Renewable aromatic hydrocarbons from flash catalytic pyrolysis of Monoraphidium sp. lipid extract

2021 ◽  
pp. 100799
Author(s):  
Thalita M. Delmiro ◽  
Guilherme Q. Calixto ◽  
Carolina V. Viegas ◽  
Dulce M.A. Melo ◽  
Graco A.C.M. Viana ◽  
...  
Keyword(s):  
Aromatic Hydrocarbons ◽  
Catalytic Pyrolysis ◽  
Lipid Extract

Catalytic Pyrolysis of Waste Achyranthes Root Over Al-MCM-41

2021 ◽  
Vol 21 (7) ◽  
pp. 4081-4084
Author(s):  
Seul-Bee Lee ◽  
Young-Min Kim ◽  
Ji-Hui Park ◽  
Young-Kwon Park
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Aromatic Hydrocarbons ◽  
Catalytic Pyrolysis ◽  
The Other ◽  
Gas Chromatography Mass Spectrometry ◽  
Acidic Properties ◽  
Achyranthes Root ◽  
Formation Efficiency ◽  
Mcm 41

This study examined the thermal and catalytic pyrolysis of waste Achyranthes Root (AR) using pyrolyzer-gas chromatography/mass spectrometry (Py-GC/MS). The non-catalytic pyrolysis of waste AR produced various kinds of oxygenates, such as acetic acid, hydroxy propanone, furfural, phenol, cresol, guaiacols, syringols, and so on. By applying nanoporous Al-MCM-41 with acidic properties and mesopores to the pyrolysis of waste AR, the levels of furan and aromatic hydrocarbons production increased with a concomitant decrease in the other oxygenates. The formation efficiency of furans was improved further by increasing the amount of Al-MCM-41 applied to the catalytic pyrolysis of waste AR.

Preparation of Aromatic Hydrocarbons from Catalytic Pyrolysis of Microalgae/Palm Kernel Shell Using PKS Biochar-Based Catalysts

2018 ◽  
Vol 33 (1) ◽  
pp. 379-388 ◽  
Author(s):  
Hongchao Wang ◽  
Guozhang Chang ◽  
Pengyu Qi ◽  
Xiao Li ◽  
Qingjie Guo
Keyword(s):  
Aromatic Hydrocarbons ◽  
Catalytic Pyrolysis ◽  
Palm Kernel ◽  
Palm Kernel Shell

Catalytic Pyrolysis of Seawater Aged Polypropylene Over HZSM-5, HY, and Al-MCM-41

2021 ◽  
Vol 21 (7) ◽  
pp. 3971-3974
Author(s):  
Young-Kwon Park ◽  
Muhammad Zain Siddiqui ◽  
Sangjae Jeong ◽  
Eun-Suk Jang ◽  
Young-Min Kim
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Aromatic Hydrocarbons ◽  
Catalytic Pyrolysis ◽  
Decomposition Temperature ◽  
Gas Chromatography Mass Spectrometry ◽  
Catalyst Poisoning ◽  
Pyrolysis Products ◽  
Thermogravimetric Analyzer ◽  
Mcm 41

The effect of seawater aging on the thermal and catalytic pyrolysis of polypropylene (PP) was investigated using a thermogravimetric analyzer and pyrolyzer-gas chromatography/mass spectrometry. Although the surface properties of PP were of the oxidized form by seawater aging, the decomposition temperature and non-catalytic pyrolysis products of PP were relatively unchanged largely due to seawater aging. The catalytic pyrolysis of seawater-aged PP over all the catalysts produced smaller amounts of aromatic hydrocarbons than that of fresh PP due to catalyst poisoning caused by the residual inorganics. Among the catalysts, microporous HZSM-5 (SiO2/Al2O3:23) produced the largest amount of aromatic hydrocarbons followed in order by microporous HY(30) and nanoporous Al-MCM-41(20) from seawater-aged PP due to the high acidity and appropriate pore size for the generation of aromatic hydrocarbons.

Catalytic Pyrolysis of Biomass to Produce Aromatic Hydrocarbons over Calcined Dolomite and ZSM-5

2021 ◽  
Author(s):  
Xu Chen ◽  
Zihao Liu ◽  
Shujuan Li ◽  
Sunwen Xia ◽  
Ning Cai ◽  
...  
Keyword(s):  
Aromatic Hydrocarbons ◽  
Catalytic Pyrolysis ◽  
Pyrolysis Of Biomass

scholarly journals Catalytic Pyrolysis of Polyethylene and Polypropylene over Desilicated Beta and Al-MSU-F

Catalysts ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 501 ◽  
Author(s):  
Hyung Lee ◽  
Young-Kwon Park
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Thermogravimetric Analysis ◽  
Pore Size ◽  
Aromatic Hydrocarbons ◽  
Catalytic Pyrolysis ◽  
Gas Chromatography Mass Spectrometry ◽  
Waste Plastics ◽  
Mesoporous Catalysts ◽  
Branched Hydrocarbons

The catalytic pyrolysis (CP) of different thermoplastics, polyethylene (PE) and polypropylene (PP), over two types of mesoporous catalysts, desilicated Beta (DeBeta) and Al-MSU-F (AMF), was investigated by thermogravimetric analysis (TGA) and pyrolyzer-gas chromatography/mass spectrometry (Py-GC/MS). Catalytic TGA of PE and PP showed lower decomposition temperatures than non-catalytic TGA over both catalysts. Between the two catalysts, DeBeta decreased the decomposition temperatures of waste plastics further, because of its higher acidity and more appropriate pore size than AMF. The catalytic Py-GC/MS results showed that DeBeta produced a larger amount of aromatic hydrocarbons than AMF. In addition, CP over AMF produced a large amount of branched hydrocarbons.

Efficient and selective catalytic pyrolysis of cellulose to monocyclic aromatic hydrocarbons over Zn-containing HZSM-5

Fuel ◽  
2021 ◽  
pp. 122437
Author(s):  
Nai-Yu Yao ◽  
Jing-Pei Cao ◽  
Jing-Ping Zhao ◽  
Zi-Meng He ◽  
Xiao-Bo Feng ◽  
...  
Keyword(s):  
Aromatic Hydrocarbons ◽  
Catalytic Pyrolysis ◽  
Monocyclic Aromatic Hydrocarbons

Procedure for Measuring the Weight Fraction of Products of Catalytic Pyrolysis of Ethylbenzene

2019 ◽  
Vol 19 (3) ◽  
pp. 187-192
Author(s):  
E. Yu. Yakovleva ◽  
Yan Shanshan ◽  
Z. P. Pai
Keyword(s):  
Gas Phase ◽  
Aromatic Hydrocarbons ◽  
Catalytic Pyrolysis ◽  
Capillary Column ◽  
Weight Fraction ◽  
Measurement Range ◽  
Analytical Measurement ◽  
Analytical Error ◽  
Error Margin ◽  
Benzene Toluene

A capillary column with functionalized poly(1-trimethylsilyl-1-propyne) (PTMSP/N2O) was proposed to use for detecting products of catalytic pyrolysis of ethylbenzene. The capillary PTMSP/N2O column separated selectively light C1–C2 (methane, ethane, ethylene, acetylene) and aromatic (benzene, toluene, ethylbenzene, styrene) hydrocarbons. A procedure for gas-phase measuring weight fractions of light C1–C2 and aromatic hydrocarbons was developed. The analytical measurement range was 2.9·10–8 to 1.2·10–1 mg/mL for light C1–C2 components and 3.5·10–11 to 4.0·10–3 mg/mL for liquid components. The analytical error margin at repetition ranged from 1.9 % to 4.7 %.

scholarly journals Catalytic Pyrolysis of Tetra Pak over Acidic Catalysts

Catalysts ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 602 ◽  
Author(s):  
Muhammad Zain Siddiqui ◽  
Tae Uk Han ◽  
Young-Kwon Park ◽  
Young-Min Kim ◽  
Seungdo Kim
Keyword(s):  
Aromatic Hydrocarbons ◽  
Catalytic Pyrolysis ◽  
Aluminum Foil ◽  
Gas Chromatography Mass Spectrometry ◽  
Kraft Paper ◽  
Acidic Catalysts ◽  
Effective Role ◽  
Tetra Pak ◽  
Mcm 41

The thermal and catalytic pyrolysis of two kinds of Tetra Pak waste (TP-1 and TP-2) over three different acidic catalysts—HZSM-5(SiO2/Al2O3, 30), HBeta (38), and Al-MCM-41(20)—were investigated in this study. Tetra Pak (TP) wastes consist of composite material comprising kraft paper, polyethylene (PE) film, and aluminum foil. Thermal decomposition behaviors during the pyrolysis of TPs were monitored using a thermogravimetric (TG) analyzer and tandem micro reactor-gas chromatography/mass spectrometry (TMR-GC/MS). Neither the interaction between the non-catalytic pyrolysis intermediates of kraft paper and PE, nor the effect of aluminum foil have been monitored during the non-catalytic TG analysis of TPs. The maximum decomposition temperatures of PE in TP-1 shifted from 465 °C to 432 °C by HBeta(38), 439 °C by HZSM-5(30), and 449 °C by Al-MCM-41(20), respectively. The results of the TMR-GC/MS analysis indicate that the non-catalytic pyrolysis of TPs results in the formation of large amounts of furans and heavy hydrocarbons and they are converted efficiently to aromatic hydrocarbons over the acidic catalysts. Among the three catalysts, HZSM-5(30) produced the largest amount of aromatic hydrocarbons, followed by HBeta(38) and Al-MCM-41(20) owing to their different acidity and pore size. Compared to TP-1, TP-2 produced a larger amount of aromatic hydrocarbons via catalytic pyrolysis because of its relatively larger PE content. The synergistic formation of aromatic hydrocarbons was also enhanced during the catalytic pyrolysis of TPs due to the effective role of PE as hydrogen donor to kraft paper. In terms of their catalytic effectiveness, HZSM-5(30) had a longer lifetime than HBeta(38).

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