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You searched for: Journal name Journal of analytical and applied pyrolysis Remove constraint Journal name: Journal of analytical and applied pyrolysis Publication year rev 7982-2018 Remove constraint Publication year rev: 7982-2018 Source 2018 v.136 Remove constraint Source: 2018 v.136
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1. A study of thermal decomposition of bromoethane

Author:
Nicolas Vin; Frédérique Battin-Leclerc; Olivier Herbinet
Source:
Journal of analytical and applied pyrolysis 2018 v.136 pp. 199-207
ISSN:
0165-2370
Subject:
aluminum oxide; ethane; ethylene; hydrobromic acid; kinetics; methane; organobromine compounds; prediction; pyrolysis; silica; temperature
Abstract:
... The pyrolysis of bromoethane under dilute atmosphere and quasi-atmospheric pressure was studied at temperatures from 600 to 975 K using a fused silica jet stirred reactor (JSR) and an alumina tubular reactor (TR). In the JSR, a complete conversion was observed at a residence time of 2 s, a temperature of 975 K and an inlet mole fraction of bromoethane of 0.01. In the TR, the full conversion was ob ...
DOI:
10.1016/j.jaap.2018.10.005

2. Catalytic pyrolysis of lignin with red mud derived hierarchical porous catalyst for alkyl-phenols and hydrocarbons production

Author:
Shaoqing Wang; Zhihe Li; Xueyuan Bai; Weiming Yi; Peng Fu
Source:
Journal of analytical and applied pyrolysis 2018 v.136 pp. 8-17
ISSN:
0165-2370
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray fluorescence spectroscopy; absorption; acidity; agricultural wastes; alkylation; alkylphenols; aluminum oxide; biofuels; catalysts; demethylation; energy-dispersive X-ray analysis; ferric oxide; hydrocarbons; lignin; porosity; pyrolysis; scanning electron microscopy; surface area; temperature; texture; titanium dioxide; transmission electron microscopy; vapors
Abstract:
... Red mud (RM) was activated by a feasible digestion-precipitation method followed by calcination at 600 °C (denoted as ACRM), which was used as a novel catalyst during the thermal degradation of the lignin. The prepared catalyst was then applied to the lignin derived from agricultural waste using a vertical fixed-bed microreactor between 350–650 °C. The texture characteristics of the activated RM w ...
DOI:
10.1016/j.jaap.2018.10.024

3. Fast pyrolysis of tannins from pine bark as a renewable source of catechols

Author:
Oscar Pinto; Romina Romero; Marion Carrier; Jörn Appelt; Cristina Segura
Source:
Journal of analytical and applied pyrolysis 2018 v.136 pp. 69-76
ISSN:
0165-2370
Subject:
Pinus radiata; bark; catechin; catechol; fluidized beds; furnaces; gas chromatography-mass spectrometry; lignin; polycyclic aromatic hydrocarbons; proanthocyanidins; pyrolysis; tannins; triterpenoids
Abstract:
... Fast pyrolysis of water-insoluble (W-I) tannins—mainly composed of condensed tannins—obtained from Pinus radiata bark methanol-water extraction was carried out in pursuit of a renewable source of high-value chemicals, in particular catechols. Micropyrolysis in an isothermal furnace unit (Py-GC–MS/FID) was performed between 450–600 °C. Catechin and W-I tannins were compared to establish thermal deg ...
DOI:
10.1016/j.jaap.2018.10.022

4. Identifying the structures retained when transforming wood into biocarbon

Author:
Johnathon N. Caguiat; Daniel S. Yanchus; Randeep S. Gabhi; Donald W. Kirk; Charles Q. Jia
Source:
Journal of analytical and applied pyrolysis 2018 v.136 pp. 77-86
ISSN:
0165-2370
Subject:
Populus; Robinia pseudoacacia; X-ray diffraction; batteries; biomass; capacitance; cell walls; electrodes; electrolytes; energy; energy density; graphene; heat; porous media; pyrolysis; scanning electron microscopes; tracheids; wood
Abstract:
... Biocarbon is a carbon-rich, porous material derived from biomass, and a promising electrode material for supercapacitors. Supercapacitors are fast-charging, long-lasting energy storage devices that have high power density and low energy density, relative to batteries. Many of the most recent efforts to raise the energy density of supercapacitors focus on increasing the gravimetric capacitance (F/g ...
DOI:
10.1016/j.jaap.2018.10.020

5. K2CO3-promoted methane pyrolysis on nickel/coal-char hybrids

Author:
Jianbo Zhang; Xing Li; Wenting Xie; Qingqing Hao; Huiyong Chen; Xiaoxun Ma
Source:
Journal of analytical and applied pyrolysis 2018 v.136 pp. 53-61
ISSN:
0165-2370
Subject:
carbon; catalysts; catalytic activity; heat treatment; hydrogen production; methane; mixing; potassium carbonate; pyrolysis
Abstract:
... Catalytic methane pyrolysis (CMP) is an environmentally benign and promising strategy for hydrogen production. However, one of the important challenges is to creatively design and prepare catalysts with high and stable catalytic activity. To integrate both advantages of traditional metal and carbon catalysts, four effective strategies were proposed to study K2CO3-promoted CMP on nickel/coal-char h ...
DOI:
10.1016/j.jaap.2018.11.001

6. Novel instrumentation for tracking molecular products in fast pyrolysis of carbohydrates with sub-second temporal resolution

Author:
Carolyn P. Hutchinson; D. Paul Cole; Erica A. Dalluge; Evan A. Larson; Young Jin Lee
Source:
Journal of analytical and applied pyrolysis 2018 v.136 pp. 107-114
ISSN:
0165-2370
Subject:
aerosols; alpha-cyclodextrin; biomass; cellulose; gas chromatography-mass spectrometry; glucose; instrumentation; ionization; monitoring; pyrolysis; spectrometers
Abstract:
... Despite recent advances, little has been experimentally established regarding the detailed chemical processes that occur during biomass pyrolysis reactions. We developed a new technique that allows for the monitoring of each molecular product from fast pyrolysis with ∼0.2 s temporal resolution. This was achieved by directly coupling a micropyrolyzer with a time-of-flight mass spectrometer via a so ...
DOI:
10.1016/j.jaap.2018.10.017

7. Production of aromatic hydrocarbons by catalytic co-pyrolysis of microalgae and polypropylene using HZSM-5

Author:
Pengyu Qi; Guozhang Chang; Hongchao Wang; Xiuli Zhang; Qingjie Guo
Source:
Journal of analytical and applied pyrolysis 2018 v.136 pp. 178-185
ISSN:
0165-2370
Subject:
Nannochloropsis; aromatic hydrocarbons; catalysts; chemical composition; feedstocks; microalgae; oils; polypropylenes; pyrolysis; synergism; temperature; thermogravimetry; zeolites
Abstract:
... In the current study, the thermogravimetric behavior of Nannochloropsis sp. (NS), polypropylene (PP) and mixed samples (NS: PP = 1:1) with and without catalyst were investigated by TGA analysis. To promote the efficient production of aromatic hydrocarbons, co-pyrolysis of NS and PP over the HZSM-5 zeolite catalyst were carried out in a bench-scaled fixed bed reactor. The effects of the reaction te ...
DOI:
10.1016/j.jaap.2018.10.007

8. Production of aromatic hydrocarbons by hydro-liquefaction of high-density polyethylene (HDPE) over Ni/HZSM-5

Author:
Zeyou Pan; Xiangfei Xue; Changsen Zhang; Dengtai Wang; Yunyun Xie; Ruiqin Zhang
Source:
Journal of analytical and applied pyrolysis 2018 v.136 pp. 208-214
ISSN:
0165-2370
Subject:
benzene; catalysts; cracking; gas chromatography-mass spectrometry; liquids; nickel; polyethylene; pyrolysis; temperature; xylene
Abstract:
... HDPE hydro-liquefaction to produce aromatics was studied by optimizing reaction parameters. Ni loading (0–20 wt%), reaction temperature (360–420 °C), catalyst to reactant ratio (0.02-0.08) and reaction time (0–4 h) were investigated using Ni/HZSM-5 catalyst. The maximum aromatic yield (28.9%) was obtained over 15 wt% Ni/HZSM-5 at 400 ℃ for 1 h and using catalyst to reactant ratio of 0.06. GC–MS an ...
DOI:
10.1016/j.jaap.2018.10.004

9. Pyrolysis mechanism of β-O-4 type lignin model polymers with different oxygen functional groups on Cα

Author:
Li Yin; Erwei Leng; Xun Gong; Yang Zhang; Xiaomin Li
Source:
Journal of analytical and applied pyrolysis 2018 v.136 pp. 169-177
ISSN:
0165-2370
Subject:
Fourier transform infrared spectroscopy; ambient temperature; benzene; carbon dioxide; dealkylation; gas chromatography-mass spectrometry; greenhouse gas emissions; lignin; methane; models; moieties; oxygen; pyrolysis; pyrolysis gas chromatography; spectrometers; thermogravimetry
Abstract:
... Two kinds of linear lignin model polymers composed of only β-O-4 linkages with the Cα connected with a carbonyl group and a hydroxyl group, respectively, were synthesized to investigate the mechanism of lignin pyrolysis and the effects of different oxygen functional groups on Cα during lignin pyrolysis. A thermogravimetric analyzer coupled with a flourier transform infrared spectrometer (TG-FTIR) ...
DOI:
10.1016/j.jaap.2018.10.008

10. Pyrolysis of tobacco wastes for bio-oil with aroma compounds

Author:
Bochao Yan; Suping Zhang; Wenbing Chen; Qinjie Cai
Source:
Journal of analytical and applied pyrolysis 2018 v.136 pp. 248-254
ISSN:
0165-2370
Subject:
acids; biofuels; flavor; fluidized beds; gas chromatography-mass spectrometry; heterocyclic compounds; leaves; liquids; odor compounds; odors; oils; pyrolysis; stems; taste; temperature; tobacco; wastes
Abstract:
... The pyrolysis of tobacco waste, including tobacco leaf (TL) and tobacco stems (TS), using a fluid bed reactor was investigated for the preparation of bio-oil containing aroma compounds or for use as a liquid fuel. The maximum bio-oil yield from TS was 67.47%, and was higher than that from TL. The bio-oil compositions were analyzed by gas chromatography–mass spectrometry (GC–MS) and can be classifi ...
DOI:
10.1016/j.jaap.2018.09.016

11. Study on two-step pyrolysis of walnut shell coupled with acid washing pretreatment

Author:
Liqiang Zhang; Lingrui Huang; Shanshan Li; Xifeng Zhu
Source:
Journal of analytical and applied pyrolysis 2018 v.136 pp. 1-7
ISSN:
0165-2370
Subject:
Fourier transform infrared spectroscopy; acids; biochar; biofuels; furfural; gas chromatography-mass spectrometry; hydrocarbons; ketones; phenols; pyrolysis; pyrolysis gas chromatography; spectrophotometers; sugars; temperature; thermogravimetry; value added; walnut hulls; washing
Abstract:
... Two-step pyrolysis(TSP) of walnut shell(WS) coupled with acid washing pretreatment was carried out to investigate the coupling effects on improving the quality of bio-oil and selectivities of value-added chemicals by Pyrolysis-gas chromatography/mass spectrometry(Py-GC/MS). The first step temperature(T1) was set from 350 °C to 550 °C, and the second step temperature was set as 650 °C. Thermogravim ...
DOI:
10.1016/j.jaap.2018.11.008

12. The interaction between the char solid heat carrier and the volatiles during low-rank coal pyrolysis

Author:
Xiao-hong Li; Bao-fu Li; Da-qing Fu; Jie Feng; Wen-ying Li
Source:
Journal of analytical and applied pyrolysis 2018 v.136 pp. 160-168
ISSN:
0165-2370
Subject:
catalytic cracking; coal; gasification; heat; minerals; physicochemical properties; pyrolysis; temperature
Abstract:
... Compared with traditional coal pyrolysis technology, low-rank coal pyrolysis with char as the solid heat carrier can achieve higher tar yield and lighter tar components. The hot char provides heat for coal pyrolysis process and has a thermal catalytic effect on the reactions of released volatiles. Simultaneously, the physicochemical properties and reactivity of the hot char have changed. The effec ...
DOI:
10.1016/j.jaap.2018.10.009

13. Thermal degradation of medical plastic waste by in-situ FTIR, TG-MS and TG-GC/MS coupled analyses

Author:
Linbo Qin; Jun Han; Bo Zhao; Yu Wang; Wangsheng Chen; Futang Xing
Source:
Journal of analytical and applied pyrolysis 2018 v.136 pp. 132-145
ISSN:
0165-2370
Subject:
Fourier transform infrared spectroscopy; acetic acid; alkanes; alkenes; benzene; benzoic acid; bottles; gas chromatography-mass spectrometry; phenol; plastics; polypropylenes; polystyrenes; pyrolysis; styrene; temperature; thermogravimetry; toluene; wastes
Abstract:
... In this paper, thermal degradation of medical plastic waste (the blends of medicinal plastic bottles and plastic infusion bag) that mainly composed of polystyrene (PS) and polypropylene (PP) is studied under both inert and oxidative atmospheres using in-situ FTIR, TG-MS and TG-GC/MS coupled analyses. Meanwhile, the gas evolution profiles as well as the function groups of the decomposition residues ...
DOI:
10.1016/j.jaap.2018.10.012

14. Catalytic fast pyrolysis of sugarcane bagasse using activated carbon catalyst in a hydrogen atmosphere to selectively produce 4-ethyl phenol

Author:
Qiang Lu; Xiao-ning Ye; Zhen-xi Zhang; Ze-xiang Wang; Min-shu Cui; Yong-ping Yang
Source:
Journal of analytical and applied pyrolysis 2018 v.136 pp. 125-131
ISSN:
0165-2370
Subject:
activated carbon; catalysts; hydrogen; phenol; pyrolysis; quantitative analysis; steam; sugarcane bagasse; temperature; yields
Abstract:
... Activated carbon (AC) prepared by physical activation with steam (named as AC-H2O) was employed for catalytic fast pyrolysis of bagasse in a hydrogen atmosphere to selectively produce 4-ethyl phenol (4-EP), a valuable phenolic compound. Lab-scale fast pyrolysis experiments were conducted to quantitatively determine the pyrolytic products and investigate several factors on the 4-EP production, incl ...
DOI:
10.1016/j.jaap.2018.10.014

15. Electrical properties modulation in spray pyrolysed Cu2SnS3 thin films through variation of copper precursor concentration for photovoltaic application

Author:
Biren Patel; Ranjan K. Pati; Indrajit Mukhopadhyay; Abhijit Ray
Source:
Journal of analytical and applied pyrolysis 2018 v.136 pp. 35-43
ISSN:
0165-2370
Subject:
Raman spectroscopy; X-ray diffraction; absorbance; copper; electrical properties; glass; pyrolysis
Abstract:
... Thin film of Cu2SnS3 (CTS), a truly inexpensive photovoltaic absorber is deposited by low cost and non-vacuum spray pyrolysis technique on glass substrates. As deposited CTS films are of p-type in nature, however they are characterised with undesirably high free carrier concentration which leads to a large amount of recombination. Such a high carrier concentration is successfully reduced from 1020 ...
DOI:
10.1016/j.jaap.2018.11.003

16. Evaluation of process parameters on high-density polyethylene hydro-liquefaction products

Author:
Zeyou Pan; Xiangfei Xue; Changsen Zhang; Dengtai Wang; Yunyun Xie; Ruiqin Zhang
Source:
Journal of analytical and applied pyrolysis 2018 v.136 pp. 146-152
ISSN:
0165-2370
Subject:
acidity; alkanes; aluminum oxide; aromatic compounds; catalysts; cracking; energy recovery; hydrogen; hydrogenation; liquids; oils; polyethylene; pyrolysis; solvents; temperature; waste utilization; wastes
Abstract:
... The hydro-liquefaction of high-density polyethylene (HDPE) was studied in the absence of a solvent. The influence of reaction temperature (400–440 °C), initial H2 pressure (1–4 MPa), and reaction time (2–6 h) on the product was investigated using Ni/Al2O3 as a catalyst. Results showed that increased reaction temperature and time promoted hydrocarbon cracking, thereby favoring the enhancement of C7 ...
DOI:
10.1016/j.jaap.2018.10.011

17. Highly efficient conversion of camphor tree sawdust into bio-oil and biochar products by liquefaction in ethanol-water cosolvent

Author:
Zi-qian Pan; Hua-jun Huang; Chun-fei Zhou; Xiao-feng Xiao; Xiao-wu He; Fa-ying Lai; Jiang-bo Xiong
Source:
Journal of analytical and applied pyrolysis 2018 v.136 pp. 186-198
ISSN:
0165-2370
Subject:
Cinnamomum camphora; biochar; biofuels; energy recovery; esters; ethanol; ketones; liquefaction; nitrogen compounds; nutrients; pyrolysis; sawdust; surface area; thermal stability; water treatment
Abstract:
... The liquefaction of camphor tree sawdust (CTS) in ethanol-water cosolvent is preliminarily explored in this study. Remarkably, efficient conversion of CTS is achieved as a result of the synergetic effects between ethanol and water during liquefaction process. The liquefaction of CTS in isometric ethanol-water cosolvent at 280 ℃ for 30 min results in higher conversion rate (98.4 wt.%), bio-oil yiel ...
DOI:
10.1016/j.jaap.2018.10.006

18. Investigation on composition and structure of asphaltenes during low-temperature coal tar hydrotreatment under various reaction pressures

Author:
Ruitian Shao; Ziwei Shen; Dong Li; Zhihui Sun; Liangjun Pei; Xu Liu; Wenhong Li; Yong Dan
Source:
Journal of analytical and applied pyrolysis 2018 v.136 pp. 44-52
ISSN:
0165-2370
Subject:
asphaltenes; coal tar; condensation reactions; equipment; free radicals; gel chromatography; heterocyclic compounds; hydrogenation; nitrides; nitrogen; nuclear magnetic resonance spectroscopy; pyrolysis; sulfides; sulfur; toluene
Abstract:
... Hydrotreatment (HDT) of low-temperature coal tar (LCT) were carried out in a fixed-bed hydrogenation equipment under various reaction pressures. Asphaltenes were characterized by elemental analysis (EA), gel permeation chromatography (GPC), and proton nuclear magnetic resonance (1H-NMR). As the reaction pressure increased from 6 to 12 MPa, the content of toluene insoluble compounds and asphaltenes ...
DOI:
10.1016/j.jaap.2018.11.002

19. Structure characterization and pyrolysis behavior of organosolv lignin isolated from corncob residue

Author:
Xiaoyan Lv; Qiuxing Li; Zhicheng Jiang; Yue Wang; JinDong Li; Changwei Hu
Source:
Journal of analytical and applied pyrolysis 2018 v.136 pp. 115-124
ISSN:
0165-2370
Subject:
biofuels; corn cobs; differential thermal analysis; lignin; molecular weight; phenols; pyrolysis; solvents; temperature; thermogravimetry; weight loss
Abstract:
... Structural features and pyrolysis behavior of organosolv lignin isolated from corncob residue by THF-H2O solvent were studied. The average molecular weight (Mw) of the organosolv lignin, mainly constituted of p-hydroxyphenyl (H), guaiacyl (G), syringyl (S) and various substructures with β-O-4, β-β bonds, was mainly distributed between 10,000 and 600 g/mol, occupying about 81%. TG/DTG curves of the ...
DOI:
10.1016/j.jaap.2018.10.016

20. The effect of uronic acid moieties on xylan pyrolysis

Author:
Jiawei Wang; Mohd Asmadi; Haruo Kawamoto
Source:
Journal of analytical and applied pyrolysis 2018 v.136 pp. 215-221
ISSN:
0165-2370
Subject:
alkaline earth metals; catalysts; gas chromatography-mass spectrometry; metal ions; moieties; pyrolysis; salts; sodium; temperature; thermogravimetry; uronic acids; wood; xylan; xylose
Abstract:
... The 4-O-methyl-D-glucuronic acid groups attached to xylose chains in wood xylan can form uronate salts with alkali and alkaline earth metal cations. These uronic acid and metal uronate moieties may act as acid and base catalysts, respectively, during xylan pyrolysis. In this study, commercial beechwood xylan (in which most uronic acids were present as sodium salts) and a demineralized version of t ...
DOI:
10.1016/j.jaap.2018.10.002