Towards lignin valorisation: comparing homogeneous catalysts for the aerobic oxidation and depolymerisation of organosolv lignin

RSC Advances ◽  
2015 ◽  
Vol 5 (86) ◽  
pp. 70502-70511 ◽  
Author(s):  
Christian Díaz-Urrutia ◽  
Wei-Ching Chen ◽  
Charles-Oneil Crites ◽  
Jennifer Daccache ◽  
Ilia Korobkov ◽  
...  
Keyword(s):  
Renewable Resources ◽  
Aerobic Oxidation ◽  
Homogeneous Catalysts ◽  
Organosolv Lignin ◽  
Potential Source ◽  
Unique Potential

Lignin is a unique potential source of aromatic chemicals derived from renewable resources.

Comparison of Copper and Vanadium Homogeneous Catalysts for Aerobic Oxidation of Lignin Models

ACS Catalysis ◽  
2011 ◽  
Vol 1 (7) ◽  
pp. 794-804 ◽  
Author(s):  
Baburam Sedai ◽  
Christian Díaz-Urrutia ◽  
R. Tom Baker ◽  
Ruilian Wu ◽  
L. A. “Pete” Silks ◽  
...  
Keyword(s):  
Aerobic Oxidation ◽  
Homogeneous Catalysts

scholarly journals The Distinctive Morphology of `Fragaria multicipita' Is Due to Phytoplasma

HortScience ◽  
1998 ◽  
Vol 33 (6) ◽  
pp. 1069-1072 ◽  
Author(s):  
Rasa Jomantiene ◽  
Robert E. Davis ◽  
Ellen L. Dally ◽  
John L. Maas ◽  
Joseph D. Postman
Keyword(s):  
Genetic Diversity ◽  
Growth Form ◽  
Plant Population ◽  
Rare Plant ◽  
Additional Species ◽  
Potential Source ◽  
Distinctive Morphology ◽  
Unique Potential

The rare plant, Fragaria multicipita Fern., was characterized by an unusual vegetative morphology that was long presumed to be suggestive of an ice front relict. While an additional species of Fragaria would be a potential source of genetic diversity for enhancing cultivated strawberry germplasm, evidence now indicates that such potential is not present in F. multicipita. Grafting of F. multicipita to F. chiloensis Duchesne resulted in transmission of a subgroup 16SrVI-B phytoplasma to, and the development of multicipital growth in, F. chiloensis. The results indicated that F. multicipita is a phytoplasma-diseased aberrant growth form of F. virginiana Duchesne and is an unfounded taxon. It is apparent that this plant population offers no unique potential for increasing genetic diversity in cultivated strawberry germplasm, but the phytoplasma may be capable of infecting commercial strawberry.

Synthesis of New Chiral Mn(III)-Salen Complexes as Recoverable and Reusable Homogeneous Catalysts for Asymmetric Epoxidation of Styrenes and Chromenes

2021 ◽  
Author(s):  
Pooja Chaudhary ◽  
Geeta Devi Yadav ◽  
Krishna K. Damodaran ◽  
Surendra Singh
Keyword(s):  
Aerobic Oxidation ◽  
Inert Atmosphere ◽  
Asymmetric Epoxidation ◽  
Homogeneous Catalysts ◽  
Salen Complexes ◽  
Salen Ligands

New chiral Mn(III)-salen complexes 1a-e and 2a-e were synthesized from the reaction of C2-symmetric chiral salen ligands and Mn(CH3COO)2.4H2O under an inert atmosphere followed by aerobic oxidation. These complexes were...

How SIMS microscopy can be used in medicine

1992 ◽  
Vol 50 (2) ◽  
pp. 1602-1603
Author(s):  
Philippe Fragu
Keyword(s):  
Mass Spectrometry ◽  
Biomedical Applications ◽  
Secondary Ion Mass Spectrometry ◽  
Chemical Elements ◽  
Biological Applications ◽  
The Past ◽  
Potential Source ◽  
Secondary Ion ◽  
Chemical Integrity ◽  
Scientific Endeavour

The identification, localization and quantification of intracellular chemical elements is an area of scientific endeavour which has not ceased to develop over the past 30 years. Secondary Ion Mass Spectrometry (SIMS) microscopy is widely used for elemental localization problems in geochemistry, metallurgy and electronics. Although the first commercial instruments were available in 1968, biological applications have been gradual as investigators have systematically examined the potential source of artefacts inherent in the method and sought to develop strategies for the analysis of soft biological material with a lateral resolution equivalent to that of the light microscope. In 1992, the prospects offered by this technique are even more encouraging as prototypes of new ion probes appear capable of achieving the ultimate goal, namely the quantitative analysis of micron and submicron regions. The purpose of this review is to underline the requirements for biomedical applications of SIMS microscopy.Sample preparation methodology should preserve both the structural and the chemical integrity of the tissue.

The design and catalytic performance of molybdenum active sites on an MCM-41 framework for the aerobic oxidation of 5-hydroxymethylfurfural to 2,5-diformylfuran

2019 ◽  
Vol 9 (3) ◽  
pp. 811-821 ◽  
Author(s):  
Zhao-Meng Wang ◽  
Li-Juan Liu ◽  
Bo Xiang ◽  
Yue Wang ◽  
Ya-Jing Lyu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Active Sites ◽  
Aerobic Oxidation ◽  
Catalytic Performance ◽  
Mcm 41

The catalytic activity decreases as –(SiO)3Mo(OH)(O) > –(SiO)2Mo(O)2 > –(O)4–MoO.

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