Solid-State Decomposition of Alkoxyfuroic Acids in the Presence of Microcrystalline Cellulose

1983 ◽  
Vol 72 (10) ◽  
pp. 1149-1154 ◽  
Author(s):  
J.T. Carstensen ◽  
Rohit C. Kothari
Keyword(s):  
Solid State ◽  
Microcrystalline Cellulose ◽  
Solid State Decomposition

Solid state decomposition studies on metal salicylates

1987 ◽  
Vol 114 (1) ◽  
pp. 145-152 ◽  
Author(s):  
Pertti Kokkonen ◽  
Lauri H.J. Lajunen ◽  
Leena Palmu
Keyword(s):  
Solid State ◽  
Solid State Decomposition

scholarly journals An Under-Appreciated Source of Reproducibility Issues in Cross-Coupling: Solid-State Decomposition of Primary Sodium Alkoxides in Air

ACS Catalysis ◽  
2020 ◽  
pp. 502-508
Author(s):  
Robert Wethman ◽  
Joseph Derosa ◽  
Van T. Tran ◽  
Taeho Kang ◽  
Omar Apolinar ◽  
...  
Keyword(s):  
Solid State ◽  
Cross Coupling ◽  
Solid State Decomposition

Electron Tomography Analysis of Reaction Path during Formation of Nanoporous NiO by Solid State Decomposition

2014 ◽  
Vol 14 (5) ◽  
pp. 2453-2459 ◽  
Author(s):  
A. K. Shukla ◽  
P. Ercius ◽  
A. R. S. Gautam ◽  
J. Cabana ◽  
U. Dahmen
Keyword(s):  
Solid State ◽  
Reaction Path ◽  
Electron Tomography ◽  
Solid State Decomposition ◽  
Tomography Analysis

Studies on fluorescence of cellulosics

Holzforschung ◽  
2007 ◽  
Vol 61 (5) ◽  
pp. 504-508 ◽  
Author(s):  
Alain Castellan ◽  
Reinaldo Ruggiero ◽  
Elisabete Frollini ◽  
Ludmila A. Ramos ◽  
Christine Chirat
Keyword(s):  
Solid State ◽  
Microcrystalline Cellulose ◽  
Woody Plants ◽  
Average Molecular Weight ◽  
Homogeneous Medium ◽  
Fluorescence Emission ◽  
Excitation Wavelength ◽  
Experimental Conditions ◽  
Fluorescence Emission Spectra ◽  
Cotton Linters

Abstract Steady-state fluorescence emission spectra of various celluloses were measured at an excitation wavelength of 320 nm. Various spectra recorded in the solid state were compared: (1) ECF bleached papers made of hardwood, the anhydroglucose units of which were chemically modified at C1 and C6 or C2 and C3 positions with carboxylic groups; (2) microcrystalline cellulose; (3) cotton linters; and (4) delignified sisal fibers (mercerized or not). Fluorescence emission was quite independent of the carboxylic acid content and average molecular weight (determined by viscosimetry) of the cellulose polymers. Microcrystalline cellulose (Avicel), cotton linters, and mercerized delignified sisal cellulose were acetylated in homogeneous medium (DMAc/LiCl as solvent system) to obtain soluble polymers in dichloromethane for comparison of spectra recorded in the solid and liquid states. Fluorescence of cellulose acetates in solution (CH2Cl2) and in the solid state was compared under similar experimental conditions to non-esterified celluloses in the solid state. The importance of the solid state for fluorescence emission could be demonstrated. Fluorophores are present in minute amounts in the polymer and their favorable energy transfer for excitation in the solid state likely enhances fluorescence emission. Among numerous fluorophores, dityrosine appeared to be a good candidate for fluorescence because it displayed emission in the fluorescence range of cellulose. Dityrosine is an amino acid involved in the lignification of non-woody plants. Mercerized sisal impregnated with tyrosine in the presence of peroxidase and hydrogen peroxide did not show enhanced emission, in contrast to para-hydroxycinnamic acid (coumaric acid), which is also involved in the lignification process at least for non-woody plants. The origin of cellulose fluorescence remains uncertain and appears to have several origins. This study clearly underlines the importance of the solid state for enhancing fluorophore emission.

scholarly journals The role of MgB12H12 in the hydrogen desorption process of Mg(BH4)2

2015 ◽  
Vol 51 (4) ◽  
pp. 700-702 ◽  
Author(s):  
Yigang Yan ◽  
Arndt Remhof ◽  
Daniel Rentsch ◽  
Andreas Züttel
Keyword(s):  
Solid State ◽  
Hydrogen Desorption ◽  
Decomposition Process ◽  
Desorption Process ◽  
Solid State Decomposition

Throughout the solid-state decomposition process of Mg(BH4)2, the MgB12H12 phase does not exist in the solid residues after decomposition.

A simple method of determining the activation energy of an isothermal solid-state decomposition reaction

1980 ◽  
Vol 18 (1) ◽  
pp. 185-191 ◽  
Author(s):  
S. R. Dharwadkar ◽  
A. B. Phadnis ◽  
M. S. Chandrasekharaiah ◽  
M. D. Karkhanavala
Keyword(s):  
Activation Energy ◽  
Solid State ◽  
Decomposition Reaction ◽  
Simple Method ◽  
Solid State Decomposition
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