New insensitive high-energy dense biopolymers from giant reed cellulosic fibers: synthesis, characterization, and non-isothermal decomposition kinetics

2021 ◽  
Author(s):  
Ahmed Fouzi Tarchoun ◽  
Djalal Trache ◽  
Thomas M. Klapoetke ◽  
Aimen Selmani ◽  
Mohamed Saada ◽  
...  
Keyword(s):  
High Energy ◽  
Decomposition Kinetics ◽  
Giant Reed ◽  
Isothermal Decomposition ◽  
Cellulosic Fibers

The aim of this research was the valorization of giant reed as an alternative bioresource material to produce new promising energetic biopolymers based on carbamated and nitrated ordinary cellulose and...

Synthesis, Characterization, and Thermal Decomposition Kinetics of Nitrogen-Rich Energetic Biopolymers from Aminated Giant Reed Cellulosic Fibers

2020 ◽  
Vol 59 (52) ◽  
pp. 22677-22689
Author(s):  
Ahmed Fouzi Tarchoun ◽  
Djalal Trache ◽  
Thomas M. Klapötke ◽  
Mekki Belmerabet ◽  
Amir Abdelaziz ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Decomposition Kinetics ◽  
Thermal Decomposition Kinetics ◽  
Giant Reed ◽  
Cellulosic Fibers ◽  
Kinetics Of

scholarly journals In-Situ High-Energy X-ray Diffraction Study of Austenite Decomposition During Rapid Cooling and Isothermal Holding in Two HSLA Steels

2021 ◽  
Vol 52 (5) ◽  
pp. 1812-1825
Author(s):  
Sen Lin ◽  
Ulrika Borggren ◽  
Andreas Stark ◽  
Annika Borgenstam ◽  
Wangzhong Mu ◽  
...  
Keyword(s):  
Isothermal Holding ◽  
Weight Percent ◽  
High Energy ◽  
Decomposition Kinetics ◽  
Bainitic Transformation ◽  
Austenite Decomposition ◽  
X Ray Diffraction ◽  
Rapid Cooling ◽  
X Ray

AbstractIn-situ high-energy X-ray diffraction experiments with high temporal resolution during rapid cooling (280 °C s−1) and isothermal heat treatments (at 450 °C, 500 °C, and 550 °C for 30 minutes) were performed to study austenite decomposition in two commercial high-strength low-alloy steels. The rapid phase transformations occurring in these types of steels are investigated for the first time in-situ, aiding a detailed analysis of the austenite decomposition kinetics. For the low hardenability steel with main composition Fe-0.08C-1.7Mn-0.403Si-0.303Cr in weight percent, austenite decomposition to polygonal ferrite and bainite occurs already during the initial cooling. However, for the high hardenability steel with main composition Fe-0.08C-1.79Mn-0.182Si-0.757Cr-0.094Mo in weight percent, the austenite decomposition kinetics is retarded, chiefly by the Mo addition, and therefore mainly bainitic transformation occurs during isothermal holding; the bainitic transformation rate at the isothermal holding is clearly enhanced by lowered temperature from 550 °C to 500 °C and 450 °C. During prolonged isothermal holding, carbide formation leads to decreased austenite carbon content and promotes continued bainitic ferrite formation. Moreover, at prolonged isothermal holding at higher temperatures some degenerate pearlite form.

Non-isothermal decomposition kinetics of nano-scale CaCO3 as a function of particle size variation

2021 ◽  
Vol 47 (1) ◽  
pp. 858-864
Author(s):  
Saibal Ray ◽  
Tapas Kumar Bhattacharya ◽  
Vivek Kumar Singh ◽  
Debabrata Deb ◽  
Shounak Ghosh ◽  
...  
Keyword(s):  
Particle Size ◽  
Size Variation ◽  
Decomposition Kinetics ◽  
Isothermal Decomposition ◽  
Nano Scale ◽  
Kinetics Of

scholarly journals The Economics of Arundo donax—A Systematic Literature Review

2019 ◽  
Vol 11 (15) ◽  
pp. 4225 ◽  
Author(s):  
Attila Jámbor ◽  
Áron Török
Keyword(s):  
Literature Review ◽  
Systematic Literature Review ◽  
Contaminated Soils ◽  
Mediterranean Region ◽  
High Energy ◽  
Arundo Donax ◽  
Giant Reed ◽  
High Investment ◽  
The Mediterranean ◽  
High Yields

Arundo donax (giant reed) is an herbaceous, perennial and non-food crop producing dry biomass with relatively high yields in many regions and under different climates. Although there exists a large amount of literature on A. donax, the economic aspects are somehow neglected or are very much limited in most papers. Therefore, the aim of this paper is to analyse the economics of A. donax by applying a systematic literature review of the field. Our sample consists of 68 relevant studies out of the 6009 identified, classified into four groups: Bioenergy, agronomy, invasiveness and phytoremediation. Most papers were focusing on Italy and on the Mediterranean region and were written on the bioenergy aspect. Most studies suggest that A. donax has a relatively high energy balance and yields, high investment but low maintenance costs and high potentials for phytoremediation of contaminated soils. However, a certain section of the literature, mainly based on US experience, shows that giant reed should be produced with care due to its invasiveness hazard. On the whole, A. donax was found to have high economic potentials for biomass production in marginal as well as disadvantageous lands operated by small farmers in the Mediterranean region.

Effect of precompression on isothermal decomposition kinetics of pure and doped potassium bromate

2010 ◽  
Vol 104 (3) ◽  
pp. 991-997 ◽  
Author(s):  
V. M. Abdul Mujeeb ◽  
M. H. Aneesh ◽  
K. Muraleedharan ◽  
T. G. Devi ◽  
M. P. Kannan
Keyword(s):  
Decomposition Kinetics ◽  
Potassium Bromate ◽  
Isothermal Decomposition ◽  
Kinetics Of
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