicals Commodities from Catalytic Conversion of Biomass Derived Furan-Compounds

Catalysts ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 895
Author(s):  
Aitziber Iriondo ◽  
Ion Agirre ◽  
Nerea Viar ◽  
Jesús Requies
Keyword(s):  
Renewable Resources ◽  
Petrochemical Industry ◽  
Raw Materials ◽  
Value Added ◽  
Building Blocks ◽  
Reaction Conditions ◽  
Potential Market ◽  
Forestry Residues ◽  
Industry Needs ◽  
Near Future

The depletion of fossil resources in the near future and the need to decrease greenhouse gas emissions lead to the investigation of using alternative renewable resources as raw materials. One of the most promising options is the conversion of lignocellulosic biomass (like forestry residues) into bioenergy, biofuels and biochemicals. Among these products, the production of intermediate biochemicals has become an important goal since the petrochemical industry needs to find sustainable alternatives. In this way, the chemical industry competitiveness could be improved as bioproducts have a great potential market. Thus, the main objective of this review is to describe the production processes under study (reaction conditions, type of catalysts, solvents, etc.) of some promising intermediate biochemicals, such as; alcohols (1,2,6-hexanetriol, 1,6-hexanetriol and pentanediols (1,2 and 1,5-pentanediol)), maleic anhydride and 5-alkoxymethylfuran. These compounds can be produced using 5-hydroxymethylfurfural and/or furfural, which they both are considered one of the main biomass derived building blocks.

scholarly journals Electrochemical CO2 Reduction to CO Catalyzed by 2D Nanostructures

Catalysts ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 98 ◽  
Author(s):  
Chaitanya B. Hiragond ◽  
Hwapyong Kim ◽  
Junho Lee ◽  
Saurav Sorcar ◽  
Can Erkey ◽  
...  
Keyword(s):  
Recent Progress ◽  
Co2 Reduction ◽  
Value Added ◽  
Cost Effective ◽  
Metal Chalcogenides ◽  
Two Dimensional ◽  
Practical Application ◽  
Electrochemical Co2 Reduction ◽  
Excellent Activity ◽  
Transition Metal Chalcogenides

Electrochemical CO2 reduction towards value-added chemical feedstocks has been extensively studied in recent years to resolve the energy and environmental problems. The practical application of electrochemical CO2 reduction technology requires a cost-effective, highly efficient, and robust catalyst. To date, vigorous research have been carried out to increase the proficiency of electrocatalysts. In recent years, two-dimensional (2D) graphene and transition metal chalcogenides (TMCs) have displayed excellent activity towards CO2 reduction. This review focuses on the recent progress of 2D graphene and TMCs for selective electrochemical CO2 reduction into CO.

Na2HPO4-modified NaY nanocrystallites: efficient catalyst for acrylic acid production through lactic acid dehydration

2014 ◽  
Vol 4 (5) ◽  
pp. 1376-1385 ◽  
Author(s):  
Junfeng Zhang ◽  
Yuling Zhao ◽  
Xinzhen Feng ◽  
Min Pan ◽  
Jing Zhao ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Acrylic Acid ◽  
Acid Production ◽  
Surface Acidity ◽  
Formation Rate ◽  
Structural Features ◽  
Efficient Catalyst ◽  
Acid Yield

An acrylic acid yield of 74.3% and a formation rate of 12.0 mmol gcat−1 h−1 have been achieved at 340 °C by lactic acid dehydration over Na2HPO4-modified NaY nanocrystallites (NaY-n) due to appropriate surface acidity together with the unique structural features of NaY-n.

Salts of maleic and fumaric acids with organic polyamines: comparison of isomeric acids as building blocks in supramolecular chemistry

2003 ◽  
Vol 59 (1) ◽  
pp. 100-117 ◽  
Author(s):  
Katharine F. Bowes ◽  
George Ferguson ◽  
Alan J. Lough ◽  
Christopher Glidewell
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Supramolecular Chemistry ◽  
Fumaric Acid ◽  
Maleic Acid ◽  
Rotation Axis ◽  
Three Dimensional ◽  
Building Blocks ◽  
Ionic Components ◽  
Acid Compound

Maleic acid and fumaric acid both readily form adducts with organic diamines: maleic acid usually forms 2:1 adducts with bases, while fumaric acid usually forms 1:1 adducts, and the supramolecular stuctures within the two series are not simply related. The 1:2 adducts formed by 1,2-bis(4-pyridyl)ethane and by 4,4′-bipyridyl, respectively, with maleic acid, compounds (1) and (2), are salts [{(diamine)H2}2+]·[(C4H3O4)−]2 in which the cations lie across a centre of inversion and a twofold rotation axis, respectively. The ions are linked by N—H...O hydrogen bonds into three-ion aggregates, which are further linked by C—H...O hydrogen bonds into two- and three-dimensional arrays, respectively. In the fumarate salts formed by 2,2′-dipyridylamine (1:1) and 1,4-diazabicyclo[2.2.2]octane (1:2), compounds (3) and (4), the ionic components are linked into molecular ladders. The 1:1 adduct of 4,4′-bipyridyl and fumaric acid, compound (5), contains two neutral components, both of which lie across centres of inversion; these components are linked into chains by a single O—H...N hydrogen bond and thence into sheets by C—H...O hydrogen bonds. The corresponding adduct formed by 1,4-diazabicyclo[2.2.2]octane, compound (6), is a salt that again contains chains linked into sheets by C—H...O hydrogen bonds. In the 1:1 adducts, compounds (7), (8) and (10), that are formed between 1,2-bis(4-pyridyl)ethane, 4,4′-trimethylenedipyridine and hexamethylenetetramine, respectively, with fumaric acid, and in the 1:2 adduct, compound (9), of 2,2′-dipyridylamine and maleic acid, the chains that are generated by the hard hydrogen bonds are linked by C—H...O hydrogen bonds to form, in each case, a single three-dimensional framework. In the 1:1 adduct, compound (11), of 2,2′-bipyridyl and fumaric acid the hydrogen bonds generate two interwoven three-dimensional frameworks.

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