Spherical NiCo-MOFs catalytic hydrogenolysis of lignin dimers and enzymatic lignin to value-added liquid fuels under nitrogen atmosphere

Fuel ◽  
2022 ◽  
Vol 315 ◽  
pp. 123156
Author(s):  
Minghao Zhou ◽  
Chengjun Tang ◽  
Jing Li ◽  
Haihong Xia ◽  
Peng Liu ◽  
...  
Keyword(s):  
Value Added ◽  
Nitrogen Atmosphere ◽  
Liquid Fuels ◽  
Catalytic Hydrogenolysis

scholarly journals Feedstock-Dependent Phosphate Recovery in a Pilot-Scale Hydrothermal Liquefaction Bio-Crude Production

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 379 ◽  
Author(s):  
Ekaterina Ovsyannikova ◽  
Andrea Kruse ◽  
Gero C. Becker
Keyword(s):  
Value Added ◽  
Theoretical Data ◽  
Pilot Scale ◽  
Hydrothermal Liquefaction ◽  
Liquid Fuels ◽  
Small Scale ◽  
Catalytic Upgrading ◽  
A Value ◽  
Starting Point ◽  
Full Analysis

Microalgae (Spirulina) and primary sewage sludge are considerable feedstocks for future fuel-producing biorefinery. These feedstocks have either a high fuel production potential (algae) or a particularly high appearance as waste (sludge). Both feedstocks bring high loads of nutrients (P, N) that must be addressed in sound biorefinery concepts that primarily target specific hydrocarbons, such as liquid fuels. Hydrothermal liquefaction (HTL), which produces bio-crude oil that is ready for catalytic upgrading (e.g., for jet fuel), is a useful starting point for such an approach. As technology advances from small-scale batches to pilot-scale continuous operations, the aspect of nutrient recovery must be reconsidered. This research presents a full analysis of relevant nutrient flows between the product phases of HTL for the two aforementioned feedstocks on the basis of pilot-scale data. From a partial experimentally derived mass balance, initial strategies for recovering the most relevant nutrients (P, N) were developed and proofed in laboratory-scale. The experimental and theoretical data from the pilot and laboratory scales are combined to present the proof of concept and provide the first mass balances of an HTL-based biorefinery modular operation for producing fertilizer (struvite) as a value-added product.

Non-thermal plasma induced photocatalytic conversion of light alkanes into high value-added liquid chemicals under near ambient conditions

2020 ◽  
Vol 56 (39) ◽  
pp. 5263-5266
Author(s):  
Aiguo wang ◽  
Shijun Meng ◽  
Hua Song
Keyword(s):  
Thermal Plasma ◽  
Value Added ◽  
Liquid Fuels ◽  
Ambient Conditions ◽  
Light Alkanes ◽  
Non Thermal Plasma

Non-thermal plasma induced photocatalytic transformation of light alkanes into high value-added liquid fuels or chemicals over Ti–Ga/UZSM-5 under near ambient conditions.

Valorisation of Glycerol through Catalytic Hydrogenolysis Routes for Sustainable Production of Value-Added C3 Chemicals: Current and Future Trends

2021 ◽  
Author(s):  
Adrian Loy Chun Minh ◽  
Shanthi Priya Samudrala ◽  
Sankar Bhattacharya
Keyword(s):  
Fossil Fuels ◽  
Value Added ◽  
Sustainable Production ◽  
Future Trends ◽  
Renewable Feedstocks ◽  
Significant Interest ◽  
Catalytic Hydrogenolysis

The search of sustainable routes for the production of C3 chemicals from renewable feedstocks have attracted significant interest from academic and industrial communities to alleviate the dependence on fossil fuels....

Ethylene Oligomerization on Ni2+ Single Sites within Lacunary Defects of Wells Dawson Polyoxometalates

2021 ◽  
Author(s):  
Yoonrae C Cho ◽  
Jessica Muhlenkamp ◽  
Allen Grayson Oliver ◽  
Jason C. Hicks
Keyword(s):  
Value Added ◽  
Ethylene Oligomerization ◽  
Liquid Fuels ◽  
Light Olefins ◽  
Essential Step

Oligomerization of light olefins has become an essential step to convert gaseous olefins to liquid fuels and value-added chemicals. Here, we report that the synthesis and application of nickel single...

scholarly journals Catalytic Production of Value-Added Chemicals and Liquid Fuels from Lignocellulosic Biomass

Chem ◽  
2019 ◽  
Vol 5 (10) ◽  
pp. 2520-2546 ◽  
Author(s):  
Yaxuan Jing ◽  
Yong Guo ◽  
Qineng Xia ◽  
Xiaohui Liu ◽  
Yanqin Wang
Keyword(s):  
Lignocellulosic Biomass ◽  
Value Added ◽  
Liquid Fuels

Catalytic hydrogenolysis of ethanol organosolv lignin

Holzforschung ◽  
2009 ◽  
Vol 63 (5) ◽  
Author(s):  
Máté Nagy ◽  
Kasi David ◽  
George J.P. Britovsek ◽  
Arthur J. Ragauskas
Keyword(s):  
Value Added ◽  
Size Exclusion ◽  
Low Grade ◽  
Homogeneous Hydrogenation ◽  
Hydrogenation Catalysts ◽  
Organosolv Lignin ◽  
Lower Oxygen ◽  
Exclusion Chromatography ◽  
Catalytic Hydrogenolysis ◽  
Raney Ni

Abstract The production of ethanol based on lignocellulosic materials will bring about the coproduction of significant amounts of under-utilized lignin. This study examines the potential of conventional heterogeneous and novel homogeneous catalysts for the selective cleavage of the aryl-O-aryl and aryl-O-aliphatic linkages of ethanol organosolv lignin to convert it from a low grade fuel to potential fuel precursors or other value added chemicals. The development of hydrogenolysis conditions that effectively increase the solubility of lignin were initially examined with Ru(Cl)2(PPh3)3 and demonstrated the ability to decrease the molecular weight and enhance the solubility of the lignin polymer. Later studies examined several heterogeneous and homogeneous hydrogenation catalysts at optimized reaction conditions resulting in 96.4% solubility with Ru(Cl)2(PPh3)3, increase in H/C ratio with Raney-Ni, Pt/C and extensive monomer formation with NaBH4/I2. The changes in molecular structure of lignin were followed by size exclusion chromatography, qualitative and quantitative NMR spectroscopy and elemental analysis. These studies demonstrated that aryl-O-aryl and aryl-O-aliphatic linkages could be cleaved and the hydrogenated lignin had a decrease in oxygen functionality and the formation of products with lower oxygen content.

scholarly journals Pyrolysis system to obtain carbonaceous material from rice husk used as a precursor

2020 ◽  
Vol 44 (172) ◽  
pp. 805-813
Author(s):  
Javier R. Javier R. ◽  
Ana B. Vacca-Casanova ◽  
Carlos A. Cuy-Hoyos
Keyword(s):  
Graphene Oxide ◽  
Rice Husk ◽  
Industrial Waste ◽  
Electronic Devices ◽  
Value Added ◽  
Carbonaceous Material ◽  
Nitrogen Atmosphere ◽  
Vibrational Response ◽  
Electron Scanning Microscopy ◽  
Development And Validation

We present the development and validation of a pyrolysis system with a controlled nitrogen atmosphere for the production of carbonaceous materials from biomass elements. Our objective was to use rice husk as a precursor to produce carbonaceous material and explore its application in different technological fields. In Colombia, over 800.000 tons of rice are produced every six months by the leading producing regions such as the Orinoquia region and the provinces of Tolima and Huila, among others. This system provides the opportunity to use agro-industrial waste such as rice husk, an environmental contaminator, and convert it into a useful and value-added material for the development of science and technology in emerging technological fields. Analyses performed using electron scanning microscopy (SEM) have shown that the synthesized material is a porous carbonaceous substance composed of irregular fibers with a hollow internal structure between 5 and 30 μm in size. The Raman spectra show a vibrational response of graphene oxide (GO) multilayer type. These results suggest the GO derived from rice husk can be a candidate for the development of applications in technological areas such as flexible electronic devices and systems, sensors, batteries, supercapacitors for energy storage, and bioremediation systems, among other technological applications.

scholarly journals Integrated Cascade Biorefinery Processes to Transform Woody Biomass Into Phenolic Monomers and Carbon Quantum Dots

2021 ◽  
Vol 9 ◽  
Author(s):  
Xue Chen ◽  
Jiubin Zhu ◽  
Wenlu Song ◽  
Ling-Ping Xiao
Keyword(s):  
Quantum Dots ◽  
High Performance ◽  
Fluorescent Sensor ◽  
Hydrothermal Process ◽  
Value Added ◽  
Carbon Quantum Dots ◽  
High Yield ◽  
Heavy Metal Cations ◽  
Catalytic Hydrogenolysis ◽  
Cost Efficient

A novel cascade biorefinery strategy toward phenolic monomers and carbon quantum dots (CQDs) is proposed here via coupling catalytic hydrogenolysis and hydrothermal treatment. Birch wood was first treated with catalytic hydrogenolysis to afford a high yield of monomeric phenols (44.6 wt%), in which 4-propanol guaiacol (10.2 wt%) and 4-propanol syringol (29.7 wt%) were identified as the two major phenolic products with 89% selectivity. An available carbohydrate pulp retaining 82.4% cellulose and 71.6% hemicellulose was also obtained simultaneously, which was further used for the synthesis of CQDs by a one-step hydrothermal process. The as-prepared CQDs exhibited excellent selectivity and detection limits for several heavy metal cations, especially for Fe3+ ions in an aqueous solution. Those cost-efficient CQDs showed great potential in fluorescent sensor in situ environmental analyses. These findings provide a promising path toward developing high-performance sensors on environmental monitoring and a new route for the high value-added utilization of lignocellulosic biomass.

scholarly journals A Review of Microwave Assisted Liquefaction of Ligninin Hydrogen Donor Solvents: Effect of Solvents and Catalysts

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2877 ◽  
Author(s):  
Minghao Zhou ◽  
Junming Xu ◽  
Jianchun Jiang ◽  
Brajendra Sharma
Keyword(s):  
Large Scale ◽  
Heterogeneous Catalysts ◽  
Value Added ◽  
Hydrogen Donor ◽  
Liquid Fuels ◽  
High Catalytic Activity ◽  
Scale Production ◽  
Microwave Assisted ◽  
Donor Solvent ◽  
Liquefaction Process

Lignin, a renewable source of aromatic chemicals in nature, has attracted increasing attention due to its structure and application prospect. Catalytic solvolysis has developed as a promising method for the production of value-added products from lignin. The liquefaction process is closely associated with heating methods, catalysts and solvents. Microwave assisted lignin liquefaction in hydrogen donor solvent with the presence of catalysts has been confirmed to be effective to promote the production of liquid fuels or fine chemicals. A great number of researchers should be greatly appreciated on account of their contributions on the progress of microwave technology in lignin liquefaction. In this study, microwave assisted liquefaction of lignin in a hydrogen donor solvent is extensively overviewed, concerning the effect of different solvents and catalysts. This review concludes that microwave assisted liquefaction is a promising technology for the valorization of lignin, which could reduce the reaction time, decrease the reaction temperature, and finally fulfill the utilization of lignin in a relatively mild condition. In the future, heterogeneous catalysts with high catalytic activity and stability need to be prepared to achieve the need for large-scale production of high-quality fuels and value-added chemicals from lignin.

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