Record Details

Production of valuable chemicals via multiphase catalytic pyrolysis of hazardous waste expanded polystyrene using low cost CaCO3 solid base catalyst

NOPR - NISCAIR Online Periodicals Repository

View Archive Info
 
 
Field Value
 
Title Production of valuable chemicals via multiphase catalytic pyrolysis of hazardous waste expanded polystyrene using low cost CaCO3 solid base catalyst
 
Creator Verma, Anjali
Pramanik, Hiralal
 
Subject Catalyst
CaCO3
Multiphase
Pyrolysis
Styrene
WEPS
 
Description 143-151
In the present research work, multiphase catalytic pyrolysis (in-situ catalytic cracking) of waste expanded polystyrene
(WEPS) has been carried out using calcium carbonate (CaCO3) as a solid base catalyst. The multiphase catalytic pyrolysis of
WEPS has been conducted at different temperatures ranging from 400oC to 700oC at a heating rate of 15 oC/min and feed to
catalyst ratio of 20:1. The thermal pyrolysis of WEPS has produced a maximum liquid yield of 94.37 wt.% at a reaction
temperature of 650oC and heating rate of 15 oC/min. Whereas, the maximum liquid yield of 85.99 wt.% is obtained at a
reaction temperature of 550oC and heating rate of 15 oC/min for the multiphase catalytic pyrolysis. The GC-FID analysis
confirm that the thermal pyrolysis oil is mainly composed of benzene (0.62 wt.%), toluene (10.21 wt.%), ethylbenzene (0.55
wt.%) and styrene (84.74 wt.%). Whereas, the pyrolysis oil obtained from multiphase catalytic pyrolysis using CaCO3
catalyst contains very high styrene content of 93.24 wt.% along with a very low amount of fuel range hydrocarbons benzene
(0.25 wt.%), toluene (2.09 wt.%) and ethyl benzene (0.52 wt.%). Thus, the present study clearly indicates that the basic
catalyst CaCO3 shows the high selectivity towards the styrene monomer.
 
Date 2024-01-12T12:06:38Z
2024-01-12T12:06:38Z
2024-01
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscpr.res.in/handle/123456789/63197
https://doi.org/10.56042/ijct.v31i1.7610
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJCT Vol.31(1) [January 2024]