Catalytic Pyrolysis of Lignocellulosic Biomass: The Influence of the Catalyst Regeneration Sequence on the Composition of Upgraded Pyrolysis Oils over a H-ZSM-5/Al-MCM-41 Catalyst Mixture

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.

Download Full-text

Catalytic Pyrolysis of Soybean Oil in Presence of Al-MCM-41 Type Catalysts

Asian Journal of Chemistry ◽

10.14233/ajchem.2014.15403 ◽

2014 ◽

Vol 26 (2) ◽

pp. 379-382

Author(s):

Longchao Gao ◽

Fengwen Yu ◽

Weijin Wang ◽

Guodong Zhang ◽

Jianbing Ji

Keyword(s):

Soybean Oil ◽

Catalytic Pyrolysis ◽

Mcm 41

Download Full-text

Co-catalytic pyrolysis of biomass and waste triglyceride seed oil in a novel fluidized bed reactor to produce olefins and aromatics integrated with self-heating and catalyst regeneration processes

RSC Advances ◽

10.1039/c3ra40694f ◽

2013 ◽

Vol 3 (17) ◽

pp. 5769 ◽

Cited By ~ 47

Author(s):

Huiyan Zhang ◽

Jian Zheng ◽

Rui Xiao ◽

Dekui Shen ◽

Baosheng Jin ◽

...

Keyword(s):

Fluidized Bed ◽

Catalytic Pyrolysis ◽

Seed Oil ◽

Fluidized Bed Reactor ◽

Catalyst Regeneration ◽

Self Heating ◽

Pyrolysis Of Biomass ◽

Regeneration Processes

Download Full-text

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

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2021.19199 ◽

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.

Download Full-text