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A Versatile CO-assisted Direct Reductive Amination of 5-Hydroxymethylfurfural Catalyzed by Supported Gold

Fri, 07/21/2017 - 10:34
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC01579H, PaperMing-Ming Zhu, Lei Tao, Qi Zhang, Jing Dong, Yong-Mei Liu, Heyong He, Yong Cao
Reductive amination (RA) constitutes an attractive and practical strategy for discovering protocols capable of converting biomass into valuable N-containing compounds. Described herein is a versatile and sustainable RA of 5-hydroxymethyl-furfural...
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Categories: Green Technology News

ON THE STRUCTURE OF SOFTWOOD KRAFT LIGNIN

Thu, 07/20/2017 - 11:16
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC01812F, PaperClaudia Crestini, Heiko Lange, Marco Sette, D. S. Argyropoulos
Two constitutional structural schemes are proposed attempting to unify and rationalize a series of focused NMR and chromatographic determinations aimed at providing an integrated picture for the structure of softwood...
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Lignin Transformations for High Value Applications: Towards Targeted Modifications Using Green Chemistry

Thu, 07/20/2017 - 08:11
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC01479A, Critical ReviewSebastien Gillet, Mario Aguedo, Laurene Petitjean, Ana Rita C. Morais, Andre M da Costa Lopes, Rafal Marcin Lukasik, Paul Anastas
Lignin represents a considerable source of renewable and bio-based carbon. Pulping processes enable lignin, together with all components of the lignocellulosic biomass, to enter valorizable streams. A current key objective...
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Categories: Green Technology News

Facile and sustainable synthesis of sodium lignosulfonate derived hierarchical porous carbons for supercapacitors with high volumetric energy density

Thu, 07/20/2017 - 06:09
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC01434A, PaperJie Pang, Wenfeng Zhang, Jinliang Zhang, Gaoping Cao, Mingfang Han, Yusheng Yang
Interconnected hierarchical porous carbon was successfully prepared by directly carbonization of industrial waste sodium lignosulfonate without additional templating and activation agent. The as-prepared carbon sample shows a moderate specific surface...
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The carbon nanotube formation parameter space: data mining and mechanistic understanding for efficient resource use

Thu, 07/20/2017 - 06:09

Green Chem., 2017, Advance Article
DOI: 10.1039/C7GC01421J, PaperWenbo Shi, Ke Xue, Eric R. Meshot, Desiree L. Plata
Data-mining of the carbon nanotube growth parameters informed strategies to reduce energy and resource consumption for chemical vapor deposition processes.
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Immobilization engineering - How to design advanced sol-gel systems for biocatalysis?

Wed, 07/19/2017 - 13:54
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC00896A, PaperDiana Weiser, Flora Nagy, Gergely Banoczi, Mark Olah, Attila Farkas, Andras Szilagyi, Krisztina Laszlo, Akos Gellert, Gyorgy Marosi, Sandor Kemeny, Laszlo Poppe
Immobilization engineering approach using bioinformatics and experimental design tools was applied to improve sol-gel enzyme entrapment methodology. This strategy was used for immobilization of lipase B from Candida antarctica (CaLB),...
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One-pot Integrated Processing of Biopolymers to Furfurals in Molten Salt Hydrate: Understanding Synergy in Acidity

Wed, 07/19/2017 - 09:52
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC01709J, PaperSunitha Sadula, Owen Oesterling, Andrew Nardone, Brian Dinkelacker, Basudeb Saha
Furfural and 5-hydroxymethylfurfual (HMF), promising renewable platforms for bio-products, manufacturing with high carbon efficiency is a challenge because of their undesired polymerization to humins. Here, we present an integrated process...
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An introduction to zwitterionic salts

Wed, 07/19/2017 - 05:49

Green Chem., 2017, Advance Article
DOI: 10.1039/C7GC01523B, CommunicationMarijana Blesic, Brendan F. Gilmore, John D. Holbrey, Johan Jacquemin, Gaelle Level, Peter Nockemann, Lorenzo Stella
Zwitterionic salts: highly hydrophilic materials, incorporating some characteristics of zwitterions, ionic liquids, and inorganic salts with potential applications in the biomedical field and separation technology.
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Conversion of C5 carbohydrates into furfural catalyzed by a Lewis acidic ionic liquid in renewable [gamma]-valerolactone

Tue, 07/18/2017 - 05:27
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC01298E, PaperShurong Wang, Yuan Zhao, Haizhou Lin, Jingping Chen, Lingjun Zhu, Zhongyang Luo
For the purpose of building a green reaction system to produce furfural (FF), the conversion of two important pentoses from hemicellulose, namely xylose and arabinose, was investigated in an aqueous...
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Synergizing graphene oxide with microwave irradiation for efficient cellulose depolymerization into glucose

Mon, 07/17/2017 - 14:17
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC01691C, PaperElaine Gabutin Gabutin Mission, Armando T. Quitain, Mitsuru Sasaki, Tetsuya Kida
The abundance in hydroxyl groups neighboring the hydrolytic site ([small beta]-1,4 glycosidic bonds) in cellulose forms a tightly packed crystalline structure, and hence, is a major challenge in cellulose depolymerization into...
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Potassium isopropyl xanthate (PIX): an ultra-efficient palladium scavenger

Mon, 07/17/2017 - 08:13

Green Chem., 2017, Advance Article
DOI: 10.1039/C7GC01765K, CommunicationHong Ren, Christopher A. Strulson, Guy Humphrey, Rong Xiang, Guangtao Li, Donald R. Gauthier, Kevin M. Maloney
The increasing employment of palladium-catalyzed reactions in the synthesis of active pharmaceutical ingredients (APIs) has created a pressing need for ultra-efficient palladium removal of the resulting metal contaminants.
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Bioprivileged molecules: creating value from biomass

Mon, 07/17/2017 - 08:13

Green Chem., 2017, 19,3177-3185
DOI: 10.1039/C7GC00296C, PerspectiveBrent H. Shanks, Peter L. Keeling
Bioprivileged molecules generated from biomass can be converted to both novel molecules and drop-in replacements.
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A Two Phase System for Clean and High Yield Synthesis of Furylmethane Derivatives over -SO3H Functionalized Ionic Liquids

Fri, 07/14/2017 - 09:20
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC01654A, PaperSuhas H. Shinde, C. V. Rode
We report here a new and effective unique two-phase reaction system for high yield production of tri(furyl)methane from furfural and furan. This strategy included acidic aqueous phase (water + -SO3H...
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Role of oxygenates and effect of operating conditions in the deactivation of a Ni supported catalyst during the steam reforming of bio-oil

Fri, 07/14/2017 - 07:19
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC01432E, PaperAitor Ochoa, Borja Aramburu, Beatriz Valle, D Resasco, Javier Bilbao, Ana G. Gayubo, Pedro Castano
This work investigates the correlation of the reaction conditions (temperature and steam-to-carbon ratio (S/C)) and the reaction medium composition with the deactivation behavior of a Ni/La2O3-[small alpha]Al2O3 catalyst used in the...
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Informing rational design of graphene oxide through surface chemistry manipulations: properties governing electrochemical and biological activities

Thu, 07/13/2017 - 15:10

Green Chem., 2017, 19,2826-2838
DOI: 10.1039/C7GC00159B, PaperYan Wang, Leanne M. Gilbertson
The electrochemical and biological activities are synergistically driven by the physicochemical properties of graphene oxide and reduced graphene oxide.
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Intensification studies of heterogeneous catalysts: probing and overcoming catalyst deactivation during liquid phase operation

Wed, 07/12/2017 - 12:52

Green Chem., 2017, 19,2711-2728
DOI: 10.1039/C7GC00163K, Tutorial ReviewCeri Hammond
In addition to high levels of activity and selectivity, promising heterogeneous catalysts must also possess sufficient levels of stability. This tutorial review covers the topic of heterogeneous catalyst deactivation during liquid phase operation.
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Sustainable barrier materials based on polysaccharide polyelectrolyte complexes

Wed, 07/12/2017 - 10:50
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC00991G, PaperSnehasish Basu, Adam Plucinski, Jeff Catchmark
There is a need for sustainable, ecologically compatible barrier materials as a replacement for petroleum derived compounds for packaging and other applications that generate significant land and ocean pollution. Polysaccharides...
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Valuable new platform chemicals obtained by valorisation of a model succinic acid and bio-succinic acid with an ionic liquid and high-pressure carbon dioxide

Wed, 07/12/2017 - 06:48
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC00952F, PaperDaniel da Silva, Ewa Bogel-Lukasik
The potential application of biomass and catalysts is crucial to form a bridge between the emerging bio-based industry and the current process technology. Using this approach to succinic acid, a...
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Examples of Xylochemistry: Colorants and Polymers

Tue, 07/11/2017 - 08:37
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC01244F, PaperJonas Kuhlborn, Ann-Kathrin Danner, Holger Frey, Rishab Iyer, Anthony J Arduengo, Till Opatz
Against the backdrop of modern sustainable chemistry and valorization of biomass for chemical raw materials, the syntheses of indigo dyes and polyamides as representatives of two classes of everyday chemical...
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Continuous flow process for the production of 2,5-dimethylfuran from fructose using (non-noble metal based) heterogeneous catalysis

Tue, 07/11/2017 - 07:36
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC01055A, PaperMax Braun , Markus Antonietti
The abundant carbohydrate fructose is converted into two biofuel molecules, namely 2,5-dimethylfuran (DMF) and ethyllevulinate (EL) in a simple cascade flow reactor. With an overall yield of 85 % (38.5...
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