Co-pyrolysis of petroleum coke and banana leaves biomass: Kinetics, reaction mechanism, and thermodynamic analysis

The mechanism for combustion synthesis (CS) of AlN was investigated in the present paper. A novel quenching technique was developed to retain the high-temperature structure formed in the sample during the combustion process. Based on the microstructural observation of the quenched specimen and thermodynamic analysis, a two-step reaction mechanism for CS AlN, i.e., vaporization of Al and subsequent reaction with N2, is proposed.

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Thermal degradation of mango (Mangifera indica) wood sawdust in a nitrogen environment: characterization, kinetics, reaction mechanism, and thermodynamic analysis

RSC Advances ◽

10.1039/d1ra01467f ◽

2021 ◽

Vol 11 (22) ◽

pp. 13396-13408

Author(s):

Ajay Sharma ◽

Bikash Mohanty

Keyword(s):

Reaction Mechanism ◽

Thermal Degradation ◽

Thermodynamic Analysis ◽

Thermodynamic Data ◽

Mangifera Indica ◽

Wood Sawdust ◽

System P

Kinetic and thermodynamic data were extracted from the pyrolysis of waste MIW sawdust for design and operations of an efficient pyrolysis system.

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Reaction Mechanism of an Al-TiO2 System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.97-101.1624 ◽

2010 ◽

Vol 97-101 ◽

pp. 1624-1627 ◽

Cited By ~ 6

Author(s):

He Guo Zhu ◽

Jing Min ◽

Ying Lu Ai ◽

Qiang Wu

Keyword(s):

Free Energy ◽

Reaction Mechanism ◽

Heating Rate ◽

Gibbs Free Energy ◽

Thermodynamic Analysis ◽

Volume Fraction ◽

Reaction System ◽

Exothermic Peak ◽

Higher Temperature ◽

Α Al2o3

The reaction mechanism of an Al-TiO2 system is discussed. Thermodynamic analysis indicates that the reaction between Al and TiO2 can occur spontaneously due to the negative Gibbs free energy of the Al-TiO2 reaction system. When the reinforcement volume fraction is 30%, there is an endothermic peak and an exothermic peak in the DSC curve. But when the reinforcement volume fraction increases to 100%, there are two independent exothermic peaks and the height of them increases obviously. With increasing the heating rate, the ignite temperature becomes higher and all the peaks move to the higher temperature direction. The reactions between Al and TiO2 consist of two steps: first, Al reacts with TiO2 to form the stable α-Al2O3 particles and the active Ti atoms; second, the active Ti atoms react with Al to form Al3Ti.

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Synthesis of Ti3SiC2 Machinable Ceramics by High-Energy Milling and Hot-Pressing

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.105-106.733 ◽

2010 ◽

Vol 105-106 ◽

pp. 733-735

Author(s):

Bo Bo Liu ◽

Fen Wang ◽

Jian Feng Zhu ◽

Ya Ling Li

Keyword(s):

Reaction Mechanism ◽

Thermodynamic Analysis ◽

Hot Pressing ◽

Early Stage ◽

High Energy ◽

Starting Material ◽

High Energy Milling ◽

Residual Elements ◽

Hot Pressing Sintering

The ternary layered machinable Ti3SiC2 ceramics were synthesized at 1300°C by high-energy milling and hot pressing sintering using Ti,Si and C powder as starting material. The reaction mechanism was examined by XRD, SEM and thermodynamic analysis. The results show that Ti-Si-C powders were transformed to Ti, Si and little TiSi, SiC,Ti5Si3 intermetallics by milled for 18 hours. In this process, the little Ti and C transformed to TiSi phase in early stage, and then the most of residual elements reacted to form SiC and Ti5Si3 intermetallics. Finally, Ti, Si, SiC, Ti5Si3 intermetallics and TiSi reacted to yield Ti3SiC2 by hot pressing sintering. And the sintering temperatures had a significant impact on the yielded content of Ti3SiC2 phase. Besides. The Ti3SiC2 would decompose if the temperature was high enough.

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Study on the Reaction Mechanism of (α-Al2O3+TiB2+TiC)/Al Composites Fabricated by Al-TiO2-B4C System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.150-151.84 ◽

2010 ◽

Vol 150-151 ◽

pp. 84-87

Author(s):

He Guo Zhu ◽

Jin Min ◽

Da Chu ◽

Huan Wang

Keyword(s):

Free Energy ◽

Reaction Mechanism ◽

Gibbs Free Energy ◽

Thermodynamic Analysis ◽

Reaction System ◽

Higher Temperature

The composites (-Al2O3+TiB2+TiC)/Al has been fabricated by using exothermic dispersion synthesis. Thermodynamic analysis indicated that the reaction between the Al and TiO2 can spontaneously occur due to the negative Gibbs free energy of the Al-TiO2 reaction system. With the increase of B4C/TiO2 mole ratios, the exothermic peaks increase move to the higher temperature and the corresponding ignite temperatures also increase. The reaction results indicate that when the B4C/TiO2＝0, the reinforcements are composed of -Al2O3, Al3Ti, with the increase of B4C/TiO2, the amount of Al3Ti decreases and the TiC and TiB2 form simultaneously. When the B4C/TiO2 increases to 1/3, the Al3Ti almost disappear and the reinforcements of the composites are consisted of -Al2O3, TiC and TiB2.

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Insights into kinetics, reaction mechanism, and thermodynamic analysis of pyrolysis of rice straw from rice bowl of India

Bioresource Technology Reports ◽

10.1016/j.biteb.2021.100639 ◽

2021 ◽

Vol 13 ◽

pp. 100639

Author(s):

Rajnish Kumar Singh ◽

Trilok Patil ◽

Ashish Verma ◽

Shyam P. Tekade ◽

Ashish N. Sawarkar

Keyword(s):

Reaction Mechanism ◽

Rice Straw ◽

Thermodynamic Analysis

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Arylation of enelactams using TIPSOTf: reaction scope and mechanistic insight

Organic Chemistry Frontiers ◽

10.1039/d0qo01396j ◽

2021 ◽

Author(s):

Tomasz J. Idzik ◽

Zofia M. Myk ◽

Łukasz Struk ◽

Magdalena Perużyńska ◽

Gabriela Maciejewska ◽

...

Keyword(s):

Reaction Mechanism ◽

Multinuclear Nmr ◽

Mechanistic Insight ◽

Nmr Study ◽

Wide Range

Triisopropylsilyltrifluoromethanesulfonate can be effectively used for the arylation of a wide range of enelactams. The multinuclear NMR study provided deep insights into the reaction mechanism.

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