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1. Influence of heating conditions and initial thickness on the effectiveness of thin intumescent coatings

Author:
Lucherini, Andrea; Hidalgo, Juan P.; Torero, Jose L.; Maluk, Cristian
Source:
Fire safety journal 2021 v.120 pp. 103078
ISSN:
0379-7112
Subject:
thermogravimetry,   etc   ; coatings; heat; prediction; steel; temperature;     Show all 6 Subjects
Abstract:
... The study presented herein shows an experimental methodology aimed at analysing the effectiveness of intumescent coatings through detailed characterisation of their thermo-physical response for a range of heating conditions and applied initial dry film thickness (DFT). Steel plates coated with a commercial solvent-based thin intumescent coating were exposed to well-defined and highly-repeatable he ...
DOI:
10.1016/j.firesaf.2020.103078

2. Kinetics and thermodynamics of microalgae residue oxidative pyrolysis based on double distributed activation energy model with simulated annealing method

Author:
Guo, Xiaojuan; Cai, Junmeng; Yu, Xi
Source:
Journal of analytical and applied pyrolysis 2021 v.154 pp. 104997
ISSN:
0165-2370
Subject:
thermogravimetry,   etc   ; activation energy; microalgae; models; pyrolysis;     Show all 5 Subjects
Abstract:
... Non-isothermal thermogravimetric analysis (TGA) at four heating rates of 10, 20, 30 and 40 K min⁻¹ under oxidative atmosphere was employed to investigate the characteristics of microalgae residue oxidative pyrolysis. The double distributed activation energy model (DAEM) was used to analyze the oxidative pyrolysis kinetics of microalgae residue and the simulated annealing method was employed for th ...
DOI:
10.1016/j.jaap.2020.104997

3. Optimized microwave-assisted functionalization and quantification of superficial amino groups on porous silicon nanostructured microparticles

Author:
Cisneros-Covarrubias, Cándida Anahy; Palestino, Gabriela; Gómez-Durán, César F. A.; Rosales-Mendoza, Sergio; Betancourt-Mendiola, María de Lourdes
Source:
Analytical methods 2021 v.13 no.4 pp. 516-525
ISSN:
1759-9679
Subject:
thermogravimetry,   etc   ; irradiation; microwave treatment; silicon; temperature;     Show all 5 Subjects
Abstract:
... This work presents an optimized microwave (MW)-assisted method for the chemical functionalization of porous silicon particles (PSip). 3-(Aminopropyl)triethoxysilane (APTES) was grafted on previously stabilized PSip. The functionalization efficiency was studied and optimized in terms of reaction time (Rt) and reaction temperature (RT) using a central composite design (CCD). The effect of MW irradia ...
DOI:
10.1039/d0ay02083d

4. Application of Percolation Theory in Thermokinetics

Author:
Dhaundiyal, Alok; Singh, Suraj Bhan
Source:
Acta technologica agriculturae 2020 v.23 no.2 pp. 73-80
ISSN:
1338-5267
Subject:
thermogravimetry,   etc   ; kinetics; mathematical theory;     Show all 3 Subjects
Abstract:
... The present paper focuses on the infiltration of random fluid particles through a porous wall. The thermogravimetric curve is assumed to be a non-eroded interface so that the random fluid particle can pass through the discrete boundary of it. The node on the thermogravimetric plane is denoted by the three-dimensional lattice, which has unit thickness. The Lattice Boltzmann method is implemented to ...
DOI:
10.2478/ata-2020-0012

5. High Proton Conductivity in Ba₅Er₂Al₂ZrO₁₃, a Hexagonal Perovskite-Related Oxide with Intrinsically Oxygen-Deficient Layers

Author:
Murakami, Taito; Hester, James R.; Yashima, Masatomo
Source:
Journal of the American Chemical Society 2020 v.142 no.27 pp. 11653-11657
ISSN:
1520-5126
Subject:
thermogravimetry,   etc   ; energy; neutron diffraction;     Show all 3 Subjects
Abstract:
... For the development of proton-based electrolytes, high proton conductivity at intermediate temperatures (300–600 °C) is crucial, but the available materials have been confined to a limited number of the structure families, such as cubic perovskites. Herein, we report Ba₅Er₂Al₂ZrO₁₃, a hexagonal perovskite-related oxide, as a new class of proton conductors exhibiting higher conductivities than 10–³ ...
DOI:
10.1021/jacs.0c02403

6. Affixing poly(methyl methacrylate-co-acrylic acid) nanospheres with trimethoxyvinylsilane on silicon solar module to enhance its power conversion efficiency

Author:
Lee, Martin Jian-Hrong; Chee, Swee-Yong; Tay, Bing-Yuan; Lee, Chee-Leong; Lim, Fook-Chin; Sepeai, Suhaila
Source:
Journal of materials science 2021 v.56 no.21 pp. 12364-12382
ISSN:
0022-2461
Subject:
thermogravimetry,   etc   ; adhesion; composite polymers; cost effectiveness; glass; lighting; nanospheres; silicon;     Show all 8 Subjects
Abstract:
... Poly(methyl methacrylate-co-acrylic acid) [P(MMA-co-AA)] incorporated with 0–9 wt% of trimethoxyvinylsilane (TMVS) has been studied to investigate the effect of TMVS on the adhesion properties of P(MMA-co-AA) nanospheres coated on silicon substrate as well as on the power conversion efficiency (PCE) of silicon solar module coated with the polymer nanospheres. The incorporation of 7 and 9 wt% of TM ...
DOI:
10.1007/s10853-021-06119-2

7. Biofuel characteristic of waste clay oil pyrolysis

Author:
Yuan, Chuan; Liu, Qian; Li, Peijun; Barati, Bahram; Viswanathan, Karthickeyan; Zhao, Shuang; Wang, Shuang; Cao, Bin; Hu, Yamin
Source:
Journal of analytical and applied pyrolysis 2021 v.156 pp. 105117
ISSN:
0165-2370
Subject:
thermogravimetry,   etc   ; biofuels; clay; cyclization reactions; decarboxylation; kinetics; oils; pyrolysis; temperature;     Show all 9 Subjects
Abstract:
... In this work, the pyrolysis characteristics of waste clay oil were studied using thermogravimetric and reaction kinetic analysis. Additionally, the two temperature stages in the pyrolysis process of waste clay oil were analyzed. Furthermore, Py-GC-MS was used to analyze the main products of cracked volatiles at different pyrolysis temperatures, it showed that the higher pyrolysis temperature was b ...
DOI:
10.1016/j.jaap.2021.105117

8. Comprehensive kinetic study of Imperata Cylindrica pyrolysis via Asym2sig deconvolution and combined kinetics

Author:
Hidayat, Syarif; Bakar, Muhammad S. Abu; Ahmed, Ashfaq; Iryani, Dewi Agustina; Hussain, Murid; Jamil, Farrukh; Park, Young-Kwon
Source:
Journal of analytical and applied pyrolysis 2021 v.156 pp. 105133
ISSN:
0165-2370
Subject:
thermogravimetry,   etc   ; Imperata cylindrica; biomass; cellulose; hemicellulose; lignin; models; pyrolysis; temperature;     Show all 9 Subjects
Abstract:
... This study examined the non-isothermal kinetics of the slow pyrolysis of Imperata Cylindrica (IC). Pyrolysis conditions were developed under the pure N₂ flow and non-isothermal conditions at the heating rates of 2.5, 5, 10, and 17.5 K/min and over the temperature range of 303–1173 K. The IC pyrolysis profiles could be identified into three parallel reactions, each of which corresponded to pseudo-h ...
DOI:
10.1016/j.jaap.2021.105133

9. Method to assess biomass in scrap tires: Spanish cement sector as a case study

Author:
Mora, Pedro; Alarcón, Arturo; Tercero, Sandra; Llamas, Bernardo
Source:
Environment, development and sustainability 2021 v.23 no.6 pp. 8524-8541
ISSN:
1387-585X
Subject:
thermogravimetry,   etc   ; alternative fuels; biomass; case studies; cement; environment; rubber; stakeholders;     Show all 8 Subjects
Abstract:
... The objective of the study is to develop a methodology to assess natural rubber content in scrap tires. Sampling and statistical methodology have been implemented in order to define an undifferentiated tire which is independent of brand tires or light or heavy tires. Sampling preparation, thermogravimetry analysis and statistical methodology have been implemented, and the method was validated usin ...
DOI:
10.1007/s10668-020-00980-y

10. Enhanced Coke Gasification Activity of the Mn₁.₅Cr₁.₅O₄ Spinel Catalyst during Coking in Ethylene–Steam Mixtures

Author:
Bukhovko, Maxim P.; Yang, Lu; Nezam, Iman; Li, Liwei; Malek, Andrzej; Davis, Robert J.; Agrawal, Pradeep K.; Jones, Christopher W.
Source:
Energy & fuels 2021 v.35 no.6 pp. 5271-5280
ISSN:
1520-5029
Subject:
thermogravimetry,   etc   ; carbon; catalysts; crackers; energy; ethylene; gasification; steam;     Show all 8 Subjects
Abstract:
... Mn–Cr–O spinel catalysts (MnCr₂O₄ and Mn₁.₅Cr₁.₅O₄) and single oxides of Mn and Cr are coked under ethylene and ethylene–steam mixtures to simulate reaction conditions occurring in steam cracker furnaces. The coking rates are measured using thermogravimetric analysis, and the Mn₁.₅Cr₁.₅O₄ catalyst displayed considerably less coke deposition (an order of magnitude) under ethylene–steam flow. Analys ...
DOI:
10.1021/acs.energyfuels.1c00036

11. Thermal Terahertz Analysis for the Detection of Trace Organic Matter

Author:
Qin, Fankai; Chen, Ru; Li, Yicen; Meng, Zhaohui; Chen, Sitong; Zhao, Kun; Miao, Xinyang; Xiang, Wenfeng; Yue, Wenzheng; Zhan, Honglei
Source:
Energy & fuels 2021 v.35 no.5 pp. 4075-4080
ISSN:
1520-5029
Subject:
thermogravimetry,   etc   ; energy; oil fields; organic matter; pyrolysis; sand; spectroscopy; temperature;     Show all 8 Subjects
Abstract:
... The technology of trace organic matter (OM) detection offers researchers numerous intriguing possibilities, ranging from fundamental science to applications in many fields. This study proposes a thermal terahertz (THz) analysis (TTA) method that is suitable for detecting trace OM in the field of oil–gas resource and can analyze the differences in the content and type of trace OM. In this research, ...
DOI:
10.1021/acs.energyfuels.0c04354

12. Form-stable phase change composites based on nanofibrillated cellulose/polydopamine hybrid aerogels with extremely high energy storage density and improved photothermal conversion efficiency

Author:
Tan, Yunlong; Du, Xiaosheng; Du, Zongliang; Wang, Haibo; Cheng, Xu
Source:
RSC advances 2021 v.11 no.10 pp. 5712-5721
ISSN:
2046-2069
Subject:
thermogravimetry,   etc   ; cellulose; energy; enthalpy; gelation; photons; solar energy; thermal stability;     Show all 8 Subjects
Abstract:
... The development of form-stable phase change materials (PCMs) with superior photothermal conversion efficiency and high phase change enthalpy is critical for the utilization of solar energy. In this work, nanofibrillated cellulose (NFC)/polydopamine (PDA) hybrid aerogels (NPAs) were synthesized by cation-induced gelation of NFC/PDA suspension. Then, novel form-stable PCMs with superior energy stora ...
DOI:
10.1039/d0ra10485j

13. Optical characterizations of PMMA/metal oxide nanoparticles thin films: bandgap engineering using a novel derived model

Author:
Al-Bataineh, Qais M.; Ahmad, Ahmad.A.; Alsaad, A.M.; Telfah, Ahmad D.
Source:
Heliyon 2021 v.7 no.1 pp. e05952
ISSN:
2405-8440
Subject:
thermogravimetry,   etc   ; energy; mathematical models; nanocomposites; photons; reflectance; thermal stability; transmittance;     Show all 8 Subjects
Abstract:
... We synthesize and optically characterize pure PMMA and PMMA incorporated with metal oxides nanoparticles (MO NPs) such as ZnO, CuO, TiO₂ and SiO₂ NPs nanocomposite thin films with weight concentration of 10% using dip-coating technique. SEM images of MO NPs show that all NPs have nearly an average size of around 50 nm. The optical parameters such as, optical parameters (n and k), optoelectronics p ...
DOI:
10.1016/j.heliyon.2021.e05952

14. Heteroleptic manganese compounds as potential precursors for manganese based thin films and nanomaterials

Author:
Lee, Sunju; Lee, Ga Yeon; Kim, Chang Gyoun; Chung, Taek-Mo; Park, Bo Keun
Source:
RSC advances 2020 v.10 no.50 pp. 29659-29667
ISSN:
2046-2069
Subject:
thermogravimetry,   etc   ; liquids; manganese; manganese monoxide;     Show all 4 Subjects
Abstract:
... Heteroleptic manganese compounds, [Mn(tmhd)(TMEDA)Cl]₂ (1), [Mn(tmhd)(dmamp)]₂ (2), Mn₂(tmhd)₂(edpa)₂(μ-THF) (3), [Mn(dmampea)(NEt₂)]₂ (4), and Mn(dmampea)(ⁱPr-MeAMD) (5), were synthesized and characterized. Compound 5 was a volatile liquid. Structural analysis revealed that 1–4 were dimers. Compounds 1 and 3, 2, and 4 had distorted octahedral, distorted trigonal-bipyramidal, and distorted tetrahe ...
DOI:
10.1039/d0ra05225f

15. Effect of chain length on the structure and physicochemical properties of active compound/linear dextrin composites

Author:
Zhan, Wei; Yuan, Chao; Cui, Bo; Yu, Bin; Liu, Pengfei; Wu, Zhengzong; Zhao, Haibo
Source:
Carbohydrate polymers 2021 v.269 pp. 118304
ISSN:
0144-8617
Subject:
thermogravimetry,   etc   ; active ingredients; alcohols; antioxidants; arachidonic acid; crystal structure; dextrins; encapsulation; microstructure; photochemistry; spectroscopy;     Show all 11 Subjects
Abstract:
... Three linear dextrins (LDs) with different chain length were obtained through fractionating short-chain LD by gradient precipitation with 65%, 70% and 75% alcohol, signed as 65LD, 70LD, and 75LD, respectively. The LDs were employed to encapsulate arachidonic acid (ARA) and geranic acid (GA). Fourier infrared spectrometry, differential scanning calorimetry and thermogravimetric analysis confirmed t ...
DOI:
10.1016/j.carbpol.2021.118304

16. Synthesis of membrane-type graphene oxide immobilized manganese dioxide adsorbent and its adsorption behavior for lithium ion

Author:
Cheng, Mengmeng; Yao, Chenxue; Su, Yan; Liu, Jinglei; Xu, Lijian; Hou, Shifeng
Source:
Chemosphere 2021 v.279 pp. 130487
ISSN:
0045-6535
Subject:
thermogravimetry,   etc   ; adjuvants; adsorbents; adsorption; filtration; graphene oxide; lithium; manganese dioxide; permeability; seawater;     Show all 10 Subjects
Abstract:
... Recently, there has been an urgent need to develop new materials and technologies for extracting lithium ions. Herein, the membrane-type adsorbent of manganese dioxide (MnO₂) is prepared by a vacuum filtration method using graphene oxide (GO) as a binder and amino-β-cyclodextrin (amino-β-CD) as an adjuvant. The results of thermogravimetric analysis show that MnO₂ is successfully immobilized on GO ...
DOI:
10.1016/j.chemosphere.2021.130487

17. Enhancement of aromatics production from catalytic co-pyrolysis of walnut shell and LDPE via a two-step approach

Author:
Yu, Dongxue; Hui, Helong; Ding, Guangchao; Dong, Ning; Li, Songgeng
Source:
Journal of analytical and applied pyrolysis 2021 v.157 pp. 105216
ISSN:
0165-2370
Subject:
thermogravimetry,   etc   ; Raman spectroscopy; aromatic compounds; catalysts; cellulose; hemicellulose; lignin; oils; polyethylene; pyrolysis; walnut hulls;     Show all 11 Subjects
Abstract:
... A two-step catalytic co-pyrolysis (TSCCP) of walnut shell (WNS) and low-density polyethylene (LDPE) was innovatively studied at a lab-scale fixed-bed reactor using HZSM-5 as a catalyst. Various characterization techniques such as FTIR, Raman spectroscopy, SEM, thermal gravimetric analysis (TGA) and Van Krevelen diagram were applied to explore structure evolutions of the derived chars aiming at rev ...
DOI:
10.1016/j.jaap.2021.105216

18. Preparation and characterization of guar gum based polyurethanes

Author:
Anjum, Anbreen; Zuber, Mohammad; Zia, Khalid Mahmood; Anjum, Muhammad Naveed; Aftab, Waseem
Source:
International journal of biological macromolecules 2021 v.183 pp. 2174-2183
ISSN:
0141-8130
Subject:
thermogravimetry,   etc   ; X-ray diffraction; butanes; crystal structure; emulsifiers; guar gum; polyurethanes; stabilizers; thermal properties; thickeners;     Show all 10 Subjects
Abstract:
... Guar gum (plant-based polysaccharide) is a promising candidate with immense potential. It is used as emulsifier, thickener, stabilizer, and as binding agent in many industries. In the present project, it was planned to synthesize guar gum based polyurethanes by varying the amount of guar gum. Guar gum (GG) was used along with hydroxyl-terminated polybutadiene (HTPB) as soft segment, which was then ...
DOI:
10.1016/j.ijbiomac.2021.06.025

19. Waste rubber ash modified by silane coupling agent as reinforced filler in acrylonitrile butadiene rubber cured by ionising radiation

Author:
El-Nemr, Khaled F.; Hassan, Medhat M.; Hamdy, Eman M.
Source:
International journal of environmental analytical chemistry 2021 v.101 no.9 pp. 1240-1257
ISSN:
1029-0397
Subject:
thermogravimetry,   etc   ; X-ray diffraction; analytical chemistry; gamma radiation; irradiation; rubber; silane; thermal stability;     Show all 8 Subjects
Abstract:
... Composites of acrylonitrile butadiene rubber loaded by different concentration (0–40 parts by weight per hundred parts of rubber (phr)) of waste rubber ash (WRA) that treated by Vinyltriethoxysilane (VTES) have been prepared, and then the composites subjected to gamma radiation at different doses ranged (0 up to 150 kGy) to desire curing. The WRA powder that treated by VTES silane (WRA-Sn) was cha ...
DOI:
10.1080/03067319.2019.1679801

20. Efficient utilization of coal slime using anaerobic fermentation technology

Author:
Guo, Hongyu; Zhao, Shufeng; Xia, Daping; Wang, Lei; Lv, Jinghui; Yu, Hongfei; Jiao, Xiaojian
Source:
Bioresource technology 2021 v.332 pp. 125072
ISSN:
0960-8524
Subject:
thermogravimetry,   etc   ; ash content; biodegradation; biogas; carbon dioxide; coal; combustion; fermentation; gas production (biological); methanogens; organic matter;     Show all 11 Subjects
Abstract:
... In order to increase the utilization of coal slime, realize efficient utilization of resources and protect the environment, the feasibility of anaerobic fermentation technology employing coal slime was explored. The biodegradation of coal slimes and its influence on the utilization characteristics were analyzed using biogas production simulations, drying dehydration and thermogravimetric (TG) anal ...
DOI:
10.1016/j.biortech.2021.125072